feat(authentication): file password algorithms (#3848)

This adds significant enhancements to the file auth provider including multiple additional algorithms.

cmd/authelia-scripts/cmd/gen.go

@@ -7,5 +7,5 @@
 package cmd
 
 const (
-	versionSwaggerUI = "4.14.2"
+	versionSwaggerUI = "4.14.3"
 )

config.template.yml

@@ -393,12 +393,32 @@ authentication_backend:
   # file:
   #   path: /config/users_database.yml
   #   password:
-  #     algorithm: argon2id
-  #     iterations: 1
-  #     key_length: 32
-  #     salt_length: 16
-  #     memory: 1024
-  #     parallelism: 8
+  #     algorithm: argon2
+  #     argon2:
+  #       variant: argon2id
+  #       iterations: 3
+  #       memory: 65536
+  #       parallelism: 4
+  #       key_length: 32
+  #       salt_length: 16
+  #     scrypt:
+  #       iterations: 16
+  #       block_size: 8
+  #       parallelism: 1
+  #       key_length: 32
+  #       salt_length: 16
+  #     pbkdf2:
+  #       variant: sha512
+  #       iterations: 310000
+  #       salt_length: 16
+  #     sha2crypt:
+  #       variant: sha512
+  #       iterations: 50000
+  #       salt_length: 16
+  #     bcrypt:
+  #       variant: standard
+  #       cost: 12
+
 
 ##
 ## Password Policy Configuration.

docs/content/en/configuration/first-factor/file.md

@@ -21,12 +21,31 @@ authentication_backend:
   file:
     path: /config/users.yml
     password:
-      algorithm: argon2id
-      iterations: 3
-      key_length: 32
-      salt_length: 16
-      parallelism: 4
-      memory: 64
+      algorithm: argon2
+      argon2:
+        variant: argon2id
+        iterations: 3
+        memory: 65536
+        parallelism: 4
+        key_length: 32
+        salt_length: 16
+      scrypt:
+        iterations: 16
+        block_size: 8
+        parallelism: 1
+        key_length: 32
+        salt_length: 16
+      pbkdf2:
+        variant: sha512
+        iterations: 310000
+        salt_length: 16
+      sha2crypt:
+        variant: sha512
+        iterations: 50000
+        salt_length: 16
+      bcrypt:
+        variant: standard
+        cost: 12
 ```
 
 ## Options
@@ -39,70 +58,7 @@ The path to the file with the user details list. Supported file types are:
 
 * [YAML File](../../reference/guides/passwords.md#yaml-format)
 
-### password
-
-#### algorithm
-
-{{< confkey type="string" default="argon2id" required="no" >}}
-
-Controls the hashing algorithm used for hashing new passwords. Value must be one of:
-
-* `argon2id` for the [Argon2] `id` variant
-* `sha512` for the [SHA Crypt] `SHA512` variant
-
-#### iterations
-
-{{< confkey type="integer" required="no" >}}
-
-Controls the number of hashing iterations done by the other hashing settings ([Argon2] parameter `t`, [SHA Crypt]
-parameter `rounds`). This affects the effective cost of hashing.
-
-| Algorithm | Minimum | Default |                                        Recommended                                         |
-|:---------:|:-------:|:-------:|:------------------------------------------------------------------------------------------:|
-| argon2id  |    1    |    3    | [See Recommendations](../../reference/guides/passwords.md#recommended-parameters-argon2id) |
-|  sha512   |  1000   |  50000  |  [See Recommendations](../../reference/guides/passwords.md#recommended-parameters-sha512)  |
-
-#### key_length
-
-{{< confkey type="integer" default="32" required="no" >}}
-
-*__Important:__ This setting is specific to the `argon2id` algorithm and unused with the `sha512` algorithm.*
-
-Sets the key length of the [Argon2] hash output. The minimum value is `16` with the recommended value of `32` being set
-as the default.
-
-#### salt_length
-
-{{< confkey type="integer" default="16" required="no" >}}
-
-Controls the length of the random salt added to each password before hashing. There is not a compelling reason to have
-this set to anything other than `16`, however the minimum is `8` with the recommended value of `16` being set as the
-default.
-
-#### parallelism
-
-{{< confkey type="integer" default="4" required="no" >}}
-
-*__Important:__ This setting is specific to the `argon2id` algorithm and unused with the `sha512` algorithm.*
-
-Sets the number of threads used by [Argon2] when hashing passwords ([Argon2] parameter `p`). The minimum value is `1`
-with the recommended value of `4` being set as the default. This affects the effective cost of hashing.
-
-#### memory
-
-{{< confkey type="integer" default="64" required="no" >}}
-
-*__Important:__ This setting is specific to the `argon2id` algorithm and unused with the `sha512` algorithm.*
-
-Sets the amount of memory in megabytes allocated to a single password hashing calculation ([Argon2] parameter `m`). This
-affects the effective cost of hashing.
-
-This memory is released by go after the hashing process completes, however the operating system may not reclaim the
-memory until a later time such as when the system is experiencing memory pressure which may cause the appearance of more
-memory being in use than Authelia is actually actively using. Authelia will typically reuse this memory if it has not be
-reclaimed as long as another hashing calculation is not still utilizing it.
-
-## Reference
+## Password Options
 
 A [reference guide](../../reference/guides/passwords.md) exists specifically for choosing password hashing values. This
 section contains far more information than is practical to include in this configuration document. See the
@@ -110,5 +66,164 @@ section contains far more information than is practical to include in this confi
 
 This guide contains examples such as the [User / Password File](../../reference/guides/passwords.md#user--password-file).
 
+### algorithm
+
+{{< confkey type="string" default="argon2" required="no" >}}
+
+Controls the hashing algorithm used for hashing new passwords. Value must be one of:
+
+* `argon2` for the [Argon2](#argon2) algorithm
+* `scrypt` for the [Scrypt](#scrypt) algorithm
+* `pbkdf2` for the [PBKDF2](#pbkdf2) algorithm
+* `sha2crypt` for the [SHA2Crypt](#sha2crypt) algorithm
+* `bcrypt` for the [Bcrypt](#bcrypt) algorithm
+
+### argon2
+
+The [Argon2] algorithm implementation. This is one of the only algorithms that was designed purely with password hashing
+in mind and is subsequently one of the best algorithms to date for security.
+
+#### variant
+
+{{< confkey type="string" default="argon2id" required="no" >}}
+
+Controls the variant when hashing passwords using [Argon2]. Recommended `argon2id`.
+Permitted values `argon2id`, `argon2i`, `argon2d`.
+
+#### iterations
+
+{{< confkey type="integer" default="3" required="no" >}}
+
+Controls the number of iterations when hashing passwords using [Argon2].
+
+#### memory
+
+{{< confkey type="integer" default="65536" required="no" >}}
+
+Controls the amount of memory in kibibytes when hashing passwords using [Argon2].
+
+#### parallelism
+
+{{< confkey type="integer" default="4" required="no" >}}
+
+Controls the parallelism factor when hashing passwords using [Argon2].
+
+#### key_length
+
+{{< confkey type="integer" default="32" required="no" >}}
+
+Controls the output key length when hashing passwords using [Argon2].
+
+#### salt_length
+
+{{< confkey type="integer" default="16" required="no" >}}
+
+Controls the output salt length when hashing passwords using [Argon2].
+
+### scrypt
+
+The [Scrypt] algorithm implementation.
+
+#### iterations
+
+{{< confkey type="integer" default="16" required="no" >}}
+
+Controls the number of iterations when hashing passwords using [Scrypt].
+
+#### block_size
+
+{{< confkey type="integer" default="8" required="no" >}}
+
+Controls the block size when hashing passwords using [Scrypt].
+
+#### parallelism
+
+{{< confkey type="integer" default="1" required="no" >}}
+
+Controls the parallelism factor when hashing passwords using [Scrypt].
+
+#### key_length
+
+{{< confkey type="integer" default="32" required="no" >}}
+
+Controls the output key length when hashing passwords using [Scrypt].
+
+#### salt_length
+
+{{< confkey type="integer" default="16" required="no" >}}
+
+Controls the output salt length when hashing passwords using [Scrypt].
+
+### pbkdf2
+
+The [PBKDF2] algorithm implementation.
+
+#### variant
+
+{{< confkey type="string" default="sha512" required="no" >}}
+
+Controls the variant when hashing passwords using [PBKDF2]. Recommended `sha512`.
+Permitted values `sha1`, `sha224`, `sha256`, `sha384`, `sha512`.
+
+#### iterations
+
+{{< confkey type="integer" default="310000" required="no" >}}
+
+Controls the number of iterations when hashing passwords using [PBKDF2].
+
+#### salt_length
+
+{{< confkey type="integer" default="16" required="no" >}}
+
+Controls the output salt length when hashing passwords using [PBKDF2].
+
+### sha2crypt
+
+The [SHA2 Crypt] algorithm implementation.
+
+#### variant
+
+{{< confkey type="string" default="sha512" required="no" >}}
+
+Controls the variant when hashing passwords using [SHA2 Crypt]. Recommended `sha512`.
+Permitted values `sha256`, `sha512`.
+
+#### iterations
+
+{{< confkey type="integer" default="50000" required="no" >}}
+
+Controls the number of iterations when hashing passwords using [SHA2 Crypt].
+
+#### salt_length
+
+{{< confkey type="integer" default="16" required="no" >}}
+
+Controls the output salt length when hashing passwords using [SHA2 Crypt].
+
+### bcrypt
+
+The [Bcrypt] algorithm implementation.
+
+#### variant
+
+{{< confkey type="string" default="standard" required="no" >}}
+
+Controls the variant when hashing passwords using [Bcrypt]. Recommended `standard`.
+Permitted values `standard`, `sha256`.
+
+*__Important Note:__ The `sha256` variant is a special variant designed by
+[Passlib](https://passlib.readthedocs.io/en/stable/lib/passlib.hash.bcrypt_sha256.html). This variant passes the
+password through a SHA256 HMAC before passing it to the [Bcrypt] algorithm, effectively bypassing the 72 byte password
+truncation that [Bcrypt] does. It is not supported by many other systems.*
+
+#### cost
+
+{{< confkey type="integer" default="12" required="no" >}}
+
+Controls the hashing cost when hashing passwords using [Bcrypt].
+
 [Argon2]: https://www.rfc-editor.org/rfc/rfc9106.html
-[SHA Crypt]: https://www.akkadia.org/drepper/SHA-crypt.txt
+[Scrypt]: https://en.wikipedia.org/wiki/Scrypt
+[PBKDF2]: https://www.ietf.org/rfc/rfc2898.html
+[SHA2 Crypt]: https://www.akkadia.org/drepper/SHA-crypt.txt
+[Bcrypt]: https://en.wikipedia.org/wiki/Bcrypt

docs/content/en/integration/proxies/nginx-proxy-manager/index.md

@@ -2,7 +2,7 @@
 title: "NGINX Proxy Manager"
 description: "An integration guide for Authelia and the NGINX Proxy Manager reverse proxy"
 lead: "A guide on integrating Authelia with NGINX Proxy Manager."
-date: 2022-06-15T17:51:47+10:00
+date: 2022-10-08T12:43:26+11:00
 draft: false
 images: []
 menu:

docs/content/en/reference/cli/authelia/authelia_crypto.md

@@ -38,5 +38,7 @@ authelia crypto --help
 
 * [authelia](authelia.md)	 - authelia untagged-unknown-dirty (master, unknown)
 * [authelia crypto certificate](authelia_crypto_certificate.md)	 - Perform certificate cryptographic operations
+* [authelia crypto hash](authelia_crypto_hash.md)	 - Perform cryptographic hash operations
 * [authelia crypto pair](authelia_crypto_pair.md)	 - Perform key pair cryptographic operations
+* [authelia crypto rand](authelia_crypto_rand.md)	 - Generate a cryptographically secure random string
 

docs/content/en/reference/cli/authelia/authelia_crypto_hash.md

@@ -0,0 +1,42 @@
+---
+title: "authelia crypto hash"
+description: "Reference for the authelia crypto hash command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash
+
+Perform cryptographic hash operations
+
+### Synopsis
+
+Perform cryptographic hash operations.
+
+This subcommand allows preforming hashing cryptographic tasks.
+
+### Examples
+
+```
+authelia crypto hash --help
+```
+
+### Options
+
+```
+  -h, --help   help for hash
+```
+
+### SEE ALSO
+
+* [authelia crypto](authelia_crypto.md)	 - Perform cryptographic operations
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+* [authelia crypto hash validate](authelia_crypto_hash_validate.md)	 - Perform cryptographic hash validations
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate.md

@@ -0,0 +1,54 @@
+---
+title: "authelia crypto hash generate"
+description: "Reference for the authelia crypto hash generate command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate
+
+Generate cryptographic hash digests
+
+### Synopsis
+
+Generate cryptographic hash digests.
+
+This subcommand allows generating cryptographic hash digests.
+
+See the help for the subcommands if you want to override the configuration or defaults.
+
+```
+authelia crypto hash generate [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate --help
+```
+
+### Options
+
+```
+  -c, --config strings    configuration files to load (default [configuration.yml])
+  -h, --help              help for generate
+      --no-confirm        skip the password confirmation prompt
+      --password string   manually supply the password rather than using the terminal prompt
+```
+
+### SEE ALSO
+
+* [authelia crypto hash](authelia_crypto_hash.md)	 - Perform cryptographic hash operations
+* [authelia crypto hash generate argon2](authelia_crypto_hash_generate_argon2.md)	 - Generate cryptographic Argon2 hash digests
+* [authelia crypto hash generate bcrypt](authelia_crypto_hash_generate_bcrypt.md)	 - Generate cryptographic bcrypt hash digests
+* [authelia crypto hash generate pbkdf2](authelia_crypto_hash_generate_pbkdf2.md)	 - Generate cryptographic PBKDF2 hash digests
+* [authelia crypto hash generate scrypt](authelia_crypto_hash_generate_scrypt.md)	 - Generate cryptographic scrypt hash digests
+* [authelia crypto hash generate sha2crypt](authelia_crypto_hash_generate_sha2crypt.md)	 - Generate cryptographic SHA2 Crypt hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate_argon2.md

@@ -0,0 +1,56 @@
+---
+title: "authelia crypto hash generate argon2"
+description: "Reference for the authelia crypto hash generate argon2 command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate argon2
+
+Generate cryptographic Argon2 hash digests
+
+### Synopsis
+
+Generate cryptographic Argon2 hash digests.
+
+This subcommand allows generating cryptographic Argon2 hash digests.
+
+```
+authelia crypto hash generate argon2 [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate argon2 --help
+```
+
+### Options
+
+```
+  -c, --config strings      configuration files to load (default [configuration.yml])
+  -h, --help                help for argon2
+  -i, --iterations int      number of iterations (default 3)
+  -k, --key-size int        key size in bytes (default 32)
+  -m, --memory int          memory in kibibytes (default 65536)
+      --no-confirm          skip the password confirmation prompt
+  -p, --parallelism int     parallelism or threads (default 4)
+      --password string     manually supply the password rather than using the terminal prompt
+      --profile string      profile to use, options are low-memory and recommended
+      --random              uses a randomly generated password
+      --random.length int   when using a randomly generated password it configures the length (default 72)
+  -s, --salt-size int       salt size in bytes (default 16)
+  -v, --variant string      variant, options are 'argon2id', 'argon2i', and 'argon2d' (default "argon2id")
+```
+
+### SEE ALSO
+
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate_bcrypt.md

@@ -0,0 +1,51 @@
+---
+title: "authelia crypto hash generate bcrypt"
+description: "Reference for the authelia crypto hash generate bcrypt command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate bcrypt
+
+Generate cryptographic bcrypt hash digests
+
+### Synopsis
+
+Generate cryptographic bcrypt hash digests.
+
+This subcommand allows generating cryptographic bcrypt hash digests.
+
+```
+authelia crypto hash generate bcrypt [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate bcrypt --help
+```
+
+### Options
+
+```
+  -c, --config strings      configuration files to load (default [configuration.yml])
+  -i, --cost int            hashing cost (default 12)
+  -h, --help                help for bcrypt
+      --no-confirm          skip the password confirmation prompt
+      --password string     manually supply the password rather than using the terminal prompt
+      --random              uses a randomly generated password
+      --random.length int   when using a randomly generated password it configures the length (default 72)
+  -v, --variant string      variant, options are 'standard' and 'sha256' (default "standard")
+```
+
+### SEE ALSO
+
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate_pbkdf2.md

@@ -0,0 +1,52 @@
+---
+title: "authelia crypto hash generate pbkdf2"
+description: "Reference for the authelia crypto hash generate pbkdf2 command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate pbkdf2
+
+Generate cryptographic PBKDF2 hash digests
+
+### Synopsis
+
+Generate cryptographic PBKDF2 hash digests.
+
+This subcommand allows generating cryptographic PBKDF2 hash digests.
+
+```
+authelia crypto hash generate pbkdf2 [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate pbkdf2 --help
+```
+
+### Options
+
+```
+  -c, --config strings      configuration files to load (default [configuration.yml])
+  -h, --help                help for pbkdf2
+  -i, --iterations int      number of iterations (default 310000)
+      --no-confirm          skip the password confirmation prompt
+      --password string     manually supply the password rather than using the terminal prompt
+      --random              uses a randomly generated password
+      --random.length int   when using a randomly generated password it configures the length (default 72)
+  -s, --salt-size int       salt size in bytes (default 16)
+  -v, --variant string      variant, options are 'sha1', 'sha224', 'sha256', 'sha384', and 'sha512' (default "sha512")
+```
+
+### SEE ALSO
+
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate_scrypt.md

@@ -0,0 +1,54 @@
+---
+title: "authelia crypto hash generate scrypt"
+description: "Reference for the authelia crypto hash generate scrypt command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate scrypt
+
+Generate cryptographic scrypt hash digests
+
+### Synopsis
+
+Generate cryptographic scrypt hash digests.
+
+This subcommand allows generating cryptographic scrypt hash digests.
+
+```
+authelia crypto hash generate scrypt [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate scrypt --help
+```
+
+### Options
+
+```
+  -r, --block-size int      block size (default 8)
+  -c, --config strings      configuration files to load (default [configuration.yml])
+  -h, --help                help for scrypt
+  -i, --iterations int      number of iterations (default 16)
+  -k, --key-size int        key size in bytes (default 32)
+      --no-confirm          skip the password confirmation prompt
+  -p, --parallelism int     parallelism or threads (default 1)
+      --password string     manually supply the password rather than using the terminal prompt
+      --random              uses a randomly generated password
+      --random.length int   when using a randomly generated password it configures the length (default 72)
+  -s, --salt-size int       salt size in bytes (default 16)
+```
+
+### SEE ALSO
+
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_generate_sha2crypt.md

@@ -0,0 +1,52 @@
+---
+title: "authelia crypto hash generate sha2crypt"
+description: "Reference for the authelia crypto hash generate sha2crypt command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash generate sha2crypt
+
+Generate cryptographic SHA2 Crypt hash digests
+
+### Synopsis
+
+Generate cryptographic SHA2 Crypt hash digests.
+
+This subcommand allows generating cryptographic SHA2 Crypt hash digests.
+
+```
+authelia crypto hash generate sha2crypt [flags]
+```
+
+### Examples
+
+```
+authelia crypto hash generate sha2crypt --help
+```
+
+### Options
+
+```
+  -c, --config strings      configuration files to load (default [configuration.yml])
+  -h, --help                help for sha2crypt
+  -i, --iterations int      number of iterations (default 50000)
+      --no-confirm          skip the password confirmation prompt
+      --password string     manually supply the password rather than using the terminal prompt
+      --random              uses a randomly generated password
+      --random.length int   when using a randomly generated password it configures the length (default 72)
+  -s, --salt-size int       salt size in bytes (default 16)
+  -v, --variant string      variant, options are sha256 and sha512 (default "sha512")
+```
+
+### SEE ALSO
+
+* [authelia crypto hash generate](authelia_crypto_hash_generate.md)	 - Generate cryptographic hash digests
+

docs/content/en/reference/cli/authelia/authelia_crypto_hash_validate.md

@@ -0,0 +1,46 @@
+---
+title: "authelia crypto hash validate"
+description: "Reference for the authelia crypto hash validate command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto hash validate
+
+Perform cryptographic hash validations
+
+### Synopsis
+
+Perform cryptographic hash validations.
+
+This subcommand allows preforming cryptographic hash validations. i.e. checking hash digests against a password.
+
+```
+authelia crypto hash validate [flags] -- <digest>
+```
+
+### Examples
+
+```
+authelia crypto hash validate --help
+authelia crypto hash validate '$5$rounds=500000$WFjMpdCQxIkbNl0k$M0qZaZoK8Gwdh8Cw5diHgGfe5pE0iJvxcVG3.CVnQe.' -- 'p@ssw0rd'
+```
+
+### Options
+
+```
+  -h, --help              help for validate
+      --password string   manually supply the password rather than using the terminal prompt
+```
+
+### SEE ALSO
+
+* [authelia crypto hash](authelia_crypto_hash.md)	 - Perform cryptographic hash operations
+

docs/content/en/reference/cli/authelia/authelia_crypto_rand.md

@@ -0,0 +1,55 @@
+---
+title: "authelia crypto rand"
+description: "Reference for the authelia crypto rand command."
+lead: ""
+date: 2022-08-27T10:46:58+10:00
+draft: false
+images: []
+menu:
+  reference:
+    parent: "cli-authelia"
+weight: 330
+toc: true
+---
+
+## authelia crypto rand
+
+Generate a cryptographically secure random string
+
+### Synopsis
+
+Generate a cryptographically secure random string.
+
+This subcommand allows generating cryptographically secure random strings for use for encryption keys, HMAC keys, etc.
+
+```
+authelia crypto rand [flags]
+```
+
+### Examples
+
+```
+authelia crypto rand --help
+authelia crypto rand --length 80
+authelia crypto rand -n 80
+authelia crypto rand --charset alphanumeric
+authelia crypto rand --charset alphabetic
+authelia crypto rand --charset ascii
+authelia crypto rand --charset numeric
+authelia crypto rand --charset numeric-hex
+authelia crypto rand --characters 0123456789ABCDEF
+```
+
+### Options
+
+```
+      --characters string   Sets the explicit characters for the random output
+  -c, --charset string      Sets the charset for the output, options are 'ascii', 'alphanumeric', 'alphabetic', 'numeric', and 'numeric-hex' (default "alphanumeric")
+  -h, --help                help for rand
+  -n, --length int          Sets the length of the random output (default 80)
+```
+
+### SEE ALSO
+
+* [authelia crypto](authelia_crypto.md)	 - Perform cryptographic operations
+

docs/content/en/reference/cli/authelia/authelia_hash-password.md

@@ -21,7 +21,7 @@ Hash a password to be used in file-based users database
 Hash a password to be used in file-based users database.
 
 ```
-authelia hash-password [flags] -- <password>
+authelia hash-password [flags] -- [password]
 ```
 
 ### Examples
@@ -38,13 +38,13 @@ authelia hash-password --key-length=64 -- 'mypass'
 ### Options
 
 ```
-  -c, --config strings    Configuration files
+  -c, --config strings    configuration files to load (default [configuration.yml])
   -h, --help              help for hash-password
   -i, --iterations int    set the number of hashing iterations (default 3)
   -k, --key-length int    [argon2id] set the key length param (default 32)
-  -m, --memory int        [argon2id] set the amount of memory param (in MB) (default 64)
+  -m, --memory int        [argon2id] set the amount of memory param (in MB) (default 65536)
+      --no-confirm        skip the password confirmation prompt
   -p, --parallelism int   [argon2id] set the parallelism param (default 4)
-  -s, --salt string       set the salt string
   -l, --salt-length int   set the auto-generated salt length (default 16)
   -z, --sha512            use sha512 as the algorithm (changes iterations to 50000, change with -i)
 ```

docs/content/en/reference/guides/passwords.md

@@ -52,25 +52,33 @@ users:
 
 The file contains hashed passwords instead of plain text passwords for security reasons.
 
-You can use Authelia binary or docker image to generate the hash of any password. The [hash-password] command has many
-tunable options, you can view them with the `authelia hash-password --help` command. For example if you wanted to
-improve the entropy you could generate a 16 byte salt and provide it with the `--salt` flag.
+You can use Authelia binary or docker image to generate the hash of any password. The [crypt hash generate] command has
+many supported algorithms. To view them run the `authelia crypto hash generate --help` command. To see the tunable
+options for an algorithm subcommand include that command before `--help`. For example for the [Argon2] algorithm use the
+`authelia crypto hash generate argon2 --help` command to see the available options.
 
-Example: `authelia hash-password --salt abcdefghijklhijl -- 'password'`.
-
-Passwords passed to [hash-password] should be single quoted if using special characters to prevent parameter
-substitution. In addition the password should be the last parameter, and should be after a `--`. For instance to
-generate a hash with the docker image just run:
+Passwords passed to [crypt hash generate] should be single quoted if using the `--password` parameter instead of the
+console prompt, especially if it has  special characters to prevent parameter substitution. For instance to generate an
+[Argon2] hash with the docker image just run:
 
 ```bash
-$ docker run authelia/authelia:latest authelia hash-password -- 'password'
-Password hash: $argon2id$v=19$m=65536$3oc26byQuSkQqksq$zM1QiTvVPrMfV6BVLs2t4gM+af5IN7euO0VB6+Q8ZFs
+$ docker run authelia/authelia:latest authelia crypto hash generate argon2 --password 'password'
+Digest: $argon2id$v=19$m=65536,t=3,p=4$Hjc8e7WYcBFcJmEDUOsS9A$ozM7RyZR1EyDR8cuyVpDDfmLrGPGFgo5E2NNqRumui4
 ```
 
 You may also use the `--config` flag to point to your existing configuration. When used, the values defined in the
-config will be used instead.
+config will be used instead. For example to generate the password with a configuration file named `configuration.yml`
+in the current directory:
 
-See the [full CLI reference documentation](../cli/authelia/authelia_hash-password.md).
+```bash
+$ docker run -v ./configuration.yml:/configuration.yml -it authelia/authelia:latest authelia crypto hash generate --config /configuration.yml
+Enter Password:
+Confirm Password:
+
+Digest: $argon2id$v=19$m=65536,t=3,p=4$Hjc8e7WYcBFcJmEDUOsS9A$ozM7RyZR1EyDR8cuyVpDDfmLrGPGFgo5E2NNqRumui4
+```
+
+See the [full CLI reference documentation](../cli/authelia/authelia_crypto_hash_generate.md).
 
 ### Cost
 
@@ -88,11 +96,11 @@ all algorithms. The main cost type measurements are:
 * CPU
 * Memory
 
-*__Important Note:__ When using algorithms that use a memory cost like [Argon2] it should be noted that this memory is
-released by Go after the hashing process completes, however the operating system may not reclaim the memory until a
-later time such as when the system is experiencing memory pressure which may cause the appearance of more memory being
-in use than Authelia is actually actively using. Authelia will typically reuse this memory if it has not be reclaimed as
-long as another hashing calculation is not still utilizing it.*
+*__Important Note:__ When using algorithms that use a memory cost like [Argon2] and [Scrypt] it should be noted that
+this memory is released by Go after the hashing process completes, however the operating system may not reclaim the
+memory until a later time such as when the system is experiencing memory pressure which may cause the appearance of more
+memory being in use than Authelia is actually actively using. Authelia will typically reuse this memory if it has not be
+reclaimed as long as another hashing calculation is not still utilizing it.*
 
 To get a rough estimate of how much memory should be utilized with these algorithms you can utilize the following
 command:
@@ -114,7 +122,7 @@ widely considered to be the best hashing algorithm, and in 2015 won the [Passwor
 customizable parameters including a memory parameter allowing the [cost](#cost) of computing a hash to scale into the
 future with better hardware which makes it harder to brute-force.
 
-For backwards compatibility and user choice support for the [SHA Crypt] algorithm (`SHA512` variant) is still available.
+For backwards compatibility and user choice support for the [SHA2 Crypt] algorithm (`SHA512` variant) is still available.
 While it's a reasonable hashing function given high enough iterations, as hardware improves it has a higher chance of
 being brute-forced since it only allows scaling the CPU [cost](#cost) whereas [Argon2] allows scaling both for CPU and
 Memory [cost](#cost).
@@ -123,10 +131,21 @@ Memory [cost](#cost).
 
 The algorithm that a hash is utilizing is identifiable by its prefix:
 
-|  Algorithm  | Variant  |    Prefix    |
-|:-----------:|:--------:|:------------:|
-|  [Argon2]   |   `id`   | `$argon2id$` |
-| [SHA Crypt] | `SHA512` |    `$6$`     |
+|  Algorithm   |  Variant   |      Prefix       |
+|:------------:|:----------:|:-----------------:|
+|   [Argon2]   | `argon2id` |   `$argon2id$`    |
+|   [Argon2]   | `argon2i`  |    `$argon2i$`    |
+|   [Argon2]   | `argon2d`  |    `$argon2d$`    |
+|   [Scrypt]   |    N/A     |    `$scrypt$`     |
+|   [PBKDF2]   |   `sha1`   |    `$pbkdf2$`     |
+|   [PBKDF2]   |  `sha224`  | `$pbkdf2-sha224$` |
+|   [PBKDF2]   |  `sha256`  | `$pbkdf2-sha256$` |
+|   [PBKDF2]   |  `sha384`  | `$pbkdf2-sha384$` |
+|   [PBKDF2]   |  `sha512`  | `$pbkdf2-sha512$` |
+| [SHA2 Crypt] |  `SHA256`  |       `$5$`       |
+| [SHA2 Crypt] |  `SHA512`  |       `$6$`       |
+|   [Bcrypt]   | `standard` |      `$2b$`       |
+|   [Bcrypt]   |  `sha256`  | `$bcrypt-sha256$` |
 
 See the [Crypt (C) Wiki page](https://en.wikipedia.org/wiki/Crypt_(C)) for more information.
 
@@ -140,27 +159,44 @@ adequately determine the [cost](#cost).
 While there are recommended parameters for each algorithm it's your responsibility to tune these individually for your
 particular system.
 
-#### Recommended Parameters: Argon2id
+#### Algorithm Choice
+
+We generally discourage [Bcrypt] except when needed for interoperability with legacy systems. The `argon2id` variant of
+the [Argon2] algorithm is the best choice of the algorithms available, but it's important to note that the `argon2id`
+variant is the most resilient variant, followed by the `argon2d` variant and the `argon2i` variant not being recommended.
+It's strongly recommended if you're unsure that you use `argon2id`. [Scrypt] is a likely second best algorithm. [PBKDF2]
+is practically the only choice when it comes to [FIPS-140 compliance]. The `sha512` variant of the [SHA2 Crypt]
+algorithm is also a reasonable option, but is mainly available for backwards compatability.
+
+All other algorithms and variants available exist only for interoperability and we discourage their use if a better
+algorithm is available in your scenario.
+
+#### Recommended Parameters: Argon2
 
 This table adapts the [RFC9106 Parameter Choice] recommendations to our configuration options:
 
-|  Situation  | Iterations (t) | Parallelism (p) | Memory (m) | Salt Size | Key Size |
-|:-----------:|:--------------:|:---------------:|:----------:|:---------:|:--------:|
-| Low Memory  |       3        |        4        |     64     |    16     |    32    |
-| Recommended |       1        |        4        |    2048    |    16     |    32    |
+|  Situation  | Variant  | Iterations (t) | Parallelism (p) | Memory (m) | Salt Size | Key Size |
+|:-----------:|:--------:|:--------------:|:---------------:|:----------:|:---------:|:--------:|
+| Low Memory  | argon2id |       3        |        4        |   65536    |    16     |    32    |
+| Recommended | argon2id |       1        |        4        |  2097152   |    16     |    32    |
 
-#### Recommended Parameters: SHA512
+#### Recommended Parameters: SHA2 Crypt
 
-This table suggests the parameters for the [SHA Crypt] (`SHA512` variant) algorithm:
+This table suggests the parameters for the [SHA2 Crypt] algorithm:
 
-|  Situation   | Iterations (rounds) | Salt Size |
-|:------------:|:-------------------:|:---------:|
-| Standard CPU |        50000        |    16     |
-| High End CPU |       150000        |    16     |
+|  Situation   | Variant | Iterations (rounds) | Salt Size |
+|:------------:|:-------:|:-------------------:|:---------:|
+| Standard CPU | sha512  |        50000        |    16     |
+| High End CPU | sha512  |       150000        |    16     |
+
+[Argon2]: https://www.rfc-editor.org/rfc/rfc9106.html
+[Scrypt]: https://en.wikipedia.org/wiki/Scrypt
+[PBKDF2]: https://www.ietf.org/rfc/rfc2898.html
+[SHA2 Crypt]: https://www.akkadia.org/drepper/SHA-crypt.txt
+[Bcrypt]: https://en.wikipedia.org/wiki/Bcrypt
+[FIPS-140 compliance]: https://csrc.nist.gov/publications/detail/fips/140/2/final
 
 [RFC9106 Parameter Choice]: https://www.rfc-editor.org/rfc/rfc9106.html#section-4
 [YAML]: https://yaml.org/
-[Argon2]: https://www.rfc-editor.org/rfc/rfc9106.html
-[SHA Crypt]: https://www.akkadia.org/drepper/SHA-crypt.txt
-[hash-password]: ../cli/authelia/authelia_hash-password.md
+[crypt hash generate]: ../cli/authelia/authelia_crypto_hash_generate.md
 [Password Hashing Competition]: https://en.wikipedia.org/wiki/Password_Hashing_Competition

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/fasthttp/router v1.4.12
 	github.com/fasthttp/session/v2 v2.4.13
 	github.com/go-asn1-ber/asn1-ber v1.5.4
+	github.com/go-crypt/crypt v0.1.13
 	github.com/go-ldap/ldap/v3 v3.4.4
 	github.com/go-rod/rod v0.111.0
 	github.com/go-sql-driver/mysql v1.6.0
@@ -29,7 +30,6 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/pquerna/otp v1.3.0
 	github.com/prometheus/client_golang v1.13.0
-	github.com/simia-tech/crypt v0.5.1
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.6.0
 	github.com/spf13/pflag v1.0.5
@@ -37,6 +37,7 @@ require (
 	github.com/trustelem/zxcvbn v1.0.1
 	github.com/valyala/fasthttp v1.40.0
 	golang.org/x/sync v0.0.0-20220929204114-8fcdb60fdcc0
+	golang.org/x/term v0.0.0-20220919170432-7a66f970e087
 	golang.org/x/text v0.3.8
 	gopkg.in/square/go-jose.v2 v2.6.0
 	gopkg.in/yaml.v3 v3.0.1
@@ -57,6 +58,7 @@ require (
 	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
 	github.com/fsnotify/fsnotify v1.5.1 // indirect
 	github.com/fxamacker/cbor/v2 v2.4.0 // indirect
+	github.com/go-crypt/x v0.1.3 // indirect
 	github.com/go-redis/redis/v8 v8.11.5 // indirect
 	github.com/go-webauthn/revoke v0.1.3 // indirect
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
@@ -106,7 +108,7 @@ require (
 	golang.org/x/crypto v0.0.0-20220817201139-bc19a97f63c8 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
 	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
-	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
+	golang.org/x/sys v0.0.0-20221013171732-95e765b1cc43 // indirect
 	golang.org/x/tools v0.1.12 // indirect
 	google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect
 	google.golang.org/grpc v1.42.0 // indirect
@@ -115,4 +117,4 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
 
-replace github.com/mattn/go-sqlite3 v2.0.3+incompatible => github.com/mattn/go-sqlite3 v1.14.14
+replace github.com/mattn/go-sqlite3 v2.0.3+incompatible => github.com/mattn/go-sqlite3 v1.14.15

go.sum

@@ -239,6 +239,10 @@ github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0
 github.com/go-asn1-ber/asn1-ber v1.5.4 h1:vXT6d/FNDiELJnLb6hGNa309LMsrCoYFvpwHDF0+Y1A=
 github.com/go-asn1-ber/asn1-ber v1.5.4/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-bindata/go-bindata v3.1.1+incompatible/go.mod h1:xK8Dsgwmeed+BBsSy2XTopBn/8uK2HWuGSnA11C3Joo=
+github.com/go-crypt/crypt v0.1.13 h1:MdmKsHjuT17LmFROTMtGEXBgojN23OyWhmV6JfGZNvw=
+github.com/go-crypt/crypt v0.1.13/go.mod h1:VNLdWMD0go46arq5WVZB2MV/9Vw02FOWhKDORXl7K2c=
+github.com/go-crypt/x v0.1.3 h1:3YSlHqOZsw4gcPzfqrcc5kg4GIhTKmkjl/ZVqJ3CbbU=
+github.com/go-crypt/x v0.1.3/go.mod h1:/6X1DjQki055ajXV/7pCHZM0OmMR1+csiXFkxK73Kc8=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -959,8 +963,7 @@ github.com/mattn/go-sqlite3 v1.9.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOq
 github.com/mattn/go-sqlite3 v1.10.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/mattn/go-sqlite3 v1.11.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
-github.com/mattn/go-sqlite3 v1.14.14 h1:qZgc/Rwetq+MtyE18WhzjokPD93dNqLGNT3QJuLvBGw=
-github.com/mattn/go-sqlite3 v1.14.14/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
+github.com/mattn/go-sqlite3 v1.14.15 h1:vfoHhTN1af61xCRSWzFIWzx2YskyMTwHLrExkBOjvxI=
 github.com/mattn/go-sqlite3 v1.14.15/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/mattn/goveralls v0.0.2/go.mod h1:8d1ZMHsd7fW6IRPKQh46F2WRpyib5/X4FOpevwGNQEw=
 github.com/mattn/goveralls v0.0.6 h1:cr8Y0VMo/MnEZBjxNN/vh6G90SZ7IMb6lms1dzMoO+Y=
@@ -1248,8 +1251,6 @@ github.com/shurcooL/highlight_go v0.0.0-20170515013102-78fb10f4a5f8/go.mod h1:UD
 github.com/shurcooL/octicon v0.0.0-20180602230221-c42b0e3b24d9/go.mod h1:eWdoE5JD4R5UVWDucdOPg1g2fqQRq78IQa9zlOV1vpQ=
 github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
-github.com/simia-tech/crypt v0.5.1 h1:rQa3qz8Xx4zNu4Uwtl4e6l7AKZBhYLrawZGfZjRLJYU=
-github.com/simia-tech/crypt v0.5.1/go.mod h1:VUAuUEkBhS6nI4JupmA8WBg+tkcZCSANpFSMLpsJAcQ=
 github.com/sirupsen/logrus v1.0.4-0.20170822132746-89742aefa4b2/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/sirupsen/logrus v1.0.6/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/sirupsen/logrus v1.1.0/go.mod h1:zrgwTnHtNr00buQ1vSptGe8m1f/BbgsPukg8qsT7A+A=
@@ -1317,7 +1318,6 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/testify v1.2.0/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
@@ -1493,7 +1493,6 @@ golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm
 golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220214200702-86341886e292/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220817201139-bc19a97f63c8 h1:GIAS/yBem/gq2MUqgNIzUHW7cJMmx3TGZOrnyYaNQ6c=
@@ -1722,11 +1721,13 @@ golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20221013171732-95e765b1cc43 h1:OK7RB6t2WQX54srQQYSXMW8dF5C6/8+oA/s5QBmmto4=
+golang.org/x/sys v0.0.0-20221013171732-95e765b1cc43/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.0.0-20220919170432-7a66f970e087 h1:tPwmk4vmvVCMdr98VgL4JH+qZxPL8fqlUOHnyOM8N3w=
+golang.org/x/term v0.0.0-20220919170432-7a66f970e087/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

internal/authentication/const.go

@@ -65,6 +65,10 @@ const (
 	ldapAttributeUserPassword = "userPassword"
 )
 
+const (
+	ldapBaseObjectFilter = "(objectClass=*)"
+)
+
 const (
 	ldapPlaceholderInput             = "{input}"
 	ldapPlaceholderDistinguishedName = "{dn}"
@@ -75,37 +79,17 @@ const (
 	none = "none"
 )
 
-// CryptAlgo the crypt representation of an algorithm used in the prefix of the hash.
-type CryptAlgo string
-
 const (
-	// HashingAlgorithmArgon2id Argon2id hash identifier.
-	HashingAlgorithmArgon2id CryptAlgo = argon2id
-	// HashingAlgorithmSHA512 SHA512 hash identifier.
-	HashingAlgorithmSHA512 CryptAlgo = "6"
+	hashArgon2    = "argon2"
+	hashSHA2Crypt = "sha2crypt"
+	hashPBKDF2    = "pbkdf2"
+	hashSCrypt    = "scrypt"
+	hashBCrypt    = "bcrypt"
 )
 
-// These are the default values from the upstream crypt module we use them to for GetInt
-// and they need to be checked when updating github.com/simia-tech/crypt.
-const (
-	HashingDefaultArgon2idTime        = 1
-	HashingDefaultArgon2idMemory      = 32 * 1024
-	HashingDefaultArgon2idParallelism = 4
-	HashingDefaultArgon2idKeyLength   = 32
-	HashingDefaultSHA512Iterations    = 5000
-)
-
-// HashingPossibleSaltCharacters represents valid hashing runes.
-var HashingPossibleSaltCharacters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/"
-
 // ErrUserNotFound indicates the user wasn't found in the authentication backend.
 var ErrUserNotFound = errors.New("user not found")
 
-const argon2id = "argon2id"
-const sha512 = "sha512"
-
-const testPassword = "my;secure*password"
-
 const fileAuthenticationMode = 0600
 
 // OWASP recommends to escape some special characters.

internal/authentication/file_user_provider.go

@@ -4,11 +4,8 @@ import (
 	_ "embed" // Embed users_database.template.yml.
 	"fmt"
 	"os"
-	"strings"
-	"sync"
 
-	"github.com/asaskevich/govalidator"
-	"gopkg.in/yaml.v3"
+	"github.com/go-crypt/crypt"
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
 	"github.com/authelia/authelia/v4/internal/logging"
@@ -16,196 +13,148 @@ import (
 
 // FileUserProvider is a provider reading details from a file.
 type FileUserProvider struct {
-	configuration *schema.FileAuthenticationBackendConfiguration
-	database      *DatabaseModel
-	lock          *sync.Mutex
-}
-
-// UserDetailsModel is the model of user details in the file database.
-type UserDetailsModel struct {
-	HashedPassword string   `yaml:"password" valid:"required"`
-	DisplayName    string   `yaml:"displayname" valid:"required"`
-	Email          string   `yaml:"email"`
-	Groups         []string `yaml:"groups"`
-}
-
-// DatabaseModel is the model of users file database.
-type DatabaseModel struct {
-	Users map[string]UserDetailsModel `yaml:"users" valid:"required"`
+	config   *schema.FileAuthenticationBackend
+	hash     crypt.Hash
+	database *FileUserDatabase
 }
 
 // NewFileUserProvider creates a new instance of FileUserProvider.
-func NewFileUserProvider(configuration *schema.FileAuthenticationBackendConfiguration) *FileUserProvider {
-	logger := logging.Logger()
-
-	errs := checkDatabase(configuration.Path)
-	if errs != nil {
-		for _, err := range errs {
-			logger.Error(err)
-		}
-
-		os.Exit(1)
-	}
-
-	database, err := readDatabase(configuration.Path)
-	if err != nil {
-		// Panic since the file does not exist when Authelia is starting.
-		panic(err)
-	}
-
-	// Early check whether hashed passwords are correct for all users.
-	err = checkPasswordHashes(database)
-	if err != nil {
-		panic(err)
-	}
-
+func NewFileUserProvider(config *schema.FileAuthenticationBackend) (provider *FileUserProvider) {
 	return &FileUserProvider{
-		configuration: configuration,
-		database:      database,
-		lock:          &sync.Mutex{},
+		config: config,
 	}
 }
 
-func checkPasswordHashes(database *DatabaseModel) error {
-	for u, v := range database.Users {
-		v.HashedPassword = strings.ReplaceAll(v.HashedPassword, "{CRYPT}", "")
-		_, err := ParseHash(v.HashedPassword)
+// CheckUserPassword checks if provided password matches for the given user.
+func (p *FileUserProvider) CheckUserPassword(username string, password string) (match bool, err error) {
+	var details DatabaseUserDetails
 
-		if err != nil {
-			return fmt.Errorf("Unable to parse hash of user %s: %s", u, err)
-		}
+	if details, err = p.database.GetUserDetails(username); err != nil {
+		return false, err
+	}
 
-		database.Users[u] = v
+	if details.Disabled {
+		return false, ErrUserNotFound
+	}
+
+	return details.Digest.MatchAdvanced(password)
+}
+
+// GetDetails retrieve the groups a user belongs to.
+func (p *FileUserProvider) GetDetails(username string) (details *UserDetails, err error) {
+	var d DatabaseUserDetails
+
+	if d, err = p.database.GetUserDetails(username); err != nil {
+		return nil, err
+	}
+
+	if d.Disabled {
+		return nil, ErrUserNotFound
+	}
+
+	return d.ToUserDetails(), nil
+}
+
+// UpdatePassword update the password of the given user.
+func (p *FileUserProvider) UpdatePassword(username string, newPassword string) (err error) {
+	var details DatabaseUserDetails
+
+	if details, err = p.database.GetUserDetails(username); err != nil {
+		return err
+	}
+
+	if details.Disabled {
+		return ErrUserNotFound
+	}
+
+	if details.Digest, err = p.hash.Hash(newPassword); err != nil {
+		return err
+	}
+
+	p.database.SetUserDetails(details.Username, &details)
+
+	if err = p.database.Save(); err != nil {
+		return err
 	}
 
 	return nil
 }
 
-func checkDatabase(path string) []error {
-	_, err := os.Stat(path)
-	if err != nil {
-		errs := []error{
-			fmt.Errorf("Unable to find database file: %v", path),
-			fmt.Errorf("Generating database file: %v", path),
+// StartupCheck implements the startup check provider interface.
+func (p *FileUserProvider) StartupCheck() (err error) {
+	if err = checkDatabase(p.config.Path); err != nil {
+		logging.Logger().WithError(err).Errorf("Error checking user authentication YAML database")
+
+		return fmt.Errorf("one or more errors occurred checking the authentication database")
+	}
+
+	if p.hash, err = NewFileCryptoHashFromConfig(p.config.Password); err != nil {
+		return err
+	}
+
+	p.database = NewFileUserDatabase(p.config.Path)
+
+	if err = p.database.Load(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// NewFileCryptoHashFromConfig returns a crypt.Hash given a valid configuration.
+func NewFileCryptoHashFromConfig(config schema.Password) (hash crypt.Hash, err error) {
+	switch config.Algorithm {
+	case hashArgon2, "":
+		hash = crypt.NewArgon2Hash().
+			WithVariant(crypt.NewArgon2Variant(config.Argon2.Variant)).
+			WithT(config.Argon2.Iterations).
+			WithM(config.Argon2.Memory).
+			WithP(config.Argon2.Parallelism).
+			WithK(config.Argon2.KeyLength).
+			WithS(config.Argon2.SaltLength)
+	case hashSHA2Crypt:
+		hash = crypt.NewSHA2CryptHash().
+			WithVariant(crypt.NewSHA2CryptVariant(config.SHA2Crypt.Variant)).
+			WithRounds(config.SHA2Crypt.Iterations).
+			WithSaltLength(config.SHA2Crypt.SaltLength)
+	case hashPBKDF2:
+		hash = crypt.NewPBKDF2Hash().
+			WithVariant(crypt.NewPBKDF2Variant(config.PBKDF2.Variant)).
+			WithIterations(config.PBKDF2.Iterations).
+			WithSaltLength(config.PBKDF2.SaltLength)
+	case hashSCrypt:
+		hash = crypt.NewScryptHash().
+			WithLN(config.SCrypt.Iterations).
+			WithP(config.SCrypt.Parallelism).
+			WithR(config.SCrypt.BlockSize)
+	case hashBCrypt:
+		hash = crypt.NewBcryptHash().
+			WithVariant(crypt.NewBcryptVariant(config.BCrypt.Variant)).
+			WithCost(config.BCrypt.Cost)
+	default:
+		return nil, fmt.Errorf("algorithm '%s' is unknown", config.Algorithm)
+	}
+
+	if err = hash.Validate(); err != nil {
+		return nil, fmt.Errorf("failed to validate hash settings: %w", err)
+	}
+
+	return hash, nil
+}
+
+func checkDatabase(path string) (err error) {
+	if _, err = os.Stat(path); os.IsNotExist(err) {
+		if err = os.WriteFile(path, userYAMLTemplate, 0600); err != nil {
+			return fmt.Errorf("user authentication database file doesn't exist at path '%s' and could not be generated: %w", path, err)
 		}
 
-		err := generateDatabaseFromTemplate(path)
-		if err != nil {
-			errs = append(errs, err)
-		} else {
-			errs = append(errs, fmt.Errorf("Generated database at: %v", path))
-		}
-
-		return errs
+		return fmt.Errorf("user authentication database file doesn't exist at path '%s' and has been generated", path)
+	} else if err != nil {
+		return fmt.Errorf("error checking user authentication database file: %w", err)
 	}
 
 	return nil
 }
 
 //go:embed users_database.template.yml
-var cfg []byte
-
-func generateDatabaseFromTemplate(path string) error {
-	err := os.WriteFile(path, cfg, 0600)
-	if err != nil {
-		return fmt.Errorf("Unable to generate %v: %v", path, err)
-	}
-
-	return nil
-}
-
-func readDatabase(path string) (*DatabaseModel, error) {
-	content, err := os.ReadFile(path)
-	if err != nil {
-		return nil, fmt.Errorf("Unable to read database from file %s: %s", path, err)
-	}
-
-	db := DatabaseModel{}
-
-	err = yaml.Unmarshal(content, &db)
-	if err != nil {
-		return nil, fmt.Errorf("Unable to parse database: %s", err)
-	}
-
-	ok, err := govalidator.ValidateStruct(db)
-	if err != nil {
-		return nil, fmt.Errorf("Invalid schema of database: %s", err)
-	}
-
-	if !ok {
-		return nil, fmt.Errorf("The database format is invalid: %s", err)
-	}
-
-	return &db, nil
-}
-
-// CheckUserPassword checks if provided password matches for the given user.
-func (p *FileUserProvider) CheckUserPassword(username string, password string) (bool, error) {
-	if details, ok := p.database.Users[username]; ok {
-		ok, err := CheckPassword(password, details.HashedPassword)
-		if err != nil {
-			return false, err
-		}
-
-		return ok, nil
-	}
-
-	return false, ErrUserNotFound
-}
-
-// GetDetails retrieve the groups a user belongs to.
-func (p *FileUserProvider) GetDetails(username string) (*UserDetails, error) {
-	if details, ok := p.database.Users[username]; ok {
-		return &UserDetails{
-			Username:    username,
-			DisplayName: details.DisplayName,
-			Groups:      details.Groups,
-			Emails:      []string{details.Email},
-		}, nil
-	}
-
-	return nil, fmt.Errorf("User '%s' does not exist in database", username)
-}
-
-// UpdatePassword update the password of the given user.
-func (p *FileUserProvider) UpdatePassword(username string, newPassword string) error {
-	details, ok := p.database.Users[username]
-	if !ok {
-		return ErrUserNotFound
-	}
-
-	algorithm, err := ConfigAlgoToCryptoAlgo(p.configuration.Password.Algorithm)
-	if err != nil {
-		return err
-	}
-
-	hash, err := HashPassword(
-		newPassword, "", algorithm, p.configuration.Password.Iterations,
-		p.configuration.Password.Memory*1024, p.configuration.Password.Parallelism,
-		p.configuration.Password.KeyLength, p.configuration.Password.SaltLength)
-
-	if err != nil {
-		return err
-	}
-
-	details.HashedPassword = hash
-
-	p.lock.Lock()
-	p.database.Users[username] = details
-
-	b, err := yaml.Marshal(p.database)
-	if err != nil {
-		p.lock.Unlock()
-		return err
-	}
-
-	err = os.WriteFile(p.configuration.Path, b, fileAuthenticationMode)
-	p.lock.Unlock()
-
-	return err
-}
-
-// StartupCheck implements the startup check provider interface.
-func (p *FileUserProvider) StartupCheck() (err error) {
-	return nil
-}
+var userYAMLTemplate []byte

internal/authentication/file_user_provider_database.go

@@ -0,0 +1,222 @@
+package authentication
+
+import (
+	"fmt"
+	"os"
+	"sync"
+
+	"github.com/asaskevich/govalidator"
+	"github.com/go-crypt/crypt"
+	"gopkg.in/yaml.v3"
+)
+
+// NewFileUserDatabase creates a new FileUserDatabase.
+func NewFileUserDatabase(filePath string) (database *FileUserDatabase) {
+	return &FileUserDatabase{
+		RWMutex: &sync.RWMutex{},
+		Path:    filePath,
+		Users:   map[string]DatabaseUserDetails{},
+	}
+}
+
+// FileUserDatabase is a user details database that is concurrency safe database and can be reloaded.
+type FileUserDatabase struct {
+	*sync.RWMutex
+
+	Path  string
+	Users map[string]DatabaseUserDetails
+}
+
+// Save the database to disk.
+func (m *FileUserDatabase) Save() (err error) {
+	m.RLock()
+
+	defer m.RUnlock()
+
+	if err = m.ToDatabaseModel().Write(m.Path); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Load the database from disk.
+func (m *FileUserDatabase) Load() (err error) {
+	yml := &DatabaseModel{Users: map[string]UserDetailsModel{}}
+
+	if err = yml.Read(m.Path); err != nil {
+		return fmt.Errorf("error reading the authentication database: %w", err)
+	}
+
+	m.Lock()
+
+	defer m.Unlock()
+
+	if err = yml.ReadToFileUserDatabase(m); err != nil {
+		return fmt.Errorf("error decoding the authentication database: %w", err)
+	}
+
+	return nil
+}
+
+// GetUserDetails get a DatabaseUserDetails given a username as a value type where the username must be the users actual
+// username.
+func (m *FileUserDatabase) GetUserDetails(username string) (user DatabaseUserDetails, err error) {
+	m.RLock()
+
+	defer m.RUnlock()
+
+	if details, ok := m.Users[username]; ok {
+		return details, nil
+	}
+
+	return user, ErrUserNotFound
+}
+
+// SetUserDetails sets the DatabaseUserDetails for a given user.
+func (m *FileUserDatabase) SetUserDetails(username string, details *DatabaseUserDetails) {
+	if details == nil {
+		return
+	}
+
+	m.Lock()
+
+	m.Users[username] = *details
+
+	m.Unlock()
+}
+
+// ToDatabaseModel converts the FileUserDatabase into the DatabaseModel for saving.
+func (m *FileUserDatabase) ToDatabaseModel() (model *DatabaseModel) {
+	model = &DatabaseModel{
+		Users: map[string]UserDetailsModel{},
+	}
+
+	m.RLock()
+
+	for user, details := range m.Users {
+		model.Users[user] = details.ToUserDetailsModel()
+	}
+
+	m.RUnlock()
+
+	return model
+}
+
+// DatabaseUserDetails is the model of user details in the file database.
+type DatabaseUserDetails struct {
+	Username    string
+	Digest      crypt.Digest
+	Disabled    bool
+	DisplayName string
+	Email       string
+	Groups      []string
+}
+
+// ToUserDetails converts DatabaseUserDetails into a *UserDetails given a username.
+func (m DatabaseUserDetails) ToUserDetails() (details *UserDetails) {
+	return &UserDetails{
+		Username:    m.Username,
+		DisplayName: m.DisplayName,
+		Emails:      []string{m.Email},
+		Groups:      m.Groups,
+	}
+}
+
+// ToUserDetailsModel converts DatabaseUserDetails into a UserDetailsModel.
+func (m DatabaseUserDetails) ToUserDetailsModel() (model UserDetailsModel) {
+	return UserDetailsModel{
+		HashedPassword: m.Digest.Encode(),
+		DisplayName:    m.DisplayName,
+		Email:          m.Email,
+		Groups:         m.Groups,
+	}
+}
+
+// DatabaseModel is the model of users file database.
+type DatabaseModel struct {
+	Users map[string]UserDetailsModel `yaml:"users" valid:"required"`
+}
+
+// ReadToFileUserDatabase reads the DatabaseModel into a FileUserDatabase.
+func (m *DatabaseModel) ReadToFileUserDatabase(db *FileUserDatabase) (err error) {
+	users := map[string]DatabaseUserDetails{}
+
+	var udm *DatabaseUserDetails
+
+	for user, details := range m.Users {
+		if udm, err = details.ToDatabaseUserDetailsModel(user); err != nil {
+			return fmt.Errorf("failed to parse hash for user '%s': %w", user, err)
+		}
+
+		users[user] = *udm
+	}
+
+	db.Users = users
+
+	return nil
+}
+
+// Read a DatabaseModel from disk.
+func (m *DatabaseModel) Read(filePath string) (err error) {
+	var (
+		content []byte
+		ok      bool
+	)
+
+	if content, err = os.ReadFile(filePath); err != nil {
+		return fmt.Errorf("failed to read the '%s' file: %w", filePath, err)
+	}
+
+	if err = yaml.Unmarshal(content, m); err != nil {
+		return fmt.Errorf("could not parse the YAML database: %w", err)
+	}
+
+	if ok, err = govalidator.ValidateStruct(m); err != nil {
+		return fmt.Errorf("could not validate the schema: %w", err)
+	}
+
+	if !ok {
+		return fmt.Errorf("the schema is invalid")
+	}
+
+	return nil
+}
+
+// Write a DatabaseModel to disk.
+func (m *DatabaseModel) Write(fileName string) (err error) {
+	var (
+		data []byte
+	)
+
+	if data, err = yaml.Marshal(m); err != nil {
+		return err
+	}
+
+	return os.WriteFile(fileName, data, fileAuthenticationMode)
+}
+
+// UserDetailsModel is the model of user details in the file database.
+type UserDetailsModel struct {
+	HashedPassword string   `yaml:"password" valid:"required"`
+	DisplayName    string   `yaml:"displayname" valid:"required"`
+	Email          string   `yaml:"email"`
+	Groups         []string `yaml:"groups"`
+}
+
+// ToDatabaseUserDetailsModel converts a UserDetailsModel into a *DatabaseUserDetails.
+func (m UserDetailsModel) ToDatabaseUserDetailsModel(username string) (model *DatabaseUserDetails, err error) {
+	var d crypt.Digest
+
+	if d, err = crypt.Decode(m.HashedPassword); err != nil {
+		return nil, err
+	}
+
+	return &DatabaseUserDetails{
+		Username:    username,
+		Digest:      d,
+		DisplayName: m.DisplayName,
+		Email:       m.Email,
+		Groups:      m.Groups,
+	}, nil
+}

internal/authentication/file_user_provider_test.go

@@ -39,24 +39,16 @@ func TestShouldErrorPermissionsOnLocalFS(t *testing.T) {
 	}
 
 	_ = os.Mkdir("/tmp/noperms/", 0000)
-	errors := checkDatabase("/tmp/noperms/users_database.yml")
+	err := checkDatabase("/tmp/noperms/users_database.yml")
 
-	require.Len(t, errors, 3)
-
-	require.EqualError(t, errors[0], "Unable to find database file: /tmp/noperms/users_database.yml")
-	require.EqualError(t, errors[1], "Generating database file: /tmp/noperms/users_database.yml")
-	require.EqualError(t, errors[2], "Unable to generate /tmp/noperms/users_database.yml: open /tmp/noperms/users_database.yml: permission denied")
+	require.EqualError(t, err, "error checking user authentication database file: stat /tmp/noperms/users_database.yml: permission denied")
 }
 
 func TestShouldErrorAndGenerateUserDB(t *testing.T) {
-	errors := checkDatabase("./nonexistent.yml")
+	err := checkDatabase("./nonexistent.yml")
 	_ = os.Remove("./nonexistent.yml")
 
-	require.Len(t, errors, 3)
-
-	require.EqualError(t, errors[0], "Unable to find database file: ./nonexistent.yml")
-	require.EqualError(t, errors[1], "Generating database file: ./nonexistent.yml")
-	require.EqualError(t, errors[2], "Generated database at: ./nonexistent.yml")
+	require.EqualError(t, err, "user authentication database file doesn't exist at path './nonexistent.yml' and has been generated")
 }
 
 func TestShouldCheckUserArgon2idPasswordIsCorrect(t *testing.T) {
@@ -64,6 +56,9 @@ func TestShouldCheckUserArgon2idPasswordIsCorrect(t *testing.T) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("john", "password")
 
 		assert.NoError(t, err)
@@ -75,7 +70,11 @@ func TestShouldCheckUserSHA512PasswordIsCorrect(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("harry", "password")
 
 		assert.NoError(t, err)
@@ -87,7 +86,11 @@ func TestShouldCheckUserPasswordIsWrong(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("john", "wrong_password")
 
 		assert.NoError(t, err)
@@ -99,8 +102,11 @@ func TestShouldCheckUserPasswordIsWrongForEnumerationCompare(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
 
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("enumeration", "wrong_password")
 		assert.NoError(t, err)
 		assert.False(t, ok)
@@ -111,7 +117,11 @@ func TestShouldCheckUserPasswordOfUserThatDoesNotExist(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("fake", "password")
 		assert.Error(t, err)
 		assert.Equal(t, false, ok)
@@ -123,12 +133,16 @@ func TestShouldRetrieveUserDetails(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		details, err := provider.GetDetails("john")
 		assert.NoError(t, err)
-		assert.Equal(t, details.Username, "john")
-		assert.Equal(t, details.Emails, []string{"john.doe@authelia.com"})
-		assert.Equal(t, details.Groups, []string{"admins", "dev"})
+		assert.Equal(t, "john", details.Username)
+		assert.Equal(t, []string{"john.doe@authelia.com"}, details.Emails)
+		assert.Equal(t, []string{"admins", "dev"}, details.Groups)
 	})
 }
 
@@ -136,12 +150,19 @@ func TestShouldUpdatePassword(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		err := provider.UpdatePassword("harry", "newpassword")
 		assert.NoError(t, err)
 
 		// Reset the provider to force a read from disk.
 		provider = NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("harry", "newpassword")
 		assert.NoError(t, err)
 		assert.True(t, ok)
@@ -153,17 +174,24 @@ func TestShouldUpdatePasswordHashingAlgorithmToArgon2id(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
-		assert.True(t, strings.HasPrefix(provider.database.Users["harry"].HashedPassword, "$6$"))
+
+		assert.NoError(t, provider.StartupCheck())
+
+		assert.True(t, strings.HasPrefix(provider.database.Users["harry"].Digest.Encode(), "$6$"))
 		err := provider.UpdatePassword("harry", "newpassword")
 		assert.NoError(t, err)
 
 		// Reset the provider to force a read from disk.
 		provider = NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("harry", "newpassword")
 		assert.NoError(t, err)
 		assert.True(t, ok)
-		assert.True(t, strings.HasPrefix(provider.database.Users["harry"].HashedPassword, "$argon2id$"))
+		assert.True(t, strings.HasPrefix(provider.database.Users["harry"].Digest.Encode(), "$argon2id$"))
 	})
 }
 
@@ -171,20 +199,26 @@ func TestShouldUpdatePasswordHashingAlgorithmToSHA512(t *testing.T) {
 	WithDatabase(UserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		config.Password.Algorithm = "sha512"
-		config.Password.Iterations = 50000
+		config.Password.Algorithm = "sha2crypt"
+		config.Password.SHA2Crypt.Iterations = 50000
 
 		provider := NewFileUserProvider(&config)
-		assert.True(t, strings.HasPrefix(provider.database.Users["john"].HashedPassword, "$argon2id$"))
+
+		assert.NoError(t, provider.StartupCheck())
+
+		assert.True(t, strings.HasPrefix(provider.database.Users["john"].Digest.Encode(), "$argon2id$"))
 		err := provider.UpdatePassword("john", "newpassword")
 		assert.NoError(t, err)
 
 		// Reset the provider to force a read from disk.
 		provider = NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("john", "newpassword")
 		assert.NoError(t, err)
 		assert.True(t, ok)
-		assert.True(t, strings.HasPrefix(provider.database.Users["john"].HashedPassword, "$6$"))
+		assert.True(t, strings.HasPrefix(provider.database.Users["john"].Digest.Encode(), "$6$"))
 	})
 }
 
@@ -192,9 +226,10 @@ func TestShouldRaiseWhenLoadingMalformedDatabaseForFirstTime(t *testing.T) {
 	WithDatabase(MalformedUserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Unable to parse database: yaml: line 4: mapping values are not allowed in this context", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error reading the authentication database: could not parse the YAML database: yaml: line 4: mapping values are not allowed in this context")
 	})
 }
 
@@ -202,9 +237,10 @@ func TestShouldRaiseWhenLoadingDatabaseWithBadSchemaForFirstTime(t *testing.T) {
 	WithDatabase(BadSchemaUserDatabaseContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Invalid schema of database: Users: non zero value required", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error reading the authentication database: could not validate the schema: Users: non zero value required")
 	})
 }
 
@@ -212,9 +248,10 @@ func TestShouldRaiseWhenLoadingDatabaseWithBadSHA512HashesForTheFirstTime(t *tes
 	WithDatabase(BadSHA512HashContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Unable to parse hash of user john: Hash key is not the last parameter, the hash is likely malformed ($6$rounds00000$jgiCMRyGXzoqpxS3$w2pJeZnnH8bwW3zzvoMWtTRfQYsHbWbD/hquuQ5vUeIyl9gdwBIt6RWk2S6afBA0DPakbeWgD/4SZPiS0hYtU/)", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error decoding the authentication database: failed to parse hash for user 'john': sha2crypt decode error: provided encoded hash has an invalid option: option 'rounds00000' is invalid")
 	})
 }
 
@@ -222,9 +259,10 @@ func TestShouldRaiseWhenLoadingDatabaseWithBadArgon2idHashSettingsForTheFirstTim
 	WithDatabase(BadArgon2idHashSettingsContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Unable to parse hash of user john: Hash key is not the last parameter, the hash is likely malformed ($argon2id$v=19$m65536,t3,p2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM)", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error decoding the authentication database: failed to parse hash for user 'john': argon2 decode error: provided encoded hash has an invalid option: option 'm65536' is invalid")
 	})
 }
 
@@ -232,9 +270,10 @@ func TestShouldRaiseWhenLoadingDatabaseWithBadArgon2idHashKeyForTheFirstTime(t *
 	WithDatabase(BadArgon2idHashKeyContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Unable to parse hash of user john: Hash key contains invalid base64 characters", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error decoding the authentication database: failed to parse hash for user 'john': argon2 decode error: provided encoded hash has a key value that can't be decoded: illegal base64 data at input byte 0")
 	})
 }
 
@@ -242,9 +281,10 @@ func TestShouldRaiseWhenLoadingDatabaseWithBadArgon2idHashSaltForTheFirstTime(t
 	WithDatabase(BadArgon2idHashSaltContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
-		assert.PanicsWithError(t, "Unable to parse hash of user john: Salt contains invalid base64 characters", func() {
-			NewFileUserProvider(&config)
-		})
+
+		provider := NewFileUserProvider(&config)
+
+		assert.EqualError(t, provider.StartupCheck(), "error decoding the authentication database: failed to parse hash for user 'john': argon2 decode error: provided encoded hash has a salt value that can't be decoded: illegal base64 data at input byte 0")
 	})
 }
 
@@ -252,7 +292,11 @@ func TestShouldSupportHashPasswordWithoutCRYPT(t *testing.T) {
 	WithDatabase(UserDatabaseWithoutCryptContent, func(path string) {
 		config := DefaultFileAuthenticationBackendConfiguration
 		config.Path = path
+
 		provider := NewFileUserProvider(&config)
+
+		assert.NoError(t, provider.StartupCheck())
+
 		ok, err := provider.CheckUserPassword("john", "password")
 
 		assert.NoError(t, err)
@@ -261,16 +305,9 @@ func TestShouldSupportHashPasswordWithoutCRYPT(t *testing.T) {
 }
 
 var (
-	DefaultFileAuthenticationBackendConfiguration = schema.FileAuthenticationBackendConfiguration{
-		Path: "",
-		Password: &schema.PasswordConfiguration{
-			Iterations:  schema.DefaultCIPasswordConfiguration.Iterations,
-			KeyLength:   schema.DefaultCIPasswordConfiguration.KeyLength,
-			SaltLength:  schema.DefaultCIPasswordConfiguration.SaltLength,
-			Algorithm:   schema.DefaultCIPasswordConfiguration.Algorithm,
-			Memory:      schema.DefaultCIPasswordConfiguration.Memory,
-			Parallelism: schema.DefaultCIPasswordConfiguration.Parallelism,
-		},
+	DefaultFileAuthenticationBackendConfiguration = schema.FileAuthenticationBackend{
+		Path:     "",
+		Password: schema.DefaultCIPasswordConfig,
 	}
 )
 
@@ -385,6 +422,7 @@ users:
       - admins
       - dev
 `)
+
 var BadArgon2idHashSaltContent = []byte(`
 users:
   john:

internal/authentication/ldap_user_provider.go

@@ -17,7 +17,7 @@ import (
 
 // LDAPUserProvider is a UserProvider that connects to LDAP servers like ActiveDirectory, OpenLDAP, OpenDJ, FreeIPA, etc.
 type LDAPUserProvider struct {
-	config    schema.LDAPAuthenticationBackendConfiguration
+	config    schema.LDAPAuthenticationBackend
 	tlsConfig *tls.Config
 	dialOpts  []ldap.DialOpt
 	log       *logrus.Logger
@@ -42,15 +42,15 @@ type LDAPUserProvider struct {
 }
 
 // NewLDAPUserProvider creates a new instance of LDAPUserProvider.
-func NewLDAPUserProvider(config schema.AuthenticationBackendConfiguration, certPool *x509.CertPool) (provider *LDAPUserProvider) {
+func NewLDAPUserProvider(config schema.AuthenticationBackend, certPool *x509.CertPool) (provider *LDAPUserProvider) {
 	provider = newLDAPUserProvider(*config.LDAP, config.PasswordReset.Disable, certPool, nil)
 
 	return provider
 }
 
-func newLDAPUserProvider(config schema.LDAPAuthenticationBackendConfiguration, disableResetPassword bool, certPool *x509.CertPool, factory LDAPClientFactory) (provider *LDAPUserProvider) {
+func newLDAPUserProvider(config schema.LDAPAuthenticationBackend, disableResetPassword bool, certPool *x509.CertPool, factory LDAPClientFactory) (provider *LDAPUserProvider) {
 	if config.TLS == nil {
-		config.TLS = schema.DefaultLDAPAuthenticationBackendConfiguration.TLS
+		config.TLS = schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.TLS
 	}
 
 	tlsConfig := utils.NewTLSConfig(config.TLS, tls.VersionTLS12, certPool)
@@ -126,9 +126,9 @@ func (p *LDAPUserProvider) GetDetails(username string) (details *UserDetails, er
 	}
 
 	var (
-		filter        string
-		searchRequest *ldap.SearchRequest
-		searchResult  *ldap.SearchResult
+		filter  string
+		request *ldap.SearchRequest
+		result  *ldap.SearchResult
 	)
 
 	if filter, err = p.resolveGroupsFilter(username, profile); err != nil {
@@ -136,18 +136,18 @@ func (p *LDAPUserProvider) GetDetails(username string) (details *UserDetails, er
 	}
 
 	// Search for the users groups.
-	searchRequest = ldap.NewSearchRequest(
+	request = ldap.NewSearchRequest(
 		p.groupsBaseDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases,
 		0, 0, false, filter, p.groupsAttributes, nil,
 	)
 
-	if searchResult, err = p.search(client, searchRequest); err != nil {
+	if result, err = p.search(client, request); err != nil {
 		return nil, fmt.Errorf("unable to retrieve groups of user '%s'. Cause: %w", username, err)
 	}
 
 	groups := make([]string, 0)
 
-	for _, res := range searchResult.Entries {
+	for _, res := range result.Entries {
 		if len(res.Attributes) == 0 {
 			p.log.Warningf("No groups retrieved from LDAP for user %s", username)
 			break
@@ -254,35 +254,35 @@ func (p *LDAPUserProvider) connectCustom(url, username, password string, startTL
 	return client, nil
 }
 
-func (p *LDAPUserProvider) search(client LDAPClient, searchRequest *ldap.SearchRequest) (searchResult *ldap.SearchResult, err error) {
-	if searchResult, err = client.Search(searchRequest); err != nil {
+func (p *LDAPUserProvider) search(client LDAPClient, request *ldap.SearchRequest) (result *ldap.SearchResult, err error) {
+	if result, err = client.Search(request); err != nil {
 		if referral, ok := p.getReferral(err); ok {
-			if searchResult == nil {
-				searchResult = &ldap.SearchResult{
+			if result == nil {
+				result = &ldap.SearchResult{
 					Referrals: []string{referral},
 				}
 			} else {
-				searchResult.Referrals = append(searchResult.Referrals, referral)
+				result.Referrals = append(result.Referrals, referral)
 			}
 		}
 	}
 
-	if !p.config.PermitReferrals || len(searchResult.Referrals) == 0 {
+	if !p.config.PermitReferrals || len(result.Referrals) == 0 {
 		if err != nil {
 			return nil, err
 		}
 
-		return searchResult, nil
+		return result, nil
 	}
 
-	if err = p.searchReferrals(searchRequest, searchResult); err != nil {
+	if err = p.searchReferrals(request, result); err != nil {
 		return nil, err
 	}
 
-	return searchResult, nil
+	return result, nil
 }
 
-func (p *LDAPUserProvider) searchReferral(referral string, searchRequest *ldap.SearchRequest, searchResult *ldap.SearchResult) (err error) {
+func (p *LDAPUserProvider) searchReferral(referral string, request *ldap.SearchRequest, searchResult *ldap.SearchResult) (err error) {
 	var (
 		client LDAPClient
 		result *ldap.SearchResult
@@ -294,7 +294,7 @@ func (p *LDAPUserProvider) searchReferral(referral string, searchRequest *ldap.S
 
 	defer client.Close()
 
-	if result, err = client.Search(searchRequest); err != nil {
+	if result, err = client.Search(request); err != nil {
 		return fmt.Errorf("error occurred performing search on referred LDAP server '%s': %w", referral, err)
 	}
 
@@ -307,9 +307,9 @@ func (p *LDAPUserProvider) searchReferral(referral string, searchRequest *ldap.S
 	return nil
 }
 
-func (p *LDAPUserProvider) searchReferrals(searchRequest *ldap.SearchRequest, searchResult *ldap.SearchResult) (err error) {
-	for i := 0; i < len(searchResult.Referrals); i++ {
-		if err = p.searchReferral(searchResult.Referrals[i], searchRequest, searchResult); err != nil {
+func (p *LDAPUserProvider) searchReferrals(request *ldap.SearchRequest, result *ldap.SearchResult) (err error) {
+	for i := 0; i < len(result.Referrals); i++ {
+		if err = p.searchReferral(result.Referrals[i], request, result); err != nil {
 			return err
 		}
 	}
@@ -321,30 +321,30 @@ func (p *LDAPUserProvider) getUserProfile(client LDAPClient, username string) (p
 	userFilter := p.resolveUsersFilter(username)
 
 	// Search for the given username.
-	searchRequest := ldap.NewSearchRequest(
+	request := ldap.NewSearchRequest(
 		p.usersBaseDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases,
 		1, 0, false, userFilter, p.usersAttributes, nil,
 	)
 
-	var searchResult *ldap.SearchResult
+	var result *ldap.SearchResult
 
-	if searchResult, err = p.search(client, searchRequest); err != nil {
+	if result, err = p.search(client, request); err != nil {
 		return nil, fmt.Errorf("cannot find user DN of user '%s'. Cause: %w", username, err)
 	}
 
-	if len(searchResult.Entries) == 0 {
+	if len(result.Entries) == 0 {
 		return nil, ErrUserNotFound
 	}
 
-	if len(searchResult.Entries) > 1 {
-		return nil, fmt.Errorf("there were %d users found when searching for '%s' but there should only be 1", len(searchResult.Entries), username)
+	if len(result.Entries) > 1 {
+		return nil, fmt.Errorf("there were %d users found when searching for '%s' but there should only be 1", len(result.Entries), username)
 	}
 
 	userProfile := ldapUserProfile{
-		DN: searchResult.Entries[0].DN,
+		DN: result.Entries[0].DN,
 	}
 
-	for _, attr := range searchResult.Entries[0].Attributes {
+	for _, attr := range result.Entries[0].Attributes {
 		attrs := len(attr.Values)
 
 		if attr.Name == p.config.UsernameAttribute {

internal/authentication/ldap_user_provider_startup.go

@@ -47,14 +47,14 @@ func (p *LDAPUserProvider) StartupCheck() (err error) {
 
 func (p *LDAPUserProvider) getServerSupportedFeatures(client LDAPClient) (features LDAPSupportedFeatures, err error) {
 	var (
-		searchRequest *ldap.SearchRequest
-		searchResult  *ldap.SearchResult
+		request *ldap.SearchRequest
+		result  *ldap.SearchResult
 	)
 
-	searchRequest = ldap.NewSearchRequest("", ldap.ScopeBaseObject, ldap.NeverDerefAliases,
-		1, 0, false, "(objectClass=*)", []string{ldapSupportedExtensionAttribute, ldapSupportedControlAttribute}, nil)
+	request = ldap.NewSearchRequest("", ldap.ScopeBaseObject, ldap.NeverDerefAliases,
+		1, 0, false, ldapBaseObjectFilter, []string{ldapSupportedExtensionAttribute, ldapSupportedControlAttribute}, nil)
 
-	if searchResult, err = client.Search(searchRequest); err != nil {
+	if result, err = client.Search(request); err != nil {
 		if p.config.PermitFeatureDetectionFailure {
 			p.log.WithError(err).Warnf("Error occurred during RootDSE search. This may result in reduced functionality.")
 
@@ -64,7 +64,7 @@ func (p *LDAPUserProvider) getServerSupportedFeatures(client LDAPClient) (featur
 		return features, fmt.Errorf("error occurred during RootDSE search: %w", err)
 	}
 
-	if len(searchResult.Entries) != 1 {
+	if len(result.Entries) != 1 {
 		p.log.Errorf("The LDAP Server did not respond appropriately to a RootDSE search. This may result in reduced functionality.")
 
 		return features, nil
@@ -72,7 +72,7 @@ func (p *LDAPUserProvider) getServerSupportedFeatures(client LDAPClient) (featur
 
 	var controlTypeOIDs, extensionOIDs []string
 
-	controlTypeOIDs, extensionOIDs, features = ldapGetFeatureSupportFromEntry(searchResult.Entries[0])
+	controlTypeOIDs, extensionOIDs, features = ldapGetFeatureSupportFromEntry(result.Entries[0])
 
 	controlTypes, extensions := none, none
 

internal/authentication/ldap_user_provider_test.go

@@ -23,7 +23,7 @@ func TestShouldCreateRawConnectionWhenSchemeIsLDAP(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:      "ldap://127.0.0.1:389",
 			User:     "cn=admin,dc=example,dc=com",
 			Password: "password",
@@ -55,7 +55,7 @@ func TestShouldCreateTLSConnectionWhenSchemeIsLDAPS(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:      "ldaps://127.0.0.1:389",
 			User:     "cn=admin,dc=example,dc=com",
 			Password: "password",
@@ -105,7 +105,7 @@ func TestEscapeSpecialCharsInGroupsFilter(t *testing.T) {
 	mockFactory := NewMockLDAPClientFactory(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:          "ldaps://127.0.0.1:389",
 			GroupsFilter: "(|(member={dn})(uid={username})(uid={input}))",
 		},
@@ -163,7 +163,7 @@ func TestShouldCheckLDAPServerExtensions(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -228,7 +228,7 @@ func TestShouldNotCheckLDAPServerExtensionsWhenRootDSEReturnsMoreThanOneEntry(t
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -294,7 +294,7 @@ func TestShouldCheckLDAPServerControlTypes(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -359,7 +359,7 @@ func TestShouldNotEnablePasswdModifyExtensionOrControlTypes(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -424,7 +424,7 @@ func TestShouldReturnCheckServerConnectError(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -457,7 +457,7 @@ func TestShouldReturnCheckServerSearchError(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -519,7 +519,7 @@ func TestShouldEscapeUserInput(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsersFilter:          "(|({username_attribute}={input})({mail_attribute}={input}))",
@@ -553,7 +553,7 @@ func TestShouldReturnEmailWhenAttributeSameAsUsername(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -624,7 +624,7 @@ func TestShouldReturnUsernameAndBlankDisplayNameWhenAttributesTheSame(t *testing
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -695,7 +695,7 @@ func TestShouldReturnBlankEmailAndDisplayNameWhenAttrsLenZero(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -769,7 +769,7 @@ func TestShouldCombineUsernameFilterAndUsersFilter(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			UsernameAttribute:    "uid",
@@ -820,7 +820,7 @@ func TestShouldNotCrashWhenGroupsAreNotRetrievedFromLDAP(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -893,7 +893,7 @@ func TestShouldNotCrashWhenEmailsAreNotRetrievedFromLDAP(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:               "ldap://127.0.0.1:389",
 			User:              "cn=admin,dc=example,dc=com",
 			Password:          "password",
@@ -954,7 +954,7 @@ func TestShouldReturnUsernameFromLDAP(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1027,7 +1027,7 @@ func TestShouldReturnUsernameFromLDAPWithReferrals(t *testing.T) {
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1119,7 +1119,7 @@ func TestShouldReturnUsernameFromLDAPWithReferralsInErrorAndResult(t *testing.T)
 	mockClientReferralAlt := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1244,7 +1244,7 @@ func TestShouldReturnUsernameFromLDAPWithReferralsErr(t *testing.T) {
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1331,7 +1331,7 @@ func TestShouldNotUpdateUserPasswordConnect(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1398,7 +1398,7 @@ func TestShouldNotUpdateUserPasswordGetDetails(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1475,7 +1475,7 @@ func TestShouldUpdateUserPassword(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -1582,7 +1582,7 @@ func TestShouldUpdateUserPasswordMSAD(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -1692,7 +1692,7 @@ func TestShouldUpdateUserPasswordMSADWithReferrals(t *testing.T) {
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -1820,7 +1820,7 @@ func TestShouldUpdateUserPasswordMSADWithReferralsWithReferralConnectErr(t *test
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -1939,7 +1939,7 @@ func TestShouldUpdateUserPasswordMSADWithReferralsWithReferralModifyErr(t *testi
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -2071,7 +2071,7 @@ func TestShouldUpdateUserPasswordMSADWithoutReferrals(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -2185,7 +2185,7 @@ func TestShouldUpdateUserPasswordPasswdModifyExtension(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -2292,7 +2292,7 @@ func TestShouldUpdateUserPasswordPasswdModifyExtensionWithReferrals(t *testing.T
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -2419,7 +2419,7 @@ func TestShouldUpdateUserPasswordPasswdModifyExtensionWithoutReferrals(t *testin
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -2532,7 +2532,7 @@ func TestShouldUpdateUserPasswordPasswdModifyExtensionWithReferralsReferralConne
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -2650,7 +2650,7 @@ func TestShouldUpdateUserPasswordPasswdModifyExtensionWithReferralsReferralPassw
 	mockClientReferral := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -2781,7 +2781,7 @@ func TestShouldUpdateUserPasswordActiveDirectoryWithServerPolicyHints(t *testing
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -2892,7 +2892,7 @@ func TestShouldUpdateUserPasswordActiveDirectoryWithServerPolicyHintsDeprecated(
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -3003,7 +3003,7 @@ func TestShouldUpdateUserPasswordActiveDirectory(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "activedirectory",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
@@ -3114,7 +3114,7 @@ func TestShouldUpdateUserPasswordBasic(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			Implementation:       "custom",
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "uid=admin,dc=example,dc=com",
@@ -3222,7 +3222,7 @@ func TestShouldReturnErrorWhenMultipleUsernameAttributes(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3288,7 +3288,7 @@ func TestShouldReturnErrorWhenZeroUsernameAttributes(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3354,7 +3354,7 @@ func TestShouldReturnErrorWhenUsernameAttributeNotReturned(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3416,7 +3416,7 @@ func TestShouldReturnErrorWhenMultipleUsersFound(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3499,7 +3499,7 @@ func TestShouldReturnErrorWhenNoDN(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3565,7 +3565,7 @@ func TestShouldCheckValidUserPassword(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3633,7 +3633,7 @@ func TestShouldNotCheckValidUserPasswordWithConnectError(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3672,7 +3672,7 @@ func TestShouldCheckInvalidUserPassword(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3740,7 +3740,7 @@ func TestShouldCallStartTLSWhenEnabled(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3815,7 +3815,7 @@ func TestShouldParseDynamicConfiguration(t *testing.T) {
 	mockFactory := NewMockLDAPClientFactory(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3853,7 +3853,7 @@ func TestShouldCallStartTLSWithInsecureSkipVerifyWhenSkipVerifyTrue(t *testing.T
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldap://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",
@@ -3936,7 +3936,7 @@ func TestShouldReturnLDAPSAlreadySecuredWhenStartTLSAttempted(t *testing.T) {
 	mockClient := NewMockLDAPClient(ctrl)
 
 	ldapClient := newLDAPUserProvider(
-		schema.LDAPAuthenticationBackendConfiguration{
+		schema.LDAPAuthenticationBackend{
 			URL:                  "ldaps://127.0.0.1:389",
 			User:                 "cn=admin,dc=example,dc=com",
 			Password:             "password",

internal/authentication/password_hash.go

@@ -1,220 +0,0 @@
-package authentication
-
-import (
-	"crypto/subtle"
-	"errors"
-	"fmt"
-	"strconv"
-	"strings"
-
-	"github.com/simia-tech/crypt"
-
-	"github.com/authelia/authelia/v4/internal/utils"
-)
-
-// PasswordHash represents all characteristics of a password hash.
-// Authelia only supports salted SHA512 or salted argon2id method, i.e., $6$ mode or $argon2id$ mode.
-type PasswordHash struct {
-	Algorithm   CryptAlgo
-	Iterations  int
-	Salt        string
-	Key         string
-	KeyLength   int
-	Memory      int
-	Parallelism int
-}
-
-// ConfigAlgoToCryptoAlgo returns a CryptAlgo and nil error if valid, otherwise it returns argon2id and an error.
-func ConfigAlgoToCryptoAlgo(fromConfig string) (CryptAlgo, error) {
-	switch fromConfig {
-	case argon2id:
-		return HashingAlgorithmArgon2id, nil
-	case sha512:
-		return HashingAlgorithmSHA512, nil
-	default:
-		return HashingAlgorithmArgon2id, errors.New("Invalid algorithm in configuration. It should be `argon2id` or `sha512`")
-	}
-}
-
-// ParseHash extracts all characteristics of a hash given its string representation.
-func ParseHash(hash string) (passwordHash *PasswordHash, err error) {
-	parts := strings.Split(hash, "$")
-
-	// This error can be ignored as it's always nil.
-	c, parameters, salt, key, _ := crypt.DecodeSettings(hash)
-	code := CryptAlgo(c)
-	h := &PasswordHash{}
-
-	h.Salt = salt
-	h.Key = key
-
-	if h.Key != parts[len(parts)-1] {
-		return nil, fmt.Errorf("Hash key is not the last parameter, the hash is likely malformed (%s)", hash)
-	}
-
-	if h.Key == "" {
-		return nil, fmt.Errorf("Hash key contains no characters or the field length is invalid (%s)", hash)
-	}
-
-	switch code {
-	case HashingAlgorithmSHA512:
-		h.Iterations = parameters.GetInt("rounds", HashingDefaultSHA512Iterations)
-		h.Algorithm = HashingAlgorithmSHA512
-
-		if parameters["rounds"] != "" && parameters["rounds"] != strconv.Itoa(h.Iterations) {
-			return nil, fmt.Errorf("SHA512 iterations is not numeric (%s)", parameters["rounds"])
-		}
-	case HashingAlgorithmArgon2id:
-		_, err = crypt.Base64Encoding.DecodeString(h.Salt)
-		if err != nil {
-			return nil, errors.New("Salt contains invalid base64 characters")
-		}
-
-		version := parameters.GetInt("v", 0)
-		if version < 19 {
-			if version == 0 {
-				return nil, fmt.Errorf("Argon2id version parameter not found (%s)", hash)
-			}
-
-			return nil, fmt.Errorf("Argon2id versions less than v19 are not supported (hash is version %d)", version)
-		} else if version > 19 {
-			return nil, fmt.Errorf("Argon2id versions greater than v19 are not supported (hash is version %d)", version)
-		}
-
-		h.Algorithm = HashingAlgorithmArgon2id
-		h.Memory = parameters.GetInt("m", HashingDefaultArgon2idMemory)
-		h.Iterations = parameters.GetInt("t", HashingDefaultArgon2idTime)
-		h.Parallelism = parameters.GetInt("p", HashingDefaultArgon2idParallelism)
-		h.KeyLength = parameters.GetInt("k", HashingDefaultArgon2idKeyLength)
-
-		decodedKey, err := crypt.Base64Encoding.DecodeString(h.Key)
-
-		if err != nil {
-			return nil, errors.New("Hash key contains invalid base64 characters")
-		}
-
-		if len(decodedKey) != h.KeyLength {
-			return nil, fmt.Errorf("Argon2id key length parameter (%d) does not match the actual key length (%d)", h.KeyLength, len(decodedKey))
-		}
-	default:
-		return nil, fmt.Errorf("Authelia only supports salted SHA512 hashing ($6$) and salted argon2id ($argon2id$), not $%s$", code)
-	}
-
-	return h, nil
-}
-
-// HashPassword generate a salt and hash the password with the salt and a constant number of rounds.
-func HashPassword(password, salt string, algorithm CryptAlgo, iterations, memory, parallelism, keyLength, saltLength int) (hash string, err error) {
-	var settings string
-
-	if algorithm != HashingAlgorithmArgon2id && algorithm != HashingAlgorithmSHA512 {
-		return "", fmt.Errorf("Hashing algorithm input of '%s' is invalid, only values of %s and %s are supported", algorithm, HashingAlgorithmArgon2id, HashingAlgorithmSHA512)
-	}
-
-	if algorithm == HashingAlgorithmArgon2id {
-		err := validateArgon2idSettings(memory, parallelism, iterations, keyLength)
-		if err != nil {
-			return "", err
-		}
-	}
-
-	if algorithm != HashingAlgorithmSHA512 {
-		err = validateSalt(salt, saltLength)
-		if err != nil {
-			return "", err
-		}
-	}
-
-	if salt == "" {
-		salt = crypt.Base64Encoding.EncodeToString(utils.RandomBytes(saltLength, HashingPossibleSaltCharacters, true))
-	}
-
-	settings = getCryptSettings(salt, algorithm, iterations, memory, parallelism, keyLength)
-
-	// This error can be ignored because we check for it before a user gets here.
-	hash, _ = crypt.Crypt(password, settings)
-
-	return hash, nil
-}
-
-// CheckPassword check a password against a hash.
-func CheckPassword(password, hash string) (ok bool, err error) {
-	expectedHash, err := ParseHash(hash)
-	if err != nil {
-		return false, err
-	}
-
-	passwordHashString, err := HashPassword(password, expectedHash.Salt, expectedHash.Algorithm, expectedHash.Iterations, expectedHash.Memory, expectedHash.Parallelism, expectedHash.KeyLength, len(expectedHash.Salt))
-	if err != nil {
-		return false, err
-	}
-
-	passwordHash, err := ParseHash(passwordHashString)
-	if err != nil {
-		return false, err
-	}
-
-	return subtle.ConstantTimeCompare([]byte(passwordHash.Key), []byte(expectedHash.Key)) == 1, nil
-}
-
-func getCryptSettings(salt string, algorithm CryptAlgo, iterations, memory, parallelism, keyLength int) (settings string) {
-	switch algorithm {
-	case HashingAlgorithmArgon2id:
-		settings, _ = crypt.Argon2idSettings(memory, iterations, parallelism, keyLength, salt)
-	case HashingAlgorithmSHA512:
-		settings = fmt.Sprintf("$6$rounds=%d$%s", iterations, salt)
-	default:
-		panic("invalid password hashing algorithm provided")
-	}
-
-	return settings
-}
-
-// validateSalt checks the salt input and settings are valid and returns it and a nil error if they are, otherwise returns an error.
-func validateSalt(salt string, saltLength int) error {
-	if salt == "" {
-		if saltLength < 8 {
-			return fmt.Errorf("Salt length input of %d is invalid, it must be 8 or higher", saltLength)
-		}
-
-		return nil
-	}
-
-	decodedSalt, err := crypt.Base64Encoding.DecodeString(salt)
-	if err != nil {
-		return fmt.Errorf("Salt input of %s is invalid, only base64 strings are valid for input", salt)
-	}
-
-	if len(decodedSalt) < 8 {
-		return fmt.Errorf("Salt input of %s is invalid (%d characters), it must be 8 or more characters", decodedSalt, len(decodedSalt))
-	}
-
-	return nil
-}
-
-// validateArgon2idSettings checks the argon2id settings are valid.
-func validateArgon2idSettings(memory, parallelism, iterations, keyLength int) error {
-	// Caution: Increasing any of the values in the below block has a high chance in old passwords that cannot be verified.
-	if memory < 8 {
-		return fmt.Errorf("Memory (argon2id) input of %d is invalid, it must be 8 or higher", memory)
-	}
-
-	if parallelism < 1 {
-		return fmt.Errorf("Parallelism (argon2id) input of %d is invalid, it must be 1 or higher", parallelism)
-	}
-
-	if memory < parallelism*8 {
-		return fmt.Errorf("Memory (argon2id) input of %d is invalid with a parallelism input of %d, it must be %d (parallelism * 8) or higher", memory, parallelism, parallelism*8)
-	}
-
-	if keyLength < 16 {
-		return fmt.Errorf("Key length (argon2id) input of %d is invalid, it must be 16 or higher", keyLength)
-	}
-
-	if iterations < 1 {
-		return fmt.Errorf("Iterations (argon2id) input of %d is invalid, it must be 1 or more", iterations)
-	}
-
-	// Caution: Increasing any of the values in the above block has a high chance in old passwords that cannot be verified.
-	return nil
-}

internal/authentication/password_hash_test.go

@@ -1,322 +0,0 @@
-package authentication
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/simia-tech/crypt"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-
-	"github.com/authelia/authelia/v4/internal/configuration/schema"
-	"github.com/authelia/authelia/v4/internal/utils"
-)
-
-func TestShouldHashSHA512Password(t *testing.T) {
-	hash, err := HashPassword("password", "aFr56HjK3DrB8t3S", HashingAlgorithmSHA512, 50000, 0, 0, 0, 16)
-
-	assert.NoError(t, err)
-
-	code, parameters, salt, hash, _ := crypt.DecodeSettings(hash)
-
-	assert.Equal(t, "6", code)
-	assert.Equal(t, "aFr56HjK3DrB8t3S", salt)
-	assert.Equal(t, "zhPQiS85cgBlNhUKKE6n/AHMlpqrvYSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1", hash)
-	assert.Equal(t, schema.DefaultPasswordSHA512Configuration.Iterations, parameters.GetInt("rounds", HashingDefaultSHA512Iterations))
-}
-
-func TestShouldHashArgon2idPassword(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, schema.DefaultCIPasswordConfiguration.KeyLength,
-		schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.NoError(t, err)
-
-	code, parameters, salt, key, err := crypt.DecodeSettings(hash)
-
-	assert.NoError(t, err)
-	assert.Equal(t, argon2id, code)
-	assert.Equal(t, "BpLnfgDsc2WD8F2q", salt)
-	assert.Equal(t, "kYempka60N8ETZ+EedP+Fn3z83mEPMl08RQEXTwY6u0", key)
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Iterations, parameters.GetInt("t", HashingDefaultArgon2idTime))
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Memory*1024, parameters.GetInt("m", HashingDefaultArgon2idMemory))
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Parallelism, parameters.GetInt("p", HashingDefaultArgon2idParallelism))
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.KeyLength, parameters.GetInt("k", HashingDefaultArgon2idKeyLength))
-}
-
-func TestShouldValidateArgon2idHashWithTEqualOne(t *testing.T) {
-	hash := "$argon2id$v=19$m=1024,t=1,p=1,k=16$c2FsdG9uY2U$Sk4UjzxXdCrBcyyMYiPEsQ"
-	valid, err := CheckPassword("apple", hash)
-	assert.True(t, valid)
-	assert.NoError(t, err)
-}
-
-// This checks the method of hashing (for argon2id) supports all the characters we allow in Authelia's hash function.
-func TestArgon2idHashSaltValidValues(t *testing.T) {
-	var err error
-
-	var hash string
-
-	datas := utils.SliceString(HashingPossibleSaltCharacters, 16)
-
-	for _, salt := range datas {
-		hash, err = HashPassword("password", salt, HashingAlgorithmArgon2id, 1, 8, 1, 32, 16)
-		assert.NoError(t, err)
-		assert.Equal(t, fmt.Sprintf("$argon2id$v=19$m=8,t=1,p=1$%s$", salt), hash[0:44])
-	}
-}
-
-// This checks the method of hashing (for sha512) supports all the characters we allow in Authelia's hash function.
-func TestSHA512HashSaltValidValues(t *testing.T) {
-	var err error
-
-	var hash string
-
-	datas := utils.SliceString(HashingPossibleSaltCharacters, 16)
-
-	for _, salt := range datas {
-		hash, err = HashPassword("password", salt, HashingAlgorithmSHA512, 1000, 0, 0, 0, 16)
-		assert.NoError(t, err)
-		assert.Equal(t, fmt.Sprintf("$6$rounds=1000$%s$", salt), hash[0:32])
-	}
-}
-
-func TestShouldNotHashPasswordWithNonExistentAlgorithm(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", "bogus",
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, schema.DefaultCIPasswordConfiguration.KeyLength,
-		schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Hashing algorithm input of 'bogus' is invalid, only values of argon2id and 6 are supported")
-}
-
-func TestShouldNotHashArgon2idPasswordDueToMemoryParallelismMismatch(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, 8, 2,
-		schema.DefaultCIPasswordConfiguration.KeyLength, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Memory (argon2id) input of 8 is invalid with a parallelism input of 2, it must be 16 (parallelism * 8) or higher")
-}
-
-func TestShouldNotHashArgon2idPasswordDueToMemoryLessThanEight(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, 1, schema.DefaultCIPasswordConfiguration.Parallelism,
-		schema.DefaultCIPasswordConfiguration.KeyLength, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Memory (argon2id) input of 1 is invalid, it must be 8 or higher")
-}
-
-func TestShouldNotHashArgon2idPasswordDueToKeyLengthLessThanSixteen(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, 5, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Key length (argon2id) input of 5 is invalid, it must be 16 or higher")
-}
-
-func TestShouldNotHashArgon2idPasswordDueParallelismLessThanOne(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024, -1,
-		schema.DefaultCIPasswordConfiguration.KeyLength, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Parallelism (argon2id) input of -1 is invalid, it must be 1 or higher")
-}
-
-func TestShouldNotHashArgon2idPasswordDueIterationsLessThanOne(t *testing.T) {
-	hash, err := HashPassword("password", "BpLnfgDsc2WD8F2q", HashingAlgorithmArgon2id,
-		0, schema.DefaultCIPasswordConfiguration.Memory*1024, schema.DefaultCIPasswordConfiguration.Parallelism,
-		schema.DefaultCIPasswordConfiguration.KeyLength, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Iterations (argon2id) input of 0 is invalid, it must be 1 or more")
-}
-
-func TestShouldNotHashPasswordDueToSaltLength(t *testing.T) {
-	hash, err := HashPassword("password", "", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, schema.DefaultCIPasswordConfiguration.KeyLength, 0)
-
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Salt length input of 0 is invalid, it must be 8 or higher")
-}
-
-func TestShouldNotHashPasswordDueToSaltCharLengthTooShort(t *testing.T) {
-	// The salt 'YQ' is the base64 value for 'a' which is why the length is 1.
-	hash, err := HashPassword("password", "YQ", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, schema.DefaultCIPasswordConfiguration.KeyLength,
-		schema.DefaultCIPasswordConfiguration.SaltLength)
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Salt input of a is invalid (1 characters), it must be 8 or more characters")
-}
-
-func TestShouldNotHashPasswordWithNonBase64CharsInSalt(t *testing.T) {
-	hash, err := HashPassword("password", "abc&123", HashingAlgorithmArgon2id,
-		schema.DefaultCIPasswordConfiguration.Iterations, schema.DefaultCIPasswordConfiguration.Memory*1024,
-		schema.DefaultCIPasswordConfiguration.Parallelism, schema.DefaultCIPasswordConfiguration.KeyLength,
-		schema.DefaultCIPasswordConfiguration.SaltLength)
-	assert.Equal(t, "", hash)
-	assert.EqualError(t, err, "Salt input of abc&123 is invalid, only base64 strings are valid for input")
-}
-
-func TestShouldNotParseHashWithNoneBase64CharsInKey(t *testing.T) {
-	passwordHash, err := ParseHash("$argon2id$v=19$m=65536,t=3,p=2$BpLnfgDsc2WD8F2q$^^vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-	assert.EqualError(t, err, "Hash key contains invalid base64 characters")
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldNotParseHashWithNoneBase64CharsInSalt(t *testing.T) {
-	passwordHash, err := ParseHash("$argon2id$v=19$m=65536$^^wTFoFjITudo57a$Z4NH/EKkdv6PJ01Ye1twJ61fsmRJujZZn1IXdUOyrJY")
-	assert.EqualError(t, err, "Salt contains invalid base64 characters")
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldNotParseWithMalformedHash(t *testing.T) {
-	hashExtraField := "$argon2id$v=19$m=65536,t=3,p=2$abc$BpLnfgDsc2WD8F2q$^^vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM"
-	hashMissingSaltAndParams := "$argon2id$v=1$2t9X8nNCN2n3/kFYJ3xWNBg5k/rO782Qr7JJoJIK7G4"
-	hashMissingSalt := "$argon2id$v=1$m=65536,t=3,p=2$2t9X8nNCN2n3/kFYJ3xWNBg5k/rO782Qr7JJoJIK7G4"
-
-	passwordHash, err := ParseHash(hashExtraField)
-	assert.EqualError(t, err, fmt.Sprintf("Hash key is not the last parameter, the hash is likely malformed (%s)", hashExtraField))
-	assert.Nil(t, passwordHash)
-
-	passwordHash, err = ParseHash(hashMissingSaltAndParams)
-	assert.EqualError(t, err, fmt.Sprintf("Hash key is not the last parameter, the hash is likely malformed (%s)", hashMissingSaltAndParams))
-	assert.Nil(t, passwordHash)
-
-	passwordHash, err = ParseHash(hashMissingSalt)
-	assert.EqualError(t, err, fmt.Sprintf("Hash key is not the last parameter, the hash is likely malformed (%s)", hashMissingSalt))
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldNotParseHashWithEmptyKey(t *testing.T) {
-	hash := "$argon2id$v=19$m=65536$fvwTFoFjITudo57a$"
-	passwordHash, err := ParseHash(hash)
-	assert.EqualError(t, err, fmt.Sprintf("Hash key contains no characters or the field length is invalid (%s)", hash))
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldNotParseArgon2idHashWithEmptyVersion(t *testing.T) {
-	hash := "$argon2id$m=65536$fvwTFoFjITudo57a$Z4NH/EKkdv6PJ01Ye1twJ61fsmRJujZZn1IXdUOyrJY"
-	passwordHash, err := ParseHash(hash)
-	assert.EqualError(t, err, fmt.Sprintf("Argon2id version parameter not found (%s)", hash))
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldNotParseArgon2idHashWithWrongKeyLength(t *testing.T) {
-	hash := "$argon2id$v=19$m=65536,k=50$fvwTFoFjITudo57a$Z4NH/EKkdv6PJ01Ye1twJ61fsmRJujZZn1IXdUOyrJY"
-	passwordHash, err := ParseHash(hash)
-	assert.EqualError(t, err, "Argon2id key length parameter (50) does not match the actual key length (32)")
-	assert.Nil(t, passwordHash)
-}
-
-func TestShouldParseArgon2idHash(t *testing.T) {
-	passwordHash, err := ParseHash("$argon2id$v=19$m=65536,t=3,p=4$NEwwcVNuQWlQMFpkMndxdg$LlHjiLxPB94pdmOiNwr7Bgy+uy3huSv6y9phCQ+mLls")
-	assert.NoError(t, err)
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Iterations, passwordHash.Iterations)
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Parallelism, passwordHash.Parallelism)
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.KeyLength, passwordHash.KeyLength)
-	assert.Equal(t, schema.DefaultCIPasswordConfiguration.Memory*1024, passwordHash.Memory)
-}
-
-func TestShouldCheckSHA512Password(t *testing.T) {
-	ok, err := CheckPassword("password", "$6$rounds=50000$aFr56HjK3DrB8t3S$zhPQiS85cgBlNhUKKE6n/AHMlpqrvYSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1")
-	assert.NoError(t, err)
-	assert.True(t, ok)
-}
-
-func TestShouldCheckArgon2idPassword(t *testing.T) {
-	ok, err := CheckPassword("password", "$argon2id$v=19$m=65536,t=3,p=2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-	assert.NoError(t, err)
-	assert.True(t, ok)
-}
-
-func TestCannotParseSHA512Hash(t *testing.T) {
-	ok, err := CheckPassword("password", "$6$roSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1")
-
-	assert.EqualError(t, err, "Hash key is not the last parameter, the hash is likely malformed ($6$roSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1)")
-	assert.False(t, ok)
-}
-
-func TestCannotParseArgon2idHash(t *testing.T) {
-	ok, err := CheckPassword("password", "$argon2id$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-
-	assert.EqualError(t, err, "Hash key is not the last parameter, the hash is likely malformed ($argon2id$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM)")
-	assert.False(t, ok)
-}
-
-func TestOnlySupportSHA512AndArgon2id(t *testing.T) {
-	ok, err := CheckPassword("password", "$8$rounds=50000$aFr56HjK3DrB8t3S$zhPQiS85cgBlNhUKKE6n/AHMlpqrvYSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1")
-
-	assert.EqualError(t, err, "Authelia only supports salted SHA512 hashing ($6$) and salted argon2id ($argon2id$), not $8$")
-	assert.False(t, ok)
-}
-
-func TestCannotFindNumberOfRounds(t *testing.T) {
-	hash := "$6$rounds50000$aFr56HjK3DrB8t3S$zhPQiS85cgBlNhUKKE6n/AHMlpqrvYSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1"
-	ok, err := CheckPassword("password", hash)
-
-	assert.EqualError(t, err, fmt.Sprintf("Hash key is not the last parameter, the hash is likely malformed (%s)", hash))
-	assert.False(t, ok)
-}
-
-func TestCannotMatchArgon2idParamPattern(t *testing.T) {
-	ok, err := CheckPassword("password", "$argon2id$v=19$m65536,t3,p2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-
-	assert.EqualError(t, err, "Hash key is not the last parameter, the hash is likely malformed ($argon2id$v=19$m65536,t3,p2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM)")
-	assert.False(t, ok)
-}
-
-func TestArgon2idVersionLessThanSupported(t *testing.T) {
-	ok, err := CheckPassword("password", "$argon2id$v=18$m=65536,t=3,p=2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-
-	assert.EqualError(t, err, "Argon2id versions less than v19 are not supported (hash is version 18)")
-	assert.False(t, ok)
-}
-
-func TestArgon2idVersionGreaterThanSupported(t *testing.T) {
-	ok, err := CheckPassword("password", "$argon2id$v=20$m=65536,t=3,p=2$BpLnfgDsc2WD8F2q$o/vzA4myCqZZ36bUGsDY//8mKUYNZZaR0t4MFFSs+iM")
-
-	assert.EqualError(t, err, "Argon2id versions greater than v19 are not supported (hash is version 20)")
-	assert.False(t, ok)
-}
-
-func TestNumberOfRoundsNotInt(t *testing.T) {
-	ok, err := CheckPassword("password", "$6$rounds=abc$aFr56HjK3DrB8t3S$zhPQiS85cgBlNhUKKE6n/AHMlpqrvYSnSL3fEVkK0yHFQ.oFFAd8D4OhPAy18K5U61Z2eBhxQXExGU/eknXlY1")
-
-	assert.EqualError(t, err, "SHA512 iterations is not numeric (abc)")
-	assert.False(t, ok)
-}
-
-func TestShouldCheckPasswordArgon2idHashedWithAuthelia(t *testing.T) {
-	password := testPassword
-	hash, err := HashPassword(password, "", HashingAlgorithmArgon2id, schema.DefaultCIPasswordConfiguration.Iterations,
-		schema.DefaultCIPasswordConfiguration.Memory*1024, schema.DefaultCIPasswordConfiguration.Parallelism,
-		schema.DefaultCIPasswordConfiguration.KeyLength, schema.DefaultCIPasswordConfiguration.SaltLength)
-
-	assert.NoError(t, err)
-
-	equal, err := CheckPassword(password, hash)
-
-	require.NoError(t, err)
-	assert.True(t, equal)
-}
-
-func TestShouldCheckPasswordSHA512HashedWithAuthelia(t *testing.T) {
-	password := testPassword
-	hash, err := HashPassword(password, "", HashingAlgorithmSHA512, schema.DefaultPasswordSHA512Configuration.Iterations,
-		0, 0, 0, schema.DefaultPasswordSHA512Configuration.SaltLength)
-
-	assert.NoError(t, err)
-
-	equal, err := CheckPassword(password, hash)
-
-	require.NoError(t, err)
-	assert.True(t, equal)
-}

internal/commands/acl.go

@@ -56,7 +56,7 @@ func newAccessControlCheckCommand() (cmd *cobra.Command) {
 }
 
 func accessControlCheckRunE(cmd *cobra.Command, _ []string) (err error) {
-	configs, err := cmd.Flags().GetStringSlice("config")
+	configs, err := cmd.Flags().GetStringSlice(cmdFlagNameConfig)
 	if err != nil {
 		return err
 	}

internal/commands/configuration.go

@@ -15,9 +15,9 @@ import (
 // cmdWithConfigFlags is used for commands which require access to the configuration to add the flag to the command.
 func cmdWithConfigFlags(cmd *cobra.Command, persistent bool, configs []string) {
 	if persistent {
-		cmd.PersistentFlags().StringSliceP("config", "c", configs, "configuration files to load")
+		cmd.PersistentFlags().StringSliceP(cmdFlagNameConfig, "c", configs, "configuration files to load")
 	} else {
-		cmd.Flags().StringSliceP("config", "c", configs, "configuration files to load")
+		cmd.Flags().StringSliceP(cmdFlagNameConfig, "c", configs, "configuration files to load")
 	}
 }
 
@@ -33,7 +33,7 @@ func newCmdWithConfigPreRun(ensureConfigExists, validateKeys, validateConfigurat
 
 		logger = logging.Logger()
 
-		if configs, err = cmd.Flags().GetStringSlice("config"); err != nil {
+		if configs, err = cmd.Flags().GetStringSlice(cmdFlagNameConfig); err != nil {
 			logger.Fatalf("Error reading flags: %v", err)
 		}
 

internal/commands/const.go

@@ -310,6 +310,57 @@ This subcommand allows preforming cryptographic certificate, key pair, etc tasks
 
 	cmdAutheliaCryptoExample = `authelia crypto --help`
 
+	cmdAutheliaCryptoRandShort = "Generate a cryptographically secure random string"
+
+	cmdAutheliaCryptoRandLong = `Generate a cryptographically secure random string.
+
+This subcommand allows generating cryptographically secure random strings for use for encryption keys, HMAC keys, etc.`
+
+	cmdAutheliaCryptoRandExample = `authelia crypto rand --help
+authelia crypto rand --length 80
+authelia crypto rand -n 80
+authelia crypto rand --charset alphanumeric
+authelia crypto rand --charset alphabetic
+authelia crypto rand --charset ascii
+authelia crypto rand --charset numeric
+authelia crypto rand --charset numeric-hex
+authelia crypto rand --characters 0123456789ABCDEF`
+
+	cmdAutheliaCryptoHashShort = "Perform cryptographic hash operations"
+
+	cmdAutheliaCryptoHashLong = `Perform cryptographic hash operations.
+
+This subcommand allows preforming hashing cryptographic tasks.`
+
+	cmdAutheliaCryptoHashExample = `authelia crypto hash --help`
+
+	cmdAutheliaCryptoHashValidateShort = "Perform cryptographic hash validations"
+
+	cmdAutheliaCryptoHashValidateLong = `Perform cryptographic hash validations.
+
+This subcommand allows preforming cryptographic hash validations. i.e. checking hash digests against a password.`
+
+	cmdAutheliaCryptoHashValidateExample = `authelia crypto hash validate --help
+authelia crypto hash validate '$5$rounds=500000$WFjMpdCQxIkbNl0k$M0qZaZoK8Gwdh8Cw5diHgGfe5pE0iJvxcVG3.CVnQe.' -- 'p@ssw0rd'`
+
+	cmdAutheliaCryptoHashGenerateShort = "Generate cryptographic hash digests"
+
+	cmdAutheliaCryptoHashGenerateLong = `Generate cryptographic hash digests.
+
+This subcommand allows generating cryptographic hash digests.
+
+See the help for the subcommands if you want to override the configuration or defaults.`
+
+	cmdAutheliaCryptoHashGenerateExample = `authelia crypto hash generate --help`
+
+	fmtCmdAutheliaCryptoHashGenerateSubShort = "Generate cryptographic %s hash digests"
+
+	fmtCmdAutheliaCryptoHashGenerateSubLong = `Generate cryptographic %s hash digests.
+
+This subcommand allows generating cryptographic %s hash digests.`
+
+	fmtCmdAutheliaCryptoHashGenerateSubExample = `authelia crypto hash generate %s --help`
+
 	cmdAutheliaCryptoCertificateShort = "Perform certificate cryptographic operations"
 
 	cmdAutheliaCryptoCertificateLong = `Perform certificate cryptographic operations.
@@ -324,11 +375,7 @@ This subcommand allows preforming certificate cryptographic tasks.`
 
 This subcommand allows preforming %s certificate cryptographic tasks.`
 
-	cmdAutheliaCryptoCertificateRSAExample = `authelia crypto certificate rsa --help`
-
-	cmdAutheliaCryptoCertificateECDSAExample = `authelia crypto certificate ecdsa --help`
-
-	cmdAutheliaCryptoCertificateEd25519Example = `authelia crypto certificate ed25519 --help`
+	fmtCmdAutheliaCryptoCertificateSubExample = `authelia crypto certificate %s --help`
 
 	fmtCmdAutheliaCryptoCertificateGenerateRequestShort = "Generate an %s private key and %s"
 
@@ -444,11 +491,43 @@ const (
 	cmdFlagNamePKCS8 = "pkcs8"
 	cmdFlagNameBits  = "bits"
 	cmdFlagNameCurve = "curve"
+
+	cmdFlagNamePassword     = "password"
+	cmdFlagNameRandom       = "random"
+	cmdFlagNameRandomLength = "random.length"
+	cmdFlagNameNoConfirm    = "no-confirm"
+	cmdFlagNameVariant      = "variant"
+	cmdFlagNameCost         = "cost"
+	cmdFlagNameIterations   = "iterations"
+	cmdFlagNameParallelism  = "parallelism"
+	cmdFlagNameBlockSize    = "block-size"
+	cmdFlagNameMemory       = "memory"
+	cmdFlagNameKeySize      = "key-size"
+	cmdFlagNameSaltSize     = "salt-size"
+	cmdFlagNameProfile      = "profile"
+	cmdFlagNameSHA512       = "sha512"
+	cmdFlagNameConfig       = "config"
+
+	cmdFlagNameCharSet    = "charset"
+	cmdFlagNameCharacters = "characters"
+	cmdFlagNameLength     = "length"
 )
 
 const (
+	cmdUseHashPassword  = "hash-password [flags] -- [password]"
+	cmdUseHash          = "hash"
+	cmdUseHashArgon2    = "argon2"
+	cmdUseHashSHA2Crypt = "sha2crypt"
+	cmdUseHashPBKDF2    = "pbkdf2"
+	cmdUseHashBCrypt    = "bcrypt"
+	cmdUseHashSCrypt    = "scrypt"
+
+	cmdUseCrypto      = "crypto"
+	cmdUseRand        = "rand"
 	cmdUseCertificate = "certificate"
 	cmdUseGenerate    = "generate"
+	cmdUseValidate    = "validate"
+	cmdUseFmtValidate = "%s [flags] -- <digest>"
 	cmdUseRequest     = "request"
 	cmdUsePair        = "pair"
 	cmdUseRSA         = "rsa"
@@ -459,6 +538,8 @@ const (
 const (
 	cryptoCertPubCertOut = "certificate"
 	cryptoCertCSROut     = "certificate signing request"
+
+	prefixFilePassword = "authentication_backend.file.password"
 )
 
 var (

internal/commands/crypto.go

@@ -17,7 +17,7 @@ import (
 
 func newCryptoCmd() (cmd *cobra.Command) {
 	cmd = &cobra.Command{
-		Use:     "crypto",
+		Use:     cmdUseCrypto,
 		Short:   cmdAutheliaCryptoShort,
 		Long:    cmdAutheliaCryptoLong,
 		Example: cmdAutheliaCryptoExample,
@@ -27,13 +27,84 @@ func newCryptoCmd() (cmd *cobra.Command) {
 	}
 
 	cmd.AddCommand(
+		newCryptoRandCmd(),
 		newCryptoCertificateCmd(),
+		newCryptoHashCmd(),
 		newCryptoPairCmd(),
 	)
 
 	return cmd
 }
 
+func newCryptoRandCmd() (cmd *cobra.Command) {
+	cmd = &cobra.Command{
+		Use:     cmdUseRand,
+		Short:   cmdAutheliaCryptoRandShort,
+		Long:    cmdAutheliaCryptoRandLong,
+		Example: cmdAutheliaCryptoRandExample,
+		Args:    cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) (err error) {
+			useCharSet, useCharacters := cmd.Flags().Changed(cmdFlagNameCharSet), cmd.Flags().Changed(cmdFlagNameCharacters)
+			if useCharSet && useCharacters {
+				return fmt.Errorf("flags '--%s' and '--%s' are mutually exclusive, only one may be specified", cmdFlagNameCharSet, cmdFlagNameCharacters)
+			}
+
+			var (
+				charset string
+				n       int
+			)
+
+			if n, err = cmd.Flags().GetInt(cmdFlagNameLength); err != nil {
+				return err
+			}
+
+			if n < 1 {
+				return fmt.Errorf("length must be at least 1")
+			}
+
+			switch {
+			case useCharSet, !useCharSet && !useCharacters:
+				var c string
+
+				if c, err = cmd.Flags().GetString(cmdFlagNameCharSet); err != nil {
+					return err
+				}
+
+				switch c {
+				case "ascii":
+					charset = utils.CharSetASCII
+				case "alphanumeric":
+					charset = utils.CharSetAlphaNumeric
+				case "alphabetic":
+					charset = utils.CharSetAlphabetic
+				case "numeric-hex":
+					charset = utils.CharSetNumericHex
+				case "numeric":
+					charset = utils.CharSetNumeric
+				default:
+					return fmt.Errorf("invalid charset '%s', must be one of 'ascii', 'alphanumeric', 'alphabetic', 'numeric', or 'numeric-hex'", c)
+				}
+			case useCharacters:
+				if charset, err = cmd.Flags().GetString(cmdFlagNameCharacters); err != nil {
+					return err
+				}
+			}
+
+			fmt.Printf("Random Value: %s\n", utils.RandomString(n, charset, true))
+
+			return nil
+		},
+
+		DisableAutoGenTag: true,
+	}
+
+	cmd.Flags().StringP(cmdFlagNameCharSet, "c", "alphanumeric", "Sets the charset for the output, options are 'ascii', 'alphanumeric', 'alphabetic', 'numeric', and 'numeric-hex'")
+	cmd.Flags().String(cmdFlagNameCharacters, "", "Sets the explicit characters for the random output")
+	cmd.Flags().IntP(cmdFlagNameLength, "n", 80, "Sets the length of the random output")
+
+	return cmd
+}
+
 func newCryptoCertificateCmd() (cmd *cobra.Command) {
 	cmd = &cobra.Command{
 		Use:     cmdUseCertificate,
@@ -55,26 +126,13 @@ func newCryptoCertificateCmd() (cmd *cobra.Command) {
 }
 
 func newCryptoCertificateSubCmd(use string) (cmd *cobra.Command) {
-	var (
-		example, useFmt string
-	)
-
-	useFmt = fmtCryptoUse(use)
-
-	switch use {
-	case cmdUseRSA:
-		example = cmdAutheliaCryptoCertificateRSAExample
-	case cmdUseECDSA:
-		example = cmdAutheliaCryptoCertificateECDSAExample
-	case cmdUseEd25519:
-		example = cmdAutheliaCryptoCertificateEd25519Example
-	}
+	useFmt := fmtCryptoCertificateUse(use)
 
 	cmd = &cobra.Command{
 		Use:     use,
 		Short:   fmt.Sprintf(fmtCmdAutheliaCryptoCertificateSubShort, useFmt),
 		Long:    fmt.Sprintf(fmtCmdAutheliaCryptoCertificateSubLong, useFmt, useFmt),
-		Example: example,
+		Example: fmt.Sprintf(fmtCmdAutheliaCryptoCertificateSubExample, use),
 		Args:    cobra.NoArgs,
 
 		DisableAutoGenTag: true,
@@ -98,7 +156,7 @@ func newCryptoCertificateRequestCmd(algorithm string) (cmd *cobra.Command) {
 	cmdFlagsCryptoCertificateCommon(cmd)
 	cmdFlagsCryptoCertificateRequest(cmd)
 
-	algorithmFmt := fmtCryptoUse(algorithm)
+	algorithmFmt := fmtCryptoCertificateUse(algorithm)
 
 	cmd.Short = fmt.Sprintf(fmtCmdAutheliaCryptoCertificateGenerateRequestShort, algorithmFmt, cryptoCertCSROut)
 	cmd.Long = fmt.Sprintf(fmtCmdAutheliaCryptoCertificateGenerateRequestLong, algorithmFmt, cryptoCertCSROut, algorithmFmt, cryptoCertCSROut)
@@ -146,7 +204,7 @@ func newCryptoPairSubCmd(use string) (cmd *cobra.Command) {
 		example, useFmt string
 	)
 
-	useFmt = fmtCryptoUse(use)
+	useFmt = fmtCryptoCertificateUse(use)
 
 	switch use {
 	case cmdUseRSA:
@@ -184,7 +242,7 @@ func newCryptoGenerateCmd(category, algorithm string) (cmd *cobra.Command) {
 
 	cmdFlagsCryptoPrivateKey(cmd)
 
-	algorithmFmt := fmtCryptoUse(algorithm)
+	algorithmFmt := fmtCryptoCertificateUse(algorithm)
 
 	switch category {
 	case cmdUseCertificate:

internal/commands/crypto_hash.go

@@ -0,0 +1,527 @@
+package commands
+
+import (
+	"fmt"
+	"strings"
+	"syscall"
+
+	"github.com/go-crypt/crypt"
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"golang.org/x/term"
+
+	"github.com/authelia/authelia/v4/internal/authentication"
+	"github.com/authelia/authelia/v4/internal/configuration"
+	"github.com/authelia/authelia/v4/internal/configuration/schema"
+	"github.com/authelia/authelia/v4/internal/configuration/validator"
+	"github.com/authelia/authelia/v4/internal/utils"
+)
+
+func newHashPasswordCmd() (cmd *cobra.Command) {
+	cmd = &cobra.Command{
+		Use:     cmdUseHashPassword,
+		Short:   cmdAutheliaHashPasswordShort,
+		Long:    cmdAutheliaHashPasswordLong,
+		Example: cmdAutheliaHashPasswordExample,
+		Args:    cobra.MaximumNArgs(1),
+		RunE:    cmdHashPasswordRunE,
+
+		DisableAutoGenTag: true,
+	}
+
+	cmdFlagConfig(cmd)
+
+	cmd.Flags().BoolP(cmdFlagNameSHA512, "z", false, fmt.Sprintf("use sha512 as the algorithm (changes iterations to %d, change with -i)", schema.DefaultPasswordConfig.SHA2Crypt.Iterations))
+	cmd.Flags().IntP(cmdFlagNameIterations, "i", schema.DefaultPasswordConfig.Argon2.Iterations, "set the number of hashing iterations")
+	cmd.Flags().IntP(cmdFlagNameMemory, "m", schema.DefaultPasswordConfig.Argon2.Memory, "[argon2id] set the amount of memory param (in MB)")
+	cmd.Flags().IntP(cmdFlagNameParallelism, "p", schema.DefaultPasswordConfig.Argon2.Parallelism, "[argon2id] set the parallelism param")
+	cmd.Flags().IntP("key-length", "k", schema.DefaultPasswordConfig.Argon2.KeyLength, "[argon2id] set the key length param")
+	cmd.Flags().IntP("salt-length", "l", schema.DefaultPasswordConfig.Argon2.SaltLength, "set the auto-generated salt length")
+	cmd.Flags().Bool(cmdFlagNameNoConfirm, false, "skip the password confirmation prompt")
+
+	return cmd
+}
+
+func cmdHashPasswordRunE(cmd *cobra.Command, args []string) (err error) {
+	var (
+		flagsMap map[string]string
+		sha512   bool
+	)
+
+	if sha512, err = cmd.Flags().GetBool(cmdFlagNameSHA512); err != nil {
+		return err
+	}
+
+	switch {
+	case sha512:
+		flagsMap = map[string]string{
+			cmdFlagNameIterations: prefixFilePassword + ".sha2crypt.iterations",
+			"salt-length":         prefixFilePassword + ".sha2crypt.salt_length",
+		}
+	default:
+		flagsMap = map[string]string{
+			cmdFlagNameIterations:  prefixFilePassword + ".argon2.iterations",
+			"key-length":           prefixFilePassword + ".argon2.key_length",
+			"salt-length":          prefixFilePassword + ".argon2.salt_length",
+			cmdFlagNameParallelism: prefixFilePassword + ".argon2.parallelism",
+			cmdFlagNameMemory:      prefixFilePassword + ".argon2.memory",
+		}
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func newCryptoHashCmd() (cmd *cobra.Command) {
+	cmd = &cobra.Command{
+		Use:     cmdUseHash,
+		Short:   cmdAutheliaCryptoHashShort,
+		Long:    cmdAutheliaCryptoHashLong,
+		Example: cmdAutheliaCryptoHashExample,
+		Args:    cobra.NoArgs,
+
+		DisableAutoGenTag: true,
+	}
+
+	cmd.AddCommand(
+		newCryptoHashValidateCmd(),
+		newCryptoHashGenerateCmd(),
+	)
+
+	return cmd
+}
+
+func newCryptoHashGenerateCmd() (cmd *cobra.Command) {
+	cmd = &cobra.Command{
+		Use:     cmdUseGenerate,
+		Short:   cmdAutheliaCryptoHashGenerateShort,
+		Long:    cmdAutheliaCryptoHashGenerateLong,
+		Example: cmdAutheliaCryptoHashGenerateExample,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return cmdCryptoHashGenerateFinish(cmd, args, map[string]string{})
+		},
+
+		DisableAutoGenTag: true,
+	}
+
+	cmdFlagConfig(cmd)
+	cmdFlagPassword(cmd, true)
+
+	for _, use := range []string{cmdUseHashArgon2, cmdUseHashSHA2Crypt, cmdUseHashPBKDF2, cmdUseHashBCrypt, cmdUseHashSCrypt} {
+		cmd.AddCommand(newCryptoHashGenerateSubCmd(use))
+	}
+
+	return cmd
+}
+
+func newCryptoHashGenerateSubCmd(use string) (cmd *cobra.Command) {
+	useFmt := fmtCryptoHashUse(use)
+
+	cmd = &cobra.Command{
+		Use:     use,
+		Short:   fmt.Sprintf(fmtCmdAutheliaCryptoHashGenerateSubShort, useFmt),
+		Long:    fmt.Sprintf(fmtCmdAutheliaCryptoHashGenerateSubLong, useFmt, useFmt),
+		Example: fmt.Sprintf(fmtCmdAutheliaCryptoHashGenerateSubExample, use),
+		Args:    cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return nil
+		},
+
+		DisableAutoGenTag: true,
+	}
+
+	cmdFlagConfig(cmd)
+	cmdFlagPassword(cmd, true)
+	cmdFlagRandomPassword(cmd)
+
+	switch use {
+	case cmdUseHashArgon2:
+		cmdFlagIterations(cmd, schema.DefaultPasswordConfig.Argon2.Iterations)
+		cmdFlagParallelism(cmd, schema.DefaultPasswordConfig.Argon2.Parallelism)
+		cmdFlagKeySize(cmd, schema.DefaultPasswordConfig.Argon2.KeyLength)
+		cmdFlagSaltSize(cmd, schema.DefaultPasswordConfig.Argon2.SaltLength)
+
+		cmd.Flags().StringP(cmdFlagNameVariant, "v", schema.DefaultPasswordConfig.Argon2.Variant, "variant, options are 'argon2id', 'argon2i', and 'argon2d'")
+		cmd.Flags().IntP(cmdFlagNameMemory, "m", schema.DefaultPasswordConfig.Argon2.Memory, "memory in kibibytes")
+		cmd.Flags().String(cmdFlagNameProfile, "", "profile to use, options are low-memory and recommended")
+
+		cmd.RunE = cryptoHashGenerateArgon2RunE
+	case cmdUseHashSHA2Crypt:
+		cmdFlagIterations(cmd, schema.DefaultPasswordConfig.SHA2Crypt.Iterations)
+		cmdFlagSaltSize(cmd, schema.DefaultPasswordConfig.SHA2Crypt.SaltLength)
+
+		cmd.Flags().StringP(cmdFlagNameVariant, "v", schema.DefaultPasswordConfig.SHA2Crypt.Variant, "variant, options are sha256 and sha512")
+
+		cmd.RunE = cryptoHashGenerateSHA2CryptRunE
+	case cmdUseHashPBKDF2:
+		cmdFlagIterations(cmd, schema.DefaultPasswordConfig.PBKDF2.Iterations)
+		cmdFlagSaltSize(cmd, schema.DefaultPasswordConfig.PBKDF2.SaltLength)
+
+		cmd.Flags().StringP(cmdFlagNameVariant, "v", schema.DefaultPasswordConfig.PBKDF2.Variant, "variant, options are 'sha1', 'sha224', 'sha256', 'sha384', and 'sha512'")
+
+		cmd.RunE = cryptoHashGeneratePBKDF2RunE
+	case cmdUseHashBCrypt:
+		cmd.Flags().StringP(cmdFlagNameVariant, "v", schema.DefaultPasswordConfig.BCrypt.Variant, "variant, options are 'standard' and 'sha256'")
+		cmd.Flags().IntP(cmdFlagNameCost, "i", schema.DefaultPasswordConfig.BCrypt.Cost, "hashing cost")
+
+		cmd.RunE = cryptoHashGenerateBCryptRunE
+	case cmdUseHashSCrypt:
+		cmdFlagIterations(cmd, schema.DefaultPasswordConfig.SCrypt.Iterations)
+		cmdFlagKeySize(cmd, schema.DefaultPasswordConfig.SCrypt.KeyLength)
+		cmdFlagSaltSize(cmd, schema.DefaultPasswordConfig.SCrypt.SaltLength)
+		cmdFlagParallelism(cmd, schema.DefaultPasswordConfig.SCrypt.Parallelism)
+
+		cmd.Flags().IntP(cmdFlagNameBlockSize, "r", schema.DefaultPasswordConfig.SCrypt.BlockSize, "block size")
+
+		cmd.RunE = cryptoHashGenerateSCryptRunE
+	}
+
+	return cmd
+}
+
+func cryptoHashGenerateArgon2RunE(cmd *cobra.Command, args []string) (err error) {
+	flagsMap := map[string]string{
+		cmdFlagNameVariant:     prefixFilePassword + ".argon2.variant",
+		cmdFlagNameIterations:  prefixFilePassword + ".argon2.iterations",
+		cmdFlagNameMemory:      prefixFilePassword + ".argon2.memory",
+		cmdFlagNameParallelism: prefixFilePassword + ".argon2.parallelism",
+		cmdFlagNameKeySize:     prefixFilePassword + ".argon2.key_length",
+		cmdFlagNameSaltSize:    prefixFilePassword + ".argon2.salt_length",
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func cryptoHashGenerateSHA2CryptRunE(cmd *cobra.Command, args []string) (err error) {
+	flagsMap := map[string]string{
+		cmdFlagNameVariant:    prefixFilePassword + ".sha2crypt.variant",
+		cmdFlagNameIterations: prefixFilePassword + ".sha2crypt.iterations",
+		cmdFlagNameSaltSize:   prefixFilePassword + ".sha2crypt.salt_length",
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func cryptoHashGeneratePBKDF2RunE(cmd *cobra.Command, args []string) (err error) {
+	flagsMap := map[string]string{
+		cmdFlagNameVariant:    prefixFilePassword + ".pbkdf2.variant",
+		cmdFlagNameIterations: prefixFilePassword + ".pbkdf2.iterations",
+		cmdFlagNameKeySize:    prefixFilePassword + ".pbkdf2.key_length",
+		cmdFlagNameSaltSize:   prefixFilePassword + ".pbkdf2.salt_length",
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func cryptoHashGenerateBCryptRunE(cmd *cobra.Command, args []string) (err error) {
+	flagsMap := map[string]string{
+		cmdFlagNameVariant: prefixFilePassword + ".bcrypt.variant",
+		cmdFlagNameCost:    prefixFilePassword + ".bcrypt.cost",
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func cryptoHashGenerateSCryptRunE(cmd *cobra.Command, args []string) (err error) {
+	flagsMap := map[string]string{
+		cmdFlagNameIterations:  prefixFilePassword + ".scrypt.iterations",
+		cmdFlagNameBlockSize:   prefixFilePassword + ".scrypt.block_size",
+		cmdFlagNameParallelism: prefixFilePassword + ".scrypt.parallelism",
+		cmdFlagNameKeySize:     prefixFilePassword + ".scrypt.key_length",
+		cmdFlagNameSaltSize:    prefixFilePassword + ".scrypt.salt_length",
+	}
+
+	return cmdCryptoHashGenerateFinish(cmd, args, flagsMap)
+}
+
+func newCryptoHashValidateCmd() (cmd *cobra.Command) {
+	cmd = &cobra.Command{
+		Use:     fmt.Sprintf(cmdUseFmtValidate, cmdUseValidate),
+		Short:   cmdAutheliaCryptoHashValidateShort,
+		Long:    cmdAutheliaCryptoHashValidateLong,
+		Example: cmdAutheliaCryptoHashValidateExample,
+		Args:    cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) (err error) {
+			var (
+				password string
+				valid    bool
+			)
+
+			if password, _, err = cmdCryptoHashGetPassword(cmd, args, false, false); err != nil {
+				return fmt.Errorf("error occurred trying to obtain the password: %w", err)
+			}
+
+			if len(password) == 0 {
+				return fmt.Errorf("no password provided")
+			}
+
+			if valid, err = crypt.CheckPassword(password, args[0]); err != nil {
+				return fmt.Errorf("error occurred trying to validate the password against the digest: %w", err)
+			}
+
+			switch {
+			case valid:
+				fmt.Println("The password matches the digest.")
+			default:
+				fmt.Println("The password does not match the digest.")
+			}
+
+			return nil
+		},
+
+		DisableAutoGenTag: true,
+	}
+
+	cmdFlagPassword(cmd, false)
+
+	return cmd
+}
+
+func cmdCryptoHashGenerateFinish(cmd *cobra.Command, args []string, flagsMap map[string]string) (err error) {
+	var (
+		algorithm string
+		configs   []string
+
+		c schema.Password
+	)
+
+	if configs, err = cmd.Flags().GetStringSlice(cmdFlagNameConfig); err != nil {
+		return err
+	}
+
+	// Skip config if the flag wasn't set and the default is non-existent.
+	if !cmd.Flags().Changed(cmdFlagNameConfig) {
+		configs = configFilterExisting(configs)
+	}
+
+	legacy := cmd.Use == cmdUseHashPassword
+
+	switch {
+	case cmd.Use == cmdUseGenerate:
+		break
+	case legacy:
+		if sha512, _ := cmd.Flags().GetBool(cmdFlagNameSHA512); sha512 {
+			algorithm = cmdUseHashSHA2Crypt
+		} else {
+			algorithm = cmdUseHashArgon2
+		}
+	default:
+		algorithm = cmd.Use
+	}
+
+	if c, err = cmdCryptoHashGetConfig(algorithm, configs, cmd.Flags(), flagsMap); err != nil {
+		return err
+	}
+
+	if legacy && algorithm == cmdUseHashArgon2 && cmd.Flags().Changed(cmdFlagNameMemory) {
+		c.Argon2.Memory *= 1024
+	}
+
+	var (
+		hash     crypt.Hash
+		digest   crypt.Digest
+		password string
+		random   bool
+	)
+
+	if password, random, err = cmdCryptoHashGetPassword(cmd, args, legacy, !legacy); err != nil {
+		return err
+	}
+
+	if len(password) == 0 {
+		return fmt.Errorf("no password provided")
+	}
+
+	if hash, err = authentication.NewFileCryptoHashFromConfig(c); err != nil {
+		return err
+	}
+
+	if digest, err = hash.Hash(password); err != nil {
+		return err
+	}
+
+	if random {
+		fmt.Printf("Random Password: %s\n", password)
+	}
+
+	fmt.Printf("Digest: %s\n", digest.Encode())
+
+	return nil
+}
+
+func cmdCryptoHashGetConfig(algorithm string, configs []string, flags *pflag.FlagSet, flagsMap map[string]string) (c schema.Password, err error) {
+	mapDefaults := map[string]interface{}{
+		prefixFilePassword + ".algorithm":             schema.DefaultPasswordConfig.Algorithm,
+		prefixFilePassword + ".argon2.variant":        schema.DefaultPasswordConfig.Argon2.Variant,
+		prefixFilePassword + ".argon2.iterations":     schema.DefaultPasswordConfig.Argon2.Iterations,
+		prefixFilePassword + ".argon2.memory":         schema.DefaultPasswordConfig.Argon2.Memory,
+		prefixFilePassword + ".argon2.parallelism":    schema.DefaultPasswordConfig.Argon2.Parallelism,
+		prefixFilePassword + ".argon2.key_length":     schema.DefaultPasswordConfig.Argon2.KeyLength,
+		prefixFilePassword + ".argon2.salt_length":    schema.DefaultPasswordConfig.Argon2.SaltLength,
+		prefixFilePassword + ".sha2crypt.variant":     schema.DefaultPasswordConfig.SHA2Crypt.Variant,
+		prefixFilePassword + ".sha2crypt.iterations":  schema.DefaultPasswordConfig.SHA2Crypt.Iterations,
+		prefixFilePassword + ".sha2crypt.salt_length": schema.DefaultPasswordConfig.SHA2Crypt.SaltLength,
+		prefixFilePassword + ".pbkdf2.variant":        schema.DefaultPasswordConfig.PBKDF2.Variant,
+		prefixFilePassword + ".pbkdf2.iterations":     schema.DefaultPasswordConfig.PBKDF2.Iterations,
+		prefixFilePassword + ".pbkdf2.salt_length":    schema.DefaultPasswordConfig.PBKDF2.SaltLength,
+		prefixFilePassword + ".bcrypt.variant":        schema.DefaultPasswordConfig.BCrypt.Variant,
+		prefixFilePassword + ".bcrypt.cost":           schema.DefaultPasswordConfig.BCrypt.Cost,
+		prefixFilePassword + ".scrypt.iterations":     schema.DefaultPasswordConfig.SCrypt.Iterations,
+		prefixFilePassword + ".scrypt.block_size":     schema.DefaultPasswordConfig.SCrypt.BlockSize,
+		prefixFilePassword + ".scrypt.parallelism":    schema.DefaultPasswordConfig.SCrypt.Parallelism,
+		prefixFilePassword + ".scrypt.key_length":     schema.DefaultPasswordConfig.SCrypt.KeyLength,
+		prefixFilePassword + ".scrypt.salt_length":    schema.DefaultPasswordConfig.SCrypt.SaltLength,
+	}
+
+	sources := configuration.NewDefaultSourcesWithDefaults(configs,
+		configuration.DefaultEnvPrefix, configuration.DefaultEnvDelimiter,
+		configuration.NewMapSource(mapDefaults),
+		configuration.NewCommandLineSourceWithMapping(flags, flagsMap, false, false),
+	)
+
+	if algorithm != "" {
+		alg := map[string]interface{}{prefixFilePassword + ".algorithm": algorithm}
+
+		sources = append(sources, configuration.NewMapSource(alg))
+	}
+
+	val := schema.NewStructValidator()
+
+	if _, err = configuration.LoadAdvanced(val, prefixFilePassword, &c, sources...); err != nil {
+		return schema.Password{}, fmt.Errorf("error occurred loading configuration: %w", err)
+	}
+
+	validator.ValidatePasswordConfiguration(&c, val)
+
+	errs := val.Errors()
+
+	if len(errs) != 0 {
+		for i, e := range errs {
+			if i == 0 {
+				err = e
+				continue
+			}
+
+			err = fmt.Errorf("%v, %w", err, e)
+		}
+
+		return schema.Password{}, fmt.Errorf("errors occurred validating the password configuration: %w", err)
+	}
+
+	return c, nil
+}
+
+func cmdCryptoHashGetPassword(cmd *cobra.Command, args []string, useArgs, useRandom bool) (password string, random bool, err error) {
+	if useRandom {
+		if random, err = cmd.Flags().GetBool(cmdFlagNameRandom); err != nil {
+			return
+		}
+	}
+
+	switch {
+	case random:
+		var length int
+
+		if length, err = cmd.Flags().GetInt(cmdFlagNameRandomLength); err != nil {
+			return
+		}
+
+		password = utils.RandomString(length, utils.CharSetAlphaNumeric, true)
+
+		return
+	case cmd.Flags().Changed(cmdFlagNamePassword):
+		password, err = cmd.Flags().GetString(cmdFlagNamePassword)
+
+		return
+	case useArgs && len(args) != 0:
+		password, err = strings.Join(args, " "), nil
+
+		return
+	}
+
+	var (
+		data      []byte
+		noConfirm bool
+	)
+
+	if data, err = hashReadPasswordWithPrompt("Enter Password: "); err != nil {
+		err = fmt.Errorf("failed to read the password from the terminal: %w", err)
+
+		return
+	}
+
+	password = string(data)
+
+	if cmd.Use == fmt.Sprintf(cmdUseFmtValidate, cmdUseValidate) {
+		fmt.Println("")
+
+		return
+	}
+
+	if noConfirm, err = cmd.Flags().GetBool(cmdFlagNameNoConfirm); err == nil && !noConfirm {
+		if data, err = hashReadPasswordWithPrompt("Confirm Password: "); err != nil {
+			err = fmt.Errorf("failed to read the password from the terminal: %w", err)
+			return
+		}
+
+		if password != string(data) {
+			fmt.Println("")
+
+			err = fmt.Errorf("the password did not match the confirmation password")
+
+			return
+		}
+	}
+
+	fmt.Println("")
+
+	return
+}
+
+func hashReadPasswordWithPrompt(prompt string) (data []byte, err error) {
+	fmt.Print(prompt)
+
+	if data, err = term.ReadPassword(int(syscall.Stdin)); err != nil { //nolint:unconvert // Conversion required.
+		if err.Error() == "inappropriate ioctl for device" {
+			return nil, fmt.Errorf("the terminal doesn't appear to be interactive either use the '--password' flag or use an interactive terminal: %w", err)
+		}
+
+		return nil, err
+	}
+
+	fmt.Println("")
+
+	return data, nil
+}
+
+func cmdFlagConfig(cmd *cobra.Command) {
+	cmd.Flags().StringSliceP(cmdFlagNameConfig, "c", []string{"configuration.yml"}, "configuration files to load")
+}
+
+func cmdFlagPassword(cmd *cobra.Command, noConfirm bool) {
+	cmd.Flags().String(cmdFlagNamePassword, "", "manually supply the password rather than using the terminal prompt")
+
+	if noConfirm {
+		cmd.Flags().Bool(cmdFlagNameNoConfirm, false, "skip the password confirmation prompt")
+	}
+}
+
+func cmdFlagRandomPassword(cmd *cobra.Command) {
+	cmd.Flags().Bool(cmdFlagNameRandom, false, "uses a randomly generated password")
+	cmd.Flags().Int(cmdFlagNameRandomLength, 72, "when using a randomly generated password it configures the length")
+}
+
+func cmdFlagIterations(cmd *cobra.Command, value int) {
+	cmd.Flags().IntP(cmdFlagNameIterations, "i", value, "number of iterations")
+}
+
+func cmdFlagKeySize(cmd *cobra.Command, value int) {
+	cmd.Flags().IntP(cmdFlagNameKeySize, "k", value, "key size in bytes")
+}
+
+func cmdFlagSaltSize(cmd *cobra.Command, value int) {
+	cmd.Flags().IntP(cmdFlagNameSaltSize, "s", value, "salt size in bytes")
+}
+
+func cmdFlagParallelism(cmd *cobra.Command, value int) {
+	cmd.Flags().IntP(cmdFlagNameParallelism, "p", value, "parallelism or threads")
+}

internal/commands/crypto_helper.go

@@ -416,7 +416,20 @@ func cryptoGetCertificateFromCmd(cmd *cobra.Command) (certificate *x509.Certific
 	return certificate, nil
 }
 
-func fmtCryptoUse(use string) string {
+func fmtCryptoHashUse(use string) string {
+	switch use {
+	case cmdUseHashArgon2:
+		return "Argon2"
+	case cmdUseHashSHA2Crypt:
+		return "SHA2 Crypt"
+	case cmdUseHashPBKDF2:
+		return "PBKDF2"
+	default:
+		return use
+	}
+}
+
+func fmtCryptoCertificateUse(use string) string {
 	switch use {
 	case cmdUseEd25519:
 		return "Ed25519"

internal/commands/hash.go

@@ -1,121 +0,0 @@
-package commands
-
-import (
-	"fmt"
-
-	"github.com/simia-tech/crypt"
-	"github.com/spf13/cobra"
-
-	"github.com/authelia/authelia/v4/internal/authentication"
-	"github.com/authelia/authelia/v4/internal/configuration"
-	"github.com/authelia/authelia/v4/internal/configuration/schema"
-	"github.com/authelia/authelia/v4/internal/configuration/validator"
-)
-
-func newHashPasswordCmd() (cmd *cobra.Command) {
-	cmd = &cobra.Command{
-		Use:     "hash-password [flags] -- <password>",
-		Short:   cmdAutheliaHashPasswordShort,
-		Long:    cmdAutheliaHashPasswordLong,
-		Example: cmdAutheliaHashPasswordExample,
-		Args:    cobra.MinimumNArgs(1),
-		RunE:    cmdHashPasswordRunE,
-
-		DisableAutoGenTag: true,
-	}
-
-	cmd.Flags().BoolP("sha512", "z", false, fmt.Sprintf("use sha512 as the algorithm (changes iterations to %d, change with -i)", schema.DefaultPasswordSHA512Configuration.Iterations))
-	cmd.Flags().IntP("iterations", "i", schema.DefaultPasswordConfiguration.Iterations, "set the number of hashing iterations")
-	cmd.Flags().StringP("salt", "s", "", "set the salt string")
-	cmd.Flags().IntP("memory", "m", schema.DefaultPasswordConfiguration.Memory, "[argon2id] set the amount of memory param (in MB)")
-	cmd.Flags().IntP("parallelism", "p", schema.DefaultPasswordConfiguration.Parallelism, "[argon2id] set the parallelism param")
-	cmd.Flags().IntP("key-length", "k", schema.DefaultPasswordConfiguration.KeyLength, "[argon2id] set the key length param")
-	cmd.Flags().IntP("salt-length", "l", schema.DefaultPasswordConfiguration.SaltLength, "set the auto-generated salt length")
-	cmd.Flags().StringSliceP("config", "c", []string{}, "Configuration files")
-
-	return cmd
-}
-
-func cmdHashPasswordRunE(cmd *cobra.Command, args []string) (err error) {
-	salt, _ := cmd.Flags().GetString("salt")
-	sha512, _ := cmd.Flags().GetBool("sha512")
-	configs, _ := cmd.Flags().GetStringSlice("config")
-
-	mapDefaults := map[string]interface{}{
-		"authentication_backend.file.password.algorithm":   schema.DefaultPasswordConfiguration.Algorithm,
-		"authentication_backend.file.password.iterations":  schema.DefaultPasswordConfiguration.Iterations,
-		"authentication_backend.file.password.key_length":  schema.DefaultPasswordConfiguration.KeyLength,
-		"authentication_backend.file.password.salt_length": schema.DefaultPasswordConfiguration.SaltLength,
-		"authentication_backend.file.password.parallelism": schema.DefaultPasswordConfiguration.Parallelism,
-		"authentication_backend.file.password.memory":      schema.DefaultPasswordConfiguration.Memory,
-	}
-
-	if sha512 {
-		mapDefaults["authentication_backend.file.password.algorithm"] = schema.DefaultPasswordSHA512Configuration.Algorithm
-		mapDefaults["authentication_backend.file.password.iterations"] = schema.DefaultPasswordSHA512Configuration.Iterations
-		mapDefaults["authentication_backend.file.password.salt_length"] = schema.DefaultPasswordSHA512Configuration.SaltLength
-	}
-
-	mapCLI := map[string]string{
-		"iterations":  "authentication_backend.file.password.iterations",
-		"key-length":  "authentication_backend.file.password.key_length",
-		"salt-length": "authentication_backend.file.password.salt_length",
-		"parallelism": "authentication_backend.file.password.parallelism",
-		"memory":      "authentication_backend.file.password.memory",
-	}
-
-	sources := configuration.NewDefaultSourcesWithDefaults(configs,
-		configuration.DefaultEnvPrefix, configuration.DefaultEnvDelimiter,
-		configuration.NewMapSource(mapDefaults),
-		configuration.NewCommandLineSourceWithMapping(cmd.Flags(), mapCLI, false, false),
-	)
-
-	val := schema.NewStructValidator()
-
-	if _, config, err = configuration.Load(val, sources...); err != nil {
-		return fmt.Errorf("error occurred loading configuration: %w", err)
-	}
-
-	var (
-		hash      string
-		algorithm authentication.CryptAlgo
-	)
-
-	p := config.AuthenticationBackend.File.Password
-
-	switch p.Algorithm {
-	case "sha512":
-		algorithm = authentication.HashingAlgorithmSHA512
-	default:
-		algorithm = authentication.HashingAlgorithmArgon2id
-	}
-
-	validator.ValidatePasswordConfiguration(p, val)
-
-	errs := val.Errors()
-
-	if len(errs) != 0 {
-		for i, e := range errs {
-			if i == 0 {
-				err = e
-				continue
-			}
-
-			err = fmt.Errorf("%v, %w", err, e)
-		}
-
-		return fmt.Errorf("errors occurred validating the password configuration: %w", err)
-	}
-
-	if salt != "" {
-		salt = crypt.Base64Encoding.EncodeToString([]byte(salt))
-	}
-
-	if hash, err = authentication.HashPassword(args[0], salt, algorithm, p.Iterations, p.Memory*1024, p.Parallelism, p.KeyLength, p.SaltLength); err != nil {
-		return fmt.Errorf("error during password hashing: %w", err)
-	}
-
-	fmt.Printf("Password hash: %s\n", hash)
-
-	return nil
-}

internal/commands/root.go

@@ -42,12 +42,12 @@ func NewRootCmd() (cmd *cobra.Command) {
 	cmdWithConfigFlags(cmd, false, []string{})
 
 	cmd.AddCommand(
+		newAccessControlCommand(),
 		newBuildInfoCmd(),
 		newCryptoCmd(),
 		newHashPasswordCmd(),
 		newStorageCmd(),
 		newValidateConfigCmd(),
-		newAccessControlCommand(),
 	)
 
 	return cmd

internal/commands/storage_run.go

@@ -29,13 +29,13 @@ import (
 func storagePersistentPreRunE(cmd *cobra.Command, _ []string) (err error) {
 	var configs []string
 
-	if configs, err = cmd.Flags().GetStringSlice("config"); err != nil {
+	if configs, err = cmd.Flags().GetStringSlice(cmdFlagNameConfig); err != nil {
 		return err
 	}
 
 	sources := make([]configuration.Source, 0, len(configs)+3)
 
-	if cmd.Flags().Changed("config") {
+	if cmd.Flags().Changed(cmdFlagNameConfig) {
 		for _, configFile := range configs {
 			if _, err := os.Stat(configFile); os.IsNotExist(err) {
 				return fmt.Errorf("could not load the provided configuration file %s: %w", configFile, err)
@@ -406,7 +406,7 @@ func storageTOTPExportGetConfigFromFlags(cmd *cobra.Command) (format, dir string
 		break
 	case storageTOTPExportFormatPNG:
 		if dir == "" {
-			dir = utils.RandomString(8, utils.AlphaNumericCharacters, false)
+			dir = utils.RandomString(8, utils.CharSetAlphaNumeric, false)
 		}
 
 		if _, err = os.Stat(dir); !os.IsNotExist(err) {

internal/commands/util.go

@@ -2,6 +2,7 @@ package commands
 
 import (
 	"fmt"
+	"os"
 )
 
 func recoverErr(i any) error {
@@ -16,3 +17,15 @@ func recoverErr(i any) error {
 		return fmt.Errorf("recovered panic with unknown type: %v", v)
 	}
 }
+
+func configFilterExisting(configs []string) (finalConfigs []string) {
+	var err error
+
+	for _, c := range configs {
+		if _, err = os.Stat(c); err == nil || !os.IsNotExist(err) {
+			finalConfigs = append(finalConfigs, c)
+		}
+	}
+
+	return finalConfigs
+}

internal/commands/validate.go

@@ -31,7 +31,7 @@ func cmdValidateConfigRunE(cmd *cobra.Command, _ []string) (err error) {
 		val     *schema.StructValidator
 	)
 
-	if configs, err = cmd.Flags().GetStringSlice("config"); err != nil {
+	if configs, err = cmd.Flags().GetStringSlice(cmdFlagNameConfig); err != nil {
 		return err
 	}
 

internal/configuration/config.template.yml

@@ -393,12 +393,32 @@ authentication_backend:
   # file:
   #   path: /config/users_database.yml
   #   password:
-  #     algorithm: argon2id
-  #     iterations: 1
-  #     key_length: 32
-  #     salt_length: 16
-  #     memory: 1024
-  #     parallelism: 8
+  #     algorithm: argon2
+  #     argon2:
+  #       variant: argon2id
+  #       iterations: 3
+  #       memory: 65536
+  #       parallelism: 4
+  #       key_length: 32
+  #       salt_length: 16
+  #     scrypt:
+  #       iterations: 16
+  #       block_size: 8
+  #       parallelism: 1
+  #       key_length: 32
+  #       salt_length: 16
+  #     pbkdf2:
+  #       variant: sha512
+  #       iterations: 310000
+  #       salt_length: 16
+  #     sha2crypt:
+  #       variant: sha512
+  #       iterations: 50000
+  #       salt_length: 16
+  #     bcrypt:
+  #       variant: standard
+  #       cost: 12
+
 
 ##
 ## Password Policy Configuration.

internal/configuration/schema/authentication.go

@@ -5,8 +5,86 @@ import (
 	"time"
 )
 
-// LDAPAuthenticationBackendConfiguration represents the configuration related to LDAP server.
-type LDAPAuthenticationBackendConfiguration struct {
+// AuthenticationBackend represents the configuration related to the authentication backend.
+type AuthenticationBackend struct {
+	PasswordReset PasswordResetAuthenticationBackend `koanf:"password_reset"`
+
+	RefreshInterval string `koanf:"refresh_interval"`
+
+	File *FileAuthenticationBackend `koanf:"file"`
+	LDAP *LDAPAuthenticationBackend `koanf:"ldap"`
+}
+
+// PasswordResetAuthenticationBackend represents the configuration related to password reset functionality.
+type PasswordResetAuthenticationBackend struct {
+	Disable   bool    `koanf:"disable"`
+	CustomURL url.URL `koanf:"custom_url"`
+}
+
+// FileAuthenticationBackend represents the configuration related to file-based backend.
+type FileAuthenticationBackend struct {
+	Path     string   `koanf:"path"`
+	Password Password `koanf:"password"`
+}
+
+// Password represents the configuration related to password hashing.
+type Password struct {
+	Algorithm string `koanf:"algorithm"`
+
+	Argon2    Argon2Password    `koanf:"argon2"`
+	SHA2Crypt SHA2CryptPassword `koanf:"sha2crypt"`
+	PBKDF2    PBKDF2Password    `koanf:"pbkdf2"`
+	BCrypt    BCryptPassword    `koanf:"bcrypt"`
+	SCrypt    SCryptPassword    `koanf:"scrypt"`
+
+	Iterations  int `koanf:"iterations"`
+	Memory      int `koanf:"memory"`
+	Parallelism int `koanf:"parallelism"`
+	KeyLength   int `koanf:"key_length"`
+	SaltLength  int `koanf:"salt_length"`
+}
+
+// Argon2Password represents the argon2 hashing settings.
+type Argon2Password struct {
+	Variant     string `koanf:"variant"`
+	Iterations  int    `koanf:"iterations"`
+	Memory      int    `koanf:"memory"`
+	Parallelism int    `koanf:"parallelism"`
+	KeyLength   int    `koanf:"key_length"`
+	SaltLength  int    `koanf:"salt_length"`
+}
+
+// SHA2CryptPassword represents the sha2crypt hashing settings.
+type SHA2CryptPassword struct {
+	Variant    string `koanf:"variant"`
+	Iterations int    `koanf:"iterations"`
+	SaltLength int    `koanf:"salt_length"`
+}
+
+// PBKDF2Password represents the PBKDF2 hashing settings.
+type PBKDF2Password struct {
+	Variant    string `koanf:"variant"`
+	Iterations int    `koanf:"iterations"`
+	SaltLength int    `koanf:"salt_length"`
+}
+
+// BCryptPassword represents the bcrypt hashing settings.
+type BCryptPassword struct {
+	Variant string `koanf:"variant"`
+	Cost    int    `koanf:"cost"`
+}
+
+// SCryptPassword represents the scrypt hashing settings.
+type SCryptPassword struct {
+	Iterations  int `koanf:"iterations"`
+	BlockSize   int `koanf:"block_size"`
+	Parallelism int `koanf:"parallelism"`
+	KeyLength   int `koanf:"key_length"`
+	SaltLength  int `koanf:"salt_length"`
+}
+
+// LDAPAuthenticationBackend represents the configuration related to LDAP server.
+type LDAPAuthenticationBackend struct {
 	Implementation string        `koanf:"implementation"`
 	URL            string        `koanf:"url"`
 	Timeout        time.Duration `koanf:"timeout"`
@@ -34,68 +112,59 @@ type LDAPAuthenticationBackendConfiguration struct {
 	Password string `koanf:"password"`
 }
 
-// FileAuthenticationBackendConfiguration represents the configuration related to file-based backend.
-type FileAuthenticationBackendConfiguration struct {
-	Path     string                 `koanf:"path"`
-	Password *PasswordConfiguration `koanf:"password"`
+// DefaultPasswordConfig represents the default configuration related to Argon2id hashing.
+var DefaultPasswordConfig = Password{
+	Algorithm: argon2,
+	Argon2: Argon2Password{
+		Variant:     argon2id,
+		Iterations:  3,
+		Memory:      64 * 1024,
+		Parallelism: 4,
+		KeyLength:   32,
+		SaltLength:  16,
+	},
+	SHA2Crypt: SHA2CryptPassword{
+		Variant:    sha512,
+		Iterations: 50000,
+		SaltLength: 16,
+	},
+	PBKDF2: PBKDF2Password{
+		Variant:    sha512,
+		Iterations: 310000,
+		SaltLength: 16,
+	},
+	BCrypt: BCryptPassword{
+		Variant: "standard",
+		Cost:    12,
+	},
+	SCrypt: SCryptPassword{
+		Iterations:  16,
+		BlockSize:   8,
+		Parallelism: 1,
+		KeyLength:   32,
+		SaltLength:  16,
+	},
 }
 
-// PasswordConfiguration represents the configuration related to password hashing.
-type PasswordConfiguration struct {
-	Iterations  int    `koanf:"iterations"`
-	KeyLength   int    `koanf:"key_length"`
-	SaltLength  int    `koanf:"salt_length"`
-	Algorithm   string `koanf:"algorithm"`
-	Memory      int    `koanf:"memory"`
-	Parallelism int    `koanf:"parallelism"`
+// DefaultCIPasswordConfig represents the default configuration related to Argon2id hashing for CI.
+var DefaultCIPasswordConfig = Password{
+	Algorithm: argon2,
+	Argon2: Argon2Password{
+		Iterations:  3,
+		Memory:      64,
+		Parallelism: 4,
+		KeyLength:   32,
+		SaltLength:  16,
+	},
+	SHA2Crypt: SHA2CryptPassword{
+		Variant:    sha512,
+		Iterations: 50000,
+		SaltLength: 16,
+	},
 }
 
-// AuthenticationBackendConfiguration represents the configuration related to the authentication backend.
-type AuthenticationBackendConfiguration struct {
-	LDAP *LDAPAuthenticationBackendConfiguration `koanf:"ldap"`
-	File *FileAuthenticationBackendConfiguration `koanf:"file"`
-
-	PasswordReset PasswordResetAuthenticationBackendConfiguration `koanf:"password_reset"`
-
-	RefreshInterval string `koanf:"refresh_interval"`
-}
-
-// PasswordResetAuthenticationBackendConfiguration represents the configuration related to password reset functionality.
-type PasswordResetAuthenticationBackendConfiguration struct {
-	Disable   bool    `koanf:"disable"`
-	CustomURL url.URL `koanf:"custom_url"`
-}
-
-// DefaultPasswordConfiguration represents the default configuration related to Argon2id hashing.
-var DefaultPasswordConfiguration = PasswordConfiguration{
-	Iterations:  3,
-	KeyLength:   32,
-	SaltLength:  16,
-	Algorithm:   argon2id,
-	Memory:      64,
-	Parallelism: 4,
-}
-
-// DefaultCIPasswordConfiguration represents the default configuration related to Argon2id hashing for CI.
-var DefaultCIPasswordConfiguration = PasswordConfiguration{
-	Iterations:  3,
-	KeyLength:   32,
-	SaltLength:  16,
-	Algorithm:   argon2id,
-	Memory:      64,
-	Parallelism: 4,
-}
-
-// DefaultPasswordSHA512Configuration represents the default configuration related to SHA512 hashing.
-var DefaultPasswordSHA512Configuration = PasswordConfiguration{
-	Iterations: 50000,
-	SaltLength: 16,
-	Algorithm:  "sha512",
-}
-
-// DefaultLDAPAuthenticationBackendConfiguration represents the default LDAP config.
-var DefaultLDAPAuthenticationBackendConfiguration = LDAPAuthenticationBackendConfiguration{
-	Implementation:       LDAPImplementationCustom,
+// DefaultLDAPAuthenticationBackendConfigurationImplementationCustom represents the default LDAP config.
+var DefaultLDAPAuthenticationBackendConfigurationImplementationCustom = LDAPAuthenticationBackend{
 	UsernameAttribute:    "uid",
 	MailAttribute:        "mail",
 	DisplayNameAttribute: "displayName",
@@ -106,12 +175,16 @@ var DefaultLDAPAuthenticationBackendConfiguration = LDAPAuthenticationBackendCon
 	},
 }
 
-// DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration represents the default LDAP config for the MSAD Implementation.
-var DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration = LDAPAuthenticationBackendConfiguration{
+// DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory represents the default LDAP config for the MSAD Implementation.
+var DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory = LDAPAuthenticationBackend{
 	UsersFilter:          "(&(|({username_attribute}={input})({mail_attribute}={input}))(sAMAccountType=805306368)(!(userAccountControl:1.2.840.113556.1.4.803:=2))(!(pwdLastSet=0)))",
 	UsernameAttribute:    "sAMAccountName",
 	MailAttribute:        "mail",
 	DisplayNameAttribute: "displayName",
 	GroupsFilter:         "(&(member={dn})(objectClass=group))",
 	GroupNameAttribute:   "cn",
+	Timeout:              time.Second * 5,
+	TLS: &TLSConfig{
+		MinimumVersion: "TLS1.2",
+	},
 }

internal/configuration/schema/configuration.go

@@ -8,19 +8,19 @@ type Configuration struct {
 	DefaultRedirectionURL string `koanf:"default_redirection_url"`
 	Default2FAMethod      string `koanf:"default_2fa_method"`
 
-	Log                   LogConfiguration                   `koanf:"log"`
-	IdentityProviders     IdentityProvidersConfiguration     `koanf:"identity_providers"`
-	AuthenticationBackend AuthenticationBackendConfiguration `koanf:"authentication_backend"`
-	Session               SessionConfiguration               `koanf:"session"`
-	TOTP                  TOTPConfiguration                  `koanf:"totp"`
-	DuoAPI                DuoAPIConfiguration                `koanf:"duo_api"`
-	AccessControl         AccessControlConfiguration         `koanf:"access_control"`
-	NTP                   NTPConfiguration                   `koanf:"ntp"`
-	Regulation            RegulationConfiguration            `koanf:"regulation"`
-	Storage               StorageConfiguration               `koanf:"storage"`
-	Notifier              NotifierConfiguration              `koanf:"notifier"`
-	Server                ServerConfiguration                `koanf:"server"`
-	Telemetry             TelemetryConfig                    `koanf:"telemetry"`
-	Webauthn              WebauthnConfiguration              `koanf:"webauthn"`
-	PasswordPolicy        PasswordPolicyConfiguration        `koanf:"password_policy"`
+	Log                   LogConfiguration               `koanf:"log"`
+	IdentityProviders     IdentityProvidersConfiguration `koanf:"identity_providers"`
+	AuthenticationBackend AuthenticationBackend          `koanf:"authentication_backend"`
+	Session               SessionConfiguration           `koanf:"session"`
+	TOTP                  TOTPConfiguration              `koanf:"totp"`
+	DuoAPI                DuoAPIConfiguration            `koanf:"duo_api"`
+	AccessControl         AccessControlConfiguration     `koanf:"access_control"`
+	NTP                   NTPConfiguration               `koanf:"ntp"`
+	Regulation            RegulationConfiguration        `koanf:"regulation"`
+	Storage               StorageConfiguration           `koanf:"storage"`
+	Notifier              NotifierConfiguration          `koanf:"notifier"`
+	Server                ServerConfiguration            `koanf:"server"`
+	Telemetry             TelemetryConfig                `koanf:"telemetry"`
+	Webauthn              WebauthnConfiguration          `koanf:"webauthn"`
+	PasswordPolicy        PasswordPolicyConfiguration    `koanf:"password_policy"`
 }

internal/configuration/schema/const.go

@@ -5,7 +5,12 @@ import (
 	"time"
 )
 
-const argon2id = "argon2id"
+const (
+	argon2   = "argon2"
+	argon2id = "argon2id"
+	sha512   = "sha512"
+	sha256   = "sha256"
+)
 
 // ProfileRefreshDisabled represents a value for refresh_interval that disables the check entirely.
 const ProfileRefreshDisabled = "disable"

internal/configuration/schema/keys.go

@@ -46,6 +46,35 @@ var Keys = []string{
 	"identity_providers.oidc.clients[].userinfo_signing_algorithm",
 	"identity_providers.oidc.clients[].authorization_policy",
 	"identity_providers.oidc.clients[].pre_configured_consent_duration",
+	"authentication_backend.password_reset.disable",
+	"authentication_backend.password_reset.custom_url",
+	"authentication_backend.refresh_interval",
+	"authentication_backend.file.path",
+	"authentication_backend.file.password.algorithm",
+	"authentication_backend.file.password.argon2.variant",
+	"authentication_backend.file.password.argon2.iterations",
+	"authentication_backend.file.password.argon2.memory",
+	"authentication_backend.file.password.argon2.parallelism",
+	"authentication_backend.file.password.argon2.key_length",
+	"authentication_backend.file.password.argon2.salt_length",
+	"authentication_backend.file.password.sha2crypt.variant",
+	"authentication_backend.file.password.sha2crypt.iterations",
+	"authentication_backend.file.password.sha2crypt.salt_length",
+	"authentication_backend.file.password.pbkdf2.variant",
+	"authentication_backend.file.password.pbkdf2.iterations",
+	"authentication_backend.file.password.pbkdf2.salt_length",
+	"authentication_backend.file.password.bcrypt.variant",
+	"authentication_backend.file.password.bcrypt.cost",
+	"authentication_backend.file.password.scrypt.iterations",
+	"authentication_backend.file.password.scrypt.block_size",
+	"authentication_backend.file.password.scrypt.parallelism",
+	"authentication_backend.file.password.scrypt.key_length",
+	"authentication_backend.file.password.scrypt.salt_length",
+	"authentication_backend.file.password.iterations",
+	"authentication_backend.file.password.memory",
+	"authentication_backend.file.password.parallelism",
+	"authentication_backend.file.password.key_length",
+	"authentication_backend.file.password.salt_length",
 	"authentication_backend.ldap.implementation",
 	"authentication_backend.ldap.url",
 	"authentication_backend.ldap.timeout",
@@ -67,16 +96,6 @@ var Keys = []string{
 	"authentication_backend.ldap.permit_feature_detection_failure",
 	"authentication_backend.ldap.user",
 	"authentication_backend.ldap.password",
-	"authentication_backend.file.path",
-	"authentication_backend.file.password.iterations",
-	"authentication_backend.file.password.key_length",
-	"authentication_backend.file.password.salt_length",
-	"authentication_backend.file.password.algorithm",
-	"authentication_backend.file.password.memory",
-	"authentication_backend.file.password.parallelism",
-	"authentication_backend.password_reset.disable",
-	"authentication_backend.password_reset.custom_url",
-	"authentication_backend.refresh_interval",
 	"session.name",
 	"session.domain",
 	"session.same_site",

internal/configuration/validator/access_control_test.go

@@ -62,7 +62,7 @@ func (suite *AccessControl) TestShouldValidateEitherDomainsOrDomainsRegex() {
 }
 
 func (suite *AccessControl) TestShouldRaiseErrorInvalidDefaultPolicy() {
-	suite.config.AccessControl.DefaultPolicy = testInvalidPolicy
+	suite.config.AccessControl.DefaultPolicy = testInvalid
 
 	ValidateAccessControl(suite.config, suite.validator)
 
@@ -135,7 +135,7 @@ func (suite *AccessControl) TestShouldRaiseErrorInvalidPolicy() {
 	suite.config.AccessControl.Rules = []schema.ACLRule{
 		{
 			Domains: []string{"public.example.com"},
-			Policy:  testInvalidPolicy,
+			Policy:  testInvalid,
 		},
 	}
 
@@ -183,7 +183,7 @@ func (suite *AccessControl) TestShouldRaiseErrorInvalidMethod() {
 
 func (suite *AccessControl) TestShouldRaiseErrorInvalidSubject() {
 	domains := []string{"public.example.com"}
-	subjects := [][]string{{"invalid"}}
+	subjects := [][]string{{testInvalid}}
 	suite.config.AccessControl.Rules = []schema.ACLRule{
 		{
 			Domains:  domains,

internal/configuration/validator/authentication.go

@@ -5,26 +5,18 @@ import (
 	"net/url"
 	"strings"
 
+	"github.com/go-crypt/crypt"
+
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
 	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // ValidateAuthenticationBackend validates and updates the authentication backend configuration.
-func ValidateAuthenticationBackend(config *schema.AuthenticationBackendConfiguration, validator *schema.StructValidator) {
+func ValidateAuthenticationBackend(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
 	if config.LDAP == nil && config.File == nil {
 		validator.Push(fmt.Errorf(errFmtAuthBackendNotConfigured))
 	}
 
-	if config.LDAP != nil && config.File != nil {
-		validator.Push(fmt.Errorf(errFmtAuthBackendMultipleConfigured))
-	}
-
-	if config.File != nil {
-		validateFileAuthenticationBackend(config.File, validator)
-	} else if config.LDAP != nil {
-		validateLDAPAuthenticationBackend(config, validator)
-	}
-
 	if config.RefreshInterval == "" {
 		config.RefreshInterval = schema.RefreshIntervalDefault
 	} else {
@@ -42,110 +34,306 @@ func ValidateAuthenticationBackend(config *schema.AuthenticationBackendConfigura
 			validator.Push(fmt.Errorf(errFmtAuthBackendPasswordResetCustomURLScheme, config.PasswordReset.CustomURL.String(), config.PasswordReset.CustomURL.Scheme))
 		}
 	}
+
+	if config.LDAP != nil && config.File != nil {
+		validator.Push(fmt.Errorf(errFmtAuthBackendMultipleConfigured))
+	}
+
+	if config.File != nil {
+		validateFileAuthenticationBackend(config.File, validator)
+	}
+
+	if config.LDAP != nil {
+		validateLDAPAuthenticationBackend(config, validator)
+	}
 }
 
 // validateFileAuthenticationBackend validates and updates the file authentication backend configuration.
-func validateFileAuthenticationBackend(config *schema.FileAuthenticationBackendConfiguration, validator *schema.StructValidator) {
+func validateFileAuthenticationBackend(config *schema.FileAuthenticationBackend, validator *schema.StructValidator) {
 	if config.Path == "" {
 		validator.Push(fmt.Errorf(errFmtFileAuthBackendPathNotConfigured))
 	}
 
-	if config.Password == nil {
-		config.Password = &schema.DefaultPasswordConfiguration
-	} else {
-		ValidatePasswordConfiguration(config.Password, validator)
-	}
+	ValidatePasswordConfiguration(&config.Password, validator)
 }
 
 // ValidatePasswordConfiguration validates the file auth backend password configuration.
-func ValidatePasswordConfiguration(config *schema.PasswordConfiguration, validator *schema.StructValidator) {
-	// Salt Length.
+func ValidatePasswordConfiguration(config *schema.Password, validator *schema.StructValidator) {
+	validateFileAuthenticationBackendPasswordConfigLegacy(config)
+
 	switch {
-	case config.SaltLength == 0:
-		config.SaltLength = schema.DefaultPasswordConfiguration.SaltLength
-	case config.SaltLength < 8:
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordSaltLength, config.SaltLength))
-	}
-
-	switch config.Algorithm {
-	case "":
-		config.Algorithm = schema.DefaultPasswordConfiguration.Algorithm
-		fallthrough
-	case hashArgon2id:
-		validateFileAuthenticationBackendArgon2id(config, validator)
-	case hashSHA512:
-		validateFileAuthenticationBackendSHA512(config)
+	case config.Algorithm == "":
+		config.Algorithm = schema.DefaultPasswordConfig.Algorithm
+	case utils.IsStringInSlice(config.Algorithm, validHashAlgorithms):
+		break
 	default:
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordUnknownAlg, config.Algorithm))
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordUnknownAlg, config.Algorithm, strings.Join(validHashAlgorithms, "', '")))
 	}
 
-	if config.Iterations < 1 {
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidIterations, config.Iterations))
+	validateFileAuthenticationBackendPasswordConfigArgon2(config, validator)
+	validateFileAuthenticationBackendPasswordConfigSHA2Crypt(config, validator)
+	validateFileAuthenticationBackendPasswordConfigPBKDF2(config, validator)
+	validateFileAuthenticationBackendPasswordConfigBCrypt(config, validator)
+	validateFileAuthenticationBackendPasswordConfigSCrypt(config, validator)
+}
+
+//nolint:gocyclo // Function is well formed.
+func validateFileAuthenticationBackendPasswordConfigArgon2(config *schema.Password, validator *schema.StructValidator) {
+	switch {
+	case config.Argon2.Variant == "":
+		config.Argon2.Variant = schema.DefaultPasswordConfig.Argon2.Variant
+	case utils.IsStringInSlice(config.Argon2.Variant, validArgon2Variants):
+		break
+	default:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashArgon2, config.Argon2.Variant, strings.Join(validArgon2Variants, "', '")))
+	}
+
+	switch {
+	case config.Argon2.Iterations == 0:
+		config.Argon2.Iterations = schema.DefaultPasswordConfig.Argon2.Iterations
+	case config.Argon2.Iterations < crypt.Argon2IterationsMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "iterations", config.Argon2.Iterations, crypt.Argon2IterationsMin))
+	case config.Argon2.Iterations > crypt.Argon2IterationsMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "iterations", config.Argon2.Iterations, crypt.Argon2IterationsMax))
+	}
+
+	switch {
+	case config.Argon2.Parallelism == 0:
+		config.Argon2.Parallelism = schema.DefaultPasswordConfig.Argon2.Parallelism
+	case config.Argon2.Parallelism < crypt.Argon2ParallelismMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "parallelism", config.Argon2.Parallelism, crypt.Argon2ParallelismMin))
+	case config.Argon2.Parallelism > crypt.Argon2ParallelismMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "parallelism", config.Argon2.Parallelism, crypt.Argon2ParallelismMax))
+	}
+
+	switch {
+	case config.Argon2.Memory == 0:
+		config.Argon2.Memory = schema.DefaultPasswordConfig.Argon2.Memory
+	case config.Argon2.Memory < 0:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "memory", config.Argon2.Parallelism, 1))
+	case config.Argon2.Memory < (crypt.Argon2MemoryMinParallelismMultiplier * config.Argon2.Parallelism):
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordArgon2MemoryTooLow, config.Argon2.Memory, config.Argon2.Parallelism*crypt.Argon2MemoryMinParallelismMultiplier, config.Argon2.Parallelism, crypt.Argon2MemoryMinParallelismMultiplier))
+	}
+
+	switch {
+	case config.Argon2.KeyLength == 0:
+		config.Argon2.KeyLength = schema.DefaultPasswordConfig.Argon2.KeyLength
+	case config.Argon2.KeyLength < crypt.Argon2KeySizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "key_length", config.Argon2.KeyLength, crypt.Argon2KeySizeMin))
+	case config.Argon2.KeyLength > crypt.Argon2KeySizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "key_length", config.Argon2.KeyLength, crypt.Argon2KeySizeMax))
+	}
+
+	switch {
+	case config.Argon2.SaltLength == 0:
+		config.Argon2.SaltLength = schema.DefaultPasswordConfig.Argon2.SaltLength
+	case config.Argon2.SaltLength < crypt.Argon2SaltSizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashArgon2, "salt_length", config.Argon2.SaltLength, crypt.Argon2SaltSizeMin))
+	case config.Argon2.SaltLength > crypt.Argon2SaltSizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashArgon2, "salt_length", config.Argon2.SaltLength, crypt.Argon2SaltSizeMax))
 	}
 }
 
-func validateFileAuthenticationBackendSHA512(config *schema.PasswordConfiguration) {
-	// Iterations (time).
-	if config.Iterations == 0 {
-		config.Iterations = schema.DefaultPasswordSHA512Configuration.Iterations
-	}
-}
-func validateFileAuthenticationBackendArgon2id(config *schema.PasswordConfiguration, validator *schema.StructValidator) {
-	// Iterations (time).
-	if config.Iterations == 0 {
-		config.Iterations = schema.DefaultPasswordConfiguration.Iterations
+func validateFileAuthenticationBackendPasswordConfigSHA2Crypt(config *schema.Password, validator *schema.StructValidator) {
+	switch {
+	case config.SHA2Crypt.Variant == "":
+		config.SHA2Crypt.Variant = schema.DefaultPasswordConfig.SHA2Crypt.Variant
+	case utils.IsStringInSlice(config.SHA2Crypt.Variant, validSHA2CryptVariants):
+		break
+	default:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashSHA2Crypt, config.SHA2Crypt.Variant, strings.Join(validSHA2CryptVariants, "', '")))
 	}
 
-	// Parallelism.
-	if config.Parallelism == 0 {
-		config.Parallelism = schema.DefaultPasswordConfiguration.Parallelism
-	} else if config.Parallelism < 1 {
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordArgon2idInvalidParallelism, config.Parallelism))
+	switch {
+	case config.SHA2Crypt.Iterations == 0:
+		config.SHA2Crypt.Iterations = schema.DefaultPasswordConfig.SHA2Crypt.Iterations
+	case config.SHA2Crypt.Iterations < crypt.SHA2CryptIterationsMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSHA2Crypt, "iterations", config.SHA2Crypt.Iterations, crypt.SHA2CryptIterationsMin))
+	case config.SHA2Crypt.Iterations > crypt.SHA2CryptIterationsMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSHA2Crypt, "iterations", config.SHA2Crypt.Iterations, crypt.SHA2CryptIterationsMax))
 	}
 
-	// Memory.
-	if config.Memory == 0 {
-		config.Memory = schema.DefaultPasswordConfiguration.Memory
-	} else if config.Memory < config.Parallelism*8 {
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordArgon2idInvalidMemory, config.Parallelism, config.Parallelism*8, config.Memory))
-	}
-
-	// Key Length.
-	if config.KeyLength == 0 {
-		config.KeyLength = schema.DefaultPasswordConfiguration.KeyLength
-	} else if config.KeyLength < 16 {
-		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordArgon2idInvalidKeyLength, config.KeyLength))
+	switch {
+	case config.SHA2Crypt.SaltLength == 0:
+		config.SHA2Crypt.SaltLength = schema.DefaultPasswordConfig.SHA2Crypt.SaltLength
+	case config.SHA2Crypt.SaltLength < crypt.SHA2CryptSaltSizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSHA2Crypt, "salt_length", config.SHA2Crypt.SaltLength, crypt.SHA2CryptSaltSizeMin))
+	case config.SHA2Crypt.SaltLength > crypt.SHA2CryptSaltSizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSHA2Crypt, "salt_length", config.SHA2Crypt.SaltLength, crypt.SHA2CryptSaltSizeMax))
 	}
 }
 
-func validateLDAPAuthenticationBackend(config *schema.AuthenticationBackendConfiguration, validator *schema.StructValidator) {
-	if config.LDAP.Timeout == 0 {
-		config.LDAP.Timeout = schema.DefaultLDAPAuthenticationBackendConfiguration.Timeout
+func validateFileAuthenticationBackendPasswordConfigPBKDF2(config *schema.Password, validator *schema.StructValidator) {
+	switch {
+	case config.PBKDF2.Variant == "":
+		config.PBKDF2.Variant = schema.DefaultPasswordConfig.PBKDF2.Variant
+	case utils.IsStringInSlice(config.PBKDF2.Variant, validPBKDF2Variants):
+		break
+	default:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashPBKDF2, config.PBKDF2.Variant, strings.Join(validPBKDF2Variants, "', '")))
 	}
 
+	switch {
+	case config.PBKDF2.Iterations == 0:
+		config.PBKDF2.Iterations = schema.DefaultPasswordConfig.PBKDF2.Iterations
+	case config.PBKDF2.Iterations < crypt.PBKDF2IterationsMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashPBKDF2, "iterations", config.PBKDF2.Iterations, crypt.PBKDF2IterationsMin))
+	case config.PBKDF2.Iterations > crypt.PBKDF2IterationsMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashPBKDF2, "iterations", config.PBKDF2.Iterations, crypt.PBKDF2IterationsMax))
+	}
+
+	switch {
+	case config.PBKDF2.SaltLength == 0:
+		config.PBKDF2.SaltLength = schema.DefaultPasswordConfig.PBKDF2.SaltLength
+	case config.PBKDF2.SaltLength < crypt.PBKDF2SaltSizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashPBKDF2, "salt_length", config.PBKDF2.SaltLength, crypt.PBKDF2SaltSizeMin))
+	case config.PBKDF2.SaltLength > crypt.PBKDF2SaltSizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashPBKDF2, "salt_length", config.PBKDF2.SaltLength, crypt.PBKDF2SaltSizeMax))
+	}
+}
+
+func validateFileAuthenticationBackendPasswordConfigBCrypt(config *schema.Password, validator *schema.StructValidator) {
+	switch {
+	case config.BCrypt.Variant == "":
+		config.BCrypt.Variant = schema.DefaultPasswordConfig.BCrypt.Variant
+	case utils.IsStringInSlice(config.BCrypt.Variant, validBCryptVariants):
+		break
+	default:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordInvalidVariant, hashBCrypt, config.BCrypt.Variant, strings.Join(validBCryptVariants, "', '")))
+	}
+
+	switch {
+	case config.BCrypt.Cost == 0:
+		config.BCrypt.Cost = schema.DefaultPasswordConfig.BCrypt.Cost
+	case config.BCrypt.Cost < crypt.BcryptCostMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashBCrypt, "cost", config.BCrypt.Cost, crypt.BcryptCostMin))
+	case config.BCrypt.Cost > crypt.BcryptCostMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashBCrypt, "cost", config.BCrypt.Cost, crypt.BcryptCostMax))
+	}
+}
+
+func validateFileAuthenticationBackendPasswordConfigSCrypt(config *schema.Password, validator *schema.StructValidator) {
+	switch {
+	case config.SCrypt.Iterations == 0:
+		config.SCrypt.Iterations = schema.DefaultPasswordConfig.SCrypt.Iterations
+	case config.SCrypt.Iterations < crypt.ScryptIterationsMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "iterations", config.SCrypt.Iterations, crypt.ScryptIterationsMin))
+	}
+
+	switch {
+	case config.SCrypt.BlockSize == 0:
+		config.SCrypt.BlockSize = schema.DefaultPasswordConfig.SCrypt.BlockSize
+	case config.SCrypt.BlockSize < crypt.ScryptBlockSizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "block_size", config.SCrypt.BlockSize, crypt.ScryptBlockSizeMin))
+	case config.SCrypt.BlockSize > crypt.ScryptBlockSizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "block_size", config.SCrypt.BlockSize, crypt.ScryptBlockSizeMax))
+	}
+
+	switch {
+	case config.SCrypt.Parallelism == 0:
+		config.SCrypt.Parallelism = schema.DefaultPasswordConfig.SCrypt.Parallelism
+	case config.SCrypt.Parallelism < crypt.ScryptParallelismMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "parallelism", config.SCrypt.Parallelism, crypt.ScryptParallelismMin))
+	}
+
+	switch {
+	case config.SCrypt.KeyLength == 0:
+		config.SCrypt.KeyLength = schema.DefaultPasswordConfig.SCrypt.KeyLength
+	case config.SCrypt.KeyLength < crypt.ScryptKeySizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "key_length", config.SCrypt.KeyLength, crypt.ScryptKeySizeMin))
+	case config.SCrypt.KeyLength > crypt.ScryptKeySizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "key_length", config.SCrypt.KeyLength, crypt.ScryptKeySizeMax))
+	}
+
+	switch {
+	case config.SCrypt.SaltLength == 0:
+		config.SCrypt.SaltLength = schema.DefaultPasswordConfig.SCrypt.SaltLength
+	case config.SCrypt.SaltLength < crypt.ScryptSaltSizeMin:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooSmall, hashSCrypt, "salt_length", config.SCrypt.SaltLength, crypt.ScryptSaltSizeMin))
+	case config.SCrypt.SaltLength > crypt.ScryptSaltSizeMax:
+		validator.Push(fmt.Errorf(errFmtFileAuthBackendPasswordOptionTooLarge, hashSCrypt, "salt_length", config.SCrypt.SaltLength, crypt.ScryptSaltSizeMax))
+	}
+}
+
+//nolint:gocyclo // Function is clear enough.
+func validateFileAuthenticationBackendPasswordConfigLegacy(config *schema.Password) {
+	switch config.Algorithm {
+	case hashLegacySHA512:
+		config.Algorithm = hashSHA2Crypt
+
+		if config.SHA2Crypt.Variant == "" {
+			config.SHA2Crypt.Variant = schema.DefaultPasswordConfig.SHA2Crypt.Variant
+		}
+
+		if config.Iterations > 0 && config.SHA2Crypt.Iterations == 0 {
+			config.SHA2Crypt.Iterations = config.Iterations
+		}
+
+		if config.SaltLength > 0 && config.SHA2Crypt.SaltLength == 0 {
+			if config.SaltLength > 16 {
+				config.SHA2Crypt.SaltLength = 16
+			} else {
+				config.SHA2Crypt.SaltLength = config.SaltLength
+			}
+		}
+	case hashLegacyArgon2id:
+		config.Algorithm = hashArgon2
+
+		if config.Argon2.Variant == "" {
+			config.Argon2.Variant = schema.DefaultPasswordConfig.Argon2.Variant
+		}
+
+		if config.Iterations > 0 && config.Argon2.Memory == 0 {
+			config.Argon2.Iterations = config.Iterations
+		}
+
+		if config.Memory > 0 && config.Argon2.Memory == 0 {
+			config.Argon2.Memory = config.Memory * 1024
+		}
+
+		if config.Parallelism > 0 && config.Argon2.Parallelism == 0 {
+			config.Argon2.Parallelism = config.Parallelism
+		}
+
+		if config.KeyLength > 0 && config.Argon2.KeyLength == 0 {
+			config.Argon2.KeyLength = config.KeyLength
+		}
+
+		if config.SaltLength > 0 && config.Argon2.SaltLength == 0 {
+			config.Argon2.SaltLength = config.SaltLength
+		}
+	}
+}
+
+func validateLDAPAuthenticationBackend(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
 	if config.LDAP.Implementation == "" {
-		config.LDAP.Implementation = schema.DefaultLDAPAuthenticationBackendConfiguration.Implementation
+		config.LDAP.Implementation = schema.LDAPImplementationCustom
 	}
 
-	if config.LDAP.TLS == nil {
-		config.LDAP.TLS = schema.DefaultLDAPAuthenticationBackendConfiguration.TLS
-	} else if config.LDAP.TLS.MinimumVersion == "" {
-		config.LDAP.TLS.MinimumVersion = schema.DefaultLDAPAuthenticationBackendConfiguration.TLS.MinimumVersion
-	}
-
-	if _, err := utils.TLSStringToTLSConfigVersion(config.LDAP.TLS.MinimumVersion); err != nil {
-		validator.Push(fmt.Errorf(errFmtLDAPAuthBackendTLSMinVersion, config.LDAP.TLS.MinimumVersion, err))
-	}
+	var implementation *schema.LDAPAuthenticationBackend
 
 	switch config.LDAP.Implementation {
 	case schema.LDAPImplementationCustom:
-		setDefaultImplementationCustomLDAPAuthenticationBackend(config.LDAP)
+		implementation = &schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom
 	case schema.LDAPImplementationActiveDirectory:
-		setDefaultImplementationActiveDirectoryLDAPAuthenticationBackend(config.LDAP)
+		implementation = &schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory
 	default:
 		validator.Push(fmt.Errorf(errFmtLDAPAuthBackendImplementation, config.LDAP.Implementation, strings.Join([]string{schema.LDAPImplementationCustom, schema.LDAPImplementationActiveDirectory}, "', '")))
 	}
 
+	if implementation != nil {
+		setDefaultImplementationLDAPAuthenticationBackendProfileMisc(config.LDAP, implementation)
+		setDefaultImplementationLDAPAuthenticationBackendProfileAttributes(config.LDAP, implementation)
+	}
+
+	if config.LDAP.TLS != nil {
+		if _, err := utils.TLSStringToTLSConfigVersion(config.LDAP.TLS.MinimumVersion); err != nil {
+			validator.Push(fmt.Errorf(errFmtLDAPAuthBackendTLSMinVersion, config.LDAP.TLS.MinimumVersion, err))
+		}
+	} else {
+		config.LDAP.TLS = &schema.TLSConfig{}
+	}
+
 	if strings.Contains(config.LDAP.UsersFilter, "{0}") {
 		validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterReplacedPlaceholders, "users_filter", "{0}", "{input}"))
 	}
@@ -167,7 +355,53 @@ func validateLDAPAuthenticationBackend(config *schema.AuthenticationBackendConfi
 	validateLDAPRequiredParameters(config, validator)
 }
 
-func validateLDAPAuthenticationBackendURL(config *schema.LDAPAuthenticationBackendConfiguration, validator *schema.StructValidator) {
+func setDefaultImplementationLDAPAuthenticationBackendProfileMisc(config *schema.LDAPAuthenticationBackend, implementation *schema.LDAPAuthenticationBackend) {
+	if config.Timeout == 0 {
+		config.Timeout = implementation.Timeout
+	}
+
+	if implementation.TLS == nil {
+		return
+	}
+
+	if config.TLS == nil {
+		config.TLS = implementation.TLS
+	} else if config.TLS.MinimumVersion == "" {
+		config.TLS.MinimumVersion = implementation.TLS.MinimumVersion
+	}
+}
+
+func ldapImplementationShouldSetStr(config, implementation string) bool {
+	return config == "" && implementation != ""
+}
+
+func setDefaultImplementationLDAPAuthenticationBackendProfileAttributes(config *schema.LDAPAuthenticationBackend, implementation *schema.LDAPAuthenticationBackend) {
+	if ldapImplementationShouldSetStr(config.UsersFilter, implementation.UsersFilter) {
+		config.UsersFilter = implementation.UsersFilter
+	}
+
+	if ldapImplementationShouldSetStr(config.UsernameAttribute, implementation.UsernameAttribute) {
+		config.UsernameAttribute = implementation.UsernameAttribute
+	}
+
+	if ldapImplementationShouldSetStr(config.DisplayNameAttribute, implementation.DisplayNameAttribute) {
+		config.DisplayNameAttribute = implementation.DisplayNameAttribute
+	}
+
+	if ldapImplementationShouldSetStr(config.MailAttribute, implementation.MailAttribute) {
+		config.MailAttribute = implementation.MailAttribute
+	}
+
+	if ldapImplementationShouldSetStr(config.GroupsFilter, implementation.GroupsFilter) {
+		config.GroupsFilter = implementation.GroupsFilter
+	}
+
+	if ldapImplementationShouldSetStr(config.GroupNameAttribute, implementation.GroupNameAttribute) {
+		config.GroupNameAttribute = implementation.GroupNameAttribute
+	}
+}
+
+func validateLDAPAuthenticationBackendURL(config *schema.LDAPAuthenticationBackend, validator *schema.StructValidator) {
 	var (
 		parsedURL *url.URL
 		err       error
@@ -191,7 +425,7 @@ func validateLDAPAuthenticationBackendURL(config *schema.LDAPAuthenticationBacke
 	}
 }
 
-func validateLDAPRequiredParameters(config *schema.AuthenticationBackendConfiguration, validator *schema.StructValidator) {
+func validateLDAPRequiredParameters(config *schema.AuthenticationBackend, validator *schema.StructValidator) {
 	if config.LDAP.PermitUnauthenticatedBind {
 		if config.LDAP.Password != "" {
 			validator.Push(fmt.Errorf(errFmtLDAPAuthBackendUnauthenticatedBindWithPassword))
@@ -237,47 +471,3 @@ func validateLDAPRequiredParameters(config *schema.AuthenticationBackendConfigur
 		validator.Push(fmt.Errorf(errFmtLDAPAuthBackendFilterEnclosingParenthesis, "groups_filter", config.LDAP.GroupsFilter, config.LDAP.GroupsFilter))
 	}
 }
-
-func setDefaultImplementationActiveDirectoryLDAPAuthenticationBackend(config *schema.LDAPAuthenticationBackendConfiguration) {
-	if config.UsersFilter == "" {
-		config.UsersFilter = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsersFilter
-	}
-
-	if config.UsernameAttribute == "" {
-		config.UsernameAttribute = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsernameAttribute
-	}
-
-	if config.DisplayNameAttribute == "" {
-		config.DisplayNameAttribute = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.DisplayNameAttribute
-	}
-
-	if config.MailAttribute == "" {
-		config.MailAttribute = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.MailAttribute
-	}
-
-	if config.GroupsFilter == "" {
-		config.GroupsFilter = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupsFilter
-	}
-
-	if config.GroupNameAttribute == "" {
-		config.GroupNameAttribute = schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupNameAttribute
-	}
-}
-
-func setDefaultImplementationCustomLDAPAuthenticationBackend(config *schema.LDAPAuthenticationBackendConfiguration) {
-	if config.UsernameAttribute == "" {
-		config.UsernameAttribute = schema.DefaultLDAPAuthenticationBackendConfiguration.UsernameAttribute
-	}
-
-	if config.GroupNameAttribute == "" {
-		config.GroupNameAttribute = schema.DefaultLDAPAuthenticationBackendConfiguration.GroupNameAttribute
-	}
-
-	if config.MailAttribute == "" {
-		config.MailAttribute = schema.DefaultLDAPAuthenticationBackendConfiguration.MailAttribute
-	}
-
-	if config.DisplayNameAttribute == "" {
-		config.DisplayNameAttribute = schema.DefaultLDAPAuthenticationBackendConfiguration.DisplayNameAttribute
-	}
-}

internal/configuration/validator/authentication_test.go

@@ -14,22 +14,28 @@ import (
 
 func TestShouldRaiseErrorWhenBothBackendsProvided(t *testing.T) {
 	validator := schema.NewStructValidator()
-	backendConfig := schema.AuthenticationBackendConfiguration{}
+	backendConfig := schema.AuthenticationBackend{}
 
-	backendConfig.LDAP = &schema.LDAPAuthenticationBackendConfiguration{}
-	backendConfig.File = &schema.FileAuthenticationBackendConfiguration{
+	backendConfig.LDAP = &schema.LDAPAuthenticationBackend{}
+	backendConfig.File = &schema.FileAuthenticationBackend{
 		Path: "/tmp",
 	}
 
 	ValidateAuthenticationBackend(&backendConfig, validator)
 
-	require.Len(t, validator.Errors(), 1)
+	require.Len(t, validator.Errors(), 7)
 	assert.EqualError(t, validator.Errors()[0], "authentication_backend: please ensure only one of the 'file' or 'ldap' backend is configured")
+	assert.EqualError(t, validator.Errors()[1], "authentication_backend: ldap: option 'url' is required")
+	assert.EqualError(t, validator.Errors()[2], "authentication_backend: ldap: option 'user' is required")
+	assert.EqualError(t, validator.Errors()[3], "authentication_backend: ldap: option 'password' is required")
+	assert.EqualError(t, validator.Errors()[4], "authentication_backend: ldap: option 'base_dn' is required")
+	assert.EqualError(t, validator.Errors()[5], "authentication_backend: ldap: option 'users_filter' is required")
+	assert.EqualError(t, validator.Errors()[6], "authentication_backend: ldap: option 'groups_filter' is required")
 }
 
 func TestShouldRaiseErrorWhenNoBackendProvided(t *testing.T) {
 	validator := schema.NewStructValidator()
-	backendConfig := schema.AuthenticationBackendConfiguration{}
+	backendConfig := schema.AuthenticationBackend{}
 
 	ValidateAuthenticationBackend(&backendConfig, validator)
 
@@ -39,23 +45,18 @@ func TestShouldRaiseErrorWhenNoBackendProvided(t *testing.T) {
 
 type FileBasedAuthenticationBackend struct {
 	suite.Suite
-	config    schema.AuthenticationBackendConfiguration
+	config    schema.AuthenticationBackend
 	validator *schema.StructValidator
 }
 
 func (suite *FileBasedAuthenticationBackend) SetupTest() {
+	password := schema.DefaultPasswordConfig
+
 	suite.validator = schema.NewStructValidator()
-	suite.config = schema.AuthenticationBackendConfiguration{}
-	suite.config.File = &schema.FileAuthenticationBackendConfiguration{Path: "/a/path", Password: &schema.PasswordConfiguration{
-		Algorithm:   schema.DefaultPasswordConfiguration.Algorithm,
-		Iterations:  schema.DefaultPasswordConfiguration.Iterations,
-		Parallelism: schema.DefaultPasswordConfiguration.Parallelism,
-		Memory:      schema.DefaultPasswordConfiguration.Memory,
-		KeyLength:   schema.DefaultPasswordConfiguration.KeyLength,
-		SaltLength:  schema.DefaultPasswordConfiguration.SaltLength,
-	}}
-	suite.config.File.Password.Algorithm = schema.DefaultPasswordConfiguration.Algorithm
+	suite.config = schema.AuthenticationBackend{}
+	suite.config.File = &schema.FileAuthenticationBackend{Path: "/a/path", Password: password}
 }
+
 func (suite *FileBasedAuthenticationBackend) TestShouldValidateCompleteConfiguration() {
 	ValidateAuthenticationBackend(&suite.config, suite.validator)
 
@@ -74,20 +75,8 @@ func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenNoPathProvi
 	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: option 'path' is required")
 }
 
-func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenMemoryNotMoreThanEightTimesParallelism() {
-	suite.config.File.Password.Memory = 8
-	suite.config.File.Password.Parallelism = 2
-
-	ValidateAuthenticationBackend(&suite.config, suite.validator)
-
-	suite.Assert().Len(suite.validator.Warnings(), 0)
-	suite.Require().Len(suite.validator.Errors(), 1)
-
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'memory' must at least be parallelism multiplied by 8 when using algorithm 'argon2id' with parallelism 2 it should be at least 16 but it is configured as '8'")
-}
-
 func (suite *FileBasedAuthenticationBackend) TestShouldSetDefaultConfigurationWhenBlank() {
-	suite.config.File.Password = &schema.PasswordConfiguration{}
+	suite.config.File.Password = schema.Password{}
 
 	suite.Assert().Equal(0, suite.config.File.Password.KeyLength)
 	suite.Assert().Equal(0, suite.config.File.Password.Iterations)
@@ -101,51 +90,384 @@ func (suite *FileBasedAuthenticationBackend) TestShouldSetDefaultConfigurationWh
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Assert().Len(suite.validator.Errors(), 0)
 
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.KeyLength, suite.config.File.Password.KeyLength)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Iterations, suite.config.File.Password.Iterations)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.SaltLength, suite.config.File.Password.SaltLength)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Algorithm, suite.config.File.Password.Algorithm)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Memory, suite.config.File.Password.Memory)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Parallelism, suite.config.File.Password.Parallelism)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.KeyLength, suite.config.File.Password.KeyLength)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Iterations, suite.config.File.Password.Iterations)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.SaltLength, suite.config.File.Password.SaltLength)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Algorithm, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Memory, suite.config.File.Password.Memory)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Parallelism, suite.config.File.Password.Parallelism)
 }
 
-func (suite *FileBasedAuthenticationBackend) TestShouldSetDefaultConfigurationWhenOnlySHA512Set() {
-	suite.config.File.Password = &schema.PasswordConfiguration{}
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationSHA512() {
+	suite.config.File.Password = schema.Password{}
 	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
-	suite.config.File.Password.Algorithm = "sha512"
+
+	suite.config.File.Password = schema.Password{
+		Algorithm:  digestSHA512,
+		Iterations: 1000000,
+		SaltLength: 8,
+	}
 
 	ValidateAuthenticationBackend(&suite.config, suite.validator)
 
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Assert().Len(suite.validator.Errors(), 0)
 
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.KeyLength, suite.config.File.Password.KeyLength)
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.Iterations, suite.config.File.Password.Iterations)
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.SaltLength, suite.config.File.Password.SaltLength)
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.Algorithm, suite.config.File.Password.Algorithm)
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.Memory, suite.config.File.Password.Memory)
-	suite.Assert().Equal(schema.DefaultPasswordSHA512Configuration.Parallelism, suite.config.File.Password.Parallelism)
+	suite.Assert().Equal(hashSHA2Crypt, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(digestSHA512, suite.config.File.Password.SHA2Crypt.Variant)
+	suite.Assert().Equal(1000000, suite.config.File.Password.SHA2Crypt.Iterations)
+	suite.Assert().Equal(8, suite.config.File.Password.SHA2Crypt.SaltLength)
 }
-func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenKeyLengthTooLow() {
-	suite.config.File.Password.KeyLength = 1
+
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationSHA512ButNotOverride() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+
+	suite.config.File.Password = schema.Password{
+		Algorithm:  digestSHA512,
+		Iterations: 1000000,
+		SaltLength: 8,
+		SHA2Crypt: schema.SHA2CryptPassword{
+			Variant:    digestSHA256,
+			Iterations: 50000,
+			SaltLength: 12,
+		},
+	}
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+
+	suite.Assert().Equal(hashSHA2Crypt, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(digestSHA256, suite.config.File.Password.SHA2Crypt.Variant)
+	suite.Assert().Equal(50000, suite.config.File.Password.SHA2Crypt.Iterations)
+	suite.Assert().Equal(12, suite.config.File.Password.SHA2Crypt.SaltLength)
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationSHA512Alt() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+
+	suite.config.File.Password = schema.Password{
+		Algorithm:  digestSHA512,
+		Iterations: 1000000,
+		SaltLength: 64,
+	}
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+
+	suite.Assert().Equal(hashSHA2Crypt, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(digestSHA512, suite.config.File.Password.SHA2Crypt.Variant)
+	suite.Assert().Equal(1000000, suite.config.File.Password.SHA2Crypt.Iterations)
+	suite.Assert().Equal(16, suite.config.File.Password.SHA2Crypt.SaltLength)
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationArgon2() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+
+	suite.config.File.Password = schema.Password{
+		Algorithm:   "argon2id",
+		Iterations:  4,
+		Memory:      1024,
+		Parallelism: 4,
+		KeyLength:   64,
+		SaltLength:  64,
+	}
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+
+	suite.Assert().Equal("argon2", suite.config.File.Password.Algorithm)
+	suite.Assert().Equal("argon2id", suite.config.File.Password.Argon2.Variant)
+	suite.Assert().Equal(4, suite.config.File.Password.Argon2.Iterations)
+	suite.Assert().Equal(1048576, suite.config.File.Password.Argon2.Memory)
+	suite.Assert().Equal(4, suite.config.File.Password.Argon2.Parallelism)
+	suite.Assert().Equal(64, suite.config.File.Password.Argon2.KeyLength)
+	suite.Assert().Equal(64, suite.config.File.Password.Argon2.SaltLength)
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationArgon2ButNotOverride() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+
+	suite.config.File.Password = schema.Password{
+		Algorithm:   "argon2id",
+		Iterations:  4,
+		Memory:      1024,
+		Parallelism: 4,
+		KeyLength:   64,
+		SaltLength:  64,
+		Argon2: schema.Argon2Password{
+			Variant:     "argon2d",
+			Iterations:  1,
+			Memory:      2048,
+			Parallelism: 1,
+			KeyLength:   32,
+			SaltLength:  32,
+		},
+	}
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+
+	suite.Assert().Equal("argon2", suite.config.File.Password.Algorithm)
+	suite.Assert().Equal("argon2d", suite.config.File.Password.Argon2.Variant)
+	suite.Assert().Equal(1, suite.config.File.Password.Argon2.Iterations)
+	suite.Assert().Equal(2048, suite.config.File.Password.Argon2.Memory)
+	suite.Assert().Equal(1, suite.config.File.Password.Argon2.Parallelism)
+	suite.Assert().Equal(32, suite.config.File.Password.Argon2.KeyLength)
+	suite.Assert().Equal(32, suite.config.File.Password.Argon2.SaltLength)
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldMigrateLegacyConfigurationWhenOnlySHA512Set() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = digestSHA512
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+
+	suite.Assert().Equal(hashSHA2Crypt, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(digestSHA512, suite.config.File.Password.SHA2Crypt.Variant)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.SHA2Crypt.Iterations, suite.config.File.Password.SHA2Crypt.Iterations)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.SHA2Crypt.SaltLength, suite.config.File.Password.SHA2Crypt.SaltLength)
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorOnInvalidArgon2Variant() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = "argon2"
+	suite.config.File.Password.Argon2.Variant = testInvalid
 
 	ValidateAuthenticationBackend(&suite.config, suite.validator)
 
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Require().Len(suite.validator.Errors(), 1)
 
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'key_length' must be 16 or more when using algorithm 'argon2id' but it is configured as '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: argon2: option 'variant' is configured as 'invalid' but must be one of the following values: 'argon2id', 'id', 'argon2i', 'i', 'argon2d', 'd'")
 }
 
-func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenSaltLengthTooLow() {
-	suite.config.File.Password.SaltLength = -1
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorOnInvalidSHA2CryptVariant() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = hashSHA2Crypt
+	suite.config.File.Password.SHA2Crypt.Variant = testInvalid
 
 	ValidateAuthenticationBackend(&suite.config, suite.validator)
 
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Require().Len(suite.validator.Errors(), 1)
 
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'salt_length' must be 2 or more but it is configured a '-1'")
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: sha2crypt: option 'variant' is configured as 'invalid' but must be one of the following values: 'sha256', 'sha512'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorOnInvalidSHA2CryptSaltLength() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = hashSHA2Crypt
+	suite.config.File.Password.SHA2Crypt.SaltLength = 40
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: sha2crypt: option 'salt_length' is configured as '40' but must be less than or equal to '16'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorOnInvalidPBKDF2Variant() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = "pbkdf2"
+	suite.config.File.Password.PBKDF2.Variant = testInvalid
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: pbkdf2: option 'variant' is configured as 'invalid' but must be one of the following values: 'sha1', 'sha224', 'sha256', 'sha384', 'sha512'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorOnInvalidBCryptVariant() {
+	suite.config.File.Password = schema.Password{}
+	suite.Assert().Equal("", suite.config.File.Password.Algorithm)
+	suite.config.File.Password.Algorithm = "bcrypt"
+	suite.config.File.Password.BCrypt.Variant = testInvalid
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: bcrypt: option 'variant' is configured as 'invalid' but must be one of the following values: 'standard', 'sha256'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenSHA2CryptOptionsTooLow() {
+	suite.config.File.Password.SHA2Crypt.Iterations = -1
+	suite.config.File.Password.SHA2Crypt.SaltLength = -1
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 2)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: sha2crypt: option 'iterations' is configured as '-1' but must be greater than or equal to '1000'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: sha2crypt: option 'salt_length' is configured as '-1' but must be greater than or equal to '1'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenSHA2CryptOptionsTooHigh() {
+	suite.config.File.Password.SHA2Crypt.Iterations = 999999999999
+	suite.config.File.Password.SHA2Crypt.SaltLength = 99
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 2)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: sha2crypt: option 'iterations' is configured as '999999999999' but must be less than or equal to '999999999'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: sha2crypt: option 'salt_length' is configured as '99' but must be less than or equal to '16'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenPBKDF2OptionsTooLow() {
+	suite.config.File.Password.PBKDF2.Iterations = -1
+	suite.config.File.Password.PBKDF2.SaltLength = -1
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 2)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: pbkdf2: option 'iterations' is configured as '-1' but must be greater than or equal to '100000'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: pbkdf2: option 'salt_length' is configured as '-1' but must be greater than or equal to '8'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenPBKDF2OptionsTooHigh() {
+	suite.config.File.Password.PBKDF2.Iterations = 2147483649
+	suite.config.File.Password.PBKDF2.SaltLength = 2147483650
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 2)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: pbkdf2: option 'iterations' is configured as '2147483649' but must be less than or equal to '2147483647'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: pbkdf2: option 'salt_length' is configured as '2147483650' but must be less than or equal to '2147483647'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenBCryptOptionsTooLow() {
+	suite.config.File.Password.BCrypt.Cost = -1
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: bcrypt: option 'cost' is configured as '-1' but must be greater than or equal to '10'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenBCryptOptionsTooHigh() {
+	suite.config.File.Password.BCrypt.Cost = 900
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: bcrypt: option 'cost' is configured as '900' but must be less than or equal to '31'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenSCryptOptionsTooLow() {
+	suite.config.File.Password.SCrypt.Iterations = -1
+	suite.config.File.Password.SCrypt.BlockSize = -21
+	suite.config.File.Password.SCrypt.Parallelism = -11
+	suite.config.File.Password.SCrypt.KeyLength = -77
+	suite.config.File.Password.SCrypt.SaltLength = 7
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 5)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: scrypt: option 'iterations' is configured as '-1' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: scrypt: option 'block_size' is configured as '-21' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[2], "authentication_backend: file: password: scrypt: option 'parallelism' is configured as '-11' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[3], "authentication_backend: file: password: scrypt: option 'key_length' is configured as '-77' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[4], "authentication_backend: file: password: scrypt: option 'salt_length' is configured as '7' but must be greater than or equal to '8'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenSCryptOptionsTooHigh() {
+	suite.config.File.Password.SCrypt.BlockSize = 360287970189639672
+	suite.config.File.Password.SCrypt.KeyLength = 1374389534409
+	suite.config.File.Password.SCrypt.SaltLength = 2147483647
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 3)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: scrypt: option 'block_size' is configured as '360287970189639672' but must be less than or equal to '36028797018963967'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: scrypt: option 'key_length' is configured as '1374389534409' but must be less than or equal to '137438953440'")
+	suite.Assert().EqualError(suite.validator.Errors()[2], "authentication_backend: file: password: scrypt: option 'salt_length' is configured as '2147483647' but must be less than or equal to '1024'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenArgon2OptionsTooLow() {
+	suite.config.File.Password.Argon2.Iterations = -1
+	suite.config.File.Password.Argon2.Memory = -1
+	suite.config.File.Password.Argon2.Parallelism = -1
+	suite.config.File.Password.Argon2.KeyLength = 1
+	suite.config.File.Password.Argon2.SaltLength = -1
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 5)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: argon2: option 'iterations' is configured as '-1' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: argon2: option 'parallelism' is configured as '-1' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[2], "authentication_backend: file: password: argon2: option 'memory' is configured as '-1' but must be greater than or equal to '1'")
+	suite.Assert().EqualError(suite.validator.Errors()[3], "authentication_backend: file: password: argon2: option 'key_length' is configured as '1' but must be greater than or equal to '4'")
+	suite.Assert().EqualError(suite.validator.Errors()[4], "authentication_backend: file: password: argon2: option 'salt_length' is configured as '-1' but must be greater than or equal to '1'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenArgon2OptionsTooHigh() {
+	suite.config.File.Password.Argon2.Iterations = 9999999999
+	suite.config.File.Password.Argon2.Parallelism = 16777216
+	suite.config.File.Password.Argon2.KeyLength = 9999999998
+	suite.config.File.Password.Argon2.SaltLength = 9999999997
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 5)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: argon2: option 'iterations' is configured as '9999999999' but must be less than or equal to '2147483647'")
+	suite.Assert().EqualError(suite.validator.Errors()[1], "authentication_backend: file: password: argon2: option 'parallelism' is configured as '16777216' but must be less than or equal to '16777215'")
+	suite.Assert().EqualError(suite.validator.Errors()[3], "authentication_backend: file: password: argon2: option 'key_length' is configured as '9999999998' but must be less than or equal to '2147483647'")
+	suite.Assert().EqualError(suite.validator.Errors()[4], "authentication_backend: file: password: argon2: option 'salt_length' is configured as '9999999997' but must be less than or equal to '2147483647'")
+}
+
+func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenArgon2MemoryTooLow() {
+	suite.config.File.Password.Argon2.Memory = 4
+	suite.config.File.Password.Argon2.Parallelism = 4
+
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Require().Len(suite.validator.Errors(), 1)
+
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: argon2: option 'memory' is configured as '4' but must be greater than or equal to '32' or '4' (the value of 'parallelism) multiplied by '8'")
 }
 
 func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenBadAlgorithmDefined() {
@@ -156,29 +478,7 @@ func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenBadAlgorith
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Require().Len(suite.validator.Errors(), 1)
 
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'algorithm' must be either 'argon2id' or 'sha512' but it is configured as 'bogus'")
-}
-
-func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenIterationsTooLow() {
-	suite.config.File.Password.Iterations = -1
-
-	ValidateAuthenticationBackend(&suite.config, suite.validator)
-
-	suite.Assert().Len(suite.validator.Warnings(), 0)
-	suite.Require().Len(suite.validator.Errors(), 1)
-
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'iterations' must be 1 or more but it is configured as '-1'")
-}
-
-func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenParallelismTooLow() {
-	suite.config.File.Password.Parallelism = -1
-
-	ValidateAuthenticationBackend(&suite.config, suite.validator)
-
-	suite.Assert().Len(suite.validator.Warnings(), 0)
-	suite.Require().Len(suite.validator.Errors(), 1)
-
-	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'parallelism' must be 1 or more when using algorithm 'argon2id' but it is configured as '-1'")
+	suite.Assert().EqualError(suite.validator.Errors()[0], "authentication_backend: file: password: option 'algorithm' is configured as 'bogus' but must be one of the following values: 'sha2crypt', 'pbkdf2', 'scrypt', 'bcrypt', 'argon2'")
 }
 
 func (suite *FileBasedAuthenticationBackend) TestShouldSetDefaultValues() {
@@ -193,42 +493,11 @@ func (suite *FileBasedAuthenticationBackend) TestShouldSetDefaultValues() {
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Assert().Len(suite.validator.Errors(), 0)
 
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Algorithm, suite.config.File.Password.Algorithm)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Iterations, suite.config.File.Password.Iterations)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.SaltLength, suite.config.File.Password.SaltLength)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Memory, suite.config.File.Password.Memory)
-	suite.Assert().Equal(schema.DefaultPasswordConfiguration.Parallelism, suite.config.File.Password.Parallelism)
-}
-
-func TestFileBasedAuthenticationBackend(t *testing.T) {
-	suite.Run(t, new(FileBasedAuthenticationBackend))
-}
-
-type LDAPAuthenticationBackendSuite struct {
-	suite.Suite
-	config    schema.AuthenticationBackendConfiguration
-	validator *schema.StructValidator
-}
-
-func (suite *LDAPAuthenticationBackendSuite) SetupTest() {
-	suite.validator = schema.NewStructValidator()
-	suite.config = schema.AuthenticationBackendConfiguration{}
-	suite.config.LDAP = &schema.LDAPAuthenticationBackendConfiguration{}
-	suite.config.LDAP.Implementation = schema.LDAPImplementationCustom
-	suite.config.LDAP.URL = testLDAPURL
-	suite.config.LDAP.User = testLDAPUser
-	suite.config.LDAP.Password = testLDAPPassword
-	suite.config.LDAP.BaseDN = testLDAPBaseDN
-	suite.config.LDAP.UsernameAttribute = "uid"
-	suite.config.LDAP.UsersFilter = "({username_attribute}={input})"
-	suite.config.LDAP.GroupsFilter = "(cn={input})"
-}
-
-func (suite *LDAPAuthenticationBackendSuite) TestShouldValidateCompleteConfiguration() {
-	ValidateAuthenticationBackend(&suite.config, suite.validator)
-
-	suite.Assert().Len(suite.validator.Warnings(), 0)
-	suite.Assert().Len(suite.validator.Errors(), 0)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Algorithm, suite.config.File.Password.Algorithm)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Iterations, suite.config.File.Password.Iterations)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.SaltLength, suite.config.File.Password.SaltLength)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Memory, suite.config.File.Password.Memory)
+	suite.Assert().Equal(schema.DefaultPasswordConfig.Parallelism, suite.config.File.Password.Parallelism)
 }
 
 func (suite *FileBasedAuthenticationBackend) TestShouldRaiseErrorWhenResetURLIsInvalid() {
@@ -270,6 +539,37 @@ func (suite *FileBasedAuthenticationBackend) TestShouldConfigureDisableResetPass
 	suite.Assert().False(suite.config.PasswordReset.Disable)
 }
 
+func TestFileBasedAuthenticationBackend(t *testing.T) {
+	suite.Run(t, new(FileBasedAuthenticationBackend))
+}
+
+type LDAPAuthenticationBackendSuite struct {
+	suite.Suite
+	config    schema.AuthenticationBackend
+	validator *schema.StructValidator
+}
+
+func (suite *LDAPAuthenticationBackendSuite) SetupTest() {
+	suite.validator = schema.NewStructValidator()
+	suite.config = schema.AuthenticationBackend{}
+	suite.config.LDAP = &schema.LDAPAuthenticationBackend{}
+	suite.config.LDAP.Implementation = schema.LDAPImplementationCustom
+	suite.config.LDAP.URL = testLDAPURL
+	suite.config.LDAP.User = testLDAPUser
+	suite.config.LDAP.Password = testLDAPPassword
+	suite.config.LDAP.BaseDN = testLDAPBaseDN
+	suite.config.LDAP.UsernameAttribute = "uid"
+	suite.config.LDAP.UsersFilter = "({username_attribute}={input})"
+	suite.config.LDAP.GroupsFilter = "(cn={input})"
+}
+
+func (suite *LDAPAuthenticationBackendSuite) TestShouldValidateCompleteConfiguration() {
+	ValidateAuthenticationBackend(&suite.config, suite.validator)
+
+	suite.Assert().Len(suite.validator.Warnings(), 0)
+	suite.Assert().Len(suite.validator.Errors(), 0)
+}
+
 func (suite *LDAPAuthenticationBackendSuite) TestShouldValidateDefaultImplementationAndUsernameAttribute() {
 	suite.config.LDAP.Implementation = ""
 	suite.config.LDAP.UsernameAttribute = ""
@@ -277,7 +577,7 @@ func (suite *LDAPAuthenticationBackendSuite) TestShouldValidateDefaultImplementa
 
 	suite.Assert().Equal(schema.LDAPImplementationCustom, suite.config.LDAP.Implementation)
 
-	suite.Assert().Equal(suite.config.LDAP.UsernameAttribute, schema.DefaultLDAPAuthenticationBackendConfiguration.UsernameAttribute)
+	suite.Assert().Equal(suite.config.LDAP.UsernameAttribute, schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.UsernameAttribute)
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Assert().Len(suite.validator.Errors(), 0)
 }
@@ -490,7 +790,7 @@ func (suite *LDAPAuthenticationBackendSuite) TestShouldSetDefaultTLSMinimumVersi
 	suite.Assert().Len(suite.validator.Warnings(), 0)
 	suite.Assert().Len(suite.validator.Errors(), 0)
 
-	suite.Assert().Equal(schema.DefaultLDAPAuthenticationBackendConfiguration.TLS.MinimumVersion, suite.config.LDAP.TLS.MinimumVersion)
+	suite.Assert().Equal(schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.TLS.MinimumVersion, suite.config.LDAP.TLS.MinimumVersion)
 }
 
 func (suite *LDAPAuthenticationBackendSuite) TestShouldNotAllowInvalidTLSValue() {
@@ -512,20 +812,20 @@ func TestLdapAuthenticationBackend(t *testing.T) {
 
 type ActiveDirectoryAuthenticationBackendSuite struct {
 	suite.Suite
-	config    schema.AuthenticationBackendConfiguration
+	config    schema.AuthenticationBackend
 	validator *schema.StructValidator
 }
 
 func (suite *ActiveDirectoryAuthenticationBackendSuite) SetupTest() {
 	suite.validator = schema.NewStructValidator()
-	suite.config = schema.AuthenticationBackendConfiguration{}
-	suite.config.LDAP = &schema.LDAPAuthenticationBackendConfiguration{}
+	suite.config = schema.AuthenticationBackend{}
+	suite.config.LDAP = &schema.LDAPAuthenticationBackend{}
 	suite.config.LDAP.Implementation = schema.LDAPImplementationActiveDirectory
 	suite.config.LDAP.URL = testLDAPURL
 	suite.config.LDAP.User = testLDAPUser
 	suite.config.LDAP.Password = testLDAPPassword
 	suite.config.LDAP.BaseDN = testLDAPBaseDN
-	suite.config.LDAP.TLS = schema.DefaultLDAPAuthenticationBackendConfiguration.TLS
+	suite.config.LDAP.TLS = schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.TLS
 }
 
 func (suite *ActiveDirectoryAuthenticationBackendSuite) TestShouldSetActiveDirectoryDefaults() {
@@ -535,25 +835,25 @@ func (suite *ActiveDirectoryAuthenticationBackendSuite) TestShouldSetActiveDirec
 	suite.Assert().Len(suite.validator.Errors(), 0)
 
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendConfiguration.Timeout,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.Timeout,
 		suite.config.LDAP.Timeout)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsersFilter,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.UsersFilter,
 		suite.config.LDAP.UsersFilter)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsernameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.UsernameAttribute,
 		suite.config.LDAP.UsernameAttribute)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.DisplayNameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.DisplayNameAttribute,
 		suite.config.LDAP.DisplayNameAttribute)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.MailAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.MailAttribute,
 		suite.config.LDAP.MailAttribute)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupsFilter,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.GroupsFilter,
 		suite.config.LDAP.GroupsFilter)
 	suite.Assert().Equal(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupNameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.GroupNameAttribute,
 		suite.config.LDAP.GroupNameAttribute)
 }
 
@@ -569,25 +869,25 @@ func (suite *ActiveDirectoryAuthenticationBackendSuite) TestShouldOnlySetDefault
 	ValidateAuthenticationBackend(&suite.config, suite.validator)
 
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendConfiguration.Timeout,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationCustom.Timeout,
 		suite.config.LDAP.Timeout)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsersFilter,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.UsersFilter,
 		suite.config.LDAP.UsersFilter)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.UsernameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.UsernameAttribute,
 		suite.config.LDAP.UsernameAttribute)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.DisplayNameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.DisplayNameAttribute,
 		suite.config.LDAP.DisplayNameAttribute)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.MailAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.MailAttribute,
 		suite.config.LDAP.MailAttribute)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupsFilter,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.GroupsFilter,
 		suite.config.LDAP.GroupsFilter)
 	suite.Assert().NotEqual(
-		schema.DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration.GroupNameAttribute,
+		schema.DefaultLDAPAuthenticationBackendConfigurationImplementationActiveDirectory.GroupNameAttribute,
 		suite.config.LDAP.GroupNameAttribute)
 }
 

internal/configuration/validator/configuration_test.go

@@ -18,7 +18,7 @@ func newDefaultConfig() schema.Configuration {
 	config.Log.Level = "info"
 	config.Log.Format = "text"
 	config.JWTSecret = testJWTSecret
-	config.AuthenticationBackend.File = &schema.FileAuthenticationBackendConfiguration{
+	config.AuthenticationBackend.File = &schema.FileAuthenticationBackend{
 		Path: "/a/path",
 	}
 	config.AccessControl = schema.AccessControlConfiguration{

internal/configuration/validator/const.go

@@ -21,10 +21,24 @@ const (
 	policyDeny      = "deny"
 )
 
+const (
+	digestSHA1   = "sha1"
+	digestSHA224 = "sha224"
+	digestSHA256 = "sha256"
+	digestSHA384 = "sha384"
+	digestSHA512 = "sha512"
+)
+
 // Hashing constants.
 const (
-	hashArgon2id = "argon2id"
-	hashSHA512   = "sha512"
+	hashLegacyArgon2id = "argon2id"
+	hashLegacySHA512   = digestSHA512
+
+	hashArgon2    = "argon2"
+	hashSHA2Crypt = "sha2crypt"
+	hashPBKDF2    = "pbkdf2"
+	hashSCrypt    = "scrypt"
+	hashBCrypt    = "bcrypt"
 )
 
 // Scheme constants.
@@ -35,18 +49,6 @@ const (
 	schemeHTTPS = "https"
 )
 
-// Test constants.
-const (
-	testInvalidPolicy = "invalid"
-	testJWTSecret     = "a_secret"
-	testLDAPBaseDN    = "base_dn"
-	testLDAPPassword  = "password"
-	testLDAPURL       = "ldap://ldap"
-	testLDAPUser      = "user"
-	testModeDisabled  = "disable"
-	testEncryptionKey = "a_not_so_secure_encryption_key"
-)
-
 // Notifier Error constants.
 const (
 	errFmtNotifierMultipleConfigured = "notifier: please ensure only one of the 'smtp' or 'filesystem' notifier is configured"
@@ -59,6 +61,10 @@ const (
 	errFmtNotifierStartTlsDisabled                = "Notifier SMTP connection has opportunistic STARTTLS explicitly disabled which means all emails will be sent insecurely over plain text and this setting is only necessary for non-compliant SMTP servers which advertise they support STARTTLS when they actually don't support STARTTLS"
 )
 
+const (
+	errSuffixMustBeOneOf = "is configured as '%s' but must be one of the following values: '%s'"
+)
+
 // Authentication Backend Error constants.
 const (
 	errFmtAuthBackendNotConfigured = "authentication_backend: you must ensure either the 'file' or 'ldap' " +
@@ -71,19 +77,16 @@ const (
 		" configured to '%s' which has the scheme '%s' but the scheme must be either 'http' or 'https'"
 
 	errFmtFileAuthBackendPathNotConfigured  = "authentication_backend: file: option 'path' is required"
-	errFmtFileAuthBackendPasswordSaltLength = "authentication_backend: file: password: option 'salt_length' " +
-		"must be 2 or more but it is configured a '%d'"
 	errFmtFileAuthBackendPasswordUnknownAlg = "authentication_backend: file: password: option 'algorithm' " +
-		"must be either 'argon2id' or 'sha512' but it is configured as '%s'"
-	errFmtFileAuthBackendPasswordInvalidIterations = "authentication_backend: file: password: option " +
-		"'iterations' must be 1 or more but it is configured as '%d'"
-	errFmtFileAuthBackendPasswordArgon2idInvalidKeyLength = "authentication_backend: file: password: option " +
-		"'key_length' must be 16 or more when using algorithm 'argon2id' but it is configured as '%d'"
-	errFmtFileAuthBackendPasswordArgon2idInvalidParallelism = "authentication_backend: file: password: option " +
-		"'parallelism' must be 1 or more when using algorithm 'argon2id' but it is configured as '%d'"
-	errFmtFileAuthBackendPasswordArgon2idInvalidMemory = "authentication_backend: file: password: option 'memory' " +
-		"must at least be parallelism multiplied by 8 when using algorithm 'argon2id' " +
-		"with parallelism %d it should be at least %d but it is configured as '%d'"
+		errSuffixMustBeOneOf
+	errFmtFileAuthBackendPasswordInvalidVariant = "authentication_backend: file: password: %s: " +
+		"option 'variant' " + errSuffixMustBeOneOf
+	errFmtFileAuthBackendPasswordOptionTooLarge = "authentication_backend: file: password: %s: " +
+		"option '%s' is configured as '%d' but must be less than or equal to '%d'"
+	errFmtFileAuthBackendPasswordOptionTooSmall = "authentication_backend: file: password: %s: " +
+		"option '%s' is configured as '%d' but must be greater than or equal to '%d'"
+	errFmtFileAuthBackendPasswordArgon2MemoryTooLow = "authentication_backend: file: password: argon2: " +
+		"option 'memory' is configured as '%d' but must be greater than or equal to '%d' or '%d' (the value of 'parallelism) multiplied by '%d'"
 
 	errFmtLDAPAuthBackendUnauthenticatedBindWithPassword     = "authentication_backend: ldap: option 'permit_unauthenticated_bind' can't be enabled when a password is specified"
 	errFmtLDAPAuthBackendUnauthenticatedBindWithResetEnabled = "authentication_backend: ldap: option 'permit_unauthenticated_bind' can't be enabled when password reset is enabled"
@@ -92,7 +95,7 @@ const (
 	errFmtLDAPAuthBackendTLSMinVersion = "authentication_backend: ldap: tls: option " +
 		"'minimum_tls_version' is invalid: %s: %w"
 	errFmtLDAPAuthBackendImplementation = "authentication_backend: ldap: option 'implementation' " +
-		"is configured as '%s' but must be one of the following values: '%s'"
+		errSuffixMustBeOneOf
 	errFmtLDAPAuthBackendFilterReplacedPlaceholders = "authentication_backend: ldap: option " +
 		"'%s' has an invalid placeholder: '%s' has been removed, please use '%s' instead"
 	errFmtLDAPAuthBackendURLNotParsable = "authentication_backend: ldap: option " +
@@ -288,7 +291,17 @@ const (
 	errFilePOptions = "config key incorrect: authentication_backend.file.password_options should be authentication_backend.file.password"
 )
 
-var validStoragePostgreSQLSSLModes = []string{testModeDisabled, "require", "verify-ca", "verify-full"}
+var validArgon2Variants = []string{"argon2id", "id", "argon2i", "i", "argon2d", "d"}
+
+var validSHA2CryptVariants = []string{digestSHA256, digestSHA512}
+
+var validPBKDF2Variants = []string{digestSHA1, digestSHA224, digestSHA256, digestSHA384, digestSHA512}
+
+var validBCryptVariants = []string{"standard", digestSHA256}
+
+var validHashAlgorithms = []string{hashSHA2Crypt, hashPBKDF2, hashSCrypt, hashBCrypt, hashArgon2}
+
+var validStoragePostgreSQLSSLModes = []string{"disable", "require", "verify-ca", "verify-full"}
 
 var validThemeNames = []string{"light", "dark", "grey", "auto"}
 

internal/configuration/validator/const_test.go

@@ -0,0 +1,12 @@
+package validator
+
+// Test constants.
+const (
+	testInvalid       = "invalid"
+	testJWTSecret     = "a_secret"
+	testLDAPBaseDN    = "base_dn"
+	testLDAPPassword  = "password"
+	testLDAPURL       = "ldap://ldap"
+	testLDAPUser      = "user"
+	testEncryptionKey = "a_not_so_secure_encryption_key"
+)

internal/configuration/validator/identity_providers_test.go

@@ -88,7 +88,7 @@ func TestShouldRaiseErrorWhenOIDCPKCEEnforceValueInvalid(t *testing.T) {
 		OIDC: &schema.OpenIDConnectConfiguration{
 			HMACSecret:       "rLABDrx87et5KvRHVUgTm3pezWWd8LMN",
 			IssuerPrivateKey: &rsa.PrivateKey{},
-			EnforcePKCE:      "invalid",
+			EnforcePKCE:      testInvalid,
 		},
 	}
 

internal/configuration/validator/theme_test.go

@@ -29,7 +29,7 @@ func (suite *Theme) TestShouldValidateCompleteConfiguration() {
 }
 
 func (suite *Theme) TestShouldRaiseErrorWhenInvalidThemeProvided() {
-	suite.config.Theme = "invalid"
+	suite.config.Theme = testInvalid
 
 	ValidateTheme(suite.config, suite.validator)
 

internal/configuration/validator/totp_test.go

@@ -30,7 +30,7 @@ func TestValidateTOTP(t *testing.T) {
 		{
 			desc: "ShouldNormalizeTOTPAlgorithm",
 			have: schema.TOTPConfiguration{
-				Algorithm:  "sha1",
+				Algorithm:  digestSHA1,
 				Digits:     6,
 				Period:     30,
 				SecretSize: 32,

internal/handlers/handler_verify.go

@@ -373,7 +373,7 @@ func verifySessionHasUpToDateProfile(ctx *middlewares.AutheliaCtx, targetURL *ur
 	return nil
 }
 
-func getProfileRefreshSettings(cfg schema.AuthenticationBackendConfiguration) (refresh bool, refreshInterval time.Duration) {
+func getProfileRefreshSettings(cfg schema.AuthenticationBackend) (refresh bool, refreshInterval time.Duration) {
 	if cfg.LDAP != nil {
 		if cfg.RefreshInterval == schema.ProfileRefreshDisabled {
 			refresh = false
@@ -433,7 +433,7 @@ func verifyAuth(ctx *middlewares.AutheliaCtx, targetURL *url.URL, refreshProfile
 }
 
 // VerifyGET returns the handler verifying if a request is allowed to go through.
-func VerifyGET(cfg schema.AuthenticationBackendConfiguration) middlewares.RequestHandler {
+func VerifyGET(cfg schema.AuthenticationBackend) middlewares.RequestHandler {
 	refreshProfile, refreshProfileInterval := getProfileRefreshSettings(cfg)
 
 	return func(ctx *middlewares.AutheliaCtx) {

internal/handlers/handler_verify_test.go

@@ -22,9 +22,9 @@ import (
 	"github.com/authelia/authelia/v4/internal/utils"
 )
 
-var verifyGetCfg = schema.AuthenticationBackendConfiguration{
+var verifyGetCfg = schema.AuthenticationBackend{
 	RefreshInterval: schema.RefreshIntervalDefault,
-	LDAP:            &schema.LDAPAuthenticationBackendConfiguration{},
+	LDAP:            &schema.LDAPAuthenticationBackend{},
 }
 
 func TestShouldRaiseWhenTargetUrlIsMalformed(t *testing.T) {

internal/notification/smtp_util_test.go

@@ -73,16 +73,16 @@ func createMIMEBytes(include8bit, crlf bool, lines, length int) []byte {
 		for j := 0; j < length/100; j++ {
 			switch {
 			case include8bit:
-				buf.Write(utils.RandomBytes(50, utils.AlphaNumericCharacters, false))
+				buf.Write(utils.RandomBytes(50, utils.CharSetAlphaNumeric, false))
 				buf.Write([]byte("£"))
-				buf.Write(utils.RandomBytes(49, utils.AlphaNumericCharacters, false))
+				buf.Write(utils.RandomBytes(49, utils.CharSetAlphabetic, false))
 			default:
-				buf.Write(utils.RandomBytes(100, utils.AlphaNumericCharacters, false))
+				buf.Write(utils.RandomBytes(100, utils.CharSetAlphaNumeric, false))
 			}
 		}
 
 		if n := length % 100; n != 0 {
-			buf.Write(utils.RandomBytes(n, utils.AlphaNumericCharacters, false))
+			buf.Write(utils.RandomBytes(n, utils.CharSetAlphaNumeric, false))
 		}
 
 		switch {

internal/server/template.go

@@ -64,7 +64,7 @@ func ServeTemplatedFile(publicDir, file, assetPath, duoSelfEnrollment, rememberM
 		}
 
 		baseURL := scheme + "://" + string(ctx.XForwardedHost()) + base + "/"
-		nonce := utils.RandomString(32, utils.AlphaNumericCharacters, true)
+		nonce := utils.RandomString(32, utils.CharSetAlphaNumeric, true)
 
 		switch extension := filepath.Ext(file); extension {
 		case ".html":

internal/suites/suite_cli_test.go

@@ -10,7 +10,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/suite"
-	"gopkg.in/yaml.v3"
+	yaml "gopkg.in/yaml.v3"
 
 	"github.com/authelia/authelia/v4/internal/model"
 	"github.com/authelia/authelia/v4/internal/storage"
@@ -84,16 +84,180 @@ func (s *CLISuite) TestShouldFailValidateConfig() {
 	s.Assert().Contains(output, "failed to load configuration from yaml file(/config/invalid.yml) source: open /config/invalid.yml: no such file or directory")
 }
 
-func (s *CLISuite) TestShouldHashPasswordArgon2id() {
-	output, err := s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "hash-password", "test", "-m", "32", "-s", "test1234"})
+func (s *CLISuite) TestShouldHashPasswordArgon2idLegacy() {
+	output, err := s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "hash-password", "test", "-m", "32"})
 	s.Assert().NoError(err)
-	s.Assert().Contains(output, "Password hash: $argon2id$v=19$m=32768,t=3,p=4$")
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=32768,t=3,p=4$")
 }
 
-func (s *CLISuite) TestShouldHashPasswordSHA512() {
+func (s *CLISuite) TestShouldHashPasswordSHA512Legacy() {
 	output, err := s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "hash-password", "test", "-z"})
 	s.Assert().NoError(err)
-	s.Assert().Contains(output, "Password hash: $6$rounds=50000")
+	s.Assert().Contains(output, "Digest: $6$rounds=50000")
+}
+
+func (s *CLISuite) TestShouldHashPasswordArgon2() {
+	var (
+		output string
+		err    error
+	)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-m=32768"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=32768,t=3,p=4$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-m", "32768", "-v=argon2i"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2i$v=19$m=32768,t=3,p=4$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-m=32768", "-v=argon2d"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2d$v=19$m=32768,t=3,p=4$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--random", "-m=32"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Random Password: ")
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=32,t=3,p=4$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-p=1"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=65536,t=3,p=1$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-i=1"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=65536,t=1,p=4$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-s=64"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=65536,t=3,p=4$")
+	s.Assert().GreaterOrEqual(len(output), 169)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "argon2", "--password=apple123", "-k=128"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $argon2id$v=19$m=65536,t=3,p=4$")
+	s.Assert().GreaterOrEqual(len(output), 233)
+}
+
+func (s *CLISuite) TestShouldHashPasswordSHA2Crypt() {
+	var (
+		output string
+		err    error
+	)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-v=sha256"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $5$rounds=50000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-v=sha512"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $6$rounds=50000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--random", "-s=8"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $6$rounds=50000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-i=10000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $6$rounds=10000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-s=20"})
+	s.Assert().NotNil(err)
+	s.Assert().Contains(output, "Error: errors occurred validating the password configuration: authentication_backend: file: password: sha2crypt: option 'salt_length' is configured as '20' but must be less than or equal to '16'")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-i=20"})
+	s.Assert().NotNil(err)
+	s.Assert().Contains(output, "Error: errors occurred validating the password configuration: authentication_backend: file: password: sha2crypt: option 'iterations' is configured as '20' but must be greater than or equal to '1000'")
+}
+
+func (s *CLISuite) TestShouldHashPasswordSHA2CryptSHA512() {
+	output, err := s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "sha2crypt", "--password=apple123", "-v=sha512"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $6$rounds=50000$")
+}
+
+func (s *CLISuite) TestShouldHashPasswordPBKDF2() {
+	var (
+		output string
+		err    error
+	)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--password=apple123", "-v=sha1"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $pbkdf2$310000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--random", "-v=sha256", "-i=100000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Random Password: ")
+	s.Assert().Contains(output, "Digest: $pbkdf2-sha256$100000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--password=apple123", "-v=sha512", "-i=100000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $pbkdf2-sha512$100000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--password=apple123", "-v=sha224", "-i=100000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $pbkdf2-sha224$100000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--password=apple123", "-v=sha384", "-i=100000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $pbkdf2-sha384$100000$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "pbkdf2", "--password=apple123", "-s=32", "-i=100000"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $pbkdf2-sha512$100000$")
+}
+
+func (s *CLISuite) TestShouldHashPasswordBCrypt() {
+	var (
+		output string
+		err    error
+	)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "bcrypt", "--password=apple123"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $2b$12$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "bcrypt", "--random", "-i=10"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Random Password: ")
+	s.Assert().Contains(output, "Digest: $2b$10$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "bcrypt", "--password=apple123", "-v=sha256"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $bcrypt-sha256$v=2,t=2b,r=12$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "bcrypt", "--random", "-v=sha256", "-i=10"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Random Password: ")
+	s.Assert().Contains(output, "Digest: $bcrypt-sha256$v=2,t=2b,r=10$")
+}
+
+func (s *CLISuite) TestShouldHashPasswordSCrypt() {
+	var (
+		output string
+		err    error
+	)
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "scrypt", "--password=apple123"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $scrypt$ln=16,r=8,p=1$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "scrypt", "--random"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Random Password: ")
+	s.Assert().Contains(output, "Digest: $scrypt$ln=16,r=8,p=1$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "scrypt", "--password=apple123", "-i=1"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $scrypt$ln=1,r=8,p=1$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "scrypt", "--password=apple123", "-i=1", "-p=2"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $scrypt$ln=1,r=8,p=2$")
+
+	output, err = s.Exec("authelia-backend", []string{"authelia", s.testArg, s.coverageArg, "crypto", "hash", "generate", "scrypt", "--password=apple123", "-i=1", "-r=2"})
+	s.Assert().NoError(err)
+	s.Assert().Contains(output, "Digest: $scrypt$ln=1,r=2,p=1$")
 }
 
 func (s *CLISuite) TestShouldGenerateRSACertificateRequest() {

internal/utils/const.go

@@ -110,9 +110,24 @@ const (
 	HoursInYear  = HoursInDay * 365
 )
 
-var (
-	// AlphaNumericCharacters are literally just valid alphanumeric chars.
-	AlphaNumericCharacters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+const (
+	// CharSetAlphabetic are literally just valid alphabetic printable ASCII chars.
+	CharSetAlphabetic = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+	// CharSetNumeric are literally just valid numeric chars.
+	CharSetNumeric = "0123456789"
+
+	// CharSetNumericHex are literally just valid hexadecimal printable ASCII chars.
+	CharSetNumericHex = CharSetNumeric + "ABCDEF"
+
+	// CharSetSymbolic are literally just valid symbolic printable ASCII chars.
+	CharSetSymbolic = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"
+
+	// CharSetAlphaNumeric are literally just valid alphanumeric printable ASCII chars.
+	CharSetAlphaNumeric = CharSetAlphabetic + CharSetNumeric
+
+	// CharSetASCII are literally just valid printable ASCII chars.
+	CharSetASCII = CharSetAlphabetic + CharSetNumeric + CharSetSymbolic
 )
 
 var htmlEscaper = strings.NewReplacer(

internal/utils/hashing_test.go

@@ -22,7 +22,7 @@ func TestShouldHashString(t *testing.T) {
 	assert.Equal(t, "ae448ac86c4e8e4dec645729708ef41873ae79c6dff84eff73360989487f08e5", anotherSum)
 	assert.NotEqual(t, sum, anotherSum)
 
-	randomInput := RandomString(40, AlphaNumericCharacters, false)
+	randomInput := RandomString(40, CharSetAlphaNumeric, false)
 	randomSum := HashSHA256FromString(randomInput)
 
 	assert.NotEqual(t, randomSum, sum)
@@ -39,7 +39,7 @@ func TestShouldHashPath(t *testing.T) {
 	err = os.WriteFile(filepath.Join(dir, "anotherfile"), []byte("another\n"), 0600)
 	assert.NoError(t, err)
 
-	err = os.WriteFile(filepath.Join(dir, "randomfile"), []byte(RandomString(40, AlphaNumericCharacters, true)+"\n"), 0600)
+	err = os.WriteFile(filepath.Join(dir, "randomfile"), []byte(RandomString(40, CharSetAlphaNumeric, true)+"\n"), 0600)
 	assert.NoError(t, err)
 
 	sum, err := HashSHA256FromPath(filepath.Join(dir, "myfile"))

internal/utils/strings_test.go

@@ -54,11 +54,11 @@ func TestStringJoinDelimitedEscaped(t *testing.T) {
 }
 
 func TestShouldNotGenerateSameRandomString(t *testing.T) {
-	randomStringOne := RandomString(10, AlphaNumericCharacters, false)
-	randomStringTwo := RandomString(10, AlphaNumericCharacters, false)
+	randomStringOne := RandomString(10, CharSetAlphaNumeric, false)
+	randomStringTwo := RandomString(10, CharSetAlphaNumeric, false)
 
-	randomCryptoStringOne := RandomString(10, AlphaNumericCharacters, true)
-	randomCryptoStringTwo := RandomString(10, AlphaNumericCharacters, true)
+	randomCryptoStringOne := RandomString(10, CharSetAlphaNumeric, true)
+	randomCryptoStringTwo := RandomString(10, CharSetAlphaNumeric, true)
 
 	assert.NotEqual(t, randomStringOne, randomStringTwo)
 	assert.NotEqual(t, randomCryptoStringOne, randomCryptoStringTwo)