MediaWiki\Password\AbstractPbkdf2Password Class Reference

A PBKDF2-hashed password. More...

Inherits MediaWiki\Password\ParameterizedPassword.

Inherited by MediaWiki\Password\Pbkdf2PasswordUsingHashExtension, and MediaWiki\Password\Pbkdf2PasswordUsingOpenSSL.

Collaboration diagram for MediaWiki\Password\AbstractPbkdf2Password:

Public Member Functions
	crypt (string $password)
	Hash a password and store the result in this object.
Public Member Functions inherited from MediaWiki\Password\ParameterizedPassword
	needsUpdate ()
	Determine if the hash needs to be updated.
	toString ()
	Convert this hash to a string that can be stored in the database.
Public Member Functions inherited from MediaWiki\Password\Password
	__construct (PasswordFactory $factory, array $config, string $hash=null)
	Construct the Password object using a string hash.
	getType ()
	Get the type name of the password.
	verify (string $password)
	Checks whether the given password matches the hash stored in this object.

Protected Member Functions
	getDefaultParams ()
	Return an ordered array of default parameters for this password hash.
	getDelimiter ()
	Returns the delimiter for the parameters inside the hash.
	getDigestAlgo (string $algo)
	Get the implementation specific name for a hash algorithm.
	pbkdf2 (string $digestAlgo, string $password, string $salt, int $rounds, int $length)
	Call the PBKDF2 implementation, which hashes the password.
Protected Member Functions inherited from MediaWiki\Password\ParameterizedPassword
	parseHash (?string $hash)
	Perform any parsing necessary on the hash to see if the hash is valid and/or to perform logic for seeing if the hash needs updating. Parameters string | null $hash The hash, with the :<TYPE>: prefix stripped Exceptions PasswordError If there is an error in parsing the hash
Protected Member Functions inherited from MediaWiki\Password\Password
	assertIsSafeSize (string $hash)
	Assert that hash will fit in a tinyblob field.
	isSupported ()
	Whether current password type is supported on this system.

Additional Inherited Members
Protected Attributes inherited from MediaWiki\Password\ParameterizedPassword
string[]	$args = []
	Extra arguments that were found in the hash.
array	$params = []
	Named parameters that have default values for this password type.
Protected Attributes inherited from MediaWiki\Password\Password
array	$config
	Array of configuration variables injected from the constructor.
PasswordFactory	$factory
	Factory that created the object.
string null	$hash
	String representation of the hash without the type.

Detailed Description

A PBKDF2-hashed password.

This is a computationally complex password hash for use in modern applications. The number of rounds can be configured by $wgPasswordConfig['pbkdf2']['cost'].

To support different native implementations of PBKDF2 and the underlying hash algorithms, the following subclasses are available:

• Pbkdf2PasswordUsingOpenSSL is the preferred, more efficient option and is used by default.
• Pbkdf2PasswordUsingHashExtension provides compatibility with PBKDF2 password hashes computed using legacy algorithms.

Since

1.40

Definition at line 43 of file AbstractPbkdf2Password.php.

Member Function Documentation

crypt()

MediaWiki\Password\AbstractPbkdf2Password::crypt

(

string

$password

)

Hash a password and store the result in this object.

The result of the password hash should be put into the internal state of the hash object.

Parameters

string

$password

Password to hash

Exceptions

PasswordError

If an internal error occurs in hashing

Reimplemented from MediaWiki\Password\Password.

Definition at line 56 of file AbstractPbkdf2Password.php.

getDefaultParams()

MediaWiki\Password\AbstractPbkdf2Password::getDefaultParams ( )

protected

Return an ordered array of default parameters for this password hash.

The keys should be the parameter names and the values should be the default values. Additionally, the order of the array should be the order in which they appear in the hash.

When parsing a password hash, the constructor will split the hash based on the delimiter, and consume as many parts as it can, matching each to a parameter in this list. Once all the parameters have been filled, all remaining parts will be considered extra arguments, except, of course, for the very last part, which is the hash itself.

Returns

array

Reimplemented from MediaWiki\Password\ParameterizedPassword.

Definition at line 44 of file AbstractPbkdf2Password.php.

getDelimiter()

MediaWiki\Password\AbstractPbkdf2Password::getDelimiter ( )

protected

Returns the delimiter for the parameters inside the hash.

Returns

string

Reimplemented from MediaWiki\Password\ParameterizedPassword.

Definition at line 52 of file AbstractPbkdf2Password.php.

getDigestAlgo()

MediaWiki\Password\AbstractPbkdf2Password::getDigestAlgo ( string $algo )

abstractprotected

Get the implementation specific name for a hash algorithm.

Parameters

string

$algo

Algorithm specified in the password hash string

Returns

string|null $algo Implementation specific name, or null if unsupported

Reimplemented in MediaWiki\Password\Pbkdf2PasswordUsingHashExtension, and MediaWiki\Password\Pbkdf2PasswordUsingOpenSSL.

pbkdf2()

MediaWiki\Password\AbstractPbkdf2Password::pbkdf2 ( string $digestAlgo, string $password, string $salt, int $rounds, int $length )

abstractprotected

Call the PBKDF2 implementation, which hashes the password.

Parameters

string	$digestAlgo	Implementation specific hash algorithm name
string	$password	Password to hash
string	$salt	Salt as a binary string
int	$rounds	Number of iterations
int	$length	Length of the hash value in bytes

Returns

string Hash value as a binary string

Exceptions

PasswordError

If an internal error occurs in hashing

Reimplemented in MediaWiki\Password\Pbkdf2PasswordUsingHashExtension, and MediaWiki\Password\Pbkdf2PasswordUsingOpenSSL.

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The documentation for this class was generated from the following file:

• includes/password/AbstractPbkdf2Password.php