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<?php
namespace Drupal\Core\Password;
/**
* Secure password hashing functions for user authentication.
*/
interface PasswordInterface {
/**
* Maximum password length.
*/
const PASSWORD_MAX_LENGTH = 512;
/**
* Hash a password using a secure hash.
*
* @param string $password
* A plain-text password.
*
* @return string
* A string containing the hashed password, or FALSE on failure.
*/
public function hash($password);
/**
* Check whether a plain text password matches a hashed password.
*
* @param string $password
* A plain-text password
* @param string $hash
* A hashed password.
*
* @return bool
* TRUE if the password is valid, FALSE if not.
*/
public function check($password, $hash);
/**
* Check whether a hashed password needs to be replaced with a new hash.
*
* This is typically called during the login process when the plain text
* password is available. A new hash is needed when the desired iteration
* count has changed by a modification of the password-service in the
* dependency injection container or if the user's password hash was
* generated in an update like user_update_7000() (see the Drupal 7
* documentation).
*
* @param string $hash
* The existing hash to be checked.
*
* @return bool
* TRUE if the hash is outdated and needs rehash.
*/
public function needsRehash($hash);
}