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<?php
namespace Safe;
use Safe\Exceptions\PasswordException;
/**
* password_hash creates a new password hash using a strong one-way hashing
* algorithm. password_hash is compatible with crypt.
* Therefore, password hashes created by crypt can be used with
* password_hash.
*
*
*
*
* PASSWORD_DEFAULT - Use the bcrypt algorithm (default as of PHP 5.5.0).
* Note that this constant is designed to change over time as new and stronger algorithms are added
* to PHP. For that reason, the length of the result from using this identifier can change over
* time. Therefore, it is recommended to store the result in a database column that can expand
* beyond 60 characters (255 characters would be a good choice).
*
*
*
*
* PASSWORD_BCRYPT - Use the CRYPT_BLOWFISH algorithm to
* create the hash. This will produce a standard crypt compatible hash using
* the "$2y$" identifier. The result will always be a 60 character string.
*
*
*
*
* PASSWORD_ARGON2I - Use the Argon2i hashing algorithm to create the hash.
* This algorithm is only available if PHP has been compiled with Argon2 support.
*
*
*
*
* PASSWORD_ARGON2ID - Use the Argon2id hashing algorithm to create the hash.
* This algorithm is only available if PHP has been compiled with Argon2 support.
*
*
*
*
*
*
*
* salt (string) - to manually provide a salt to use when hashing the password.
* Note that this will override and prevent a salt from being automatically generated.
*
*
* If omitted, a random salt will be generated by password_hash for
* each password hashed. This is the intended mode of operation.
*
*
*
* The salt option has been deprecated as of PHP 7.0.0. It is now
* preferred to simply use the salt that is generated by default.
*
*
*
*
*
* cost (integer) - which denotes the algorithmic cost that should be used.
* Examples of these values can be found on the crypt page.
*
*
* If omitted, a default value of 10 will be used. This is a good
* baseline cost, but you may want to consider increasing it depending on your hardware.
*
*
*
*
*
*
*
* memory_cost (integer) - Maximum memory (in kibibytes) that may
* be used to compute the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_MEMORY_COST.
*
*
*
*
* time_cost (integer) - Maximum amount of time it may
* take to compute the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_TIME_COST.
*
*
*
*
* threads (integer) - Number of threads to use for computing
* the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_THREADS.
*
*
*
*
* @param string $password The user's password.
*
* Using the PASSWORD_BCRYPT as the
* algorithm, will result
* in the password parameter being truncated to a
* maximum length of 72 characters.
* @param int|string|null $algo A password algorithm constant denoting the algorithm to use when hashing the password.
* @param array $options An associative array containing options. See the password algorithm constants for documentation on the supported options for each algorithm.
*
* If omitted, a random salt will be created and the default cost will be
* used.
* @return string Returns the hashed password.
*
* The used algorithm, cost and salt are returned as part of the hash. Therefore,
* all information that's needed to verify the hash is included in it. This allows
* the password_verify function to verify the hash without
* needing separate storage for the salt or algorithm information.
* @throws PasswordException
* @deprecated The Safe version of this function is no longer needed in PHP 8.0+
*
*/
function password_hash(string $password, $algo, array $options = null): string
{
error_clear_last();
if ($options !== null) {
$result = \password_hash($password, $algo, $options);
} else {
$result = \password_hash($password, $algo);
}
if ($result === false) {
throw PasswordException::createFromPhpError();
}
return $result;
}