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<?php
namespace Illuminate\Hashing;
use Illuminate\Contracts\Hashing\Hasher as HasherContract;
use RuntimeException;
class BcryptHasher extends AbstractHasher implements HasherContract
{
/**
* The default cost factor.
*
* @var int
*/
protected $rounds = 10;
/**
* Indicates whether to perform an algorithm check.
*
* @var bool
*/
protected $verifyAlgorithm = false;
/**
* Create a new hasher instance.
*
* @param array $options
* @return void
*/
public function __construct(array $options = [])
{
$this->rounds = $options['rounds'] ?? $this->rounds;
$this->verifyAlgorithm = $options['verify'] ?? $this->verifyAlgorithm;
}
/**
* Hash the given value.
*
* @param string $value
* @param array $options
* @return string
*
* @throws \RuntimeException
*/
public function make($value, array $options = [])
{
$hash = password_hash($value, PASSWORD_BCRYPT, [
'cost' => $this->cost($options),
]);
if ($hash === false) {
throw new RuntimeException('Bcrypt hashing not supported.');
}
return $hash;
}
/**
* Check the given plain value against a hash.
*
* @param string $value
* @param string $hashedValue
* @param array $options
* @return bool
*
* @throws \RuntimeException
*/
public function check($value, $hashedValue, array $options = [])
{
if ($this->verifyAlgorithm && $this->info($hashedValue)['algoName'] !== 'bcrypt') {
throw new RuntimeException('This password does not use the Bcrypt algorithm.');
}
return parent::check($value, $hashedValue, $options);
}
/**
* Check if the given hash has been hashed using the given options.
*
* @param string $hashedValue
* @param array $options
* @return bool
*/
public function needsRehash($hashedValue, array $options = [])
{
return password_needs_rehash($hashedValue, PASSWORD_BCRYPT, [
'cost' => $this->cost($options),
]);
}
/**
* Set the default password work factor.
*
* @param int $rounds
* @return $this
*/
public function setRounds($rounds)
{
$this->rounds = (int) $rounds;
return $this;
}
/**
* Extract the cost value from the options array.
*
* @param array $options
* @return int
*/
protected function cost(array $options = [])
{
return $options['rounds'] ?? $this->rounds;
}
}
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