public function getPermutationNumber()
{
return MathsHelper::factorial(count($this->plaintext_keys));
}
public function doProcess($str, \Closure $closure = null)
{
$count = count($this->plaintext_keys);
if ($this->flag & Cryptography::TYPE_COMBINATION) {
$max = pow($count, $count);
} else {
$max = MathsHelper::factorial($count);
}
for ($i = 0; $i < $max; $i++) {
try {
if (!is_callable($closure)) {
throw new \Exception(sprintf('"closure" argument "%s" is not callable!', is_array($closure) ? implode(' ', $closure) : $closure));
}
$value = $this->doProcessCombination($i);
$hash = call_user_func($closure, $value, $str);
if ($hash) {
return $value;
}
} catch (\Exception $e) {
throw $e;
}
}
return null;
}
