Файл: concrete5.7.5.6/concrete/vendor/zendframework/zend-crypt/src/Symmetric/Padding/Pkcs7.php
Строк: 63
<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace ZendCryptSymmetricPadding;
/**
* PKCS#7 padding
*/
class Pkcs7 implements PaddingInterface
{
/**
* Pad the string to the specified size
*
* @param string $string The string to pad
* @param int $blockSize The size to pad to
*
* @return string The padded string
*/
public function pad($string, $blockSize = 32)
{
$pad = $blockSize - (strlen($string) % $blockSize);
return $string . str_repeat(chr($pad), $pad);
}
/**
* Strip the padding from the supplied string
*
* @param string $string The string to trim
*
* @return string The unpadded string
*/
public function strip($string)
{
$end = substr($string, -1);
$last = ord($end);
$len = strlen($string) - $last;
if (substr($string, $len) == str_repeat($end, $last)) {
return substr($string, 0, $len);
}
return false;
}
}