- <?php
- /**
- * AES128加解密类
- * @author dy
- *
- */
- defined('InEjbuy') or exit('Access Invalid!');
- class Aes{
- //密钥
- private $_secrect_key;
- public function __construct(){
- $this->_secrect_key = 'MYgGnQE2jDFADSFFDSEWsdD';
- }
- /**
- * 加密方法
- * @param string $str
- * @return string
- */
- public function encrypt($str){
- //AES, 128 ECB模式加密数据
- $screct_key = $this->_secrect_key;
- $screct_key = base64_decode($screct_key);
- $str = trim($str);
- $str = $this->addPKCS7Padding($str);
- $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);
- $encrypt_str = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_ECB, $iv);
- return base64_encode($encrypt_str);
- }
- /**
- * 解密方法
- * @param string $str
- * @return string
- */
- public function decrypt($str){
- //AES, 128 ECB模式加密数据
- $screct_key = $this->_secrect_key;
- $str = base64_decode($str);
- $screct_key = base64_decode($screct_key);
- $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);
- $encrypt_str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_ECB, $iv);
- $encrypt_str = trim($encrypt_str);
- $encrypt_str = $this->stripPKSC7Padding($encrypt_str);
- return $encrypt_str;
- }
- /**
- * 填充算法
- * @param string $source
- * @return string
- */
- function addPKCS7Padding($source){
- $source = trim($source);
- $block = mcrypt_get_block_size('rijndael-128', 'ecb');
- $pad = $block - (strlen($source) % $block);
- if ($pad <= $block) {
- $char = chr($pad);
- $source .= str_repeat($char, $pad);
- }
- return $source;
- }
- /**
- * 移去填充算法
- * @param string $source
- * @return string
- */
- function stripPKSC7Padding($source){
- $source = trim($source);
- $char = substr($source, -1);
- $num = ord($char);
- if($num==62)return $source;
- $source = substr($source,0,-$num);
- return $source;
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/1201201511510.html
来源: http://www.codesnippet.cn/detail/1201201511510.html