PHP实现的AES双向加密解密功能示例【128位】

更新时间：2020-03-30 04:56:17 作者：startmvc

本文实例讲述了PHP实现的AES双向加密解密功能。分享给大家供大家参考，具体如下：<?

本文实例讲述了PHP实现的AES双向加密解密功能。分享给大家供大家参考，具体如下：


<?php
/*
 * Created on 2018-9-1
 *
 * To change the template for this generated file go to
 * Window - Preferences - PHPeclipse - PHP - Code Templates
 */
 /**
 用法：
 Security::encrypt($str,$key);
 Security::decrypt($str,$key);
 */
 class Security {
 public static function encrypt($input, $key) {
 $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
 $input = Security::pkcs5_pad($input, $size);
 $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
 $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
 mcrypt_generic_init($td, $key, $iv);
 $data = mcrypt_generic($td, $input);
 mcrypt_generic_deinit($td);
 mcrypt_module_close($td);
 $data = base64_encode($data);
 return $data;
 }
 private static function pkcs5_pad ($text, $blocksize) {
 $pad = $blocksize - (strlen($text) % $blocksize);
 return $text . str_repeat(chr($pad), $pad);
 }
 public static function decrypt($sStr, $sKey) {
 $decrypted= mcrypt_decrypt(
 MCRYPT_RIJNDAEL_128,
 $sKey,
 base64_decode($sStr),
 MCRYPT_MODE_ECB
 );
 $dec_s = strlen($decrypted);
 $padding = ord($decrypted[$dec_s-1]);
 $decrypted = substr($decrypted, 0, -$padding);
 return $decrypted;
 }
 }
//用法示例：
$str = "www.jb51.net";
$key = "123456";
echo "原始字符串：".$str."<br/>";
$pwdstr = Security::encrypt($str,$key);
echo "加密后：".$pwdstr."<br/>";
$destr = Security::decrypt($pwdstr,$key);
echo "解密结果：".$destr;
?>

运行结果：