php提供的对称加密算法

KEY 是之前定义的常量
Mcrypt::encrypt();
Mcrypt::decrypt();

2. defined('ROOT') or exit('Access Denied');
4. class Mcrypt{
6. public static function encrypt($code){
7. return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5(KEY), $code, MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND)));
8. }
10. public static function decrypt($code){
11. return mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5(KEY), base64_decode($code), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND));
12. }
14. }

复制代码

php