<_secrect_key = C("AESPASSWORD");
}
/**
* 加密方法
* @param string $str
* @return string
*/
public function aesencrypt($str) {
//AES, 128 ECB模式加密数据
$screct_key = $this->_secrect_key;
// $screct_key = base64_decode($screct_key);
$str = rtrim($str, '\0');
$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 $str
* @return string
*/
// public function aesdecrypt($str){
// //AES, 128 ECB模式加密数据
// $screct_key = $this->_secrect_key;
// $str=str_replace(" ","+",$str);
// $str=base64_decode($str);
// $str=rtrim($str , '\0');
// // $str = $this->stripPKSC7Padding($str);
// $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 = $this->addPKCS7Padding($encrypt_str);
// $encrypt_str = preg_replace( '/[\x00-\x1F]/','',$encrypt_str);
// return $encrypt_str;
// }
/* 解密方法
* @param string $str
* @return string
*/
function aesdecrypt($str) {
$key = $this->_secrect_key;
$str = base64_decode($str);
$str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB);
$block = mcrypt_get_block_size('rijndael_128', 'ecb');
$pad = ord($str[($len = strlen($str)) - 1]);
$len = strlen($str);
$pad = ord($str[$len - 1]);
return substr($str, 0, strlen($str) - $pad);
}
/**
* 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;
}
}
// $obj=new Aes();
// $destr=$obj->aesencrypt("123456");
// echo $destr."
";
// echo $obj->aesdecrypt("yXVUkR45PFz0UfpbDB8/ew==")."
";
>
