Encryption.php
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<?php
/**
* AES, 128 ECB模式加密数据
* 原有的填充方法没用到，否则与java、node不一致，暂时保留
*/
namespace WebPlugin;
class Encryption {
//密钥
private static $_secretKey = 'yoho9646abcdefgh';
/**
* 加密方法
* @param string $str 加密字符
* @param string $key 密钥
* @return string
*/
public static function encrypt($str, $key = ''){
//AES, 128 ECB模式加密数据
$secretKey = $key ? $key : self::$_secretKey;
$str = trim($str);
// $str = self::addPKCS7Padding($str);
$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);
$encrypt_str = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $secretKey, $str, MCRYPT_MODE_ECB, $iv);
return base64_encode($encrypt_str);
}
/**
* 解密方法
* @param string $str 解密字符
* @param string $key 密钥
* @return string
*/
public static function decrypt($str, $key = ''){
//AES, 128 ECB模式加密数据
$secretKey = $key ? $key : self::$_secretKey;
$str = base64_decode($str);
$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);
$encrypt_str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $secretKey, $str, MCRYPT_MODE_ECB, $iv);
$encrypt_str = trim($encrypt_str);
// $encrypt_str = self::stripPKSC7Padding($encrypt_str);
return $encrypt_str;
}
/**
* 填充算法
* @param string $source
* @return string
*/
private static function addPKCS7Padding($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 $source
* @return string
*/
private static function stripPKSC7Padding($source){
$source = trim($source);
$char = substr($source, -1);
$num = ord($char);
if($num==62)return $source;
$source = substr($source,0,-$num);
return $source;
}
}