PHP 7.1中AES加解密方法mcrypt_module_open()的替换方案

/**
 * [AesSecurity aes加密，支持PHP7.1]
 */
class AesSecurity
{
 /**
  * [encrypt aes加密]
  * @param [type]     $input [要加密的数据]
  * @param [type]     $key [加密key]
  * @return [type]       [加密后的数据]
  */
 public static function encrypt($input, $key)
 {
  $data = openssl_encrypt($input, 'AES-128-ECB', $key, OPENSSL_RAW_DATA);
  $data = base64_encode($data);
  return $data;
 }
 /**
  * [decrypt aes解密]
  * @param [type]     $sStr [要解密的数据]
  * @param [type]     $sKey [加密key]
  * @return [type]       [解密后的数据]
  */
 public static function decrypt($sStr, $sKey)
 {
  $decrypted = openssl_decrypt(base64_decode($sStr), 'AES-128-ECB', $sKey, OPENSSL_RAW_DATA);
  return $decrypted;
 }
}