Encryptor.php
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<?php
/*
* This file is part of the overtrue/wechat.
*
* (c) overtrue <i@overtrue.me>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
/**
* Encryptor.php.
*
* Part of Overtrue\WeChat.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @author mingyoung <mingyoungcheung@gmail.com>
* @copyright 2016
*
* @see https://github.com/overtrue
* @see http://overtrue.me
*/
namespace EasyWeChat\MiniProgram\Encryption;
use EasyWeChat\Encryption\EncryptionException;
use EasyWeChat\Encryption\Encryptor as BaseEncryptor;
use Exception;
class Encryptor extends BaseEncryptor
{
/**
* Decrypt data.
*
* @param string $sessionKey
* @param string $iv
* @param string $encrypted
*
* @return array
*/
public function decryptData($sessionKey, $iv, $encrypted)
{
try {
$decrypted = openssl_decrypt(
base64_decode($encrypted, true), 'aes-128-cbc', base64_decode($sessionKey, true),
OPENSSL_RAW_DATA | OPENSSL_NO_PADDING, base64_decode($iv, true)
);
} catch (Exception $e) {
throw new EncryptionException($e->getMessage(), EncryptionException::ERROR_DECRYPT_AES);
}
if (is_null($result = json_decode($this->decode($decrypted), true))) {
throw new EncryptionException('ILLEGAL_BUFFER', EncryptionException::ILLEGAL_BUFFER);
}
return $result;
}
}