<?php
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/*
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* This file is part of the overtrue/wechat.
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*
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* (c) overtrue <i@overtrue.me>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace EasyWeChat\MiniProgram;
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use EasyWeChat\Kernel\Encryptor as BaseEncryptor;
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use EasyWeChat\Kernel\Exceptions\DecryptException;
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use EasyWeChat\Kernel\Support\AES;
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/**
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* Class Encryptor.
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*
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* @author mingyoung <mingyoungcheung@gmail.com>
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*/
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class Encryptor extends BaseEncryptor
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{
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/**
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* Decrypt data.
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*
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* @param string $sessionKey
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* @param string $iv
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* @param string $encrypted
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*
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* @return array
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*
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* @throws \EasyWeChat\Kernel\Exceptions\DecryptException
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*/
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public function decryptData(string $sessionKey, string $iv, string $encrypted): array
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{
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$decrypted = AES::decrypt(
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base64_decode($encrypted, false), base64_decode($sessionKey, false), base64_decode($iv, false)
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);
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$decrypted = json_decode($this->pkcs7Unpad($decrypted), true);
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if (!$decrypted) {
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throw new DecryptException('The given payload is invalid.');
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}
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return $decrypted;
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}
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}
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