You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.4 KiB
61 lines
1.4 KiB
<?php
|
|
namespace addons\wanlshop\library\Decrypt\weixin;
|
|
use addons\wanlshop\library\Decrypt\weixin\errorCode;
|
|
|
|
class wxBizDataCrypt
|
|
{
|
|
private $appid;
|
|
private $sessionKey;
|
|
|
|
/**
|
|
* 构造函数
|
|
* @param $sessionKey string 用户在小程序登录后获取的会话密钥
|
|
* @param $appid string 小程序的appid
|
|
*/
|
|
public function __construct( $appid, $sessionKey)
|
|
{
|
|
$this->sessionKey = $sessionKey;
|
|
$this->appid = $appid;
|
|
}
|
|
|
|
|
|
/**
|
|
* 检验数据的真实性，并且获取解密后的明文.
|
|
* @param $encryptedData string 加密的用户数据
|
|
* @param $iv string 与用户数据一同返回的初始向量
|
|
* @param $data string 解密后的原文
|
|
*
|
|
* @return int 成功0，失败返回对应的错误码
|
|
*/
|
|
public function decryptData( $encryptedData, $iv, &$data )
|
|
{
|
|
if (strlen($this->sessionKey) != 24) {
|
|
return errorCode::$IllegalAesKey;
|
|
}
|
|
$aesKey=base64_decode($this->sessionKey);
|
|
|
|
|
|
if (strlen($iv) != 24) {
|
|
return errorCode::$IllegalIv;
|
|
}
|
|
$aesIV=base64_decode($iv);
|
|
|
|
$aesCipher=base64_decode($encryptedData);
|
|
|
|
$result=openssl_decrypt( $aesCipher, "AES-128-CBC", $aesKey, 1, $aesIV);
|
|
|
|
$dataObj=json_decode( $result );
|
|
if( $dataObj == NULL )
|
|
{
|
|
return errorCode::$IllegalBuffer;
|
|
}
|
|
if( $dataObj->watermark->appid != $this->appid )
|
|
{
|
|
return errorCode::$IllegalBuffer;
|
|
}
|
|
$data = $result;
|
|
return errorCode::$OK;
|
|
}
|
|
|
|
}
|
|
|
|
|