php解密微信小程序数据-即速应用

php解密微信小程序数据

浏览量：713 时间：2019-12-22 来源：guilin0613

要获取微信的敏感数据，需要先将加密的数据解密之后才能获取

/** * Created by PhpStorm. * User: HP * Date: 2019/8/15 * Time: 14:13 * * error code 说明. * ul *    li-41001: encodingAesKey 非法/li *    li-41003: aes 解密失败/li *    li-41004: 解密后得到的buffer非法/li *    li-41005: base64加密失败/li *    li-41016: base64解密失败/li * /ul */class WXBizDataCrypt{    public static $OK = 0;    public static $IllegalAesKey = -41001;    public static $IllegalIv = -41002;    public static $IllegalBuffer = -41003;    public static $DecodeBase64Error = -41004;    private $appid;    private $sessionKey;    /**     * 构造函数     * $sessionKey string 用户在小程序登录后获取的会话密钥     * $appid string 小程序的appid     * WXBizDataCrypt constructor.     * @param $params     */    public function __construct($params)    {        $this-sessionKey = $params["sessionKey"];        $this-appid = $params["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($this-sessionKey) != 24) {            return self::$IllegalAesKey;        }        $aesKey=base64_decode($this-sessionKey);        if (strlen($iv) != 24) {            return self::$IllegalIv;        }        $aesIV=base64_decode($iv);        $aesCipher=base64_decode($encryptedData);        $result=openssl_decrypt( $aesCipher, "AES-128-CBC", $aesKey, 1, $aesIV);        $dataObj=json_decode( $result );        if( $dataObj  == NULL )        {            return self::$IllegalBuffer;        }        if( $dataObj-watermark-appid != $this-appid )        {            return self::$IllegalBuffer;        }        $data = $result;        return self::$OK;    }}