PHP解密支付宝小程序的加密数据，手机号等。

1.小程序端代码示例

my.getPhoneNumber({
    success: (res) => {
        let encryptedData = res.response;
        my.httpRequest({
            url: '你的后端服务端',
            data: encryptedData,
        });
    },
    fail: (res) => {
        console.log(res);
        console.log('getPhoneNumber_fail');
    },
});

2.PHP后端解密示例

 public static function decryptData($encryptedData, $key = '开发设置-接口内容加密方式-查看-字符串')
    {
        $encrys = json_decode($encryptedData, true); $encryptedData = $encrys['response']; $str = base64_decode($encryptedData); $screct_key = base64_decode($key); //设置全0的IV $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC); $iv = str_repeat("\0", $iv_size); $decrypt_str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_CBC, $iv); $decrypt_str = self::stripPKSC7Padding($decrypt_str); return $decrypt_str; } public static function stripPKSC7Padding($source) { $char = substr($source, -1); $num = ord($char); if ($num == 62) return $source; $source = substr($source, 0, -$num); return $source; }

3.解密返回

{"code":"10000","msg":"Success","mobile":"185xxxxx111"}