<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------
// server/utils/SignUtil.php

namespace ywxapp\utils;

/**
 * SignUtil 类
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class SignUtil
{ 
 
     
     public static function generateSign(array $params, string $secret): string
    {
        unset($params['sign']);
        ksort($params); 
        $signString = urldecode(http_build_query($params, '', '&'));
        return hash_hmac('sha256', $signString, $secret);
    }

    
    public static function verifySign(array $params, string $secret): bool
    {
        if (!isset($params['sign'])) return false;
        $sign = $params['sign'];
        $expected = self::generateSign($params, $secret); 
        return strtolower($sign) === strtolower($expected);
    }   
}