/***********************************************************************
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* Project: baifenBinfa
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* ProjectName: 百分兵法管理系统
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* Web: http://chuanyin.com
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* Author:
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* Email:
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* CreateTime: 2021/7/29 21:44:44
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* Description: 暂无
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***********************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using CoreCms.Net.WeChat.Service.Models;
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namespace CoreCms.Net.WeChat.Service.Utilities
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{
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/// <summary>签名验证类</summary>
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public class CheckSignature
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{
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/// <summary>在网站没有提供Token（或传入为null）的情况下的默认Token，建议在网站中进行配置。</summary>
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public const string Token = "weixin";
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/// <summary>检查签名是否正确</summary>
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/// <param name="signature"></param>
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/// <param name="postModel">需要提供：Timestamp、Nonce、Token</param>
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/// <returns></returns>
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public static bool Check(string signature, PostModel postModel) => CheckSignature.Check(signature, postModel.Timestamp, postModel.Nonce, postModel.Token);
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/// <summary>检查签名是否正确</summary>
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/// <param name="signature"></param>
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/// <param name="timestamp"></param>
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/// <param name="nonce"></param>
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/// <param name="token"></param>
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/// <returns></returns>
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public static bool Check(string signature, string timestamp, string nonce, string token = null) => signature == CheckSignature.GetSignature(timestamp, nonce, token);
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/// <summary>返回正确的签名</summary>
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/// <param name="postModel">需要提供：Timestamp、Nonce、Token</param>
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/// <returns></returns>
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public static string GetSignature(PostModel postModel) => CheckSignature.GetSignature(postModel.Timestamp, postModel.Nonce, postModel.Token);
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/// <summary>返回正确的签名</summary>
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/// <param name="timestamp"></param>
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/// <param name="nonce"></param>
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/// <param name="token"></param>
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/// <returns></returns>
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public static string GetSignature(string timestamp, string nonce, string token = null)
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{
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token = token ?? "weixin";
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string s = string.Join("", ((IEnumerable<string>)new string[3]
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{
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token,
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timestamp,
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nonce
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}).OrderBy<string, string>((Func<string, string>)(z => z)).ToArray<string>());
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byte[] hash = SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(s));
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StringBuilder stringBuilder = new StringBuilder();
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foreach (byte num in hash)
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stringBuilder.AppendFormat("{0:x2}", (object)num);
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return stringBuilder.ToString();
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}
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}
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}
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