C#은 WeChat 포털을 개발하고 WeChat 엔터프라이즈 계정을 사용하여 메시지와 이벤트를 수신, 처리 및 해독합니다.

    /// <summary>
    /// 企业号回调信息接口。统一接收并处理信息的入口。    /// </summary>
    public class corpapi : IHttpHandler
    {        /// <summary>
        /// 处理企业号的信息        /// </summary>
        /// <param name="context"></param>
        public void ProcessRequest(HttpContext context)
        {

                    if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST")
                    {                        using (Stream stream = HttpContext.Current.Request.InputStream)
                        {
                            Byte[] postBytes = new Byte[stream.Length];
                            stream.Read(postBytes, 0, (Int32)stream.Length);
                            postString = Encoding.UTF8.GetString(postBytes);
                        }                        if (!string.IsNullOrEmpty(postString))
                        {
                            Execute(postString, accountInfo);
                        }
                    }                    else
                    {
                        Auth(accountInfo);
                    }

                        #region 具体处理逻辑                        string echoString = HttpContext.Current.Request.QueryString["echoStr"];                        string signature = HttpContext.Current.Request.QueryString["msg_signature"];//企业号的 msg_signature
                        string timestamp = HttpContext.Current.Request.QueryString["timestamp"];                        string nonce = HttpContext.Current.Request.QueryString["nonce"];                        string decryptEchoString = "";                        if (new CorpBasicApi().CheckSignature(token, signature, timestamp, nonce, corpId, encodingAESKey, echoString, ref decryptEchoString))
                        {                            if (!string.IsNullOrEmpty(decryptEchoString))
                            {
                                HttpContext.Current.Response.Write(decryptEchoString);
                                HttpContext.Current.Response.End();
                            }
                        } 
                        #endregion

        /// <summary>
        /// 验证企业号签名        /// </summary>
        /// <param name="token">企业号配置的Token</param>
        /// <param name="signature">签名内容</param>
        /// <param name="timestamp">时间戳</param>
        /// <param name="nonce">nonce参数</param>
        /// <param name="corpId">企业号ID标识</param>
        /// <param name="encodingAESKey">加密键</param>
        /// <param name="echostr">内容字符串</param>
        /// <param name="retEchostr">返回的字符串</param>
        /// <returns></returns>
        public bool CheckSignature(string token, string signature, string timestamp, string nonce, string corpId, string encodingAESKey, string echostr, ref string retEchostr)
        {
            WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(token, encodingAESKey, corpId);            int result = wxcpt.VerifyURL(signature, timestamp, nonce, echostr, ref retEchostr);            if (result != 0)
            {
                LogTextHelper.Error("ERR: VerifyURL fail, ret: " + result);                return false;
            }            return true;
        }

                    if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST")
                    {                        using (Stream stream = HttpContext.Current.Request.InputStream)
                        {
                            Byte[] postBytes = new Byte[stream.Length];
                            stream.Read(postBytes, 0, (Int32)stream.Length);
                            postString = Encoding.UTF8.GetString(postBytes);
                        }                        if (!string.IsNullOrEmpty(postString))
                        {
                            Execute(postString, accountInfo);
                        }
                    }

            string echoString = HttpContext.Current.Request.QueryString["echoStr"];            string signature = HttpContext.Current.Request.QueryString["msg_signature"];//企业号的 msg_signature
            string timestamp = HttpContext.Current.Request.QueryString["timestamp"];            string nonce = HttpContext.Current.Request.QueryString["nonce"];

            //获取配置参数并对加解密函数初始化
            string CorpToken = accountInfo.Token;            string AESKey = accountInfo.EncodingAESKey;            string CorpId = accountInfo.CorpID;

            //根据参数信息，初始化微信对应的消息加密解密类
            WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(CorpToken, AESKey, CorpId);            //对收到的密文进行解析处理
            string sMsg = "";  // 解析之后的明文
            int flag = wxcpt.DecryptMsg(signature, timestamp, nonce, postStr, ref sMsg);            if (flag == 0)
            {                //LogTextHelper.Info("记录解密后的数据:");                //LogTextHelper.Info(sMsg);//记录解密后的数据
                CorpApiDispatch dispatch = new CorpApiDispatch();                string responseContent = dispatch.Execute(sMsg);                //加密后并发送                //LogTextHelper.Info(responseContent);
                string encryptResponse = "";
                timestamp = DateTime.Now.DateTimeToInt().ToString();
                wxcpt.EncryptMsg(responseContent, timestamp, nonce, ref encryptResponse, ref signature);

                HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
                HttpContext.Current.Response.Write(encryptResponse);
            }            else
            {
                LogTextHelper.Info("解密消息失败！");
            }

                CorpApiDispatch dispatch = new CorpApiDispatch();                string responseContent = dispatch.Execute(sMsg);