{
            try
            {

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.CookieContainer = m_CookieContainer; 
                request.Method = "POST";
                request.ContentType="application/x-www-form-urlencoded";
                
                byte[]  byte1=Encoding.Default.GetBytes(postData);//最终编码后要上传的数据
                request.Timeout = 20000;
                request.ContentLength = postData.Length;
                Stream writeStream = request.GetRequestStream();
                writeStream.Write(byte1,0,postData.Length);
                writeStream.Close();

HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 
                
                if (response.StatusCode == HttpStatusCode.OK)
                {
                    Stream stream = response.GetResponseStream(); 
                    StreamReader reader = new StreamReader(stream,System.Text.Encoding.Default);             
                    result = reader.ReadToEnd(); 
                    stream.Close(); 
                    reader.Close(); 
                    response.Close();    
                }
                else
                {
                    result = "";
                    return false;
                }                
                return true;
            }            
            catch(Exception ex)
            {
                WriteLog(ex.Message);
                return false;
            }
            
        }

　　　　{
          try
          {
              RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider();
              RSAalg.ImportParameters(GetParam());
              return RSAalg.VerifyData(digestInput, typeof(SHA1CryptoServiceProvider),signed);
          }
          catch
          {
              return false;
          }
       }
 
       private static RSAParameters GetParam()
       {
          //用公钥验证
          RSAParameters param = new RSAParameters();
          param.Exponent = Convert.FromBase64String("AQAB");
          param.Modulus = Convert.FromBase64String("55/Jb2IaIoEkgiDHWaHVRnsLivGYtNO/N6I+2P9qh12cm5vvZFk0/7EpuT1PiqruquJ/jbrp3dDDHZeT9xVi1uQ2HQDEcPBnX6FWowTqBHFHG9O00wLy3pCfmKpIRqD4ZRRKhcdtVnKndSTjp6Qrv5vbxWX6+mO9Mz6qF6k+JDc=");
          return param; 
       }