C# Socket ssl
一、x.509证书
1.制作证书
先进入到vs2005的命令行状态，即:
开始-->程序-->Microsoft Visual Studio 2005-->Visual Studio Tools-->Visual Studio 2005 命令提示
键入:
makecert -r -pe -n
"
CN=MyServer
"
-ss My -sky exchange
解释一下：makecert.exe是一个专门用来制作证书的小工具，上面一行的意思就是制作一个CN=MyServer的服务器证书，默认存储在CurrentUser"My这个位置，同时这个证书标识为可导出。(详细的
MakeCert参数可参见http://msdn.microsoft.com/zh-cn/bfsktky3(vs.80).aspx)
再输入:
makecert -r -pe -n
"
CN=MyClient
"
-ss My -sky exchange
生成客户端证书,证书生成好以后，可以在IE里查看到,IE-->工具-->Internet选项-->内容-->证书
记得要把证书导入到受信任的那栏，不然是访问不到的， 然后在IE-->工具-->Internet选项-->内容-->证书里导出一个CER，面通知过程中选不要是私钥， 这样给客户端使用
socket服务器的建立代码如下，注意所引用的命名空间:
using System;
using System.ServiceModel;
using System.Net;
using System.Net.Sockets;
using System.Net.Security;
using System.Text;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;
using System.IdentityModel.Tokens;
using System.IdentityModel.Selectors;
namespace ConsoleApp
{
public class Program
{
static X509Certificate serverCertificate = null ;
public static void RunServer()
{
// serverCertificate = X509Certificate.CreateFromSignedFile(@"C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\samool.pvk");
TcpListener listener = new TcpListener(IPAddress.Parse( " 192.168.20.139 " ), 901 );
listener.Start();
while ( true )
{
try
{
Console.WriteLine( " Waiting for a client to connect... " );
TcpClient client = listener.AcceptTcpClient();
ProcessClient(client);
}
catch
{
}
}
}
static void ProcessClient(TcpClient client)
{
SslStream sslStream = new SslStream(client.GetStream(), false );
try
{
sslStream.AuthenticateAsServer(serverCertificate, false , SslProtocols.Tls, true );
DisplaySecurityLevel(sslStream);
DisplaySecurityServices(sslStream);
DisplayCertificateInformation(sslStream);
DisplayStreamProperties(sslStream);
sslStream.ReadTimeout = 5000 ;
sslStream.WriteTimeout = 5000 ;
Console.WriteLine( " Waiting for client message... " );
string messageData = ReadMessage(sslStream);
Console.WriteLine( " Received: {0} " , messageData);
byte [] message = Encoding.UTF8.GetBytes( " Hello from the server. " );
Console.WriteLine( " Sending hello message. " );
sslStream.Write(message);
}
catch (AuthenticationException e)
{
Console.WriteLine( " Exception: {0} " , e.Message);
if (e.InnerException != null )
{
Console.WriteLine( " Inner exception: {0} " , e.InnerException.Message);
}
Console.WriteLine( " Authentication failed - closing the connection. " );
sslStream.Close();
client.Close();
return ;
}
finally
{
sslStream.Close();
client.Close();
}
}
static string ReadMessage(SslStream sslStream)
{
byte [] buffer = new byte [ 2048 ];
StringBuilder messageData = new StringBuilder();
int bytes = - 1 ;
do
{
bytes = sslStream.Read(buffer, 0 , buffer.Length);
Decoder decoder = Encoding.UTF8.GetDecoder();
char [] chars = new char [decoder.GetCharCount(buffer, 0 , bytes)];
decoder.GetChars(buffer, 0 , bytes, chars, 0 );
messageData.Append(chars);
if (messageData.ToString().IndexOf( "" ) != - 1 )
{
break ;
}
}
while (bytes != 0 );
return messageData.ToString();
}
static void DisplaySecurityLevel(SslStream stream)
{
Console.WriteLine( " Cipher: {0} strength {1} " , stream.CipherAlgorithm, stream.CipherStrength);
Console.WriteLine( " Hash: {0} strength {1} " , stream.HashAlgorithm, stream.HashStrength);
Console.WriteLine( " Key exchange: {0} strength {1} " , stream.KeyExchangeAlgorithm, stream.KeyExchangeStrength);
Console.WriteLine( " Protocol: {0} " , stream.SslProtocol);
}
static void DisplaySecurityServices(SslStream stream)
{
Console.WriteLine( " Is authenticated: {0} as server? {1} " , stream.IsAuthenticated, stream.IsServer);
Console.WriteLine( " IsSigned: {0} " , stream.IsSigned);
Console.WriteLine( " Is Encrypted: {0} " , stream.IsEncrypted);
}
static void DisplayStreamProperties(SslStream stream)
{
Console.WriteLine( " Can read: {0}, write {1} " , stream.CanRead, stream.CanWrite);
Console.WriteLine( " Can timeout: {0} " , stream.CanTimeout);
}
static void DisplayCertificateInformation(SslStream stream)
{
Console.WriteLine( " Certificate revocation list checked: {0} " , stream.CheckCertRevocationStatus);
X509Certificate localCertificate = stream.LocalCertificate;
if (stream.LocalCertificate != null )
{
Console.WriteLine( " Local cert was issued to {0} and is valid from {1} until {2}. " ,
localCertificate.Subject,
localCertificate.GetEffectiveDateString(),
localCertificate.GetExpirationDateString());
}
else
{
Console.WriteLine( " Local certificate is null. " );
}
X509Certificate remoteCertificate = stream.RemoteCertificate;
if (stream.RemoteCertificate != null )
{
Console.WriteLine( " Remote cert was issued to {0} and is valid from {1} until {2}. " ,
remoteCertificate.Subject,
remoteCertificate.GetEffectiveDateString(),
remoteCertificate.GetExpirationDateString());
}
else
{
Console.WriteLine( " Remote certificate is null. " );
}
}
private static void DisplayUsage()
{
Console.WriteLine( " To start the server specify: " );
Console.WriteLine( " serverSync certificateFile.cer " );
// Environment.Exit(1);
}
public static void Main( string [] args)
{
// string certificate = null;
// if (args == null || args.Length < 1)
// {
// DisplayUsage();
// }
// certificate = args[0];
try
{
X509Store store = new X509Store(StoreName.My);
store.Open(OpenFlags.ReadWrite);
// 检索证书
X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName, " MyServer " , false ); // vaildOnly = true时搜索无结果。
if (certs.Count == 0 ) return ;
serverCertificate = certs[ 0 ];
RunServer();
store.Close(); // 关闭存储区。
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
// return 0;
// try
// {
// Console.WriteLine("服务端输出：" + ServiceSecurityContext.Current.PrimaryIdentity.AuthenticationType);
// Console.WriteLine(ServiceSecurityContext.Current.PrimaryIdentity.Name);
// Console.WriteLine("服务端时间：" + DateTime.Now.ToString());
// }
// catch (Exception ex)
// {
// Console.WriteLine(ex.Message);
// }
// Console.ReadLine();
}
}
}
Sokect客户端代码如下：
using System;
using System.Security;
using System.Net;
using System.Net.Sockets;
using System.Net.Security;
using System.Text;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;
namespace ConsoleAppClient
{
using System;
using System.Collections;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Security.Authentication;
using System.Text;
using System.Security.Cryptography.X509Certificates;
using System.IO;
namespace Examples.System.Net
{
public class SslTcpClient
{
private static Hashtable certificateErrors = new Hashtable();
// The following method is invoked by the RemoteCertificateValidationDelegate.
public static bool ValidateServerCertificate(
object sender,
X509Certificate certificate,
X509Chain chain,
SslPolicyErrors sslPolicyErrors)
{
if (sslPolicyErrors == SslPolicyErrors.None)
return true ;
Console.WriteLine( " Certificate error: {0} " , sslPolicyErrors);
// Do not allow this client to communicate with unauthenticated servers.
return false ;
}
public static void RunClient( string machineName)
{
// Create a TCP/IP client socket.
// machineName is the host running the server application.
TcpClient client = new TcpClient(machineName, 901 );
Console.WriteLine( " Client connected. " );
// Create an SSL stream that will close the client's stream.
SslStream sslStream = new SslStream(client.GetStream(), false , new RemoteCertificateValidationCallback(ValidateServerCertificate), null );
// The server name must match the name on the server certificate.
// X509Store store = new X509Store(StoreName.My);
// store.Open(OpenFlags.ReadWrite);
/// / 检索证书
// X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName, "MyServer", false); // vaildOnly = true时搜索无结果。
X509CertificateCollection certs = new X509CertificateCollection();
X509Certificate cert = X509Certificate.CreateFromCertFile( @" D:\cashcer.cer " );
certs.Add(cert);
try
{
sslStream.AuthenticateAsClient( " MyServer " , certs, SslProtocols.Tls, false );
}
catch (AuthenticationException e)
{
Console.WriteLine( " Exception: {0} " , e.Message);
if (e.InnerException != null )
{
Console.WriteLine( " Inner exception: {0} " , e.InnerException.Message);
}
Console.WriteLine( " Authentication failed - closing the connection. " );
client.Close();
return ;
}
// Encode a test message into a byte array.
// Signal the end of the message using the "<EOF>".
byte [] messsage = Encoding.UTF8.GetBytes( " Hello from the client.<EOF> " );
// Send hello message to the server.
sslStream.Write(messsage);
sslStream.Flush();
// Read message from the server.
string serverMessage = ReadMessage(sslStream);
Console.WriteLine( " Server says: {0} " , serverMessage);
// Close the client connection.
client.Close();
Console.WriteLine( " Client closed. " );
}
static string ReadMessage(SslStream sslStream)
{
// Read the message sent by the server.
// The end of the message is signaled using the
// "<EOF>" marker.
byte [] buffer = new byte [ 2048 ];
StringBuilder messageData = new StringBuilder();
int bytes = - 1 ;
do
{
bytes = sslStream.Read(buffer, 0 , buffer.Length);
// Use Decoder class to convert from bytes to UTF8
// in case a character spans two buffers.
Decoder decoder = Encoding.UTF8.GetDecoder();
char [] chars = new char [decoder.GetCharCount(buffer, 0 , bytes)];
decoder.GetChars(buffer, 0 , bytes, chars, 0 );
messageData.Append(chars);
// Check for EOF.
if (messageData.ToString().IndexOf( " <EOF> " ) != - 1 )
{
break ;
}
} while (bytes != 0 );
return messageData.ToString();
}
private static void DisplayUsage()
{
Console.WriteLine( " To start the client specify: " );
Console.WriteLine( " clientSync machineName [serverName] " );
Environment.Exit( 1 );
}
public static void Main( string [] args)
{
string machineName = null ;
machineName = " 192.168.20.139 " ;
try
{
RunClient(machineName);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
}
}
}
运行就可以了。
注意的是证书的取得， 客户端有个向服务器验证证书的方法：
public static bool ValidateServerCertificate(
object sender,
X509Certificate certificate,
X509Chain chain,
SslPolicyErrors sslPolicyErrors)
{
if (sslPolicyErrors == SslPolicyErrors.None)
return true ;
Console.WriteLine( " Certificate error: {0} " , sslPolicyErrors);
// Do not allow this client to communicate with unauthenticated servers.
return false ;
}
如果上面返回的SslPolicyErrors枚举值不是None你就应该检查你的证书是否正确， 是否添加到信任里面。
转：http://www.cnblogs.com/whtydn/archive/2009/12/23/1630750.html