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Ich habe kürzlich versucht, einen SSL-verschlüsselten Server/Client in C# zu machen.Wie identifiziere ich meinen Server-Namen für die Server-Authentifizierung durch Client in C#
ich this Tutorial auf MSDN gefolgt sind jedoch erforderlich, ein Zertifikat für den Server und Client-Nutzung unter Verwendung erstellt werden makecert.exe so fand ich ein Beispiel und es erstellt das Zertifikat fein:
makecert -sr LocalMachine -ss My -n "CN=Test" -sky exchange -sk 123456 c:/Test.cer
aber jetzt ist das Problem der Server gestartet und wartet auf Kunden, wenn der Kunde es verwendet die Maschinennamen verbindet, das so weit wie ich meine IP in diesem Fall sammeln kann:
127.0.0.1
, und dann bedarf es der Server Name, die den Server Name auf dem Zertifikat übereinstimmen müssen (Test.cer). Ich habe mehrere Kombinationen (wie „Test“ „Localmachine“, „127.0.0.1“ ausprobiert, aber kann nicht scheinen, um die Kunden Servernamen gegeben bekommen somit passen die Verbindung erlaubt, die Fehler, die ich bekommen ist.
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors Exception: the remote certificate is invalid according to the validation procedure
hier ist der Code ich verwende es nur in der Tatsache, von dem MSDN Beispiel unterscheidet sich, dass ich das Zertifikat Pfad für den Server in der App und dem Maschinennamen und den Servernamen des Clients zu vergeben:
SslTcpServer .cs
using System;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Net.Security;
using System.Security.Authentication;
using System.Text;
using System.Security.Cryptography.X509Certificates;
using System.IO;
namespace Examples.System.Net
{
public sealed class SslTcpServer
{
static X509Certificate serverCertificate = null;
// The certificate parameter specifies the name of the file
// containing the machine certificate.
public static void RunServer(string certificate)
{
serverCertificate = X509Certificate.CreateFromCertFile(certificate);
// Create a TCP/IP (IPv4) socket and listen for incoming connections.
TcpListener listener = new TcpListener(IPAddress.Any, 8080);
listener.Start();
while (true)
{
Console.WriteLine("Waiting for a client to connect...");
// Application blocks while waiting for an incoming connection.
// Type CNTL-C to terminate the server.
TcpClient client = listener.AcceptTcpClient();
ProcessClient(client);
}
}
static void ProcessClient(TcpClient client)
{
// A client has connected. Create the
// SslStream using the client's network stream.
SslStream sslStream = new SslStream(
client.GetStream(), false);
// Authenticate the server but don't require the client to authenticate.
try
{
sslStream.AuthenticateAsServer(serverCertificate,
false, SslProtocols.Tls, true);
// Display the properties and settings for the authenticated stream.
DisplaySecurityLevel(sslStream);
DisplaySecurityServices(sslStream);
DisplayCertificateInformation(sslStream);
DisplayStreamProperties(sslStream);
// Set timeouts for the read and write to 5 seconds.
sslStream.ReadTimeout = 5000;
sslStream.WriteTimeout = 5000;
// Read a message from the client.
Console.WriteLine("Waiting for client message...");
string messageData = ReadMessage(sslStream);
Console.WriteLine("Received: {0}", messageData);
// Write a message to the client.
byte[] message = Encoding.UTF8.GetBytes("Hello from the server.<EOF>");
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
{
// The client stream will be closed with the sslStream
// because we specified this behavior when creating
// the sslStream.
sslStream.Close();
client.Close();
}
}
static string ReadMessage(SslStream sslStream)
{
// Read the message sent by the client.
// The client signals the end of the message using the
// "<EOF>" marker.
byte[] buffer = new byte[2048];
StringBuilder messageData = new StringBuilder();
int bytes = -1;
do
{
// Read the client's test message.
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 or an empty message.
if (messageData.ToString().IndexOf("<EOF>") != -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.");
}
// Display the properties of the client's certificate.
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.");
}
}
public static void Main(string[] args)
{
string certificate = "c:/Test.cer";
SslTcpServer.RunServer(certificate);
}
}
}
SslTcpClient.cs
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, string serverName)
{
// Create a TCP/IP client socket.
// machineName is the host running the server application.
TcpClient client = new TcpClient(machineName, 8080);
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.
try
{
sslStream.AuthenticateAsClient(serverName);
}
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();
}
public static void Main(string[] args)
{
string serverCertificateName = null;
string machineName = null;
/*
// User can specify the machine name and server name.
// Server name must match the name on the server's certificate.
machineName = args[0];
if (args.Length < 2)
{
serverCertificateName = machineName;
}
else
{
serverCertificateName = args[1];
}*/
machineName = "127.0.0.1";
serverCertificateName = "David-PC";// tried Test, LocalMachine and 127.0.0.1
SslTcpClient.RunClient(machineName, serverCertificateName);
Console.ReadKey();
}
}
}
EDIT:
Der Server nimmt die Kunden-Verbindung und alles, aber es mal aus, während für die Kunden warten, um eine Nachricht zu senden. (Der Client wird nicht mit dem Server aufgrund des Servernamen im Zertifikat authentifiziert verschieden von dem, die ich in dem Client geliefert) auch das ist meine Gedanken über ihnen nur
UPDATE zu klären:
Nach einer Antwort, die ich haben die certficiate Hersteller geändert:
makecert -sr LocalMachine -ss My -n "CN=localhost" -sky exchange -sk 123456 c:/Test.cer and in my client I have:
machineName = "127.0.0.1";
serverCertificateName = "localhost";// tried Test, LocalMachine and 127.0.0.1
SslTcpClient.RunClient(machineName, serverCertificateName);
jetzt bekomme ich die Ausnahme:
RemoteCertificateChainErrors Exception: the remote certificate is invalid according to the validation procedure
die hier vorkommenden:
// The server name must match the name on the server certificate.
try
{
sslStream.AuthenticateAsClient(serverName);
}
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. "+ e.Message);
client.Close();
return;
}
Verwenden Sie ein Zertifikat für den Client? Was ist der Wert von 'serverName' im späteren Code-Snippet? Bitte geben Sie auch den Wert von 'sslPolicyErrors' in der Validierungsmethode des Clients an. –