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最近C＃でSSL暗号化サーバー/クライアントを作成しようとしています。クライアントでサーバー認証のサーバー名を特定する方法C＃
私はMSDNにthisのチュートリアルに従ってきたが、しかし、それはmakecert.exeを使用して、サーバーとクライアントの使用のために作成する証明書を必要と私は例を発見し、それが正常に証明書を作成しました：
をmakecert -sr LocalMachine -ss My -n "CN=Test" -sky exchange -sk 123456 c:/Test.cer
が、クライアントは、それがどのようにこれまで私が収集できるようマシン名を使用しています。この場合、私のIPで接続したときに、今の問題は、クライアント用のサーバが起動して待機している：
127.0.0.1
、そしてそれが証明書にサーバ名と一致している必要がありサーバ名（Test.cer）が必要です。私は、このような「テスト」「LOCALMACHINE」、「127.0.0.1」のように複数の組み合わせを（試してみましたが、クライアントが接続を許可するように一致させるためにサーバー名を与え得るように見えるカント私が手にエラーがある：。
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors Exception: the remote certificate is invalid according to the validation procedure
SslTcpServer：ここ
は、私はそれだけで私はあまりにもアプリでサーバとクライアントのマシン名とサーバー名の証明書パスを割り当てることにMSDNの例と異なる使用しているコードです.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：
メッセージを送信するためにクライアントを待っている間に、サーバはそれが出倍のクライアント接続と、すべてを受け入れますが。回答Iによる
：ちょうど
UPDATEを明確にするだけでなく、その上に自分の考えthatsの（クライアントが文句を言わない私がクライアントに提供さ1異なっているため、証明書内のサーバー名にサーバーを使用して認証します）今、私は例外を取得
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);
：
にcertficiateメーカーを変更しましたここで発生しているRemoteCertificateChainErrors Exception: the remote certificate is invalid according to the validation procedure
：
// 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;
}
あなたはクライアントの証明書を使用していますか？後者のコードスニペットの 'serverName'の値は何ですか？また、 'sslPolicyErrors'の値をクライアントの検証メソッドに投稿してください。 –