[英]How to load Client certificate during ssl connection for mutual authentication?
[英]Netty client does not send client certificate during SSL handshake that requires mutual authentication
我是Netty的新手,我嘗試編寫使用雙向身份驗證的echo服務器和客戶端。 不幸的是,它無法正常工作,客戶端沒有發送其客戶端證書,並且服務器按預期斷開了連接。 下面是到目前為止我所做的工作和客戶端代碼的概述-可能包含一些錯誤,或者我錯過了一些重要的事情。 感謝您完成所有這一切!
那就是我所擁有的:
客戶代碼:
通道處理程序:
package info.junius.tutorial.echo.netty.tls;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.CharsetUtil;
public class EchoClientHandler extends SimpleChannelInboundHandler<ByteBuf>
{
@Override
public void channelRead0(ChannelHandlerContext ctx, ByteBuf in)
{
System.out.println("CLIENT: Received echo from server:\n" + in.toString(CharsetUtil.UTF_8));
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
{
cause.printStackTrace();
ctx.close();
}
}
通道初始化程序:
package info.junius.tutorial.echo.netty.tls;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.handler.ssl.SslContext;
public class ClientChannelInitializer extends ChannelInitializer<Channel>
{
private final SslContext context;
private final String peerHost;
private final int peerPort;
public ClientChannelInitializer(SslContext context, String peerHost, int peerPort)
{
this.context = context;
this.peerHost = peerHost;
this.peerPort = peerPort;
}
@Override
protected void initChannel(Channel channel) throws Exception
{
// Add SSL handler first to encrypt and decrypt everything.
channel.pipeline().addLast(this.context.newHandler(channel.alloc(), this.peerHost, this.peerPort));
// and then business logic.
channel.pipeline().addLast(new EchoClientHandler());
}
}
回顯客戶端:
package info.junius.tutorial.echo.netty.tls;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
public class EchoClient
{
private final String host;
private final int port;
public EchoClient(String host, int port)
{
super();
this.host = host;
this.port = port;
}
public static void main(String[] args) throws Exception
{
if (args.length != 2)
{
System.err.println("Usage: " + EchoClient.class.getSimpleName() + " <host> <port>");
}
else
{
// Security.addProvider(new BouncyCastleProvider());
String host = args[0];
int port = Integer.parseInt(args[1]);
new EchoClient(host, port).start();
}
}
public void start() throws Exception
{
TlsContextUtil tlsContextUtil = new TlsContextUtil();
ChannelInitializer<Channel> channelInitializer = new ClientChannelInitializer(tlsContextUtil.getClientContext(), this.host, this.port);
EventLoopGroup group = new NioEventLoopGroup();
try
{
Bootstrap b = new Bootstrap();
b.group(group).channel(NioSocketChannel.class).handler(channelInitializer);
Channel channel = b.connect(this.host, this.port).sync().channel();
ChannelFuture writeFuture = channel.writeAndFlush("Hello from netty client!\n");
// channel.closeFuture().sync();
writeFuture.sync();
}
finally
{
group.shutdownGracefully().sync();
}
}
}
還有一個返回SslContext的實用程序類:
...
public SslContext getClientContext() throws IOException
{
SslContext sslContext = null;
try
{
// truststore
TrustManagerFactory tmf = TrustManagerFactory.getInstance("PKIX", "SunJSSE");
tmf.init(this.getKeystore(TRUSTSTORE));
// keystore holding client certificate
KeyManagerFactory kmf = KeyManagerFactory.getInstance("PKIX", "SunJSSE");
kmf.init(this.getKeystore(CLIENT_KEYSTORE), KEYSTORE_PW);
SslContextBuilder builder = SslContextBuilder.forClient().keyManager(kmf).trustManager(tmf).ciphers(PFS_CIPHERS);
// build context
sslContext = builder.build();
}
catch (NoSuchAlgorithmException
| NoSuchProviderException
| KeyStoreException
| IllegalStateException
| UnrecoverableKeyException e)
{
throw new IOException("Unable to create client TLS context", e);
}
return sslContext;
}
...
VM參數:
-Djavax.net.debug=all -Djava.security.debug="certpath crl" -Dcom.sun.net.ssl.checkRevocation=true -Dcom.sun.security.enableCRLDP=true
我非常有信心,我的錯誤一定是在Netty客戶端代碼中,因為僅使用JSSE時系統運行良好。 任何幫助深表感謝!
干杯,安迪
好,我已經開始工作了。 實際上是我的客戶代碼錯了(該代碼基於Netty附帶的安全聊天示例)。 因此,我將其更改為回顯示例中使用的版本:
EchoClientHandler:
@Override
public void channelActive(ChannelHandlerContext ctx)
{
// When notified that the channel is active send a message.
System.out.println("CLIENT: Sending request to server...");
ctx.writeAndFlush(Unpooled.copiedBuffer("Mein Schnitzel ist kaputt!\n", CharsetUtil.UTF_8));
}
和EchoClient:
try
{
Bootstrap b = new Bootstrap();
b.group(group).channel(NioSocketChannel.class).handler(channelInitializer);
ChannelFuture f = b.connect(this.host, this.port).sync();
f.channel().closeFuture().sync();
}
finally
{
group.shutdownGracefully().sync();
}
先前的代碼斷開時間太早,因此握手從未完成。
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