Client, der eine Verbindung zu einem SSL-Server mit selbstsignierten Zertifikaten herstellt

Question

Ich bin hier völlig festgefahren. Ich habe einen Java-Client-Code, der eine Verbindung zu einem SSL-Server mit selbstsignierten Zertifikaten herstellen muss.

Das Problem nur erscheint, wenn ich SSLv2-Unterstützung auf der Serverseite deaktivieren.

private static DefaultHttpClient createHttpClient(int port) { 
    try { 
     java.lang.System.setProperty(
       "sun.security.ssl.allowUnsafeRenegotiation", "true"); 

     // First create a trust manager that won't care. 
     X509TrustManager trustManager = new X509TrustManager() { 
      public void checkClientTrusted(X509Certificate[] chain, 
        String authType) throws CertificateException { 
       // Don't do anything. 
      } 

      public void checkServerTrusted(X509Certificate[] chain, 
        String authType) throws CertificateException { 
       // Don't do anything. 
      } 

      public X509Certificate[] getAcceptedIssuers() { 
       return new java.security.cert.X509Certificate[0]; 
      } 
     }; 

     // Now put the trust manager into an SSLContext. 
     // Supported: SSL, SSLv2, SSLv3, TLS, TLSv1, TLSv1.1 
     SSLContext sslContext = SSLContext.getInstance("SSLv3"); 
     sslContext.init(null, new TrustManager[] { trustManager }, 
       new SecureRandom()); 

     // Use the above SSLContext to create your socket factory 
     // (I found trying to extend the factory a bit difficult due to a 
     // call to createSocket with no arguments, a method which doesn't 
     // exist anywhere I can find, but hey-ho). 
     SSLSocketFactory sf = new SSLSocketFactory(sslContext); 
     // Accept any hostname, so the self-signed certificates don't fail 
     sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); 

     // Register our new socket factory with the typical SSL port and the 
     // correct protocol name. 
     //Scheme httpsScheme = new Scheme("https", sf, port); 
     SchemeRegistry schemeRegistry = new SchemeRegistry(); 
     schemeRegistry.register(new Scheme("https", sf, port)); 

     HttpParams params = new BasicHttpParams(); 
     ClientConnectionManager cm = new SingleClientConnManager(params, 
       schemeRegistry); 

     return new DefaultHttpClient(cm, params); 
    } catch (Exception ex) { 
     Log.error("ERROR Creating SSL Connection: " + ex.getMessage()); 

     return null; 
    } 
} 

Die Spuren sind

trigger seeding of SecureRandom 
done seeding SecureRandom 
keyStore is : 
keyStore type is : jks 
keyStore provider is : 
init keystore 
init keymanager of type SunX509 
trustStore is: /usr/lib/jvm/java-6-openjdk/jre/lib/security/cacerts 
trustStore type is : jks 
trustStore provider is : 
init truststore 
adding as trusted cert: 
x 
x 
x 

trigger seeding of SecureRandom 
done seeding SecureRandom 
2010-12-16 17:25:08,705 [DEBUG][gwt-log][ 5] Connecting: 1 
Allow unsafe renegotiation: true 
Allow legacy hello messages: true 
Is initial handshake: true 
Is secure renegotiation: false 
%% No cached client session 
*** ClientHello, TLSv1 
RandomCookie: GMT: 1292516708 bytes = { 205, 187, 238, 65, 164, 126, 107, 173, 51, 124, 60, 146, 4, 127, 165, 246, 216, 181, 106, 72, 9, 214, 243, 64, 34, 117, 141, 76 } 
Session ID: {} 
Cipher Suites: [SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_ECDH_ECDSA_WITH_RC4_128_SHA, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDH_RSA_WITH_RC4_128_SHA, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_256_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, SSL_RSA_WITH_DES_CBC_SHA, SSL_DHE_RSA_WITH_DES_CBC_SHA, SSL_DHE_DSS_WITH_DES_CBC_SHA, SSL_RSA_EXPORT_WITH_RC4_40_MD5, SSL_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA, TLS_EMPTY_RENEGOTIATION_INFO_SCSV] 
Compression Methods: { 0 } 
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1} 
Extension ec_point_formats, formats: [uncompressed] 
*** 
[write] MD5 and SHA1 hashes: len = 177 
0000: 01 00 00 AD 03 01 4D 0A 3D 64 CD BB EE 41 A4 7E ......M.=d...A.. 
xxxxxxx 
00B0: 00             . 
btpool0-0, WRITE: TLSv1 Handshake, length = 177 
[write] MD5 and SHA1 hashes: len = 173 
0000: 01 03 01 00 84 00 00 00 20 00 00 04 01 00 80 00 ........ ....... 
xxxxxxx 
00A0: F6 D8 B5 6A 48 09 D6 F3 40 22 75 8D 4C   ...jH...@"u.L 
btpool0-0, WRITE: SSLv2 client hello message, length = 173 
[Raw write]: length = 175 
0000: 80 AD 01 03 01 00 84 00 00 00 20 00 00 04 01 00 .......... ..... 
xxxxxxx 
00A0: 7F A5 F6 D8 B5 6A 48 09 D6 F3 40 22 75 8D 4C  .....jH...@"u.L 
btpool0-0, handling exception: java.net.SocketException: Connection reset 
btpool0-0, SEND TLSv1 ALERT: fatal, description = unexpected_message 
btpool0-0, WRITE: TLSv1 Alert, length = 2 
btpool0-0, Exception sending alert: java.net.SocketException: Broken pipe 
btpool0-0, called closeSocket() 
btpool0-0, IOException in getSession(): java.net.SocketException: Connection reset 
2010-12-16 17:25:08,890 [DEBUG][gwt-log][ 6] peer not authenticated 
javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated 
    at sun.security.ssl.SSLSessionImpl.getPeerCertificates(SSLSessionImpl.java:371) 
    at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:128) 
    at org.apache.http.conn.ssl.SSLSocketFactory.createSocket(SSLSocketFactory.java:399) 
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:143) 
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149) 
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:108) 
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415) 
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:641) 
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:731) 
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:709) 
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:700) 

[Fatal Error] :1:1: Premature end of file. 
Finalizer, called close() 
Finalizer, called closeInternal(true) 

Auf der Serverseite kann ich die nächsten Spuren sehen:

info sock48 handshake start {before/accept initialization} 
info sock48 accept loop {before/accept initialization} 
info sock48 accept exit {SSLv3 read client hello B} 
error sock48 {wrong version number} 

Wenn ich SSL2 aktivieren dann sehe ich

info sock47 handshake start {before/accept initialization} 
info sock47 accept loop {before/accept initialization} 
info sock47 accept loop {SSLv3 read client hello A} 
info sock47 accept loop {SSLv3 write server hello A} 
info sock47 accept loop {SSLv3 write certificate A} 
info sock47 accept loop {SSLv3 write server done A} 
info sock47 accept loop {SSLv3 flush data} 
info sock47 accept exit {SSLv3 read client certificate A} 
info sock47 accept exit {SSLv3 read client certificate A} 
info sock47 accept loop {SSLv3 read client key exchange A} 
info sock47 accept loop {SSLv3 read finished A} 
info sock47 accept loop {SSLv3 write change cipher spec A} 
info sock47 accept loop {SSLv3 write finished A} 
info sock47 accept loop {SSLv3 flush data} 
info sock47 handshake done {SSL negotiation finished successfully} 
info sock47 accept exit {SSL negotiation finished successfully} 
info sock47 alert write {close notify} 

Und Alles funktioniert gut.

Ich weiß auch, das ist nicht etwas auf der Serverseite, da die Verbindung mit anderer Software funktioniert ok.

Irgendeine Idee was mache ich falsch?

Auch weiß jemand, was diese "Client lesen Hallo A/B" bedeutet?

Dank

UPDATE - FIXED

Die SSLSocketFactory muss durch diese neue TLSSocketFactory ersetzt werden.

public class TLSSocketFactory extends SSLSocketFactory { 

private final javax.net.ssl.SSLSocketFactory socketfactory; 

public TLSSocketFactory(SSLContext sslContext) { 
    super(sslContext); 

    this.socketfactory = sslContext.getSocketFactory(); 
} 

public Socket createSocket() throws IOException { 
    SSLSocket socket = (SSLSocket) super.createSocket(); 

    socket.setEnabledProtocols(new String[] {"SSLv3, TLSv1"}); 

    return socket; 
} 

public Socket createSocket(
     final Socket socket, 
     final String host, 
     final int port, 
     final boolean autoClose 
    ) throws IOException, UnknownHostException { 

    SSLSocket sslSocket = (SSLSocket) this.socketfactory.createSocket(
      socket, 
      host, 
      port, 
      autoClose 
    ); 

    sslSocket.setEnabledProtocols(new String[] {"SSLv3", "TLSv1"}); 

    getHostnameVerifier().verify(host, sslSocket); 

    return sslSocket; 
} 

}

Answer 1

entfernen SSLv2ClientHello aus der Liste der aktivierten Protokolle auf dem Client.