Cliente que se conecta a un servidor SSL con certificados autofirmados

Question

Estoy completamente atrapado aquí. Tengo un código de cliente Java que necesita conectarse a un servidor SSL con certificados autofirmados.

Aparece el problema solo cuando desactivo el soporte SSLv2 en el lado del servidor.

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; 
    } 
} 

Las huellas son

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) 

En el lado del servidor puedo ver los próximos rastros:

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} 

Si habilito SSL2 entonces veo

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} 

Y todo funciona bien

también he conocido que no es algo en el lado del servidor, ya que la conexión con otro software funciona bien.

¿Alguna idea de qué estoy haciendo mal?

¿Alguien sabe lo que significa "leer cliente hola A/B"?

Gracias

ACTUALIZACIÓN - FIJA

El SSLSocketFactory necesita para ser sustituido por este nuevo TLSSocketFactory.

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

Retire SSLv2ClientHello de la lista de protocolos habilitados en el cliente.