mirror of git://gcc.gnu.org/git/gcc.git
133 lines
4.4 KiB
Java
133 lines
4.4 KiB
Java
/* ClientKeyExchange.java -- SSL ClientKeyExchange message.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.net.ssl.provider;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/**
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* The client key exchange message.
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*
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* <pre>
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struct {
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select (KeyExchangeAlgorithm) {
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case rsa: EncryptedPreMasterSecret;
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case diffie_hellman: ClientDiffieHellmanPublic;
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} exchange_keys;
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} ClientKeyExchange;</pre>
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*/
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public class ClientKeyExchange implements Handshake.Body
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{
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// Fields.
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// -------------------------------------------------------------------------
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protected ByteBuffer buffer;
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protected final CipherSuite suite;
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protected final ProtocolVersion version;
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// Constructors.
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// -------------------------------------------------------------------------
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public ClientKeyExchange (final ByteBuffer buffer, final CipherSuite suite,
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final ProtocolVersion version)
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{
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suite.getClass();
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version.getClass ();
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this.buffer = buffer.duplicate().order(ByteOrder.BIG_ENDIAN);
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this.suite = suite;
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this.version = version;
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}
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// Instance methods.
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// -------------------------------------------------------------------------
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public ExchangeKeys exchangeKeys ()
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{
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KeyExchangeAlgorithm alg = suite.keyExchangeAlgorithm();
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if (alg == KeyExchangeAlgorithm.RSA)
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return new EncryptedPreMasterSecret(buffer, version);
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else if (alg == KeyExchangeAlgorithm.DH_anon
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|| alg == KeyExchangeAlgorithm.DHE_DSS
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|| alg == KeyExchangeAlgorithm.DHE_RSA)
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return new ClientDiffieHellmanPublic(buffer.duplicate());
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else if (alg == KeyExchangeAlgorithm.DHE_PSK)
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return new ClientDHE_PSKParameters(buffer.duplicate());
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else if (alg == KeyExchangeAlgorithm.PSK)
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return new ClientPSKParameters(buffer.duplicate());
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else if (alg == KeyExchangeAlgorithm.RSA_PSK)
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return new ClientRSA_PSKParameters(buffer.duplicate());
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else if (alg == KeyExchangeAlgorithm.NONE)
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return new EmptyExchangeKeys();
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throw new IllegalArgumentException("unsupported key exchange: " + alg);
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}
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public int length()
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{
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if (suite.keyExchangeAlgorithm() == KeyExchangeAlgorithm.NONE)
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return 0;
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return exchangeKeys().length();
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}
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public String toString ()
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{
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return toString (null);
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}
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public String toString (final String prefix)
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{
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StringWriter str = new StringWriter();
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PrintWriter out = new PrintWriter(str);
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if (prefix != null)
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out.print (prefix);
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out.println("struct {");
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String subprefix = " ";
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if (prefix != null)
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subprefix = prefix + subprefix;
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out.println (exchangeKeys ().toString (subprefix));
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if (prefix != null)
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out.print (prefix);
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out.println("} ClientKeyExchange;");
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return str.toString();
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}
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}
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