143 lines
4.4 KiB
Java
143 lines
4.4 KiB
Java
/* SSLCipherSuite.java -- an SSL cipher suite.
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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;
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import gnu.java.security.Engine;
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import java.lang.reflect.InvocationTargetException;
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import java.nio.ByteBuffer;
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import java.security.NoSuchAlgorithmException;
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import java.security.Provider;
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import java.security.Security;
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/**
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* An SSL cipher suite.
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*/
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public abstract class SSLCipherSuite
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{
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private static final String SERVICE = "SSLCipherSuite";
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private final String algorithm;
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private final byte[] id;
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private final SSLProtocolVersion version;
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private Provider provider;
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protected SSLCipherSuite (final String algorithm, final byte[] id,
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final SSLProtocolVersion version)
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{
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this.algorithm = algorithm;
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if (id.length != 2)
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throw new IllegalArgumentException ("cipher suite ID must be two bytes");
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this.id = (byte[]) id.clone ();
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this.version = version;
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}
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public static final SSLCipherSuite getInstance (SSLProtocolVersion version, byte[] id)
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throws NoSuchAlgorithmException
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{
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return getInstance (version + "-" + ((id[0] & 0xFF) + "/" + (id[1] & 0xFF)));
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}
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public static final SSLCipherSuite getInstance (SSLProtocolVersion version,
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byte[] id, Provider provider)
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throws NoSuchAlgorithmException
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{
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return getInstance (version + "-" + (id[0] & 0xFF) + "/" + (id[1] & 0xFF), provider);
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}
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public static final SSLCipherSuite getInstance (String name)
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throws NoSuchAlgorithmException
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{
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Provider[] providers = Security.getProviders ();
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for (int i = 0; i < providers.length; i++)
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{
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try
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{
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return getInstance (name, providers[i]);
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}
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catch (NoSuchAlgorithmException nsae)
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{
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// Ignore.
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}
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}
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throw new NoSuchAlgorithmException (SERVICE + ": " + name);
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}
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public static final SSLCipherSuite getInstance (String name, Provider provider)
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throws NoSuchAlgorithmException
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{
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SSLCipherSuite suite = null;
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try
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{
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suite = (SSLCipherSuite) Engine.getInstance (SERVICE, name, provider);
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suite.provider = provider;
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}
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catch (InvocationTargetException ite)
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{
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// XXX
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NoSuchAlgorithmException nsae = new NoSuchAlgorithmException (name);
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nsae.initCause (ite);
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throw nsae;
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}
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return suite;
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}
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public final String getAlgorithm ()
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{
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return algorithm;
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}
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public final byte[] getId ()
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{
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return (byte[]) id.clone ();
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}
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public final Provider getProvider ()
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{
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return provider;
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}
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public final SSLProtocolVersion getProtocolVersion ()
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{
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return version;
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}
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public abstract void encipher (ByteBuffer in, ByteBuffer out);
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}
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