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+/* SSLCipherSuite.java -- an SSL cipher suite.
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.net.ssl;
+
+import gnu.java.security.Engine;
+
+import java.lang.reflect.InvocationTargetException;
+import java.nio.ByteBuffer;
+import java.security.NoSuchAlgorithmException;
+import java.security.Provider;
+import java.security.Security;
+
+/**
+ * An SSL cipher suite.
+ */
+public abstract class SSLCipherSuite
+{
+ private static final String SERVICE = "SSLCipherSuite";
+ private final String algorithm;
+ private final byte[] id;
+ private final SSLProtocolVersion version;
+ private Provider provider;
+
+ protected SSLCipherSuite (final String algorithm, final byte[] id,
+ final SSLProtocolVersion version)
+ {
+ this.algorithm = algorithm;
+ if (id.length != 2)
+ throw new IllegalArgumentException ("cipher suite ID must be two bytes");
+ this.id = (byte[]) id.clone ();
+ this.version = version;
+ }
+
+ public static final SSLCipherSuite getInstance (SSLProtocolVersion version, byte[] id)
+ throws NoSuchAlgorithmException
+ {
+ return getInstance (version + "-" + ((id[0] & 0xFF) + "/" + (id[1] & 0xFF)));
+ }
+
+ public static final SSLCipherSuite getInstance (SSLProtocolVersion version,
+ byte[] id, Provider provider)
+ throws NoSuchAlgorithmException
+ {
+ return getInstance (version + "-" + (id[0] & 0xFF) + "/" + (id[1] & 0xFF), provider);
+ }
+
+ public static final SSLCipherSuite getInstance (String name)
+ throws NoSuchAlgorithmException
+ {
+ Provider[] providers = Security.getProviders ();
+ for (int i = 0; i < providers.length; i++)
+ {
+ try
+ {
+ return getInstance (name, providers[i]);
+ }
+ catch (NoSuchAlgorithmException nsae)
+ {
+ // Ignore.
+ }
+ }
+
+ throw new NoSuchAlgorithmException (SERVICE + ": " + name);
+ }
+
+ public static final SSLCipherSuite getInstance (String name, Provider provider)
+ throws NoSuchAlgorithmException
+ {
+ SSLCipherSuite suite = null;
+ try
+ {
+ suite = (SSLCipherSuite) Engine.getInstance (SERVICE, name, provider);
+ suite.provider = provider;
+ }
+ catch (InvocationTargetException ite)
+ {
+ // XXX
+ NoSuchAlgorithmException nsae = new NoSuchAlgorithmException (name);
+ nsae.initCause (ite);
+ throw nsae;
+ }
+ return suite;
+ }
+
+ public final String getAlgorithm ()
+ {
+ return algorithm;
+ }
+
+ public final byte[] getId ()
+ {
+ return (byte[]) id.clone ();
+ }
+
+ public final Provider getProvider ()
+ {
+ return provider;
+ }
+
+ public final SSLProtocolVersion getProtocolVersion ()
+ {
+ return version;
+ }
+
+ public abstract void encipher (ByteBuffer in, ByteBuffer out);
+}