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+/* PrivateKeyEntry.java --
+ Copyright (C) 2003, 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.crypto.keyring;
+
+import gnu.java.security.key.IKeyPairCodec;
+import gnu.java.security.key.KeyPairCodecFactory;
+import gnu.java.security.key.dss.DSSPrivateKey;
+import gnu.java.security.key.rsa.GnuRSAPrivateKey;
+
+import gnu.javax.crypto.key.GnuSecretKey;
+import gnu.javax.crypto.key.dh.GnuDHPrivateKey;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.security.Key;
+import java.security.KeyFactory;
+import java.security.PrivateKey;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.util.Date;
+
+/**
+ * <p>An immutable class representing a private or secret key entry.</p>
+ *
+ * @version $Revision: 1.1 $
+ */
+public final class PrivateKeyEntry extends PrimitiveEntry
+{
+
+ // Constants and variables
+ // -------------------------------------------------------------------------
+
+ public static final int TYPE = 7;
+
+ /** The key. */
+ private Key key;
+
+ // Constructor(s)
+ // -------------------------------------------------------------------------
+
+ /**
+ * <p>Creates a new key entry.</p>
+ *
+ * @param key The key.
+ * @param creationDate The entry creation date.
+ * @param properties The entry properties.
+ * @throws IllegalArgumentException If any parameter is null.
+ */
+ public PrivateKeyEntry(Key key, Date creationDate, Properties properties)
+ {
+ super(TYPE, creationDate, properties);
+
+ if (key == null)
+ {
+ throw new IllegalArgumentException("no private key");
+ }
+ if (!(key instanceof PrivateKey) && !(key instanceof GnuSecretKey))
+ {
+ throw new IllegalArgumentException("not a private or secret key");
+ }
+ this.key = key;
+ }
+
+ private PrivateKeyEntry()
+ {
+ super(TYPE);
+ }
+
+ // Class methods
+ // -------------------------------------------------------------------------
+
+ public static PrivateKeyEntry decode(DataInputStream in) throws IOException
+ {
+ PrivateKeyEntry entry = new PrivateKeyEntry();
+ entry.defaultDecode(in);
+ String type = entry.properties.get("type");
+ if (type == null)
+ {
+ throw new MalformedKeyringException("no key type");
+ }
+ if (type.equalsIgnoreCase("RAW-DSS"))
+ {
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dss");
+ entry.key = coder.decodePrivateKey(entry.payload);
+ }
+ else if (type.equalsIgnoreCase("RAW-RSA"))
+ {
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("rsa");
+ entry.key = coder.decodePrivateKey(entry.payload);
+ }
+ else if (type.equalsIgnoreCase("RAW-DH"))
+ {
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dh");
+ entry.key = coder.decodePrivateKey(entry.payload);
+ }
+ else if (type.equalsIgnoreCase("RAW"))
+ {
+ entry.key = new GnuSecretKey(entry.payload, null);
+ }
+ else if (type.equalsIgnoreCase("PKCS8"))
+ {
+ try
+ {
+ KeyFactory kf = KeyFactory.getInstance("RSA");
+ entry.key = kf.generatePrivate(new PKCS8EncodedKeySpec(
+ entry.payload));
+ }
+ catch (Exception x)
+ {
+ }
+ if (entry.key == null)
+ {
+ try
+ {
+ KeyFactory kf = KeyFactory.getInstance("DSA");
+ entry.key = kf.generatePrivate(new PKCS8EncodedKeySpec(
+ entry.payload));
+ }
+ catch (Exception x)
+ {
+ }
+ if (entry.key == null)
+ {
+ throw new MalformedKeyringException(
+ "could not decode PKCS#8 key");
+ }
+ }
+ }
+ else
+ {
+ throw new MalformedKeyringException("unsupported key type " + type);
+ }
+ return entry;
+ }
+
+ // Instance methods
+ // -------------------------------------------------------------------------
+
+ /**
+ * <p>Returns this entry's key.</p>
+ *
+ * @return The key.
+ */
+ public Key getKey()
+ {
+ return key;
+ }
+
+ protected void encodePayload() throws IOException
+ {
+ String format = key.getFormat();
+ if (key instanceof DSSPrivateKey)
+ {
+ properties.put("type", "RAW-DSS");
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dss");
+ payload = coder.encodePrivateKey((PrivateKey) key);
+ }
+ else if (key instanceof GnuRSAPrivateKey)
+ {
+ properties.put("type", "RAW-RSA");
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("rsa");
+ payload = coder.encodePrivateKey((PrivateKey) key);
+ }
+ else if (key instanceof GnuDHPrivateKey)
+ {
+ properties.put("type", "RAW-DH");
+ IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dh");
+ payload = coder.encodePrivateKey((PrivateKey) key);
+ }
+ else if (key instanceof GnuSecretKey)
+ {
+ properties.put("type", "RAW");
+ payload = key.getEncoded();
+ }
+ else if (format != null && format.equals("PKCS#8"))
+ {
+ properties.put("type", "PKCS8");
+ payload = key.getEncoded();
+ }
+ else
+ {
+ throw new IllegalArgumentException("unsupported private key");
+ }
+ }
+}