| /* PublicKeyEntry.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.DSSPublicKey; |
| import gnu.java.security.key.rsa.GnuRSAPublicKey; |
| import gnu.javax.crypto.key.dh.GnuDHPublicKey; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.security.KeyFactory; |
| import java.security.PublicKey; |
| import java.security.spec.X509EncodedKeySpec; |
| import java.util.Date; |
| |
| public final class PublicKeyEntry |
| extends PrimitiveEntry |
| { |
| public static final int TYPE = 6; |
| private PublicKey key; |
| |
| public PublicKeyEntry(PublicKey key, Date creationDate, Properties properties) |
| { |
| super(TYPE, creationDate, properties); |
| if (key == null) |
| throw new IllegalArgumentException("no key specified"); |
| this.key = key; |
| } |
| |
| private PublicKeyEntry() |
| { |
| super(TYPE); |
| } |
| |
| public static PublicKeyEntry decode(DataInputStream in) throws IOException |
| { |
| PublicKeyEntry entry = new PublicKeyEntry(); |
| 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.decodePublicKey(entry.payload); |
| } |
| else if (type.equalsIgnoreCase("RAW-RSA")) |
| { |
| IKeyPairCodec coder = KeyPairCodecFactory.getInstance("rsa"); |
| entry.key = coder.decodePublicKey(entry.payload); |
| } |
| else if (type.equalsIgnoreCase("RAW-DH")) |
| { |
| IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dh"); |
| entry.key = coder.decodePublicKey(entry.payload); |
| } |
| else if (type.equalsIgnoreCase("X.509")) |
| { |
| try |
| { |
| KeyFactory kf = KeyFactory.getInstance("RSA"); |
| entry.key = kf.generatePublic(new X509EncodedKeySpec(entry.payload)); |
| } |
| catch (Exception x) |
| { |
| } |
| if (entry.key == null) |
| { |
| try |
| { |
| KeyFactory kf = KeyFactory.getInstance("DSA"); |
| entry.key = kf.generatePublic(new X509EncodedKeySpec(entry.payload)); |
| } |
| catch (Exception x) |
| { |
| } |
| if (entry.key == null) |
| throw new MalformedKeyringException("could not decode X.509 key"); |
| } |
| } |
| else |
| throw new MalformedKeyringException("unsupported public key type: " + type); |
| return entry; |
| } |
| |
| /** |
| * Returns the public key. |
| * |
| * @return The public key. |
| */ |
| public PublicKey getKey() |
| { |
| return key; |
| } |
| |
| protected void encodePayload() throws IOException |
| { |
| if (key instanceof DSSPublicKey) |
| { |
| properties.put("type", "RAW-DSS"); |
| IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dss"); |
| payload = coder.encodePublicKey(key); |
| } |
| else if (key instanceof GnuRSAPublicKey) |
| { |
| properties.put("type", "RAW-RSA"); |
| IKeyPairCodec coder = KeyPairCodecFactory.getInstance("rsa"); |
| payload = coder.encodePublicKey(key); |
| } |
| else if (key instanceof GnuDHPublicKey) |
| { |
| properties.put("type", "RAW-DH"); |
| IKeyPairCodec coder = KeyPairCodecFactory.getInstance("dh"); |
| payload = coder.encodePublicKey(key); |
| } |
| else if (key.getFormat() != null && key.getFormat().equals("X.509")) |
| { |
| properties.put("type", "X.509"); |
| payload = key.getEncoded(); |
| } |
| else |
| throw new IllegalArgumentException("cannot encode public key"); |
| } |
| } |