| /* GnuSecretKey.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.key; |
| |
| import gnu.java.security.util.Util; |
| import java.security.Key; |
| |
| /** |
| * A secret key composed of a sequence of raw, unformatted octets. This class is |
| * analogous to the {@link javax.crypto.spec.SecretKeySpec} class, but is |
| * provided for platforms that do not or cannot contain that class. |
| */ |
| public class GnuSecretKey |
| implements Key |
| { |
| private final byte[] key; |
| private final String algorithm; |
| |
| /** |
| * Creates a new secret key. The supplied byte array is copied by this |
| * constructor. |
| * |
| * @param key The raw, secret key. |
| * @param algorithm The algorithm name, which can be null or empty. |
| */ |
| public GnuSecretKey(byte[] key, String algorithm) |
| { |
| this(key, 0, key.length, algorithm); |
| } |
| |
| /** |
| * Creates a new secret key from a portion of a byte array. |
| * |
| * @param key The raw, secret key. |
| * @param offset The offset at which the key begins. |
| * @param length The number of bytes that comprise the key. |
| * @param algorithm The algorithm name, which can be null or empty. |
| */ |
| public GnuSecretKey(byte[] key, int offset, int length, String algorithm) |
| { |
| this.key = new byte[length]; |
| System.arraycopy(key, offset, this.key, 0, length); |
| this.algorithm = algorithm; |
| } |
| |
| /** |
| * Returns the algorithm name, if any. |
| * |
| * @return The algorithm name. |
| */ |
| public String getAlgorithm() |
| { |
| return null; |
| } |
| |
| /** |
| * Returns the encoded key, which is merely the byte array this class was |
| * created with. A reference to the internal byte array is returned, so the |
| * caller can delete this key from memory by modifying the returned array. |
| * |
| * @return The raw key. |
| */ |
| public byte[] getEncoded() |
| { |
| return key; |
| } |
| |
| /** |
| * Returns the string "RAW". |
| * |
| * @return The string "RAW". |
| */ |
| public String getFormat() |
| { |
| return "RAW"; |
| } |
| |
| public boolean equals(Object o) |
| { |
| if (! (o instanceof GnuSecretKey)) |
| return false; |
| if (key.length != ((GnuSecretKey) o).key.length) |
| return false; |
| byte[] key2 = ((GnuSecretKey) o).key; |
| for (int i = 0; i < key.length; i++) |
| if (key[i] != key2[i]) |
| return false; |
| return true; |
| } |
| |
| public String toString() |
| { |
| return "GnuSecretKey [ " + algorithm + " " + Util.toString(key) + " ]"; |
| } |
| } |