| /* |
| * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 0000000 |
| * @summary KeyWrapping |
| * @author Jan Luehe |
| */ |
| import javax.crypto.*; |
| import java.security.*; |
| |
| public class KeyWrapping { |
| |
| public static void main(String[] args) throws Exception { |
| Cipher c1 = Cipher.getInstance("DES", "SunJCE"); |
| Cipher c2 = Cipher.getInstance("DES"); |
| |
| KeyGenerator keyGen = KeyGenerator.getInstance("DES"); |
| keyGen.init(56); |
| |
| // Generate two DES keys: sKey and sessionKey |
| SecretKey sKey = keyGen.generateKey(); |
| SecretKey sessionKey = keyGen.generateKey(); |
| |
| // wrap and unwrap the session key |
| // make sure the unwrapped session key |
| // can decrypt a message encrypted |
| // with the session key |
| c1.init(Cipher.WRAP_MODE, sKey); |
| |
| byte[] wrappedKey = c1.wrap(sessionKey); |
| |
| c1.init(Cipher.UNWRAP_MODE, sKey); |
| |
| SecretKey unwrappedSessionKey = |
| (SecretKey)c1.unwrap(wrappedKey, "DES", |
| Cipher.SECRET_KEY); |
| |
| c2.init(Cipher.ENCRYPT_MODE, unwrappedSessionKey); |
| |
| String msg = "Hello"; |
| |
| byte[] cipherText = c2.doFinal(msg.getBytes()); |
| |
| c2.init(Cipher.DECRYPT_MODE, unwrappedSessionKey); |
| |
| byte[] clearText = c2.doFinal(cipherText); |
| |
| if (!msg.equals(new String(clearText))) |
| throw new Exception("The unwrapped session key is corrupted."); |
| |
| KeyPairGenerator kpairGen = KeyPairGenerator.getInstance("DSA"); |
| kpairGen.initialize(1024); |
| |
| KeyPair kpair = kpairGen.genKeyPair(); |
| |
| PublicKey pub = kpair.getPublic(); |
| PrivateKey pri = kpair.getPrivate(); |
| |
| c1.init(Cipher.WRAP_MODE, sKey); |
| |
| byte[] wrappedPub = c1.wrap(pub); |
| byte[] wrappedPri = c1.wrap(pri); |
| |
| c1.init(Cipher.UNWRAP_MODE, sKey); |
| |
| Key unwrappedPub = c1.unwrap(wrappedPub, "DSA", |
| Cipher.PUBLIC_KEY); |
| Key unwrappedPri = c1.unwrap(wrappedPri, "DSA", |
| Cipher.PRIVATE_KEY); |
| } |
| } |