1 /*

     2  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 4936763

    27  * @summary Verify that DHKeyAgreement can generate secret key

    28  * objects for AES algorithm

    29  * @author Valerie Peng

    30  * @run main/othervm -Djdk.crypto.KeyAgreement.legacyKDF=true DHGenSecretKey

    31  */

    32 import java.security.*;

    33 import java.security.interfaces.*;

    34 import javax.crypto.*;

    35 

    36 public class DHGenSecretKey {

    37 

    38     public static void main(String[] args) throws Exception {

    39         DHGenSecretKey test = new DHGenSecretKey();

    40         test.run();

    41     }

    42 

    43     public void run() throws Exception {

    44         // generate keyPairs using parameters

    45         KeyPairGenerator keyGen =

    46             KeyPairGenerator.getInstance("DH", "SunJCE");

    47 

    48         // Alice generates her key pairs

    49         KeyPair keyA = keyGen.generateKeyPair();

    50 

    51         // Bob generates his key pairs

    52         KeyPair keyB = keyGen.generateKeyPair();

    53 

    54         KeyAgreement bobAlice = KeyAgreement.getInstance("DH", "SunJCE");

    55         bobAlice.init(keyB.getPrivate());

    56         bobAlice.doPhase(keyA.getPublic(), true);

    57         byte[] keyMaterial = bobAlice.generateSecret();

    58 

    59         bobAlice.doPhase(keyA.getPublic(), true);

    60         SecretKey skey = bobAlice.generateSecret("AES");

    61         byte[] keyVal = skey.getEncoded();

    62 

    63         System.out.println("Generated " + keyVal.length*8 +

    64             "-bit AES key");

    65         for (int i = 0; i < keyVal.length; i++) {

    66             if (keyVal[i] != keyMaterial[i]) {

    67                 throw new Exception("Error: key value comparison failed!");

    68             }

    69         }

    70         System.out.println("Test Passed");

    71     }

    72 }