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/*
* Copyright (c) 1997, 2024, 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
* @library /test/lib
* @summary DHGenSharedSecret
* @author Jan Luehe
*/
import java.security.*;
import java.security.spec.*;
import java.security.interfaces.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.math.BigInteger;
import jdk.test.lib.security.DiffieHellmanGroup;
import jdk.test.lib.security.SecurityUtils;
public class DHGenSharedSecret {
public static void main(String[] args) throws Exception {
DHGenSharedSecret test = new DHGenSharedSecret();
test.run();
}
public void run() throws Exception {
long start, end;
DiffieHellmanGroup dhGroup = SecurityUtils.getTestDHGroup();
BigInteger p = dhGroup.getPrime();
BigInteger g = new BigInteger(1, dhGroup.getBase().toByteArray());
int l = 512;
DHParameterSpec spec =
new DHParameterSpec(p, g, l);
// generate keyPairs using parameters
KeyPairGenerator keyGen =
KeyPairGenerator.getInstance("DH", "SunJCE");
keyGen.initialize(spec);
// Alice generates her key pairs
KeyPair keyA = keyGen.generateKeyPair();
// Bob generates his key pairs
KeyPair keyB = keyGen.generateKeyPair();
// Alice encodes her public key in x509 format
// , and sends it over to Bob.
byte[] alicePubKeyEnc = keyA.getPublic().getEncoded();
// bob encodes his publicKey in x509 format and
// sends it over to Alice
byte[] bobPubKeyEnc = keyB.getPublic().getEncoded();
// bob uses it to generate Secret
X509EncodedKeySpec x509Spec =
new X509EncodedKeySpec(alicePubKeyEnc);
KeyFactory bobKeyFac = KeyFactory.getInstance("DH", "SunJCE");
PublicKey alicePubKey = bobKeyFac.generatePublic(x509Spec);
KeyAgreement bobAlice = KeyAgreement.getInstance("DH", "SunJCE");
start = System.currentTimeMillis();
bobAlice.init(keyB.getPrivate());
bobAlice.doPhase(alicePubKey, true);
byte[] bobSecret = bobAlice.generateSecret();
end = System.currentTimeMillis();
System.out.println("Time elapsed: " + (end - start));
System.out.println("Test Passed!");
}
}
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