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

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 *

 * 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).

 *

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

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

 *

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/*

 * @test

 * @bug 4921804 6324825

 * @summary Verify that DH works properly

 * @author Andreas Sterbenz

 * @library ..

 * @run main/othervm TestDH

 * @run main/othervm TestDH sm

 */

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.Provider;

import java.util.Arrays;

import javax.crypto.KeyAgreement;

import javax.crypto.SecretKey;

public class TestDH extends PKCS11Test {

    @Override

    public void main(Provider p) throws Exception {

        if (p.getService("KeyAgreement", "DH") == null) {

            System.out.println("DH not supported, skipping");

            return;

        }

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("DH", p);

        kpg.initialize(512);

        KeyPair kp1 = kpg.generateKeyPair();

        KeyPair kp2 = kpg.generateKeyPair();

        KeyAgreement ka1, ka2;

        ka1 = KeyAgreement.getInstance("DH", p);

        ka1.init(kp1.getPrivate());

        ka1.doPhase(kp2.getPublic(), true);

        System.out.println("Derive 1...");

        byte[] secret1 = ka1.generateSecret();

        ka1.init(kp2.getPrivate());

        ka1.doPhase(kp1.getPublic(), true);

        System.out.println("Derive 2...");

        byte[] secret2 = ka1.generateSecret();

        if (Arrays.equals(secret1, secret2) == false) {

            throw new Exception("Secrets (1,2) do not match");

        }

        ka2 = KeyAgreement.getInstance("DH", "SunJCE");

        ka2.init(kp1.getPrivate());

        ka2.doPhase(kp2.getPublic(), true);

        System.out.println("Derive 3...");

        byte[] secret3 = ka2.generateSecret();

        if (Arrays.equals(secret1, secret3) == false) {

            throw new Exception("Secrets (1,3) do not match");

        }

        ka2.init(kp2.getPrivate());

        ka2.doPhase(kp1.getPublic(), true);

        System.out.println("Derive 4...");

        byte[] secret4 = ka2.generateSecret();

        if (Arrays.equals(secret1, secret4) == false) {

            throw new Exception("Secrets (1,4) do not match");

        }

        testAlgorithm(ka2, kp2, ka1, kp1, "DES");

        testAlgorithm(ka2, kp2, ka1, kp1, "DESede");

//      testAlgorithm(ka2, kp2, ka1, kp1, "AES");

//      testAlgorithm(ka2, kp2, ka1, kp1, "RC4");

        testAlgorithm(ka2, kp2, ka1, kp1, "Blowfish");

        testAlgorithm(ka2, kp2, ka1, kp1, "TlsPremasterSecret");

    }

    private static void testAlgorithm(KeyAgreement ka1, KeyPair kp1,

            KeyAgreement ka2, KeyPair kp2, String algorithm) throws Exception {

        SecretKey key1;

        ka1.init(kp1.getPrivate());

        ka1.doPhase(kp2.getPublic(), true);

        System.out.println("Derive " + algorithm + " using SunJCE...");

        key1 = ka1.generateSecret(algorithm);

        ka2.init(kp1.getPrivate());

        ka2.doPhase(kp2.getPublic(), true);

        System.out.println("Derive " + algorithm + " using PKCS#11...");

        SecretKey key2 = ka2.generateSecret(algorithm);

        byte[] b1 = key1.getEncoded();

        byte[] b2 = key2.getEncoded();

        if (Arrays.equals(b1, b2) == false) {

            System.out.println(b1.length + " bytes: " + toString(b1));

            System.out.println(b2.length + " bytes: " + toString(b2));

            throw new Exception(algorithm + " secret mismatch");

        }

    }

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

        main(new TestDH(), args);

    }

}