/*

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 * 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,

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 *

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 */

/**

 * @test

 * @bug 4893959

 * @summary basic test for HmacPBESHA1

 * @author Valerie Peng

 */

import java.io.PrintStream;

import java.util.*;

import java.security.*;

import java.security.spec.*;

import javax.crypto.*;

import javax.crypto.spec.*;

public class HmacPBESHA1 {

    private static final String MAC_ALGO = "HmacPBESHA1";

    private static final String KEY_ALGO = "PBE";

    private static final String PROVIDER = "SunJCE";

    private SecretKey key = null;

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

        HmacPBESHA1 test = new HmacPBESHA1();

        test.run();

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

    }

    public void run() throws Exception {

        if (key == null) {

            char[] password = { 't', 'e', 's', 't' };

            PBEKeySpec keySpec = new PBEKeySpec(password);

            SecretKeyFactory kf = SecretKeyFactory.getInstance(KEY_ALGO, PROVIDER);

            key = kf.generateSecret(keySpec);

        }

        Mac mac = Mac.getInstance(MAC_ALGO, PROVIDER);

        byte[] plainText = new byte[30];

        mac.init(key);

        mac.update(plainText);

        byte[] value1 = mac.doFinal();

        if (value1.length != 20) {

            throw new Exception("incorrect MAC output length, " +

                                "expected 20, got " + value1.length);

        }

        mac.update(plainText);

        byte[] value2 = mac.doFinal();

        if (!Arrays.equals(value1, value2)) {

            throw new Exception("generated different MAC outputs");

        }

    }

}