Java example source code file (HmacPBESHA1.java)

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Java - Java tags/keywords

crypto, exception, hmacpbesha1, key_algo, mac, mac_lengths, pbekeyspec, pbeparameterspec, pbewithhmacsha1, pbewithhmacsha256, pbewithhmacsha384, provider, secretkey, security, string, sunjce, util

The HmacPBESHA1.java Java example source code

/*
 * Copyright (c) 2003, 2013, 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 4893959 8013069
 * @summary basic test for PBE MAC algorithms.
 * @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_ALGOS = {
        "HmacPBESHA1",
        "PBEWithHmacSHA1",
        "PBEWithHmacSHA224",
        "PBEWithHmacSHA256",
        "PBEWithHmacSHA384",
        "PBEWithHmacSHA512"
    };
    private static final int[] MAC_LENGTHS = { 20, 20, 28, 32, 48, 64 };
    private static final String KEY_ALGO = "PBE";
    private static final String PROVIDER = "SunJCE";

    private static SecretKey key = null;

    public static void main(String argv[]) throws Exception {
        for (int i = 0; i < MAC_ALGOS.length; i++) {
            runtest(MAC_ALGOS[i], MAC_LENGTHS[i]);
        }
        System.out.println("\nTest Passed");
    }

    private static void runtest(String algo, int length) throws Exception {
        System.out.println("Testing: " + algo);
        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(algo, PROVIDER);
        byte[] plainText = new byte[30];
        PBEParameterSpec spec =
            new PBEParameterSpec("saltValue".getBytes(), 250);
        mac.init(key, spec);
        mac.update(plainText);
        byte[] value1 = mac.doFinal();
        if (value1.length != length) {
            throw new Exception("incorrect MAC output length, expected " +
                length + ", got " + value1.length);
        }
        mac.update(plainText);
        byte[] value2 = mac.doFinal();
        if (!Arrays.equals(value1, value2)) {
            throw new Exception("generated different MAC outputs");
        }
    }
}