/*

 * Copyright (c) 2016, 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.

 */

import jdk.testlibrary.Asserts;

import javax.crypto.Mac;

import javax.crypto.spec.SecretKeySpec;

import java.util.Arrays;

/**

 * @test

 * @bug 8051408

 * @library /lib/testlibrary

 * @summary testing HmacSHA512/224 and HmacSHA512/256.

 */

public class HmacSHA512 {

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

        Mac mac;

        // Test vectors obtained from

        // https://groups.google.com/d/msg/sci.crypt/OolWgsgQD-8/IUR2KhCcfEkJ

        mac = Mac.getInstance("HmacSHA512/224");

        mac.init(new SecretKeySpec(xeh("4a656665"), "HmacSHA512/224"));

        mac.update("what do ya want for nothing?".getBytes());

        Asserts.assertTrue(Arrays.equals(mac.doFinal(),

                xeh("4a530b31a79ebcce36916546317c45f247d83241dfb818fd37254bde")));

        mac = Mac.getInstance("HmacSHA512/256");

        mac.init(new SecretKeySpec(xeh("4a656665"), "HmacSHA512/256"));

        mac.update("what do ya want for nothing?".getBytes());

        Asserts.assertTrue(Arrays.equals(mac.doFinal(),

                xeh("6df7b24630d5ccb2ee335407081a87188c221489768fa2020513b2d593359456")));

        mac = Mac.getInstance("HmacSHA512/224");

        mac.init(new SecretKeySpec(xeh("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),

                "HmacSHA512/224"));

        mac.update("Hi There".getBytes());

        Asserts.assertTrue(Arrays.equals(mac.doFinal(),

                xeh("b244ba01307c0e7a8ccaad13b1067a4cf6b961fe0c6a20bda3d92039")));

        mac = Mac.getInstance("HmacSHA512/256");

        mac.init(new SecretKeySpec(xeh("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),

                "HmacSHA512/256"));

        mac.update("Hi There".getBytes());

        Asserts.assertTrue(Arrays.equals(mac.doFinal(),

                xeh("9f9126c3d9c3c330d760425ca8a217e31feae31bfe70196ff81642b868402eab")));

    }

    static byte[] xeh(String in) {

        in = in.replaceAll(" ", "");

        int len = in.length() / 2;

        byte[] out = new byte[len];

        for (int i = 0; i < len; i++) {

            out[i] = (byte)Integer.parseInt(in.substring(i * 2, i * 2 + 2), 16);

        }

        return out;

    }

}