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Java example source code file (MacKAT.java)

This example Java source code file (MacKAT.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

aakey_131, along, bkey, blong, cddata_50, crypto, exception, hmacmd5, hmacsha224, hmacsha256, hmacsha384, hmacsha512, mactest, security, string, test, util

The MacKAT.java Java example source code

/*
 * Copyright (c) 2003, 2012, 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 4846410 6313661 4963723
 * @summary Basic known-answer-test for Hmac and SslMac algorithms
 * @author Andreas Sterbenz
 */

import java.io.*;
import java.util.*;

import java.security.*;

import javax.crypto.*;
import javax.crypto.spec.*;

public class MacKAT {

    private final static char[] hexDigits = "0123456789abcdef".toCharArray();

    public static String toString(byte[] b) {
        if (b == null) {
            return "(null)";
        }
        StringBuffer sb = new StringBuffer(b.length * 3);
        for (int i = 0; i < b.length; i++) {
            int k = b[i] & 0xff;
            if (i != 0) {
                sb.append(':');
            }
            sb.append(hexDigits[k >>> 4]);
            sb.append(hexDigits[k & 0xf]);
        }
        return sb.toString();
    }

    public static byte[] parse(String s) {
        try {
            int n = s.length();
            ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3);
            StringReader r = new StringReader(s);
            while (true) {
                int b1 = nextNibble(r);
                if (b1 < 0) {
                    break;
                }
                int b2 = nextNibble(r);
                if (b2 < 0) {
                    throw new RuntimeException("Invalid string " + s);
                }
                int b = (b1 << 4) | b2;
                out.write(b);
            }
            return out.toByteArray();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static byte[] b(String s) {
        return parse(s);
    }

    private static int nextNibble(StringReader r) throws IOException {
        while (true) {
            int ch = r.read();
            if (ch == -1) {
                return -1;
            } else if ((ch >= '0') && (ch <= '9')) {
                return ch - '0';
            } else if ((ch >= 'a') && (ch <= 'f')) {
                return ch - 'a' + 10;
            } else if ((ch >= 'A') && (ch <= 'F')) {
                return ch - 'A' + 10;
            }
        }
    }

    static abstract class Test {
        abstract void run(Provider p) throws Exception;
    }

    static class MacTest extends Test {
        private final String alg;
        private final byte[] input;
        private final byte[] macvalue;
        private final byte[] key;
        MacTest(String alg, byte[] input, byte[] macvalue, byte[] key) {
            this.alg = alg;
            this.input = input;
            this.macvalue = macvalue;
            this.key = key;
        }
        void run(Provider p) throws Exception {
            Mac mac = Mac.getInstance(alg, p);
            SecretKey keySpec = new SecretKeySpec(key, alg);
            mac.init(keySpec);
            mac.update(input);
            byte[] macv = mac.doFinal();
            if (Arrays.equals(macvalue, macv) == false) {
                System.out.println("Mac test for " + alg + " failed:");
                if (input.length < 256) {
                    System.out.println("input:       " + toString(input));
                }
                System.out.println("key:        " + toString(key));
                System.out.println("macvalue:   " + toString(macvalue));
                System.out.println("calculated: " + toString(macv));
                throw new Exception("Mac test for " + alg + " failed");
            }
            System.out.println("passed: " + alg);
        }
        private static String toString(byte[] b) {
            return MacKAT.toString(b);
        }
    }

    private static byte[] s(String s) {
        try {
            return s.getBytes("UTF8");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private static Test t(String alg, String input, String macvalue, String key) {
        return new MacTest(alg, b(input), b(macvalue), b(key));
    }
    private static Test t(String alg, String input, String macvalue, byte[] key) {
        return new MacTest(alg, b(input), b(macvalue), key);
    }
    private static Test t(String alg, byte[] input, String macvalue, String key) {
        return new MacTest(alg, input, b(macvalue), b(key));
    }

    private static Test t(String alg, byte[] input, String macvalue, byte[] key) {
        return new MacTest(alg, input, b(macvalue), key);
    }
    private final static byte[] ALONG, BLONG, BKEY;
    private final static byte[] BKEY_20, DDDATA_50, AAKEY_20, CDDATA_50, AAKEY_131;

    static {
        ALONG = new byte[1024 * 128];
        Arrays.fill(ALONG, (byte)'a');
        BLONG = new byte[1024 * 128];
        Random random = new Random(12345678);
        random.nextBytes(BLONG);
        BKEY = new byte[128];
        random.nextBytes(BKEY);
        BKEY_20 = new byte[20];
        Arrays.fill(BKEY_20, (byte) 0x0b);
        DDDATA_50 = new byte[50];
        Arrays.fill(DDDATA_50, (byte) 0xdd);
        AAKEY_20 = new byte[20];
        Arrays.fill(AAKEY_20, (byte) 0xaa);
        CDDATA_50 = new byte[50];
        Arrays.fill(CDDATA_50, (byte) 0xcd);
        AAKEY_131 = new byte[131];
        Arrays.fill(AAKEY_131, (byte) 0xaa);
    }

    private final static Test[] tests = {
        t("SslMacMD5", ALONG, "f4:ad:01:71:51:f6:89:56:72:a3:32:bf:d9:2a:f2:a5",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("SslMacMD5", BLONG, "34:1c:ad:a0:95:57:32:f8:8e:80:8f:ee:b2:d8:23:e5",
                "76:00:4a:72:98:9b:65:ec:2e:f1:43:c4:65:4a:13:71"),
        t("SslMacSHA1", ALONG, "11:c1:71:2e:61:be:4b:cf:bc:6d:e2:4c:58:ae:27:30:0b:24:a4:87",
                "23:ae:dd:61:87:6c:7a:45:47:2f:2c:8f:ea:64:99:3e:27:5f:97:a5"),
        t("SslMacSHA1", BLONG, "84:af:57:0a:af:ef:16:93:90:50:da:88:f8:ad:1a:c5:66:6c:94:d0",
                "9b:bb:e2:aa:9b:28:1c:95:0e:ea:30:21:98:a5:7e:31:9e:bf:5f:51"),

        t("HmacMD5", ALONG, "76:00:4a:72:98:9b:65:ec:2e:f1:43:c4:65:4a:13:71",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("HmacMD5", BLONG, "6c:22:79:bb:34:9e:da:f4:f5:cf:df:0c:62:3d:59:e0",
                "76:00:4a:72:98:9b:65:ec:2e:f1:43:c4:65:4a:13:71"),
        t("HmacMD5", BLONG, "e6:ad:00:c9:49:6b:98:fe:53:a2:b9:2d:7d:41:a2:03",
                BKEY),
        t("HmacSHA1", ALONG, "9e:b3:6e:35:fa:fb:17:2e:2b:f3:b0:4a:9d:38:83:c4:5f:6d:d9:00",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("HmacSHA1", BLONG, "80:2d:5b:ea:08:df:a4:1f:e5:3e:1c:fa:fc:ad:dd:31:da:15:60:2c",
                "76:00:4a:72:98:9b:65:ec:2e:f1:43:c4:65:4a:13:71"),
        t("HmacSHA1", BLONG, "a2:fa:2a:85:18:0e:94:b2:a5:e2:17:8b:2a:29:7a:95:cd:e8:aa:82",
                BKEY),

        t("HmacSHA256", ALONG, "3f:6d:08:df:0c:90:b0:e9:ed:13:4a:2e:c3:48:1d:3d:3e:61:2e:f1:30:c2:63:c4:58:57:03:c2:cb:87:15:07",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("HmacSHA256", BLONG, "e2:4e:a3:b9:0b:b8:99:e4:71:cf:ca:9f:f8:4e:f0:34:8b:19:9f:33:4b:1a:b7:13:f7:c8:57:92:e3:03:74:78",
                BKEY),
        t("HmacSHA384", ALONG, "d0:f0:d4:54:1c:0a:6d:81:ed:15:20:d7:0c:96:06:61:a0:ff:c9:ff:91:e9:a0:cd:e2:45:64:9d:93:4c:a9:fa:89:ae:c0:90:e6:0b:a1:a0:56:80:57:3b:ed:4b:b0:71",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("HmacSHA384", BLONG, "75:c4:ca:c7:f7:58:9d:d3:23:b1:1b:5c:93:2d:ec:7a:03:dc:8c:eb:8d:fe:79:46:4f:30:e7:99:62:de:44:e2:38:95:0e:79:91:78:2f:a4:05:0a:f0:17:10:38:a1:8e",
                BKEY),
        t("HmacSHA512", ALONG, "41:ea:4c:e5:31:3f:7c:18:0e:5e:95:a9:25:0a:10:58:e6:40:53:88:82:4f:5a:da:6f:29:de:04:7b:8e:d7:ed:7c:4d:b8:2a:48:2d:17:2a:2d:59:bb:81:9c:bf:33:40:04:77:44:fb:45:25:1f:fd:b9:29:f4:a6:69:a3:43:6f",
                "1b:34:61:29:05:0d:73:db:25:d0:dd:64:06:29:f6:8a"),
        t("HmacSHA512", BLONG, "fb:cf:4b:c6:d5:49:5a:5b:0b:d9:2a:32:f5:fa:68:d2:68:a4:0f:ae:53:fc:49:12:e6:1d:53:cf:b2:cb:c5:c5:f2:2d:86:bd:14:61:30:c3:a6:6f:44:1f:77:9b:aa:a1:22:48:a9:dd:d0:45:86:d1:a1:82:53:13:c4:03:06:a3",
                BKEY),
        // Test vectors From RFC4231
        t("HmacSHA224", s("Hi There"), "89:6f:b1:12:8a:bb:df:19:68:32:10:7c:d4:9d:f3:3f:47:b4:b1:16:99:12:ba:4f:53:68:4b:22", BKEY_20),
        t("HmacSHA224", s("what do ya want for nothing?"), "a3:0e:01:09:8b:c6:db:bf:45:69:0f:3a:7e:9e:6d:0f:8b:be:a2:a3:9e:61:48:00:8f:d0:5e:44", s("Jefe")),
        t("HmacSHA224", DDDATA_50, "7f:b3:cb:35:88:c6:c1:f6:ff:a9:69:4d:7d:6a:d2:64:93:65:b0:c1:f6:5d:69:d1:ec:83:33:ea", AAKEY_20),
        t("HmacSHA224", CDDATA_50, "6c:11:50:68:74:01:3c:ac:6a:2a:bc:1b:b3:82:62:7c:ec:6a:90:d8:6e:fc:01:2d:e7:af:ec:5a", "01:02:03:04:05:06:07:08:09:0a:0b:0c:0d:0e:0f:10:11:12:13:14:15:16:17:18:19"),
        t("HmacSHA224", s("Test Using Larger Than Block-Size Key - Hash Key First"), "95:e9:a0:db:96:20:95:ad:ae:be:9b:2d:6f:0d:bc:e2:d4:99:f1:12:f2:d2:b7:27:3f:a6:87:0e", AAKEY_131),
        t("HmacSHA224", s("This is a test using a larger than block-size key and a larger than block-size data. The key needs to be hashed before being used by the HMAC algorithm."), "3a:85:41:66:ac:5d:9f:02:3f:54:d5:17:d0:b3:9d:bd:94:67:70:db:9c:2b:95:c9:f6:f5:65:d1", AAKEY_131),
    };

    static void runTests(Test[] tests) throws Exception {
        long start = System.currentTimeMillis();
        Provider p = Security.getProvider("SunJCE");
        System.out.println("Testing provider " + p.getName() + "...");
        Mac.getInstance("HmacSHA224", p);
        Mac.getInstance("HmacSHA256", p);
        Mac.getInstance("HmacSHA384", p);
        Mac.getInstance("HmacSHA512", p);
        KeyGenerator.getInstance("HmacSHA224", p);
        KeyGenerator.getInstance("HmacSHA256", p);
        KeyGenerator.getInstance("HmacSHA384", p);
        KeyGenerator.getInstance("HmacSHA512", p);
        for (int i = 0; i < tests.length; i++) {
            Test test = tests[i];
            test.run(p);
        }
        System.out.println("All tests passed");
        long stop = System.currentTimeMillis();
        System.out.println("Done (" + (stop - start) + " ms).");
    }

    public static void main(String[] args) throws Exception {
        runTests(tests);
    }

}

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