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package org.bouncycastle.crypto.test;

import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.digests.WhirlpoolDigest;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;

/**
 * ISO vector test for Whirlpool
 *  
 */
public class WhirlpoolDigestTest 
    extends DigestTest
{
    private static String[] messages =
    {
         "",
         "a",
         "abc",
         "message digest",
         "abcdefghijklmnopqrstuvwxyz",
        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
        "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
        "abcdbcdecdefdefgefghfghighijhijk"
    };

    private static String[] digests =
    {
        "19FA61D75522A4669B44E39C1D2E1726C530232130D407F89AFEE0964997F7A73E83BE698B288FEBCF88E3E03C4F0757EA8964E59B63D93708B138CC42A66EB3",
        "8ACA2602792AEC6F11A67206531FB7D7F0DFF59413145E6973C45001D0087B42D11BC645413AEFF63A42391A39145A591A92200D560195E53B478584FDAE231A",
        "4E2448A4C6F486BB16B6562C73B4020BF3043E3A731BCE721AE1B303D97E6D4C7181EEBDB6C57E277D0E34957114CBD6C797FC9D95D8B582D225292076D4EEF5",
        "378C84A4126E2DC6E56DCC7458377AAC838D00032230F53CE1F5700C0FFB4D3B8421557659EF55C106B4B52AC5A4AAA692ED920052838F3362E86DBD37A8903E",
        "F1D754662636FFE92C82EBB9212A484A8D38631EAD4238F5442EE13B8054E41B08BF2A9251C30B6A0B8AAE86177AB4A6F68F673E7207865D5D9819A3DBA4EB3B",
        "DC37E008CF9EE69BF11F00ED9ABA26901DD7C28CDEC066CC6AF42E40F82F3A1E08EBA26629129D8FB7CB57211B9281A65517CC879D7B962142C65F5A7AF01467",
        "466EF18BABB0154D25B9D38A6414F5C08784372BCCB204D6549C4AFADB6014294D5BD8DF2A6C44E538CD047B2681A51A2C60481E88C5A20B2C2A80CF3A9A083B",
        "2A987EA40F917061F5D6F0A0E4644F488A7A5A52DEEE656207C562F988E95C6916BDC8031BC5BE1B7B947639FE050B56939BAAA0ADFF9AE6745B7B181C3BE3FD"
    };

    WhirlpoolDigestTest()
    {
        super(new WhirlpoolDigest(), messages, digests);
    }

    protected Digest cloneDigest(Digest digest)
    {
        return new WhirlpoolDigest((WhirlpoolDigest)digest);
    }

    private static String _millionAResultVector = "0C99005BEB57EFF50A7CF005560DDF5D29057FD86B20BFD62DECA0F1CCEA4AF51FC15490EDDC47AF32BB2B66C34FF9AD8C6008AD677F77126953B226E4ED8B01";
    
    private static String _thirtyOneZeros = "3E3F188F8FEBBEB17A933FEAF7FE53A4858D80C915AD6A1418F0318E68D49B4E459223CD414E0FBC8A57578FD755D86E827ABEF4070FC1503E25D99E382F72BA";

    public String getName()
    {
        return "Whirlpool";
    }

    public void performTest()
    {
        super.performTest();

        byte[] thirtyOneZeros = new byte[31];
        performStandardVectorTest("31 zeroes test", 
                    thirtyOneZeros, _thirtyOneZeros);

        byte[] millionAInByteArray = new byte[1000000];
        Arrays.fill(millionAInByteArray, (byte)'a');

        performStandardVectorTest("Million 'a' test", 
                    millionAInByteArray, _millionAResultVector);
    }

    private void performStandardVectorTest(String testTitle, byte[] inputBytes,
            String resultsAsHex)
    {
        doPerformTest(testTitle, inputBytes, resultsAsHex);        
    }

    private void doPerformTest(String testTitle, byte[] inputBytes, String resultsAsHex)
    {
        String resStr = createHexOutputFromDigest(inputBytes);
        if (!resultsAsHex.equals(resStr.toUpperCase()))
        {
            fail(testTitle, resultsAsHex, resStr);
        }
    }

    private String createHexOutputFromDigest(byte[] digestBytes)
    {
        String resStr;
        Digest digest = new WhirlpoolDigest();
        byte[] resBuf = new byte[digest.getDigestSize()];
        digest.update(digestBytes, 0, digestBytes.length);
        digest.doFinal(resBuf, 0);
        resStr = new String(Hex.encode(resBuf));
        return resStr;
    }

    public static void main(String[] args)
    {
        runTest(new WhirlpoolDigestTest());
    }
}