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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.crypto.test;

import org.bouncycastle.crypto.engines.ThreefishEngine;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.TweakableBlockCipherParameters;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;

public class Threefish256Test
    extends CipherTest
{
    // Test cases from skein_golden_kat_internals.txt in Skein 1.3 NIST CD
    static SimpleTest[] tests =
        {
            new BlockCipherVectorTest(0, new ThreefishEngine(ThreefishEngine.BLOCKSIZE_256),
                new TweakableBlockCipherParameters(
                    new KeyParameter(new byte[32]),
                    new byte[16]),
                "0000000000000000000000000000000000000000000000000000000000000000",
                "84da2a1f8beaee947066ae3e3103f1ad536db1f4a1192495116b9f3ce6133fd8"),
            new BlockCipherVectorTest(1, new ThreefishEngine(ThreefishEngine.BLOCKSIZE_256),
                new TweakableBlockCipherParameters(
                    new KeyParameter(Hex.decode(
                        "101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f")),
                    Hex.decode("000102030405060708090a0b0c0d0e0f")),
                "FFFEFDFCFBFAF9F8F7F6F5F4F3F2F1F0EFEEEDECEBEAE9E8E7E6E5E4E3E2E1E0",
                "e0d091ff0eea8fdfc98192e62ed80ad59d865d08588df476657056b5955e97df")
        };

    Threefish256Test()
    {
        super(tests, new ThreefishEngine(ThreefishEngine.BLOCKSIZE_256), new KeyParameter(new byte[32]));
    }

    public String getName()
    {
        return "Threefish-256";
    }

    public static void main(
        String[] args)
    {
        runTest(new Threefish256Test());
    }
}