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package org.spongycastle.crypto.test;
import org.spongycastle.crypto.macs.SipHash;
import org.spongycastle.crypto.params.KeyParameter;
import org.spongycastle.crypto.util.Pack;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTest;
/*
* SipHash test values from "SipHash: a fast short-input PRF", by Jean-Philippe
* Aumasson and Daniel J. Bernstein (https://131002.net/siphash/siphash.pdf), Appendix A.
*/
public class SipHashTest
extends SimpleTest
{
public String getName()
{
return "SipHash";
}
public void performTest()
throws Exception
{
byte[] key = Hex.decode("000102030405060708090a0b0c0d0e0f");
byte[] input = Hex.decode("000102030405060708090a0b0c0d0e");
long expected = 0xa129ca6149be45e5L;
SipHash mac = new SipHash();
mac.init(new KeyParameter(key));
mac.update(input, 0, input.length);
long result = mac.doFinal();
if (expected != result)
{
fail("Result does not match expected value for doFinal()");
}
byte[] expectedBytes = new byte[8];
Pack.longToLittleEndian(expected, expectedBytes, 0);
mac.update(input, 0, input.length);
byte[] output = new byte[mac.getMacSize()];
int len = mac.doFinal(output, 0);
if (len != output.length)
{
fail("Result length does not equal getMacSize() for doFinal(byte[],int)");
}
if (!areEqual(expectedBytes, output))
{
fail("Result does not match expected value for doFinal(byte[],int)");
}
}
public static void main(String[] args)
{
runTest(new SipHashTest());
}
}
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