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package org.spongycastle.pqc.crypto.test;
import java.math.BigInteger;
import java.security.SecureRandom;
import org.spongycastle.crypto.AsymmetricCipherKeyPair;
import org.spongycastle.crypto.Digest;
import org.spongycastle.crypto.Signer;
import org.spongycastle.crypto.digests.SHA224Digest;
import org.spongycastle.crypto.params.ParametersWithRandom;
import org.spongycastle.pqc.crypto.DigestingMessageSigner;
import org.spongycastle.pqc.crypto.gmss.GMSSDigestProvider;
import org.spongycastle.pqc.crypto.gmss.GMSSKeyGenerationParameters;
import org.spongycastle.pqc.crypto.gmss.GMSSKeyPairGenerator;
import org.spongycastle.pqc.crypto.gmss.GMSSParameters;
import org.spongycastle.pqc.crypto.gmss.GMSSPrivateKeyParameters;
import org.spongycastle.pqc.crypto.gmss.GMSSSigner;
import org.spongycastle.util.BigIntegers;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.FixedSecureRandom;
import org.spongycastle.util.test.SimpleTest;
public class GMSSSignerTest
extends SimpleTest
{
byte[] keyData = Hex.decode("b5014e4b60ef2ba8b6211b4062ba3224e0427dd3");
SecureRandom keyRandom = new FixedSecureRandom(new byte[][]{keyData, keyData});
public String getName()
{
return "GMSS";
}
public void performTest()
throws Exception
{
GMSSParameters params = new GMSSParameters(3,
new int[]{15, 15, 10}, new int[]{5, 5, 4}, new int[]{3, 3, 2});
GMSSDigestProvider digProvider = new GMSSDigestProvider()
{
public Digest get()
{
return new SHA224Digest();
}
};
GMSSKeyPairGenerator gmssKeyGen = new GMSSKeyPairGenerator(digProvider);
GMSSKeyGenerationParameters genParam = new GMSSKeyGenerationParameters(keyRandom, params);
gmssKeyGen.init(genParam);
AsymmetricCipherKeyPair pair = gmssKeyGen.generateKeyPair();
ParametersWithRandom param = new ParametersWithRandom(pair.getPrivate(), keyRandom);
// TODO
Signer gmssSigner = new DigestingMessageSigner(new GMSSSigner(digProvider), new SHA224Digest());
gmssSigner.init(true, param);
byte[] message = BigIntegers.asUnsignedByteArray(new BigInteger("968236873715988614170569073515315707566766479517"));
gmssSigner.update(message, 0, message.length);
byte[] sig = gmssSigner.generateSignature();
gmssSigner.init(false, pair.getPublic());
gmssSigner.update(message, 0, message.length);
if (!gmssSigner.verifySignature(sig))
{
fail("verification fails");
}
if (!((GMSSPrivateKeyParameters)pair.getPrivate()).isUsed())
{
fail("private key not marked as used");
}
}
public static void main(
String[] args)
{
runTest(new GMSSSignerTest());
}
}
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