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package org.spongycastle.jce.provider.test;
import java.io.IOException;
import java.math.BigInteger;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Security;
import java.security.Signature;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
import org.spongycastle.asn1.ASN1OctetString;
import org.spongycastle.jce.provider.BouncyCastleProvider;
import org.spongycastle.jce.spec.ECParameterSpec;
import org.spongycastle.jce.spec.ECPrivateKeySpec;
import org.spongycastle.jce.spec.ECPublicKeySpec;
import org.spongycastle.math.ec.ECCurve;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.FixedSecureRandom;
import org.spongycastle.util.test.SimpleTest;
public class DSTU4145Test
extends SimpleTest
{
public String getName()
{
return "DSTU4145";
}
public void performTest()
throws Exception
{
DSTU4145Test();
generationTest();
//parametersTest();
}
public static void main(String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new DSTU4145Test());
}
static final BigInteger r = new BigInteger("00f2702989366e9569d5092b83ac17f918bf040c487a", 16);
static final BigInteger s = new BigInteger("01dd460039db3be70392d7012f2a492d3e59091ab7a6", 16);
private void generationTest() throws Exception
{
ECCurve.F2m curve = new ECCurve.F2m(173, 1, 2, 10, BigInteger.ZERO, new BigInteger("108576C80499DB2FC16EDDF6853BBB278F6B6FB437D9", 16));
ECParameterSpec spec = new ECParameterSpec(
curve,
curve.createPoint(new BigInteger("BE6628EC3E67A91A4E470894FBA72B52C515F8AEE9", 16), new BigInteger("D9DEEDF655CF5412313C11CA566CDC71F4DA57DB45C", 16), false),
new BigInteger("800000000000000000000189B4E67606E3825BB2831", 16));
SecureRandom k = new FixedSecureRandom(Hex.decode("00137449348C1249971759D99C252FFE1E14D8B31F00"));
SecureRandom keyRand = new FixedSecureRandom(Hex.decode("0000955CD7E344303D1034E66933DC21C8044D42ADB8"));
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSTU4145", "SC");
keyGen.initialize(spec, keyRand);
KeyPair pair = keyGen.generateKeyPair();
Signature sgr = Signature.getInstance("DSTU4145", "SC");
sgr.initSign(pair.getPrivate(), k);
byte[] message = new byte[]{(byte)'a', (byte)'b', (byte)'c'};
sgr.update(message);
byte[] sigBytes = sgr.sign();
sgr.initVerify(pair.getPublic());
sgr.update(message);
if (!sgr.verify(sigBytes))
{
fail("DSTU4145 verification failed");
}
BigInteger[] sig = decode(sigBytes);
if (!r.equals(sig[0]))
{
fail(
": r component wrong." + System.getProperty("line.separator")
+ " expecting: " + r + System.getProperty("line.separator")
+ " got : " + sig[0].toString(16));
}
if (!s.equals(sig[1]))
{
fail(
": s component wrong." + System.getProperty("line.separator")
+ " expecting: " + s + System.getProperty("line.separator")
+ " got : " + sig[1].toString(16));
}
}
private void DSTU4145Test()
throws Exception
{
SecureRandom k = new FixedSecureRandom(Hex.decode("00137449348C1249971759D99C252FFE1E14D8B31F00"));
ECCurve.F2m curve = new ECCurve.F2m(173, 1, 2, 10, BigInteger.ZERO, new BigInteger("108576C80499DB2FC16EDDF6853BBB278F6B6FB437D9", 16));
ECParameterSpec spec = new ECParameterSpec(
curve,
curve.createPoint(new BigInteger("BE6628EC3E67A91A4E470894FBA72B52C515F8AEE9", 16), new BigInteger("D9DEEDF655CF5412313C11CA566CDC71F4DA57DB45C", 16), false),
new BigInteger("800000000000000000000189B4E67606E3825BB2831", 16));
ECPrivateKeySpec priKey = new ECPrivateKeySpec(
new BigInteger("955CD7E344303D1034E66933DC21C8044D42ADB8", 16), // d
spec);
ECPublicKeySpec pubKey = new ECPublicKeySpec(
curve.createPoint(new BigInteger("22de541d48a75c1c3b8c7c107b2551c5093c6c096e1", 16), new BigInteger("1e5b602efc0269d61e64d97c9193d2788fa05c4b7fd5", 16), false),
spec);
Signature sgr = Signature.getInstance("DSTU4145", "SC");
KeyFactory f = KeyFactory.getInstance("DSTU4145", "SC");
PrivateKey sKey = f.generatePrivate(priKey);
PublicKey vKey = f.generatePublic(pubKey);
sgr.initSign(sKey, k);
byte[] message = new byte[]{(byte)'a', (byte)'b', (byte)'c'};
sgr.update(message);
byte[] sigBytes = sgr.sign();
sgr.initVerify(vKey);
sgr.update(message);
if (!sgr.verify(sigBytes))
{
fail("DSTU4145 verification failed");
}
BigInteger[] sig = decode(sigBytes);
if (!r.equals(sig[0]))
{
fail(
": r component wrong." + System.getProperty("line.separator")
+ " expecting: " + r + System.getProperty("line.separator")
+ " got : " + sig[0].toString(16));
}
if (!s.equals(sig[1]))
{
fail(
": s component wrong." + System.getProperty("line.separator")
+ " expecting: " + s + System.getProperty("line.separator")
+ " got : " + sig[1].toString(16));
}
}
private BigInteger[] decode(
byte[] encoding)
throws IOException
{
ASN1OctetString octetString = (ASN1OctetString)ASN1OctetString.fromByteArray(encoding);
encoding = octetString.getOctets();
byte[] r = new byte[encoding.length / 2];
byte[] s = new byte[encoding.length / 2];
System.arraycopy(encoding, 0, s, 0, encoding.length / 2);
System.arraycopy(encoding, encoding.length / 2, r, 0, encoding.length / 2);
BigInteger[] sig = new BigInteger[2];
sig[0] = new BigInteger(1, r);
sig[1] = new BigInteger(1, s);
return sig;
}
}
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