package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.agreement.ECDHBasicAgreement;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.engines.IESEngine;
import org.bouncycastle.crypto.engines.TwofishEngine;
import org.bouncycastle.crypto.generators.KDF2BytesGenerator;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.crypto.params.IESParameters;
import org.bouncycastle.crypto.params.IESWithCipherParameters;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
import java.math.BigInteger;
/**
* test for ECIES - Elliptic Curve Integrated Encryption Scheme
*/
public class ECIESTest
extends SimpleTest
{
ECIESTest()
{
}
public String getName()
{
return "ECIES";
}
public void performTest()
throws Exception
{
ECCurve.Fp curve = new ECCurve.Fp(
new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q
new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16)); // b
ECDomainParameters params = new ECDomainParameters(
curve,
curve.decodePoint(Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
new BigInteger("6277101735386680763835789423176059013767194773182842284081")); // n
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
new BigInteger("651056770906015076056810763456358567190100156695615665659"), // d
params);
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
curve.decodePoint(Hex.decode("0262b12d60690cdcf330babab6e69763b471f994dd702d16a5")), // Q
params);
AsymmetricCipherKeyPair p1 = new AsymmetricCipherKeyPair(pubKey, priKey);
AsymmetricCipherKeyPair p2 = new AsymmetricCipherKeyPair(pubKey, priKey);
//
// stream test
//
IESEngine i1 = new IESEngine(
new ECDHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()));
IESEngine i2 = new IESEngine(
new ECDHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()));
byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
IESParameters p = new IESParameters(d, e, 64);
i1.init(true, p1.getPrivate(), p2.getPublic(), p);
i2.init(false, p2.getPrivate(), p1.getPublic(), p);
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = i1.processBlock(message, 0, message.length);
if (!areEqual(out1, Hex.decode("2442ae1fbf90dd9c06b0dcc3b27e69bd11c9aee4ad4cfc9e50eceb44")))
{
fail("stream cipher test failed on enc");
}
byte[] out2 = i2.processBlock(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("stream cipher test failed");
}
//
// twofish with CBC
//
BufferedBlockCipher c1 = new PaddedBufferedBlockCipher(
new CBCBlockCipher(new TwofishEngine()));
BufferedBlockCipher c2 = new PaddedBufferedBlockCipher(
new CBCBlockCipher(new TwofishEngine()));
i1 = new IESEngine(
new ECDHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()),
c1);
i2 = new IESEngine(
new ECDHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()),
c2);
d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
p = new IESWithCipherParameters(d, e, 64, 128);
i1.init(true, p1.getPrivate(), p2.getPublic(), p);
i2.init(false, p2.getPrivate(), p1.getPublic(), p);
message = Hex.decode("1234567890abcdef");
out1 = i1.processBlock(message, 0, message.length);
if (!areEqual(out1, Hex.decode("2ea288651e21576215f2424bbb3f68816e282e3931b44bd1c429ebdb5f1b290cf1b13309")))
{
fail("twofish cipher test failed on enc");
}
out2 = i2.processBlock(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("twofish cipher test failed");
}
}
public static void main(
String[] args)
{
runTest(new ECIESTest());
}
}
