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package org.spongycastle.crypto.test;
import java.math.BigInteger;
import java.security.SecureRandom;
import org.spongycastle.crypto.AsymmetricCipherKeyPair;
import org.spongycastle.crypto.BufferedBlockCipher;
import org.spongycastle.crypto.CipherParameters;
import org.spongycastle.crypto.KeyEncoder;
import org.spongycastle.crypto.KeyGenerationParameters;
import org.spongycastle.crypto.agreement.ECDHBasicAgreement;
import org.spongycastle.crypto.digests.SHA1Digest;
import org.spongycastle.crypto.engines.IESEngine;
import org.spongycastle.crypto.engines.TwofishEngine;
import org.spongycastle.crypto.generators.ECKeyPairGenerator;
import org.spongycastle.crypto.generators.EphemeralKeyPairGenerator;
import org.spongycastle.crypto.generators.KDF2BytesGenerator;
import org.spongycastle.crypto.macs.HMac;
import org.spongycastle.crypto.modes.CBCBlockCipher;
import org.spongycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.spongycastle.crypto.params.AsymmetricKeyParameter;
import org.spongycastle.crypto.params.ECDomainParameters;
import org.spongycastle.crypto.params.ECKeyGenerationParameters;
import org.spongycastle.crypto.params.ECPrivateKeyParameters;
import org.spongycastle.crypto.params.ECPublicKeyParameters;
import org.spongycastle.crypto.params.IESParameters;
import org.spongycastle.crypto.params.IESWithCipherParameters;
import org.spongycastle.crypto.params.ParametersWithIV;
import org.spongycastle.crypto.parsers.ECIESPublicKeyParser;
import org.spongycastle.math.ec.ECConstants;
import org.spongycastle.math.ec.ECCurve;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTest;
/**
* test for ECIES - Elliptic Curve Integrated Encryption Scheme
*/
public class ECIESTest
extends SimpleTest
{
private static byte[] TWOFISH_IV = Hex.decode("000102030405060708090a0b0c0d0e0f");
ECIESTest()
{
}
public String getName()
{
return "ECIES";
}
private void doStaticTest(byte[] iv)
throws Exception
{
BigInteger n = new BigInteger("6277101735386680763835789423176059013767194773182842284081");
ECCurve.Fp curve = new ECCurve.Fp(
new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q
new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16), // b
n, ECConstants.ONE);
ECDomainParameters params = new ECDomainParameters(
curve,
curve.decodePoint(Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
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 };
CipherParameters 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("468d89877e8238802403ec4cb6b329faeccfa6f3a730f2cdb3c0a8e8")))
{
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);
if (iv != null)
{
p = new ParametersWithIV(p, iv);
}
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, (iv == null) ?
Hex.decode("b8a06ea5c2b9df28b58a0a90a734cde8c9c02903e5c220021fe4417410d1e53a32a71696")
: Hex.decode("f246b0e26a2711992cac9c590d08e45c5e730b7c0f4218bb064e27b7dd7c8a3bd8bf01c3")))
{
fail("twofish cipher test failed on enc");
}
out2 = i2.processBlock(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("twofish cipher test failed");
}
}
private void doEphemeralTest(byte[] iv)
throws Exception
{
BigInteger n = new BigInteger("6277101735386680763835789423176059013767194773182842284081");
ECCurve.Fp curve = new ECCurve.Fp(
new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q
new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16), // b
n, ECConstants.ONE);
ECDomainParameters params = new ECDomainParameters(
curve,
curve.decodePoint(Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
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);
// Generate the ephemeral key pair
ECKeyPairGenerator gen = new ECKeyPairGenerator();
gen.init(new ECKeyGenerationParameters(params, new SecureRandom()));
EphemeralKeyPairGenerator ephKeyGen = new EphemeralKeyPairGenerator(gen, new KeyEncoder()
{
public byte[] getEncoded(AsymmetricKeyParameter keyParameter)
{
return ((ECPublicKeyParameters)keyParameter).getQ().getEncoded();
}
});
//
// 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 };
CipherParameters p = new IESParameters(d, e, 64);
i1.init(p2.getPublic(), p, ephKeyGen);
i2.init(p2.getPrivate(), p, new ECIESPublicKeyParser(params));
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = i1.processBlock(message, 0, message.length);
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);
if (iv != null)
{
p = new ParametersWithIV(p, iv);
}
i1.init(p2.getPublic(), p, ephKeyGen);
i2.init(p2.getPrivate(), p, new ECIESPublicKeyParser(params));
message = Hex.decode("1234567890abcdef");
out1 = i1.processBlock(message, 0, message.length);
out2 = i2.processBlock(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("twofish cipher test failed");
}
}
private void doTest(AsymmetricCipherKeyPair p1, AsymmetricCipherKeyPair p2)
throws Exception
{
//
// 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);
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);
out2 = i2.processBlock(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("twofish cipher test failed");
}
}
public void performTest()
throws Exception
{
doStaticTest(null);
doStaticTest(TWOFISH_IV);
BigInteger n = new BigInteger("6277101735386680763835789423176059013767194773182842284081");
ECCurve.Fp curve = new ECCurve.Fp(
new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q
new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16), // b
n, ECConstants.ONE);
ECDomainParameters params = new ECDomainParameters(
curve,
curve.decodePoint(Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
n);
ECKeyPairGenerator eGen = new ECKeyPairGenerator();
KeyGenerationParameters gParam = new ECKeyGenerationParameters(params, new SecureRandom());
eGen.init(gParam);
AsymmetricCipherKeyPair p1 = eGen.generateKeyPair();
AsymmetricCipherKeyPair p2 = eGen.generateKeyPair();
doTest(p1, p2);
doEphemeralTest(null);
doEphemeralTest(TWOFISH_IV);
}
public static void main(
String[] args)
{
runTest(new ECIESTest());
}
}
|
