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package org.spongycastle.jce.provider.test;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;
import java.security.Security;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.spongycastle.asn1.ASN1InputStream;
import org.spongycastle.asn1.DERNull;
import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
import org.spongycastle.jcajce.provider.config.ConfigurableProvider;
import org.spongycastle.jce.interfaces.ECPrivateKey;
import org.spongycastle.jce.interfaces.ECPublicKey;
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 ImplicitlyCaTest
extends SimpleTest
{
byte[] k1 = Hex.decode("d5014e4b60ef2ba8b6211b4062ba3224e0427dd3");
byte[] k2 = Hex.decode("345e8d05c075c3a508df729a1685690e68fcfb8c8117847e89063bca1f85d968fd281540b6e13bd1af989a1fbf17e06462bf511f9d0b140fb48ac1b1baa5bded");
SecureRandom random = new FixedSecureRandom(new byte[][] { k1, k2 });
public void performTest()
throws Exception
{
KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "SC");
ECCurve curve = new ECCurve.Fp(
new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b
ECParameterSpec ecSpec = new ECParameterSpec(
curve,
curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
ConfigurableProvider config = (ConfigurableProvider)Security.getProvider("SC");
config.setParameter(ConfigurableProvider.EC_IMPLICITLY_CA, ecSpec);
g.initialize(null, new SecureRandom());
KeyPair p = g.generateKeyPair();
ECPrivateKey sKey = (ECPrivateKey)p.getPrivate();
ECPublicKey vKey = (ECPublicKey)p.getPublic();
testECDSA(sKey, vKey);
testBCParamsAndQ(sKey, vKey);
testEncoding(sKey, vKey);
testKeyFactory();
}
private void testKeyFactory()
throws Exception
{
KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "SC");
ECCurve curve = new ECCurve.Fp(
new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b
ECParameterSpec ecSpec = new ECParameterSpec(
curve,
curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
ConfigurableProvider config = (ConfigurableProvider)Security.getProvider("SC");
config.setParameter(ConfigurableProvider.EC_IMPLICITLY_CA, ecSpec);
g.initialize(null, new SecureRandom());
KeyPair p = g.generateKeyPair();
ECPrivateKey sKey = (ECPrivateKey)p.getPrivate();
ECPublicKey vKey = (ECPublicKey)p.getPublic();
KeyFactory fact = KeyFactory.getInstance("ECDSA", "SC");
vKey = (ECPublicKey)fact.generatePublic(new ECPublicKeySpec(vKey.getQ(), null));
sKey = (ECPrivateKey)fact.generatePrivate(new ECPrivateKeySpec(sKey.getD(), null));
testECDSA(sKey, vKey);
testBCParamsAndQ(sKey, vKey);
testEncoding(sKey, vKey);
ECPublicKey vKey2 = (ECPublicKey)fact.generatePublic(new ECPublicKeySpec(vKey.getQ(), ecSpec));
ECPrivateKey sKey2 = (ECPrivateKey)fact.generatePrivate(new ECPrivateKeySpec(sKey.getD(), ecSpec));
if (!vKey.equals(vKey2) || vKey.hashCode() != vKey2.hashCode())
{
fail("private equals/hashCode failed");
}
if (!sKey.equals(sKey2) || sKey.hashCode() != sKey2.hashCode())
{
fail("private equals/hashCode failed");
}
}
private void testECDSA(
ECPrivateKey sKey,
ECPublicKey vKey)
throws Exception
{
byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
Signature s = Signature.getInstance("ECDSA", "SC");
s.initSign(sKey);
s.update(data);
byte[] sigBytes = s.sign();
s = Signature.getInstance("ECDSA", "SC");
s.initVerify(vKey);
s.update(data);
if (!s.verify(sigBytes))
{
fail("ECDSA verification failed");
}
}
private void testEncoding(
ECPrivateKey privKey,
ECPublicKey pubKey)
throws Exception
{
KeyFactory kFact = KeyFactory.getInstance("ECDSA", "SC");
byte[] bytes = privKey.getEncoded();
PrivateKeyInfo sInfo = PrivateKeyInfo.getInstance(new ASN1InputStream(bytes).readObject());
if (!sInfo.getAlgorithmId().getParameters().equals(DERNull.INSTANCE))
{
fail("private key parameters wrong");
}
ECPrivateKey sKey = (ECPrivateKey)kFact.generatePrivate(new PKCS8EncodedKeySpec(bytes));
if (!sKey.equals(privKey))
{
fail("private equals failed");
}
if (sKey.hashCode() != privKey.hashCode())
{
fail("private hashCode failed");
}
bytes = pubKey.getEncoded();
SubjectPublicKeyInfo vInfo = SubjectPublicKeyInfo.getInstance(new ASN1InputStream(bytes).readObject());
if (!vInfo.getAlgorithmId().getParameters().equals(DERNull.INSTANCE))
{
fail("public key parameters wrong");
}
ECPublicKey vKey = (ECPublicKey)kFact.generatePublic(new X509EncodedKeySpec(bytes));
if (!vKey.equals(pubKey) || vKey.hashCode() != pubKey.hashCode())
{
fail("public equals/hashCode failed");
}
testBCParamsAndQ(sKey, vKey);
testECDSA(sKey, vKey);
}
private void testBCParamsAndQ(
ECPrivateKey sKey,
ECPublicKey vKey)
{
if (sKey.getParameters() != null)
{
fail("parameters exposed in private key");
}
if (vKey.getParameters() != null)
{
fail("parameters exposed in public key");
}
if (vKey.getQ().getCurve() != null)
{
fail("curve exposed in public point");
}
}
public String getName()
{
return "ImplicitlyCA";
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new ImplicitlyCaTest());
}
}
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