package org.bouncycastle.jce.provider;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.bouncycastle.asn1.cryptopro.ECGOST3410NamedCurves;
import org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x9.X962Parameters;
import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.asn1.x9.X9ECPoint;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.jce.ECGOST3410NamedCurveTable;
import org.bouncycastle.jce.interfaces.ECPointEncoder;
import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec;
import org.bouncycastle.jce.spec.ECNamedCurveSpec;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECFieldElement;
import java.io.IOException;
import java.math.BigInteger;
import java.security.interfaces.ECPublicKey;
import java.security.spec.ECField;
import java.security.spec.ECFieldF2m;
import java.security.spec.ECFieldFp;
import java.security.spec.ECParameterSpec;
import java.security.spec.ECPoint;
import java.security.spec.ECPublicKeySpec;
import java.security.spec.EllipticCurve;
public class JCEECPublicKey
implements ECPublicKey, org.bouncycastle.jce.interfaces.ECPublicKey, ECPointEncoder
{
private String algorithm = "EC";
private org.bouncycastle.math.ec.ECPoint q;
private ECParameterSpec ecSpec;
private boolean withCompression;
private GOST3410PublicKeyAlgParameters gostParams;
JCEECPublicKey(
String algorithm,
ECPublicKeySpec spec)
{
this.algorithm = algorithm;
this.ecSpec = spec.getParams();
ECField field = ecSpec.getCurve().getField();
if (field instanceof ECFieldFp)
{
this.q = new org.bouncycastle.math.ec.ECPoint.Fp(new ECCurve.Fp(((ECFieldFp)field).getP(), ecSpec.getCurve().getA(), ecSpec.getCurve().getB()), new ECFieldElement.Fp(((ECFieldFp)field).getP(), spec.getW().getAffineX()), new ECFieldElement.Fp(((ECFieldFp)field).getP(), spec.getW().getAffineY()));
}
else
{
ECFieldF2m fieldF2m = (ECFieldF2m)field;
int m = fieldF2m.getM();
int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
this.q = new org.bouncycastle.math.ec.ECPoint.F2m(new ECCurve.F2m(m, ks[0], ks[1], ks[2], ecSpec.getCurve().getA(), ecSpec.getCurve().getB()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], spec.getW().getAffineX()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], spec.getW().getAffineY()), false);
}
}
JCEECPublicKey(
String algorithm,
org.bouncycastle.jce.spec.ECPublicKeySpec spec)
{
this.algorithm = algorithm;
this.q = spec.getQ();
ECCurve curve = spec.getParams().getCurve();
EllipticCurve ellipticCurve;
ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());
this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
}
JCEECPublicKey(
String algorithm,
ECPublicKeyParameters params,
ECParameterSpec spec)
{
ECDomainParameters dp = params.getParameters();
this.algorithm = algorithm;
this.q = params.getQ();
if (spec == null)
{
EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());
this.ecSpec = createSpec(ellipticCurve, dp);
}
else
{
this.ecSpec = spec;
}
}
JCEECPublicKey(
String algorithm,
ECPublicKeyParameters params,
org.bouncycastle.jce.spec.ECParameterSpec spec)
{
ECDomainParameters dp = params.getParameters();
this.algorithm = algorithm;
this.q = params.getQ();
if (spec == null)
{
EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());
this.ecSpec = createSpec(ellipticCurve, dp);
}
else
{
EllipticCurve ellipticCurve = EC5Util.convertCurve(spec.getCurve(), spec.getSeed());
this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec);
}
}
/*
* called for implicitCA
*/
JCEECPublicKey(
String algorithm,
ECPublicKeyParameters params)
{
this.algorithm = algorithm;
this.q = params.getQ();
this.ecSpec = null;
}
private ECParameterSpec createSpec(EllipticCurve ellipticCurve, ECDomainParameters dp)
{
return new ECParameterSpec(
ellipticCurve,
new ECPoint(
dp.getG().getX().toBigInteger(),
dp.getG().getY().toBigInteger()),
dp.getN(),
dp.getH().intValue());
}
JCEECPublicKey(
String algorithm,
ECPublicKey key)
{
this.algorithm = key.getAlgorithm();
this.ecSpec = key.getParams();
ECField field = this.ecSpec.getCurve().getField();
if (field instanceof ECFieldFp)
{
this.q = new org.bouncycastle.math.ec.ECPoint.Fp(new ECCurve.Fp(((ECFieldFp)field).getP(), ecSpec.getCurve().getA(), ecSpec.getCurve().getB()), new ECFieldElement.Fp(((ECFieldFp)ecSpec.getCurve().getField()).getP(), key.getW().getAffineX()), new ECFieldElement.Fp(((ECFieldFp)ecSpec.getCurve().getField()).getP(), key.getW().getAffineY()));
}
else
{
ECFieldF2m fieldF2m = (ECFieldF2m)field;
int m = fieldF2m.getM();
int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
this.q = new org.bouncycastle.math.ec.ECPoint.F2m(new ECCurve.F2m(m, ks[0], ks[1], ks[0], ecSpec.getCurve().getA(), ecSpec.getCurve().getB()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[0], key.getW().getAffineX()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[0], key.getW().getAffineY()), false);
}
}
JCEECPublicKey(
SubjectPublicKeyInfo info)
{
if (info.getAlgorithmId().getObjectId().equals(CryptoProObjectIdentifiers.gostR3410_2001))
{
DERBitString bits = info.getPublicKeyData();
ASN1OctetString key;
this.algorithm = "ECGOST3410";
try
{
ASN1InputStream aIn = new ASN1InputStream(bits.getBytes());
key = (ASN1OctetString)aIn.readObject();
}
catch (IOException ex)
{
throw new IllegalArgumentException("error recovering public key");
}
byte[] keyEnc = key.getOctets();
byte[] x = new byte[32];
byte[] y = new byte[32];
for (int i = 0; i != y.length; i++)
{
x[i] = keyEnc[32 - 1 - i];
}
for (int i = 0; i != x.length; i++)
{
y[i] = keyEnc[64 - 1 - i];
}
gostParams = new GOST3410PublicKeyAlgParameters((ASN1Sequence)info.getAlgorithmId().getParameters());
ECNamedCurveParameterSpec spec = ECGOST3410NamedCurveTable.getParameterSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()));
ECCurve curve = spec.getCurve();
EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getSeed());
if (curve instanceof ECCurve.Fp)
{
this.q = new org.bouncycastle.math.ec.ECPoint.Fp(curve, new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), new BigInteger(1, x)), new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), new BigInteger(1, y)));
}
else
{
ECCurve.F2m curveF2m = (ECCurve.F2m) curve;
this.q = new org.bouncycastle.math.ec.ECPoint.F2m(curveF2m, new ECFieldElement.F2m(curveF2m.getM(), curveF2m.getK1(), curveF2m.getK2(), curveF2m.getK3(), new BigInteger(1, x)), new ECFieldElement.F2m(curveF2m.getM(), curveF2m.getK1(), curveF2m.getK2(), curveF2m.getK3(), new BigInteger(1, y)), false);
}
ecSpec = new ECNamedCurveSpec(
ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()),
ellipticCurve,
new ECPoint(
spec.getG().getX().toBigInteger(),
spec.getG().getY().toBigInteger()),
spec.getN(), spec.getH());
}
else
{
X962Parameters params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());
ECCurve curve;
EllipticCurve ellipticCurve;
if (params.isNamedCurve())
{
DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);
curve = ecP.getCurve();
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
ecSpec = new ECNamedCurveSpec(
ECUtil.getCurveName(oid),
ellipticCurve,
new ECPoint(
ecP.getG().getX().toBigInteger(),
ecP.getG().getY().toBigInteger()),
ecP.getN(),
ecP.getH());
}
else if (params.isImplicitlyCA())
{
ecSpec = null;
curve = ProviderUtil.getEcImplicitlyCa().getCurve();
}
else
{
X9ECParameters ecP = new X9ECParameters((ASN1Sequence)params.getParameters());
curve = ecP.getCurve();
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
this.ecSpec = new ECParameterSpec(
ellipticCurve,
new ECPoint(
ecP.getG().getX().toBigInteger(),
ecP.getG().getY().toBigInteger()),
ecP.getN(),
ecP.getH().intValue());
}
DERBitString bits = info.getPublicKeyData();
byte[] data = bits.getBytes();
ASN1OctetString key = new DEROctetString(data);
//
// extra octet string - one of our old certs...
//
if (data[0] == 0x04 && data[1] == data.length - 2
&& (data[2] == 0x02 || data[2] == 0x03))
{
try
{
ASN1InputStream aIn = new ASN1InputStream(data);
key = (ASN1OctetString)aIn.readObject();
}
catch (IOException ex)
{
throw new IllegalArgumentException("error recovering public key");
}
}
X9ECPoint derQ = new X9ECPoint(curve, key);
this.q = derQ.getPoint();
}
}
public String getAlgorithm()
{
return algorithm;
}
public String getFormat()
{
return "X.509";
}
public byte[] getEncoded()
{
ASN1Encodable params;
SubjectPublicKeyInfo info;
if (algorithm.equals("ECGOST3410"))
{
if (gostParams != null)
{
params = gostParams;
}
else
{
params = new GOST3410PublicKeyAlgParameters(
ECGOST3410NamedCurves.getOID(((ECNamedCurveSpec)ecSpec).getName()),
CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet);
}
BigInteger bX = this.q.getX().toBigInteger();
BigInteger bY = this.q.getY().toBigInteger();
byte[] encKey = new byte[64];
byte[] val = bX.toByteArray();
for (int i = 0; i != 32; i++)
{
encKey[i] = val[val.length - 1 - i];
}
val = bY.toByteArray();
for (int i = 0; i != 32; i++)
{
encKey[32 + i] = val[val.length - 1 - i];
}
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()), new DEROctetString(encKey));
}
else
{
if (ecSpec instanceof ECNamedCurveSpec)
{
DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec)ecSpec).getName());
params = new X962Parameters(curveOid);
}
else if (ecSpec == null)
{
params = new X962Parameters(DERNull.INSTANCE);
}
else
{
ECField field = ecSpec.getCurve().getField();
X9ECParameters ecP;
org.bouncycastle.math.ec.ECPoint ecPoint;
ECCurve curve;
if (field instanceof ECFieldFp)
{
curve = new ECCurve.Fp(((ECFieldFp)field).getP(), ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
ecPoint = new org.bouncycastle.math.ec.ECPoint.Fp(curve, curve.fromBigInteger(ecSpec.getGenerator().getAffineX()), curve.fromBigInteger(ecSpec.getGenerator().getAffineY()), withCompression);
}
else
{
ECFieldF2m fieldF2m = (ECFieldF2m)field;
int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
curve = new ECCurve.F2m(fieldF2m.getM(), ks[0], ks[1], ks[2], ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
ecPoint = new org.bouncycastle.math.ec.ECPoint.F2m(curve, curve.fromBigInteger(ecSpec.getGenerator().getAffineX()), curve.fromBigInteger(ecSpec.getGenerator().getAffineY()), withCompression);
}
ecP = new X9ECParameters(
curve,
ecPoint,
ecSpec.getOrder(),
BigInteger.valueOf(ecSpec.getCofactor()),
ecSpec.getCurve().getSeed());
params = new X962Parameters(ecP);
}
ECCurve curve = this.engineGetQ().getCurve();
if (curve instanceof ECCurve.Fp)
{
ASN1OctetString p = (ASN1OctetString)(new X9ECPoint(new org.bouncycastle.math.ec.ECPoint.Fp(curve, this.getQ().getX(), this.getQ().getY(), withCompression)).getDERObject());
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), p.getOctets());
}
else
{
ASN1OctetString p = (ASN1OctetString)(new X9ECPoint(new org.bouncycastle.math.ec.ECPoint.F2m(curve, this.getQ().getX(), this.getQ().getY(), withCompression)).getDERObject());
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), p.getOctets());
}
}
return info.getDEREncoded();
}
public ECParameterSpec getParams()
{
return ecSpec;
}
public org.bouncycastle.jce.spec.ECParameterSpec getParameters()
{
if (ecSpec == null) // implictlyCA
{
return null;
}
return EC5Util.convertSpec(ecSpec, withCompression);
}
public ECPoint getW()
{
return new ECPoint(q.getX().toBigInteger(), q.getY().toBigInteger());
}
public org.bouncycastle.math.ec.ECPoint getQ()
{
if (ecSpec == null)
{
if (q instanceof org.bouncycastle.math.ec.ECPoint.Fp)
{
return new org.bouncycastle.math.ec.ECPoint.Fp(null, q.getX(), q.getY());
}
else
{
return new org.bouncycastle.math.ec.ECPoint.F2m(null, q.getX(), q.getY());
}
}
return q;
}
org.bouncycastle.math.ec.ECPoint engineGetQ()
{
return q;
}
public String toString()
{
StringBuffer buf = new StringBuffer();
String nl = System.getProperty("line.separator");
buf.append("EC Public Key").append(nl);
buf.append(" X: ").append(this.q.getX().toBigInteger().toString(16)).append(nl);
buf.append(" Y: ").append(this.q.getY().toBigInteger().toString(16)).append(nl);
return buf.toString();
}
public void setPointFormat(String style)
{
withCompression = !("UNCOMPRESSED".equalsIgnoreCase(style));
}
}