use of org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters in project LinLong-Java by zhenwei1108.
the class EC5Util method convertToSpec.
public static ECParameterSpec convertToSpec(X962Parameters params, ECCurve curve) {
ECParameterSpec ecSpec;
EllipticCurve ellipticCurve;
if (params.isNamedCurve()) {
ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier) params.getParameters();
X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);
if (ecP == null) {
Map additionalECParameters = WeGooProvider.CONFIGURATION.getAdditionalECParameters();
if (!additionalECParameters.isEmpty()) {
ecP = (X9ECParameters) additionalECParameters.get(oid);
}
}
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
ecSpec = new ECNamedCurveSpec(ECUtil.getCurveName(oid), ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), ecP.getH());
} else if (params.isImplicitlyCA()) {
ecSpec = null;
} else {
ASN1Sequence pSeq = ASN1Sequence.getInstance(params.getParameters());
if (pSeq.size() > 3) {
X9ECParameters ecP = X9ECParameters.getInstance(pSeq);
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
if (ecP.getH() != null) {
ecSpec = new ECParameterSpec(ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), ecP.getH().intValue());
} else {
ecSpec = new ECParameterSpec(ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), // TODO: not strictly correct... need to fix the test data...
1);
}
} else // GOST parameters
{
GOST3410PublicKeyAlgParameters gostParams = GOST3410PublicKeyAlgParameters.getInstance(pSeq);
ECNamedCurveParameterSpec spec = ECGOST3410NamedCurveTable.getParameterSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()));
curve = spec.getCurve();
ellipticCurve = EC5Util.convertCurve(curve, spec.getSeed());
ecSpec = new ECNamedCurveSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()), ellipticCurve, EC5Util.convertPoint(spec.getG()), spec.getN(), spec.getH());
}
}
return ecSpec;
}
use of org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters in project LinLong-Java by zhenwei1108.
the class BCGOST3410PublicKey method getEncoded.
public byte[] getEncoded() {
SubjectPublicKeyInfo info;
byte[] keyEnc = this.getY().toByteArray();
byte[] keyBytes;
if (keyEnc[0] == 0) {
keyBytes = new byte[keyEnc.length - 1];
} else {
keyBytes = new byte[keyEnc.length];
}
for (int i = 0; i != keyBytes.length; i++) {
// must be little endian
keyBytes[i] = keyEnc[keyEnc.length - 1 - i];
}
try {
if (gost3410Spec instanceof GOST3410ParameterSpec) {
if (gost3410Spec.getEncryptionParamSetOID() != null) {
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_94, new GOST3410PublicKeyAlgParameters(new ASN1ObjectIdentifier(gost3410Spec.getPublicKeyParamSetOID()), new ASN1ObjectIdentifier(gost3410Spec.getDigestParamSetOID()), new ASN1ObjectIdentifier(gost3410Spec.getEncryptionParamSetOID()))), new DEROctetString(keyBytes));
} else {
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_94, new GOST3410PublicKeyAlgParameters(new ASN1ObjectIdentifier(gost3410Spec.getPublicKeyParamSetOID()), new ASN1ObjectIdentifier(gost3410Spec.getDigestParamSetOID()))), new DEROctetString(keyBytes));
}
} else {
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_94), new DEROctetString(keyBytes));
}
return KeyUtil.getEncodedSubjectPublicKeyInfo(info);
} catch (IOException e) {
return null;
}
}
use of org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters in project robovm by robovm.
the class JCEECPublicKey method populateFromPubKeyInfo.
private void populateFromPubKeyInfo(SubjectPublicKeyInfo info) {
// BEGIN android-removed
// if (info.getAlgorithmId().getObjectId().equals(CryptoProObjectIdentifiers.gostR3410_2001))
// {
// DERBitString bits = info.getPublicKeyData();
// ASN1OctetString key;
// this.algorithm = "ECGOST3410";
//
// try
// {
// key = (ASN1OctetString) ASN1Primitive.fromByteArray(bits.getBytes());
// }
// 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 != x.length; i++)
// {
// x[i] = keyEnc[32 - 1 - i];
// }
//
// for (int i = 0; i != y.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());
//
// this.q = curve.createPoint(new BigInteger(1, x), 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
// END android-removed
{
X962Parameters params = new X962Parameters((ASN1Primitive) info.getAlgorithmId().getParameters());
ECCurve curve;
EllipticCurve ellipticCurve;
if (params.isNamedCurve()) {
ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier) 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 = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa().getCurve();
} else {
X9ECParameters ecP = X9ECParameters.getInstance(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);
//
if (data[0] == 0x04 && data[1] == data.length - 2 && (data[2] == 0x02 || data[2] == 0x03)) {
int qLength = new X9IntegerConverter().getByteLength(curve);
if (qLength >= data.length - 3) {
try {
key = (ASN1OctetString) ASN1Primitive.fromByteArray(data);
} catch (IOException ex) {
throw new IllegalArgumentException("error recovering public key");
}
}
}
X9ECPoint derQ = new X9ECPoint(curve, key);
this.q = derQ.getPoint();
}
}
use of org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters in project robovm by robovm.
the class JCEECPublicKey method getEncoded.
public byte[] getEncoded() {
ASN1Encodable params;
SubjectPublicKeyInfo info;
// BEGIN android-removed
// if (algorithm.equals("ECGOST3410"))
// {
// if (gostParams != null)
// {
// params = gostParams;
// }
// else
// {
// if (ecSpec instanceof ECNamedCurveSpec)
// {
// params = new GOST3410PublicKeyAlgParameters(
// ECGOST3410NamedCurves.getOID(((ECNamedCurveSpec)ecSpec).getName()),
// CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet);
// }
// else
// { // strictly speaking this may not be applicable...
// ECCurve curve = EC5Util.convertCurve(ecSpec.getCurve());
//
// X9ECParameters ecP = new X9ECParameters(
// curve,
// EC5Util.convertPoint(curve, ecSpec.getGenerator(), withCompression),
// ecSpec.getOrder(),
// BigInteger.valueOf(ecSpec.getCofactor()),
// ecSpec.getCurve().getSeed());
//
// params = new X962Parameters(ecP);
// }
// }
//
// BigInteger bX = this.q.getX().toBigInteger();
// BigInteger bY = this.q.getY().toBigInteger();
// byte[] encKey = new byte[64];
//
// extractBytes(encKey, 0, bX);
// extractBytes(encKey, 32, bY);
//
// try
// {
// info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params), new DEROctetString(encKey));
// }
// catch (IOException e)
// {
// return null;
// }
// }
// else
// END android-removed
{
if (ecSpec instanceof ECNamedCurveSpec) {
ASN1ObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec) ecSpec).getName());
if (curveOid == null) {
curveOid = new ASN1ObjectIdentifier(((ECNamedCurveSpec) ecSpec).getName());
}
params = new X962Parameters(curveOid);
} else if (ecSpec == null) {
params = new X962Parameters(DERNull.INSTANCE);
} else {
ECCurve curve = EC5Util.convertCurve(ecSpec.getCurve());
X9ECParameters ecP = new X9ECParameters(curve, EC5Util.convertPoint(curve, ecSpec.getGenerator(), withCompression), ecSpec.getOrder(), BigInteger.valueOf(ecSpec.getCofactor()), ecSpec.getCurve().getSeed());
params = new X962Parameters(ecP);
}
ECCurve curve = this.engineGetQ().getCurve();
ASN1OctetString p = (ASN1OctetString) new X9ECPoint(curve.createPoint(this.getQ().getX().toBigInteger(), this.getQ().getY().toBigInteger(), withCompression)).toASN1Primitive();
info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params), p.getOctets());
}
return KeyUtil.getEncodedSubjectPublicKeyInfo(info);
}
use of org.bouncycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters in project jmulticard by ctt-gob-es.
the class EC5Util method convertToSpec.
public static ECParameterSpec convertToSpec(X962Parameters params, ECCurve curve) {
ECParameterSpec ecSpec;
EllipticCurve ellipticCurve;
if (params.isNamedCurve()) {
ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier) params.getParameters();
X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);
if (ecP == null) {
Map additionalECParameters = BouncyCastleProvider.CONFIGURATION.getAdditionalECParameters();
if (!additionalECParameters.isEmpty()) {
ecP = (X9ECParameters) additionalECParameters.get(oid);
}
}
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
ecSpec = new ECNamedCurveSpec(ECUtil.getCurveName(oid), ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), ecP.getH());
} else if (params.isImplicitlyCA()) {
ecSpec = null;
} else {
ASN1Sequence pSeq = ASN1Sequence.getInstance(params.getParameters());
if (pSeq.size() > 3) {
X9ECParameters ecP = X9ECParameters.getInstance(pSeq);
ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());
if (ecP.getH() != null) {
ecSpec = new ECParameterSpec(ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), ecP.getH().intValue());
} else {
ecSpec = new ECParameterSpec(ellipticCurve, convertPoint(ecP.getG()), ecP.getN(), // TODO: not strictly correct... need to fix the test data...
1);
}
} else // GOST parameters
{
GOST3410PublicKeyAlgParameters gostParams = GOST3410PublicKeyAlgParameters.getInstance(pSeq);
ECNamedCurveParameterSpec spec = ECGOST3410NamedCurveTable.getParameterSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()));
curve = spec.getCurve();
ellipticCurve = EC5Util.convertCurve(curve, spec.getSeed());
ecSpec = new ECNamedCurveSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()), ellipticCurve, EC5Util.convertPoint(spec.getG()), spec.getN(), spec.getH());
}
}
return ecSpec;
}
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