Examples of ECCurve

Examples of org.bouncycastle.math.ec.ECCurve

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        this.algorithm = algorithm;
        this.d = spec.getD();

        if (spec.getParams() != null) // can be null if implicitlyCA
        {
            ECCurve curve = spec.getParams().getCurve();
            EllipticCurve ellipticCurve;

            ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

            this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
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Examples of org.bouncycastle.math.ec.ECCurve

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        {
            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(),
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Examples of org.bouncycastle.math.ec.ECCurve

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        SecureRandom    k = new FixedSecureRandom(kData);

        BigInteger mod_p = new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564821041"); //p

        ECCurve curve = new ECCurve.Fp(
            mod_p, // p
            new BigInteger("7"), // a
            new BigInteger("43308876546767276905765904595650931995942111794451039583252968842033849580414")); // b

        ECParameterSpec spec = new ECParameterSpec(
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Examples of org.bouncycastle.math.ec.ECCurve

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    public void ecStoreTest(
        String  storeName)
        throws Exception
    {
        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

        KeyPairGenerator    g = KeyPairGenerator.getInstance("ECDSA", "BC");

        g.initialize(ecSpec, new SecureRandom());
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Examples of org.bouncycastle.math.ec.ECCurve

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        byte[] kData = BigIntegers.asUnsignedByteArray(new BigInteger("700000017569056646655505781757157107570501575775705779575555657156756655"));
       
        SecureRandom    k = new FixedSecureRandom(kData);

        ECCurve curve = new ECCurve.Fp(
            new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b

        ECParameterSpec spec = new ECParameterSpec(
            curve,
            curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
            new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
       

        ECPrivateKeySpec priKey = new ECPrivateKeySpec(
            new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
            spec);

        ECPublicKeySpec pubKey = new ECPublicKeySpec(
            curve.decodePoint(Hex.decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
            spec);

        Signature           sgr = Signature.getInstance("SHA1withECNR", "BC");
        KeyFactory          f = KeyFactory.getInstance("ECDSA", "BC");
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Examples of org.bouncycastle.math.ec.ECCurve

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    private void testBCAPI()
        throws Exception
    {
        KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "BC");

        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("BC");

        config.setParameter(ConfigurableProvider.EC_IMPLICITLY_CA, ecSpec);
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Examples of org.bouncycastle.math.ec.ECCurve

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    private void testKeyFactory()
        throws Exception
    {
        KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "BC");

        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("BC");

        config.setParameter(ConfigurableProvider.EC_IMPLICITLY_CA, ecSpec);
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Examples of org.bouncycastle.math.ec.ECCurve

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        this.algorithm = algorithm;
        this.q = spec.getQ();

        if (spec.getParams() != null) // can be null if implictlyCa
        {
            ECCurve curve = spec.getParams().getCurve();
            EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

            this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
        }
        else
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Examples of org.bouncycastle.math.ec.ECCurve

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            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
        {
            X962Parameters params = new X962Parameters((ASN1Primitive)info.getAlgorithmId().getParameters());
            ECCurve                 curve;
            EllipticCurve           ellipticCurve;

            if (params.isNamedCurve())
            {
                ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)params.getParameters();
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Examples of org.bouncycastle.math.ec.ECCurve

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                                   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
        {
            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);
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