Examples of EllipticCurve

java.security.spec.EllipticCurve
This immutable class holds the necessary values needed to represent an elliptic curve. @see ECField @see ECFieldFp @see ECFieldF2m @author Valerie Peng @version 1.5, 03/28/06 @since 1.5
tools.ec.EllipticCurve

Examples of java.security.spec.EllipticCurve

    private void testECDH(String algorithm)
        throws Exception
    {
        KeyPairGenerator    g = KeyPairGenerator.getInstance(algorithm, "BC");


        EllipticCurve curve = new EllipticCurve(
                new ECFieldFp(new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839")), // q
                new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
                new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b


        ECParameterSpec ecSpec = new ECParameterSpec(

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Examples of java.security.spec.EllipticCurve

        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 java.security.spec.EllipticCurve

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


        if (spec == null)
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());


            this.ecSpec = new ECParameterSpec(
                            ellipticCurve,
                            new ECPoint(
                                    dp.getG().getX().toBigInteger(),

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Examples of java.security.spec.EllipticCurve

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


        if (spec == null)
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());


            this.ecSpec = new ECParameterSpec(
                            ellipticCurve,
                            new ECPoint(
                                    dp.getG().getX().toBigInteger(),
                                    dp.getG().getY().toBigInteger()),
                            dp.getN(),
                            dp.getH().intValue());
        }
        else
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(spec.getCurve(), spec.getSeed());
            
            this.ecSpec = new ECParameterSpec(
                                ellipticCurve,
                                new ECPoint(
                                        spec.getG().getX().toBigInteger(),

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Examples of java.security.spec.EllipticCurve

            X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);


            if (ecP == null) // GOST Curve
            {
                ECDomainParameters gParam = ECGOST3410NamedCurves.getByOID(oid);
                EllipticCurve ellipticCurve = EC5Util.convertCurve(gParam.getCurve(), gParam.getSeed());


                ecSpec = new ECNamedCurveSpec(
                        ECGOST3410NamedCurves.getName(oid),
                        ellipticCurve,
                        new ECPoint(
                                gParam.getG().getX().toBigInteger(),
                                gParam.getG().getY().toBigInteger()),
                        gParam.getN(),
                        gParam.getH());
            }
            else
            {
                EllipticCurve ellipticCurve = EC5Util.convertCurve(ecP.getCurve(), 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;
        }
        else
        {
            X9ECParameters      ecP = X9ECParameters.getInstance(params.getParameters());
            EllipticCurve       ellipticCurve = EC5Util.convertCurve(ecP.getCurve(), ecP.getSeed());


            this.ecSpec = new ECParameterSpec(
                ellipticCurve,
                new ECPoint(
                        ecP.getG().getX().toBigInteger(),

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Examples of java.security.spec.EllipticCurve


    SecureRandom    random = new FixedSecureRandom(new byte[][] { k1, k2 });
    
    private void decodeTest()
    {
        EllipticCurve curve = new EllipticCurve(
                new ECFieldFp(new BigInteger("6277101735386680763835789423207666416083908700390324961279")), // q
                new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
                new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16)); // b


        ECPoint p = ECPointUtil.decodePoint(curve, Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012"));

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Examples of java.security.spec.EllipticCurve


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


        SecureRandom    k = new FixedSecureRandom(kData);


        EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839")), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b


        ECParameterSpec spec = new ECParameterSpec(

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Examples of java.security.spec.EllipticCurve

    
        byte[] kData = BigIntegers.asUnsignedByteArray(new BigInteger("171278725565216523967285789236956265265265235675811949404040041670216363"));


        SecureRandom    k = new FixedSecureRandom(kData);


        EllipticCurve curve = new EllipticCurve(
            new ECFieldF2m(239, // m
                           new int[] { 36 }), // k
            new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), // a
            new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16)); // b

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Examples of java.security.spec.EllipticCurve

        //
        byte[]              data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
        Signature s = Signature.getInstance("ECDSA", "BC");
        KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "BC");


        EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839")), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b


        ECParameterSpec ecSpec = new ECParameterSpec(

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Examples of java.security.spec.EllipticCurve

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


        EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839")), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b


        java.security.spec.ECParameterSpec ecSpec = new java.security.spec.ECParameterSpec(

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