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

        ECCurve curve, 
        byte[]  seed)
    {
        if (curve instanceof ECCurve.Fp)
        {
            return new EllipticCurve(new ECFieldFp(((ECCurve.Fp)curve).getQ()), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
        }
        else
        {
            ECCurve.F2m curveF2m = (ECCurve.F2m)curve;
            int ks[];
            
            if (curveF2m.isTrinomial())
            {
                ks = new int[] { curveF2m.getK1() };
                
                return new EllipticCurve(new ECFieldF2m(curveF2m.getM(), ks), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
            }
            else
            {
                ks = new int[] { curveF2m.getK3(), curveF2m.getK2(), curveF2m.getK1() };
                
                return new EllipticCurve(new ECFieldF2m(curveF2m.getM(), ks), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
            } 
        }
    }

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Examples of java.security.spec.EllipticCurve

        ECCurve  curve,
        byte[]   seed)
    {
        if (curve instanceof ECCurve.Fp)
        {
            return new EllipticCurve(new ECFieldFp(((ECCurve.Fp)curve).getQ()), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
        }
        else
        {
            ECCurve.F2m curveF2m = (ECCurve.F2m)curve;
            int ks[];
            
            if (curveF2m.isTrinomial())
            {
                ks = new int[] { curveF2m.getK1() };
                
                return new EllipticCurve(new ECFieldF2m(curveF2m.getM(), ks), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
            }
            else
            {
                ks = new int[] { curveF2m.getK3(), curveF2m.getK2(), curveF2m.getK1() };


                return new EllipticCurve(new ECFieldF2m(curveF2m.getM(), ks), curve.getA().toBigInteger(), curve.getB().toBigInteger(), seed);
            } 
        }


    }

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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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Examples of java.security.spec.EllipticCurve

    private void testBasicThreadLocal()
        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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Examples of java.security.spec.EllipticCurve

        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 java.security.spec.EllipticCurve

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


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


            this.ecSpec = createSpec(ellipticCurve, dp);
        }
        else
        {

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Examples of java.security.spec.EllipticCurve

        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);
        }
    }

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Examples of java.security.spec.EllipticCurve

            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((DERObject)info.getAlgorithmId().getParameters());
            ECCurve                 curve;
            EllipticCurve           ellipticCurve;
            
            if (params.isNamedCurve())
            {
                DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
                X9ECParameters      ecP = ECUtil.getNamedCurveByOid(oid);

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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 implictlyCa
        {
            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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