Examples of ECCurve

Examples of org.bouncycastle.math.ec.ECCurve

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    public static void writeExplicitECParameters(short[] ecPointFormats, ECDomainParameters ecParameters,
                                                 OutputStream output)
        throws IOException
    {

        ECCurve curve = ecParameters.getCurve();
        if (curve instanceof ECCurve.Fp)
        {

            TlsUtils.writeUint8(ECCurveType.explicit_prime, output);

            ECCurve.Fp fp = (ECCurve.Fp)curve;
            writeECParameter(fp.getQ(), output);

        }
        else if (curve instanceof ECCurve.F2m)
        {

            TlsUtils.writeUint8(ECCurveType.explicit_char2, output);

            ECCurve.F2m f2m = (ECCurve.F2m)curve;
            TlsUtils.writeUint16(f2m.getM(), output);

            if (f2m.isTrinomial())
            {
                TlsUtils.writeUint8(ECBasisType.ec_basis_trinomial, output);
                writeECExponent(f2m.getK1(), output);
            }
            else
            {
                TlsUtils.writeUint8(ECBasisType.ec_basis_pentanomial, output);
                writeECExponent(f2m.getK1(), output);
                writeECExponent(f2m.getK2(), output);
                writeECExponent(f2m.getK3(), output);
            }

        }
        else
        {
            throw new IllegalArgumentException("'ecParameters' not a known curve type");
        }

        writeECFieldElement(curve.getFieldSize(), curve.getA().toBigInteger(), output);
        writeECFieldElement(curve.getFieldSize(), curve.getB().toBigInteger(), output);
        TlsUtils.writeOpaque8(serializeECPoint(ecPointFormats, ecParameters.getG()), output);
        writeECParameter(ecParameters.getN(), output);
        writeECParameter(ecParameters.getH(), output);
    }
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Examples of org.bouncycastle.math.ec.ECCurve

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    /**
     * we generate a self signed certificate for the sake of testing - ECDSA
     */
    public void checkCreation3()
    {
        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 privKeySpec = new ECPrivateKeySpec(
            new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
            spec);

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

        //
        // set up the keys
        //
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Examples of org.bouncycastle.math.ec.ECCurve

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            , 0x28, 0x5A, 0x64, 0x4F, 0x74, 0x0A, 0x26, 0x14};
   
    private void testPointCompression()
        throws Exception
    {
        ECCurve curve = new ECCurve.F2m(m, k1, k2, k3, a, b);
        curve.decodePoint(enc);
       
        int ks[] = new int[3];
        ks[0] = k3;
        ks[1] = k2;
        ks[2] = k1;
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Examples of org.bouncycastle.math.ec.ECCurve

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        }

        // elliptic curve openSSL
        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

        g.initialize(ecSpec, new SecureRandom());

        KeyPair kp = g.generateKeyPair();
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Examples of org.bouncycastle.math.ec.ECCurve

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    {
        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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            else if (params instanceof java.security.spec.ECParameterSpec)
            {
                java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)params;
                this.ecParams = params;

                ECCurve curve = EC5Util.convertCurve(p.getCurve());
                ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false);

                param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);

                engine.init(param);
                initialised = true;
            }
            else if (params instanceof ECGenParameterSpec || params instanceof ECNamedCurveGenParameterSpec)
            {
                String curveName;

                if (params instanceof ECGenParameterSpec)
                {
                    curveName = ((ECGenParameterSpec)params).getName();
                }
                else
                {
                    curveName = ((ECNamedCurveGenParameterSpec)params).getName();
                }

                X9ECParameters  ecP = X962NamedCurves.getByName(curveName);
                if (ecP == null)
                {
                    ecP = SECNamedCurves.getByName(curveName);
                    if (ecP == null)
                    {
                        ecP = NISTNamedCurves.getByName(curveName);
                    }
                    if (ecP == null)
                    {
                        ecP = TeleTrusTNamedCurves.getByName(curveName);
                    }
                    if (ecP == null)
                    {
                        // See if it's actually an OID string (SunJSSE ServerHandshaker setupEphemeralECDHKeys bug)
                        try
                        {
                            ASN1ObjectIdentifier oid = new ASN1ObjectIdentifier(curveName);
                            ecP = X962NamedCurves.getByOID(oid);
                            if (ecP == null)
                            {
                                ecP = SECNamedCurves.getByOID(oid);
                            }
                            if (ecP == null)
                            {
                                ecP = NISTNamedCurves.getByOID(oid);
                            }
                            if (ecP == null)
                            {
                                ecP = TeleTrusTNamedCurves.getByOID(oid);
                            }
                            if (ecP == null)
                            {
                                throw new InvalidAlgorithmParameterException("unknown curve OID: " + curveName);
                            }
                        }
                        catch (IllegalArgumentException ex)
                        {
                            throw new InvalidAlgorithmParameterException("unknown curve name: " + curveName);
                        }
                    }
                }

                this.ecParams = new ECNamedCurveSpec(
                            curveName,
                            ecP.getCurve(),
                            ecP.getG(),
                            ecP.getN(),
                            ecP.getH(),
                            null); // ecP.getSeed());   Work-around JDK bug -- it won't look up named curves properly if seed is present

                java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)ecParams;

                ECCurve curve = EC5Util.convertCurve(p.getCurve());
                ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false);

                param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);

                engine.init(param);
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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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        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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    }

    private void populateFromPubKeyInfo(SubjectPublicKeyInfo info)
    {
        X962Parameters params = new X962Parameters((ASN1Primitive)info.getAlgorithm().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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        {
            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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