Package org.bouncycastle.asn1.x9

Examples of org.bouncycastle.asn1.x9.X962Parameters

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        {
            if (ecSpec instanceof ECNamedCurveSpec)
            {
                DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec)ecSpec).getName());
               
                params = new X962Parameters(curveOid);
            }
            else if (ecSpec == null)
            {
                params = new X962Parameters(DERNull.INSTANCE);
            }
            else
            {
                ECField field = ecSpec.getCurve().getField();
                X9ECParameters ecP;
                org.bouncycastle.math.ec.ECPoint ecPoint;
                ECCurve curve;

                if (field instanceof ECFieldFp)
                {                   
                    curve = new ECCurve.Fp(((ECFieldFp)field).getP(), ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
                    ecPoint = new org.bouncycastle.math.ec.ECPoint.Fp(curve, curve.fromBigInteger(ecSpec.getGenerator().getAffineX()), curve.fromBigInteger(ecSpec.getGenerator().getAffineY()), withCompression);
                }
                else
                {
                    ECFieldF2m fieldF2m = (ECFieldF2m)field;
                    int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());

                    curve = new ECCurve.F2m(fieldF2m.getM(), ks[0], ks[1], ks[2], ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
                    ecPoint = new org.bouncycastle.math.ec.ECPoint.F2m(curve, curve.fromBigInteger(ecSpec.getGenerator().getAffineX()), curve.fromBigInteger(ecSpec.getGenerator().getAffineY()), withCompression);
                }

                ecP = new X9ECParameters(
                        curve,
                        ecPoint,
                        ecSpec.getOrder(),
                        BigInteger.valueOf(ecSpec.getCofactor()),
                        ecSpec.getCurve().getSeed());
                params = new X962Parameters(ecP);
            }

            ECCurve curve = this.engineGetQ().getCurve();

            if (curve instanceof ECCurve.Fp)
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    }

    JCEECPrivateKey(
        PrivateKeyInfo      info)
    {
        X962Parameters      params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());

        if (params.isNamedCurve())
        {
            DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
            X9ECParameters      ecP = ECUtil.getNamedCurveByOid(oid);
            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 = new X9ECParameters((ASN1Sequence)params.getParameters());
            EllipticCurve       ellipticCurve = EC5Util.convertCurve(ecP.getCurve(), ecP.getSeed());

            this.ecSpec = new ECParameterSpec(
                ellipticCurve,
                new ECPoint(
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     *
     * @return a PKCS8 representation of the key.
     */
    public byte[] getEncoded()
    {
        X962Parameters          params;

        if (ecSpec instanceof ECNamedCurveSpec)
        {
            DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec)ecSpec).getName());
           
            params = new X962Parameters(curveOid);
        }
        else if (ecSpec == null)
        {
            params = new X962Parameters(DERNull.INSTANCE);
        }
        else
        {
            ECField field = ecSpec.getCurve().getField();
            ECCurve curve;
            org.bouncycastle.math.ec.ECPoint ecPoint;

            if (field instanceof ECFieldFp)
            {
                curve = new ECCurve.Fp(((ECFieldFp)field).getP(), ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
                ecPoint = new org.bouncycastle.math.ec.ECPoint.Fp(curve, new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), ecSpec.getGenerator().getAffineX()), new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), ecSpec.getGenerator().getAffineY()), withCompression);
            }
            else
            {
                ECFieldF2m fieldF2m = (ECFieldF2m)field;
                int m = fieldF2m.getM();
                int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
                curve = new ECCurve.F2m(m, ks[0], ks[1], ks[2], ecSpec.getCurve().getA(), ecSpec.getCurve().getB());
                ecPoint = new org.bouncycastle.math.ec.ECPoint.F2m(curve, new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], ecSpec.getGenerator().getAffineX()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], ecSpec.getGenerator().getAffineY()), withCompression);
            }

            X9ECParameters          ecP = new X9ECParameters(
                                            curve,
                                            ecPoint,
                                            ecSpec.getOrder(),
                                            BigInteger.valueOf(ecSpec.getCofactor()),
                                            ecSpec.getCurve().getSeed());
           
            params = new X962Parameters(ecP);
        }
       
        PrivateKeyInfo          info;
       
        if (algorithm.equals("ECGOST3410"))
        {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()), new ECPrivateKeyStructure(this.getS()).getDERObject());
        }
        else
        {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), new ECPrivateKeyStructure(this.getS()).getDERObject());
        }

        return info.getDEREncoded();
    }
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                throw new UnsupportedOperationException("Subclass of ECPoint " + curve.getClass().toString() + "not supported");
            }
        }
        else
        {
            X962Parameters          params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());
            ECCurve                 curve;

            if (params.isNamedCurve())
            {
                DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
                X9ECParameters      ecP = ECUtil.getNamedCurveByOid(oid);
   
                ecSpec = new ECNamedCurveParameterSpec(
                                            ECUtil.getCurveName(oid),
                                            ecP.getCurve(),
                                            ecP.getG(),
                                            ecP.getN(),
                                            ecP.getH(),
                                            ecP.getSeed());
                curve = ((ECParameterSpec)ecSpec).getCurve();
            }
            else if (params.isImplicitlyCA())
            {
                ecSpec = null;
                curve = ProviderUtil.getEcImplicitlyCa().getCurve();
            }
            else
            {
                X9ECParameters ecP = new X9ECParameters(
                            (ASN1Sequence)params.getParameters());
                ecSpec = new ECParameterSpec(
                                            ecP.getCurve(),
                                            ecP.getG(),
                                            ecP.getN(),
                                            ecP.getH(),
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            info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()), new DEROctetString(encKey));
        }
        else
        {
            X962Parameters          params = null;
            if (ecSpec instanceof ECNamedCurveParameterSpec)
            {
                DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveParameterSpec)ecSpec).getName());

                params = new X962Parameters(curveOid);
            }
            else if (ecSpec == null)
            {
                params = new X962Parameters(DERNull.INSTANCE);
            }
            else
            {
                ECParameterSpec         p = (ECParameterSpec)ecSpec;

                ECCurve curve = p.getG().getCurve();
                ECPoint generator;
                if (curve instanceof ECCurve.Fp)
                {
                    generator = new ECPoint.Fp(p.getG().getCurve(), p.getG().getX(), p.getG().getY(), withCompression);
                }
                else if (curve instanceof ECCurve.F2m)
                {
                    generator = new ECPoint.F2m(p.getG().getCurve(), p.getG().getX(), p.getG().getY(), withCompression);
                }
                else
                {
                    throw new UnsupportedOperationException("Subclass of ECPoint " + curve.getClass().toString() + "not supported");
                }

                X9ECParameters ecP = new X9ECParameters(
                    p.getCurve(), generator, p.getN(), p.getH(), p.getSeed());

                params = new X962Parameters(ecP);
            }

            ECCurve curve = this.engineGetQ().getCurve();
            ASN1OctetString p;
            if (curve instanceof ECCurve.Fp)
            {
                p = (ASN1OctetString)(new X9ECPoint(new ECPoint.Fp(curve, this.getQ().getX(), this.getQ().getY(), withCompression)).getDERObject());
            }
            else if (curve instanceof ECCurve.F2m)
            {
                p = (ASN1OctetString)(new X9ECPoint(new ECPoint.F2m(curve, this.getQ().getX(), this.getQ().getY(), withCompression)).getDERObject());
            }
            else
            {
                throw new UnsupportedOperationException("Subclass of ECPoint " + curve.getClass().toString() + "not supported");
            }
           
            info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), p.getOctets());
        }
       
        return info.getDEREncoded();
    }
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     */
    public byte[] getEncoded()
    {
        ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
        DEROutputStream         dOut = new DEROutputStream(bOut);
        X962Parameters          params = null;

        if (ecSpec instanceof ECNamedCurveParameterSpec)
        {
            DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveParameterSpec)ecSpec).getName());
           
            params = new X962Parameters(curveOid);
        }
        else if (ecSpec == null)
        {
            params = new X962Parameters(DERNull.INSTANCE);
        }
        else
        {
            ECParameterSpec         p = (ECParameterSpec)ecSpec;
            ECCurve curve = p.getG().getCurve();
            ECPoint generator;
           
            if (curve instanceof ECCurve.Fp)
            {
                generator = new ECPoint.Fp(curve, p.getG().getX(), p.getG().getY(), withCompression);
            }
            else if (curve instanceof ECCurve.F2m)
            {
                generator = new ECPoint.F2m(curve, p.getG().getX(), p.getG().getY(), withCompression);
            }
            else
            {
                throw new UnsupportedOperationException("Subclass of ECPoint " + curve.getClass().toString() + "not supported");
            }
           
            X9ECParameters ecP = new X9ECParameters(
                  p.getCurve(),
                  generator,
                  p.getN(),
                  p.getH(),
                  p.getSeed());

            params = new X962Parameters(ecP);
        }

        PrivateKeyInfo          info;
       
        if (algorithm.equals("ECGOST3410"))
        {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()), new ECPrivateKeyStructure(this.getD()).getDERObject());
        }
        else
        {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), new ECPrivateKeyStructure(this.getD()).getDERObject());
        }
       
        try
        {
            dOut.writeObject(info);
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    }

    JCEECPrivateKey(
        PrivateKeyInfo      info)
    {
        X962Parameters      params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());

        if (params.isNamedCurve())
        {
            DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
            X9ECParameters      ecP = ECUtil.getNamedCurveByOid(oid);

            ecSpec = new ECNamedCurveParameterSpec(
                                        ECUtil.getCurveName(oid),
                                        ecP.getCurve(),
                                        ecP.getG(),
                                        ecP.getN(),
                                        ecP.getH(),
                                        ecP.getSeed());
        }
        else if (params.isImplicitlyCA())
        {
            ecSpec = null;
        }
        else
        {
            X9ECParameters          ecP = new X9ECParameters((ASN1Sequence)params.getParameters());
            ecSpec = new ECParameterSpec(ecP.getCurve(),
                                            ecP.getG(),
                                            ecP.getN(),
                                            ecP.getH(),
                                            ecP.getSeed());
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            return new DSAPublicKeyParameters(derY.getValue(), new DSAParameters(params.getP(), params.getQ(), params.getG()));
        }
        else if (algId.getObjectId().equals(X9ObjectIdentifiers.id_ecPublicKey))
        {
            X962Parameters      params = new X962Parameters((DERObject)keyInfo.getAlgorithmId().getParameters());
            ECDomainParameters  dParams = null;
           
            if (params.isNamedCurve())
            {
                DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
                X9ECParameters      ecP = X962NamedCurves.getByOID(oid);

                dParams = new ECDomainParameters(
                                            ecP.getCurve(),
                                            ecP.getG(),
                                            ecP.getN(),
                                            ecP.getH(),
                                            ecP.getSeed());
            }
            else
            {
                X9ECParameters ecP = new X9ECParameters(
                            (ASN1Sequence)params.getParameters());
                dParams = new ECDomainParameters(
                                            ecP.getCurve(),
                                            ecP.getG(),
                                            ecP.getN(),
                                            ecP.getH(),
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        X962Parameters          params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());

        if (params.isNamedCurve())
        {
            DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
            X9ECParameters      ecP = X962NamedCurves.getByOID(oid);

            ecSpec = new ECNamedCurveParameterSpec(
                                        X962NamedCurves.getName(oid),
                                        ecP.getCurve(),
                                        ecP.getG(),
                                        ecP.getN(),
                                        ecP.getH(),
                                        ecP.getSeed());
        }
        else
        {
            X9ECParameters ecP = new X9ECParameters(
                        (ASN1Sequence)params.getParameters());
            ecSpec = new ECParameterSpec(
                                        ecP.getCurve(),
                                        ecP.getG(),
                                        ecP.getN(),
                                        ecP.getH(),
                                        ecP.getSeed());
        }

        DERBitString    bits = info.getPublicKeyData();
        byte[]          data = bits.getBytes();
    ASN1OctetString  key = new DEROctetString(data);
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        {
            params = new X962Parameters(X962NamedCurves.getOID(((ECNamedCurveParameterSpec)ecSpec).getName()));
        }
        else
        {
            X9ECParameters          ecP = new X9ECParameters(
                                            ecSpec.getCurve(),
                                            ecSpec.getG(),
                                            ecSpec.getN(),
                                            ecSpec.getH(),
                                            ecSpec.getSeed());
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Related Classes of org.bouncycastle.asn1.x9.X962Parameters

  • com.nimbusds.jose.crypto.ECDSAProvider
  • com.nimbusds.jose.crypto.ECDSASigner
  • com.nimbusds.jose.crypto.ECDSAVerifier
  • org.bouncycastle.asn1.ASN1Encodable
  • org.bouncycastle.asn1.ASN1EncodableVector
  • org.bouncycastle.asn1.ASN1Integer
  • org.bouncycastle.asn1.ASN1ObjectIdentifier
  • org.bouncycastle.asn1.ASN1SequenceParser
  • org.bouncycastle.asn1.BERSequence
  • org.bouncycastle.asn1.BERTaggedObject
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