Package org.bouncycastle.asn1.x9

Examples of org.bouncycastle.asn1.x9.ECNamedCurveTable

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        }
        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());
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            EllipticCurve ellipticCurve;

            if (params.isNamedCurve())
            {
                ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)params.getParameters();
                X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);

                curve = ecP.getCurve();
                ellipticCurve = EC5Util.convertCurve(curve, 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;
                curve = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa().getCurve();
            }
            else
            {
                X9ECParameters ecP = X9ECParameters.getInstance(params.getParameters());

                curve = ecP.getCurve();
                ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());

                this.ecSpec = new ECParameterSpec(
                    ellipticCurve,
                    new ECPoint(
                        ecP.getG().getX().toBigInteger(),
                        ecP.getG().getY().toBigInteger()),
                    ecP.getN(),
                    ecP.getH().intValue());
            }

            DERBitString bits = info.getPublicKeyData();
            byte[] data = bits.getBytes();
            ASN1OctetString key = new DEROctetString(data);
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        EllipticCurve           ellipticCurve;

        if (params.isNamedCurve())
        {
            ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)params.getParameters();
            X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);

            curve = ecP.getCurve();
            ellipticCurve = EC5Util.convertCurve(curve, 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;
            curve = configuration.getEcImplicitlyCa().getCurve();
        }
        else
        {
            X9ECParameters          ecP = X9ECParameters.getInstance(params.getParameters());

            curve = ecP.getCurve();
            ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed());

            this.ecSpec = new ECParameterSpec(
                    ellipticCurve,
                    new ECPoint(
                            ecP.getG().getX().toBigInteger(),
                            ecP.getG().getY().toBigInteger()),
                    ecP.getN(),
                    ecP.getH().intValue());
        }

        DERBitString    bits = info.getPublicKeyData();
        byte[]          data = bits.getBytes();
        ASN1OctetString key = new DEROctetString(data);
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                }
                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);
                }
            }

            byte[] encKey = DSTU4145PointEncoder.encodePoint(this.q);

            try
            {
                info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(UAObjectIdentifiers.dstu4145be, 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());
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        }
        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());
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        X962Parameters params = new X962Parameters((ASN1Primitive)info.getPrivateKeyAlgorithm().getParameters());

        if (params.isNamedCurve())
        {
            ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(params.getParameters());
            X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);

            if (ecP == null) // DSTU Curve
            {
                ECDomainParameters gParam = DSTU4145NamedCurves.getByOID(oid);
                EllipticCurve ellipticCurve = EC5Util.convertCurve(gParam.getCurve(), gParam.getSeed());

                ecSpec = new ECNamedCurveSpec(
                    oid.getId(),
                    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(),
                    ecP.getG().getY().toBigInteger()),
                ecP.getN(),
                ecP.getH().intValue());
        }

        ASN1Encodable privKey = info.parsePrivateKey();
        if (privKey instanceof DERInteger)
        {
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                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());
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    }
   
    public static X9ECParameters getNamedCurveByOid(
        DERObjectIdentifier oid)
    {
        X9ECParameters params = X962NamedCurves.getByOID(oid);
       
        if (params == null)
        {
            params = SECNamedCurves.getByOID(oid);
            if (params == null)
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     * @return a parameter spec for the curve, null if it is not available.
     */
    public static ECNamedCurveParameterSpec getParameterSpec(
        String  name)
    {
        X9ECParameters  ecP = X962NamedCurves.getByName(name);
        if (ecP == null)
        {
            try
            {
                ecP = X962NamedCurves.getByOID(new DERObjectIdentifier(name));
            }
            catch (IllegalArgumentException e)
            {
                // ignore - not an oid
            }
        }
       
        if (ecP == null)
        {
            ecP = SECNamedCurves.getByName(name);
            if (ecP == null)
            {
                try
                {
                    ecP = SECNamedCurves.getByOID(new DERObjectIdentifier(name));
                }
                catch (IllegalArgumentException e)
                {
                    // ignore - not an oid
                }
            }
        }

        if (ecP == null)
        {
            ecP = TeleTrusTNamedCurves.getByName(name);
            if (ecP == null)
            {
                try
                {
                    ecP = TeleTrusTNamedCurves.getByOID(new DERObjectIdentifier(name));
                }
                catch (IllegalArgumentException e)
                {
                    // ignore - not an oid
                }
            }
        }

        if (ecP == null)
        {
            ecP = NISTNamedCurves.getByName(name);
        }
       
        if (ecP == null)
        {
            return null;
        }

        return new ECNamedCurveParameterSpec(
                                        name,
                                        ecP.getCurve(),
                                        ecP.getG(),
                                        ecP.getN(),
                                        ecP.getH(),
                                        ecP.getSeed());
    }
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            ECDomainParameters  dParams = null;
           
            if (params.isNamedCurve())
            {
                DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
                X9ECParameters      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);
                        }
                    }
                }

                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(),
                                            ecP.getSeed());
            }

            ECPrivateKeyStructure   ec = new ECPrivateKeyStructure((ASN1Sequence)keyInfo.getPrivateKey());

            return new ECPrivateKeyParameters(ec.getKey(), dParams);
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Related Classes of org.bouncycastle.asn1.x9.ECNamedCurveTable

  • 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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