Examples of org.bouncycastle.asn1.x9.X9ECParameters

org.bouncycastle2.asn1.x9.X9ECParameters
ASN.1 def for Elliptic-Curve ECParameters structure. See X9.62, for further details.

  @Override
  public Base64URL sign(final ReadOnlyJWSHeader header, final byte[] signingInput)
    throws JOSEException {


    ECDSAParameters initParams = getECDSAParameters(header.getAlgorithm());
    X9ECParameters x9ECParameters = initParams.getX9ECParameters();
    Digest digest = initParams.getDigest();


    ECDomainParameters ecParameterSpec = new ECDomainParameters(
      x9ECParameters.getCurve(), 
      x9ECParameters.getG(), 
      x9ECParameters.getN(), 
      x9ECParameters.getH(), 
      x9ECParameters.getSeed());


    ECPrivateKeyParameters ecPrivateKeyParameters = 
      new ECPrivateKeyParameters(privateKey, ecParameterSpec);


    digest.update(signingInput, 0, signingInput.length);

View Full Code Here


    } else {
      throw new JOSEException("Unsupported ECDSA algorithm, must be ES256, ES384 or ES512");
    }


    X9ECParameters x9ECParams = SECNamedCurves.getByOID(oid);


    return new ECDSAParameters(x9ECParams, digest);
  }

View Full Code Here

    if (! critParamChecker.headerPasses(header)) {
      return false;
    }


    ECDSAParameters initParams = getECDSAParameters(header.getAlgorithm());
    X9ECParameters x9ECParameters = initParams.getX9ECParameters();
    Digest digest = initParams.getDigest();


    byte[] signatureBytes = signature.decode();


    // Split signature into R and S parts
    int rsByteArrayLength = ECDSAProvider.getSignatureByteArrayLength(header.getAlgorithm());


    byte[] rBytes = new byte[rsByteArrayLength / 2];
    byte[] sBytes = new byte[rsByteArrayLength / 2];


    try {
      System.arraycopy(signatureBytes, 0, rBytes, 0, rBytes.length);
      System.arraycopy(signatureBytes, rBytes.length, sBytes, 0, sBytes.length);


    } catch (Exception e) {


      throw new JOSEException("Invalid ECDSA signature format: " + e.getMessage(), e);
    }


    BigInteger r = new BigInteger(1, rBytes);
    BigInteger s = new BigInteger(1, sBytes);




    ECCurve curve = x9ECParameters.getCurve();
    ECPoint qB = curve.createPoint(x, y, false);
    ECPoint q = new ECPoint.Fp(curve, qB.getX(), qB.getY());


    ECDomainParameters ecDomainParameters = new ECDomainParameters(
      curve, 
      x9ECParameters.getG(), 
      x9ECParameters.getN(), 
      x9ECParameters.getH(),
      x9ECParameters.getSeed());


    ECPublicKeyParameters ecPublicKeyParameters = new ECPublicKeyParameters(
      q, ecDomainParameters);


    org.bouncycastle.crypto.signers.ECDSASigner verifier =

View Full Code Here

            {
                throw new IllegalArgumentException("error recovering public key");
            }
        }


        X9ECPoint       derQ = new X9ECPoint(ecSpec.getCurve(), key);


        this.q = derQ.getPoint();
    }

View Full Code Here

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


        if (params.isNamedCurve())
        {
            DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
            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 = new X9ECParameters((ASN1Sequence)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());
        }


        if (info.getPrivateKey() instanceof DERInteger)
        {
            DERInteger          derD = (DERInteger)info.getPrivateKey();

View Full Code Here

        }
        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());

View Full Code Here

    }
    
    public static X9ECParameters getNamedCurveByOid(
        DERObjectIdentifier oid)
    {
        X9ECParameters params = X962NamedCurves.getByOID(oid);
        
        if (params == null)
        {
            params = SECNamedCurves.getByOID(oid);
            if (params == null)

View Full Code Here

                                                    ecP.getH(),
                                                    ecP.getSeed());
                }
                else
                {
                    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
                            {
                                DERObjectIdentifier oid = new DERObjectIdentifier(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;

View Full Code Here

            EllipticCurve           ellipticCurve;


            if (params.isNamedCurve())
            {
                DERObjectIdentifier oid = (DERObjectIdentifier)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 = ProviderUtil.getEcImplicitlyCa().getCurve();
            }
            else
            {
                X9ECParameters          ecP = new X9ECParameters((ASN1Sequence)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);

View Full Code Here

                }
                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);
                }
            }


            BigInteger      bX = this.q.getX().toBigInteger();
            BigInteger      bY = this.q.getY().toBigInteger();
            byte[]          encKey = new byte[64];


            extractBytes(encKey, 0, bX);
            extractBytes(encKey, 32, bY);


            info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()), new DEROctetString(encKey));
        }
        else
        {
            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
            {
                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());

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.bouncycastle.asn1.x9.X9ECParameters

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

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.