Package org.bouncycastle.jce.spec

Examples of org.bouncycastle.jce.spec.ECParameterSpec

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        ECPublicKeyParameters pub = (ECPublicKeyParameters)pair.getPublic();
        ECPrivateKeyParameters priv = (ECPrivateKeyParameters)pair.getPrivate();

        if (ecParams instanceof ECParameterSpec)
        {
            ECParameterSpec p = (ECParameterSpec)ecParams;

            BCDSTU4145PublicKey pubKey = new BCDSTU4145PublicKey(algorithm, pub, p);
            return new KeyPair(pubKey,
                new BCDSTU4145PrivateKey(algorithm, priv, pubKey, p));
        }
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        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
       
       
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        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

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            239, // m
            36, // k
            new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), // a
            new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16)); // b
   
        ECParameterSpec params = new ECParameterSpec(
            curve,
            curve.decodePoint(Hex.decode("0457927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D61D8EE5077C33FECF6F1A16B268DE469C3C7744EA9A971649FC7A9616305")), // G
            new BigInteger("220855883097298041197912187592864814557886993776713230936715041207411783"), // n
            BigInteger.valueOf(4)); // h
   
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            239, // m
            36, // k
            new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), // a
            new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16)); // b

        ECParameterSpec params = new ECParameterSpec(
            curve,
            curve.decodePoint(Hex.decode("0457927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D61D8EE5077C33FECF6F1A16B268DE469C3C7744EA9A971649FC7A9616305")), // G
            new BigInteger("220855883097298041197912187592864814557886993776713230936715041207411783"), // n
            BigInteger.valueOf(4)); // h
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        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());

        p = g.generateKeyPair();

        sKey = p.getPrivate();
        vKey = p.getPublic();

        s.initSign(sKey);

        s.update(data);

        sigBytes = s.sign();

        s = Signature.getInstance("ECDSA", "BC");

        s.initVerify(vKey);

        s.update(data);

        if (!s.verify(sigBytes))
        {
            fail("ECDSA verification failed");
        }

        //
        // key decoding test - serialisation test
        //

        PublicKey eck1 = (PublicKey)serializeDeserialize(vKey);

        checkEquals(eck1, vKey);

        PrivateKey eck2 = (PrivateKey)serializeDeserialize(sKey);

        checkEquals(eck2, sKey);

        // Named curve parameter
        g.initialize(new ECNamedCurveGenParameterSpec("P-256"), new SecureRandom());

        p = g.generateKeyPair();

        sKey = p.getPrivate();
        vKey = p.getPublic();

        s.initSign(sKey);

        s.update(data);

        sigBytes = s.sign();

        s = Signature.getInstance("ECDSA", "BC");

        s.initVerify(vKey);

        s.update(data);

        if (!s.verify(sigBytes))
        {
            fail("ECDSA verification failed");
        }

        //
        // key decoding test - serialisation test
        //

        eck1 = (PublicKey)serializeDeserialize(vKey);

        checkEquals(eck1, vKey);

        eck2 = (PrivateKey)serializeDeserialize(sKey);

        checkEquals(eck2, sKey);

        //
        // ECDSA F2m generation test
        //
        s = Signature.getInstance("ECDSA", "BC");
        g = KeyPairGenerator.getInstance("ECDSA", "BC");

        curve = new ECCurve.F2m(
                239, // m
                36, // k
                new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), // a
                new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16)); // b
       
        ecSpec = new ECParameterSpec(
            curve,
            curve.decodePoint(Hex.decode("0457927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D61D8EE5077C33FECF6F1A16B268DE469C3C7744EA9A971649FC7A9616305")), // G
            new BigInteger("220855883097298041197912187592864814557886993776713230936715041207411783"), // n
            BigInteger.valueOf(4)); // h
       
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        throws InvalidKeyException
    {
        if (key instanceof ECPublicKey)
        {
            ECPublicKey    k = (ECPublicKey)key;
            ECParameterSpec s = k.getParameters();

            if (s == null)
            {
                s = ProviderUtil.getEcImplicitlyCa();

                return new ECPublicKeyParameters(
                            ((JCEECPublicKey)k).engineGetQ(),
                            new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
            }
            else
            {
                return new ECPublicKeyParameters(
                            k.getQ(),
                            new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
            }
        }

        throw new InvalidKeyException("can't identify EC public key.");
    }
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        throws InvalidKeyException
    {
        if (key instanceof ECPrivateKey)
        {
            ECPrivateKey  k = (ECPrivateKey)key;
            ECParameterSpec s = k.getParameters();

            if (s == null)
            {
                s = ProviderUtil.getEcImplicitlyCa();
            }

            return new ECPrivateKeyParameters(
                            k.getD(),
                            new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
        }
                       
        throw new InvalidKeyException("can't identify EC private key.");
    }
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            SecureRandom            random)
            throws InvalidAlgorithmParameterException
        {
            if (params instanceof ECParameterSpec)
            {
                ECParameterSpec p = (ECParameterSpec)params;
                this.ecParams = params;
   
                param = new ECKeyGenerationParameters(new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random);
   
                engine.init(param);
                initialised = true;
            }
            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)
            {
                if (this.algorithm.equals("ECGOST3410"))
                {
                    ECDomainParameters  ecP = ECGOST3410NamedCurves.getByName(((ECGenParameterSpec)params).getName());
                    if (ecP == null)
                    {
                        throw new InvalidAlgorithmParameterException("unknown curve name: " + ((ECGenParameterSpec)params).getName());
                    }

                    this.ecParams = new ECNamedCurveSpec(
                                                    ((ECGenParameterSpec)params).getName(),
                                                    ecP.getCurve(),
                                                    ecP.getG(),
                                                    ecP.getN(),
                                                    ecP.getH(),
                                                    ecP.getSeed());
                }
                else
                {
                    X9ECParameters  ecP = X962NamedCurves.getByName(((ECGenParameterSpec)params).getName());
                    if (ecP == null)
                    {
                        ecP = SECNamedCurves.getByName(((ECGenParameterSpec)params).getName());
                        if (ecP == null)
                        {
                            ecP = NISTNamedCurves.getByName(((ECGenParameterSpec)params).getName());
                        }
                        if (ecP == null)
                        {
                            ecP = TeleTrusTNamedCurves.getByName(((ECGenParameterSpec)params).getName());
                        }
                        if (ecP == null)
                        {
                            throw new InvalidAlgorithmParameterException("unknown curve name: " + ((ECGenParameterSpec)params).getName());
                        }
                    }

                    this.ecParams = new ECNamedCurveSpec(
                            ((ECGenParameterSpec)params).getName(),
                            ecP.getCurve(),
                            ecP.getG(),
                            ecP.getN(),
                            ecP.getH(),
                            ecP.getSeed());
                }

                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);
                initialised = true;
            }
            else if (params == null && ProviderUtil.getEcImplicitlyCa() != null)
            {
                ECParameterSpec p = ProviderUtil.getEcImplicitlyCa();
                this.ecParams = params;

                param = new ECKeyGenerationParameters(new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random);

                engine.init(param);
                initialised = true;
            }
            else if (params == null && ProviderUtil.getEcImplicitlyCa() == null)
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            ECPublicKeyParameters       pub = (ECPublicKeyParameters)pair.getPublic();
            ECPrivateKeyParameters      priv = (ECPrivateKeyParameters)pair.getPrivate();

            if (ecParams instanceof ECParameterSpec)
            {
                ECParameterSpec p = (ECParameterSpec)ecParams;
               
                return new KeyPair(new JCEECPublicKey(algorithm, pub, p),
                                   new JCEECPrivateKey(algorithm, priv, p));
            }
            else if (ecParams == null)
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Related Classes of org.bouncycastle.jce.spec.ECParameterSpec

  • org.bouncycastle.jcajce.provider.asymmetric.dstu.KeyFactorySpi
  • org.bouncycastle.jcajce.provider.asymmetric.dstu.KeyPairGeneratorSpi
  • org.bouncycastle.jcajce.provider.asymmetric.ec.KeyFactorySpi
  • org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi$EC
  • org.bouncycastle.jcajce.provider.asymmetric.ecgost.KeyFactorySpi
  • org.bouncycastle.jcajce.provider.asymmetric.ecgost.KeyPairGeneratorSpi
  • org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil
  • org.bouncycastle.jce.provider.asymmetric.ec.ECUtil
  • org.bouncycastle.jce.provider.asymmetric.ec.KeyFactory
  • org.bouncycastle.jce.provider.asymmetric.ec.KeyPairGenerator$EC
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