secnamedcurves.java

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            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect233r1
     */
    static X9ECParametersHolder sect233r1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 233;
            int k = 74;

            BigInteger a = BigInteger.valueOf(1);
            BigInteger b = fromHex("0066647EDE6C332C7F8C0923BB58213B333B20E9CE4281FE115F7D8F90AD");
            byte[] S = Hex.decode("74D59FF07F6B413D0EA14B344B20A2DB049B50C3");
            BigInteger n = fromHex("01000000000000000000000000000013E974E72F8A6922031D2603CFE0D7");
            BigInteger h = BigInteger.valueOf(2);

            ECCurve curve = new ECCurve.F2m(m, k, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B"
                + "01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect239k1
     */
    static X9ECParametersHolder sect239k1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 239;
            int k = 158;

            BigInteger a = ECConstants.ZERO;
            BigInteger b = BigInteger.valueOf(1);
            byte[] S = null;
            BigInteger n = fromHex("2000000000000000000000000000005A79FEC67CB6E91F1C1DA800E478A5");
            BigInteger h = BigInteger.valueOf(4);

            ECCurve curve = new ECCurve.F2m(m, k, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC"
                + "76310804F12E549BDB011C103089E73510ACB275FC312A5DC6B76553F0CA"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect283k1
     */
    static X9ECParametersHolder sect283k1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 283;
            int k1 = 5;
            int k2 = 7;
            int k3 = 12;

            BigInteger a = ECConstants.ZERO;
            BigInteger b = BigInteger.valueOf(1);
            byte[] S = null;
            BigInteger n = fromHex("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE9AE2ED07577265DFF7F94451E061E163C61");
            BigInteger h = BigInteger.valueOf(4);

            ECCurve curve = new ECCurve.F2m(m, k1, k2, k3, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("02"
            //+ "0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836"
                + "01CCDA380F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect283r1
     */
    static X9ECParametersHolder sect283r1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 283;
            int k1 = 5;
            int k2 = 7;
            int k3 = 12;

            BigInteger a = BigInteger.valueOf(1);
            BigInteger b = fromHex("027B680AC8B8596DA5A4AF8A19A0303FCA97FD7645309FA2A581485AF6263E313B79A2F5");
            byte[] S = Hex.decode("77E2B07370EB0F832A6DD5B62DFC88CD06BB84BE");
            BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEF90399660FC938A90165B042A7CEFADB307");
            BigInteger h = BigInteger.valueOf(2);

            ECCurve curve = new ECCurve.F2m(m, k1, k2, k3, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053"
                + "03676854FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect409k1
     */
    static X9ECParametersHolder sect409k1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 409;
            int k = 87;

            BigInteger a = ECConstants.ZERO;
            BigInteger b = BigInteger.valueOf(1);
            byte[] S = null;
            BigInteger n = fromHex("7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE5F83B2D4EA20400EC4557D5ED3E3E7CA5B4B5C83B8E01E5FCF");
            BigInteger h = BigInteger.valueOf(4);

            ECCurve curve = new ECCurve.F2m(m, k, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746"
                + "01E369050B7C4E42ACBA1DACBF04299C3460782F918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect409r1
     */
    static X9ECParametersHolder sect409r1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 409;
            int k = 87;

            BigInteger a = BigInteger.valueOf(1);
            BigInteger b = fromHex("0021A5C2C8EE9FEB5C4B9A753B7B476B7FD6422EF1F3DD674761FA99D6AC27C8A9A197B272822F6CD57A55AA4F50AE317B13545F");
            byte[] S = Hex.decode("4099B5A457F9D69F79213D094C4BCD4D4262210B");
            BigInteger n = fromHex("010000000000000000000000000000000000000000000000000001E2AAD6A612F33307BE5FA47C3C9E052F838164CD37D9A21173");
            BigInteger h = BigInteger.valueOf(2);

            ECCurve curve = new ECCurve.F2m(m, k, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7"
                + "0061B1CFAB6BE5F32BBFA78324ED106A7636B9C5A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect571k1
     */
    static X9ECParametersHolder sect571k1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 571;
            int k1 = 2;
            int k2 = 5;
            int k3 = 10;

            BigInteger a = ECConstants.ZERO;
            BigInteger b = BigInteger.valueOf(1);
            byte[] S = null;
            BigInteger n = fromHex("020000000000000000000000000000000000000000000000000000000000000000000000131850E1F19A63E4B391A8DB917F4138B630D84BE5D639381E91DEB45CFE778F637C1001");
            BigInteger h = BigInteger.valueOf(4);

            ECCurve curve = new ECCurve.F2m(m, k1, k2, k3, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("02"
            //+ "026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972"
                + "0349DC807F4FBF374F4AEADE3BCA95314DD58CEC9F307A54FFC61EFC006D8A2C9D4979C0AC44AEA74FBEBBB9F772AEDCB620B01A7BA7AF1B320430C8591984F601CD4C143EF1C7A3"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };

    /*
     * sect571r1
     */
    static X9ECParametersHolder sect571r1 = new X9ECParametersHolder()
    {
        protected X9ECParameters createParameters()
        {
            int m = 571;
            int k1 = 2;
            int k2 = 5;
            int k3 = 10;

            BigInteger a = BigInteger.valueOf(1);
            BigInteger b = fromHex("02F40E7E2221F295DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD8EFA59332BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A");
            byte[] S = Hex.decode("2AA058F73A0E33AB486B0F610410C53A7F132310");
            BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE661CE18FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47");
            BigInteger h = BigInteger.valueOf(2);

            ECCurve curve = new ECCurve.F2m(m, k1, k2, k3, a, b, n, h);
            //ECPoint G = curve.decodePoint(Hex.decode("03"
            //+ "0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19"));
            ECPoint G = curve.decodePoint(Hex.decode("04"
                + "0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19"
                + "037BF27342DA639B6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43BAB08A576291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B"));

            return new X9ECParameters(curve, G, n, h, S);
        }
    };


    static final Hashtable objIds = new Hashtable();
    static final Hashtable curves = new Hashtable();
    static final Hashtable names = new Hashtable();

    static void defineCurve(String name, DERObjectIdentifier oid, X9ECParametersHolder holder)
    {
        objIds.put(name, oid);
        names.put(oid, name);
        curves.put(oid, holder);
    }

    static
    {
        defineCurve("secp112r1", SECObjectIdentifiers.secp112r1, secp112r1);
        defineCurve("secp112r2", SECObjectIdentifiers.secp112r2, secp112r2);
        defineCurve("secp128r1", SECObjectIdentifiers.secp128r1, secp128r1);
        defineCurve("secp128r2", SECObjectIdentifiers.secp128r2, secp128r2);
        defineCurve("secp160k1", SECObjectIdentifiers.secp160k1, secp160k1);
        defineCurve("secp160r1", SECObjectIdentifiers.secp160r1, secp160r1);
        defineCurve("secp160r2", SECObjectIdentifiers.secp160r2, secp160r2);
        defineCurve("secp192k1", SECObjectIdentifiers.secp192k1, secp192k1);
        defineCurve("secp192r1", SECObjectIdentifiers.secp192r1, secp192r1);
        defineCurve("secp224k1", SECObjectIdentifiers.secp224k1, secp224k1);
        defineCurve("secp224r1", SECObjectIdentifiers.secp224r1, secp224r1); 
        defineCurve("secp256k1", SECObjectIdentifiers.secp256k1, secp256k1);
        defineCurve("secp256r1", SECObjectIdentifiers.secp256r1, secp256r1); 
        defineCurve("secp384r1", SECObjectIdentifiers.secp384r1, secp384r1); 
        defineCurve("secp521r1", SECObjectIdentifiers.secp521r1, secp521r1); 

        defineCurve("sect113r1", SECObjectIdentifiers.sect113r1, sect113r1);
        defineCurve("sect113r2", SECObjectIdentifiers.sect113r2, sect113r2);
        defineCurve("sect131r1", SECObjectIdentifiers.sect131r1, sect131r1);
        defineCurve("sect131r2", SECObjectIdentifiers.sect131r2, sect131r2);
        defineCurve("sect163k1", SECObjectIdentifiers.sect163k1, sect163k1);
        defineCurve("sect163r1", SECObjectIdentifiers.sect163r1, sect163r1);
        defineCurve("sect163r2", SECObjectIdentifiers.sect163r2, sect163r2);
        defineCurve("sect193r1", SECObjectIdentifiers.sect193r1, sect193r1);
        defineCurve("sect193r2", SECObjectIdentifiers.sect193r2, sect193r2);
        defineCurve("sect233k1", SECObjectIdentifiers.sect233k1, sect233k1);
        defineCurve("sect233r1", SECObjectIdentifiers.sect233r1, sect233r1);
        defineCurve("sect239k1", SECObjectIdentifiers.sect239k1, sect239k1);
        defineCurve("sect283k1", SECObjectIdentifiers.sect283k1, sect283k1);
        defineCurve("sect283r1", SECObjectIdentifiers.sect283r1, sect283r1);
        defineCurve("sect409k1", SECObjectIdentifiers.sect409k1, sect409k1);
        defineCurve("sect409r1", SECObjectIdentifiers.sect409r1, sect409r1);
        defineCurve("sect571k1", SECObjectIdentifiers.sect571k1, sect571k1);
        defineCurve("sect571r1", SECObjectIdentifiers.sect571r1, sect571r1); 
    }

    public static X9ECParameters getByName(
        String name)
    {
        DERObjectIdentifier oid = (DERObjectIdentifier)objIds.get(Strings.toLowerCase(name));

        if (oid != null)
        {
            return getByOID(oid);
        }

        return null;
    }

    /**
     * return the X9ECParameters object for the named curve represented by
     * the passed in object identifier. Null if the curve isn't present.
     *
     * @param oid an object identifier representing a named curve, if present.
     */
    public static X9ECParameters getByOID(
        DERObjectIdentifier oid)
    {
        X9ECParametersHolder holder = (X9ECParametersHolder)curves.get(oid);

        if (holder != null)
        {
            return holder.getParameters();
        }

        return null;
    }

    /**
     * return the object identifier signified by the passed in name. Null
     * if there is no object identifier associated with name.
     *
     * @return the object identifier associated with name, if present.
     */
    public static DERObjectIdentifier getOID(
        String name)
    {
        return (DERObjectIdentifier)objIds.get(Strings.toLowerCase(name));
    }

    /**
     * return the named curve name represented by the given object identifier.
     */
    public static String getName(
        DERObjectIdentifier oid)
    {
        return (String)names.get(oid);
    }

    /**
     * returns an enumeration containing the name strings for curves
     * contained in this structure.
     */
    public static Enumeration getNames()
    {
        return objIds.keys();
    }
}