1package org.bouncycastle.asn1.sec;
2
3import java.math.BigInteger;
4import java.util.Enumeration;
5import java.util.Hashtable;
6
7import org.bouncycastle.asn1.ASN1ObjectIdentifier;
8import org.bouncycastle.asn1.x9.X9ECParameters;
9import org.bouncycastle.asn1.x9.X9ECParametersHolder;
10import org.bouncycastle.asn1.x9.X9ECPoint;
11import org.bouncycastle.math.ec.ECConstants;
12import org.bouncycastle.math.ec.ECCurve;
13import org.bouncycastle.math.ec.endo.GLVTypeBEndomorphism;
14import org.bouncycastle.math.ec.endo.GLVTypeBParameters;
15import org.bouncycastle.util.Strings;
16import org.bouncycastle.util.encoders.Hex;
17
18public class SECNamedCurves
19{
20    private static ECCurve configureCurve(ECCurve curve)
21    {
22        return curve;
23    }
24
25    private static ECCurve configureCurveGLV(ECCurve c, GLVTypeBParameters p)
26    {
27        return c.configure().setEndomorphism(new GLVTypeBEndomorphism(c, p)).create();
28    }
29
30    private static BigInteger fromHex(
31        String hex)
32    {
33        return new BigInteger(1, Hex.decode(hex));
34    }
35
36    /*
37     * secp112r1
38     */
39    static X9ECParametersHolder secp112r1 = new X9ECParametersHolder()
40    {
41        protected X9ECParameters createParameters()
42        {
43            // p = (2^128 - 3) / 76439
44            BigInteger p = fromHex("DB7C2ABF62E35E668076BEAD208B");
45            BigInteger a = fromHex("DB7C2ABF62E35E668076BEAD2088");
46            BigInteger b = fromHex("659EF8BA043916EEDE8911702B22");
47            byte[] S = Hex.decode("00F50B028E4D696E676875615175290472783FB1");
48            BigInteger n = fromHex("DB7C2ABF62E35E7628DFAC6561C5");
49            BigInteger h = BigInteger.valueOf(1);
50
51            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
52            //ECPoint G = curve.decodePoint(Hex.decode("02"
53            //+ "09487239995A5EE76B55F9C2F098"));
54            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
55                + "09487239995A5EE76B55F9C2F098"
56                + "A89CE5AF8724C0A23E0E0FF77500"));
57
58            return new X9ECParameters(curve, G, n, h, S);
59        }
60    };
61
62    /*
63     * secp112r2
64     */
65    static X9ECParametersHolder secp112r2 = new X9ECParametersHolder()
66    {
67        protected X9ECParameters createParameters()
68        {
69            // p = (2^128 - 3) / 76439
70            BigInteger p = fromHex("DB7C2ABF62E35E668076BEAD208B");
71            BigInteger a = fromHex("6127C24C05F38A0AAAF65C0EF02C");
72            BigInteger b = fromHex("51DEF1815DB5ED74FCC34C85D709");
73            byte[] S = Hex.decode("002757A1114D696E6768756151755316C05E0BD4");
74            BigInteger n = fromHex("36DF0AAFD8B8D7597CA10520D04B");
75            BigInteger h = BigInteger.valueOf(4);
76
77            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
78            //ECPoint G = curve.decodePoint(Hex.decode("03"
79            //+ "4BA30AB5E892B4E1649DD0928643"));
80            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
81                + "4BA30AB5E892B4E1649DD0928643"
82                + "ADCD46F5882E3747DEF36E956E97"));
83
84            return new X9ECParameters(curve, G, n, h, S);
85        }
86    };
87
88    /*
89     * secp128r1
90     */
91    static X9ECParametersHolder secp128r1 = new X9ECParametersHolder()
92    {
93        protected X9ECParameters createParameters()
94        {
95            // p = 2^128 - 2^97 - 1
96            BigInteger p = fromHex("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF");
97            BigInteger a = fromHex("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFC");
98            BigInteger b = fromHex("E87579C11079F43DD824993C2CEE5ED3");
99            byte[] S = Hex.decode("000E0D4D696E6768756151750CC03A4473D03679");
100            BigInteger n = fromHex("FFFFFFFE0000000075A30D1B9038A115");
101            BigInteger h = BigInteger.valueOf(1);
102
103            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
104            //ECPoint G = curve.decodePoint(Hex.decode("03"
105            //+ "161FF7528B899B2D0C28607CA52C5B86"));
106            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
107                + "161FF7528B899B2D0C28607CA52C5B86"
108                + "CF5AC8395BAFEB13C02DA292DDED7A83"));
109
110            return new X9ECParameters(curve, G, n, h, S);
111        }
112    };
113
114    /*
115     * secp128r2
116     */
117    static X9ECParametersHolder secp128r2 = new X9ECParametersHolder()
118    {
119        protected X9ECParameters createParameters()
120        {
121            // p = 2^128 - 2^97 - 1
122            BigInteger p = fromHex("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF");
123            BigInteger a = fromHex("D6031998D1B3BBFEBF59CC9BBFF9AEE1");
124            BigInteger b = fromHex("5EEEFCA380D02919DC2C6558BB6D8A5D");
125            byte[] S = Hex.decode("004D696E67687561517512D8F03431FCE63B88F4");
126            BigInteger n = fromHex("3FFFFFFF7FFFFFFFBE0024720613B5A3");
127            BigInteger h = BigInteger.valueOf(4);
128
129            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
130            //ECPoint G = curve.decodePoint(Hex.decode("02"
131            //+ "7B6AA5D85E572983E6FB32A7CDEBC140"));
132            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
133                + "7B6AA5D85E572983E6FB32A7CDEBC140"
134                + "27B6916A894D3AEE7106FE805FC34B44"));
135
136            return new X9ECParameters(curve, G, n, h, S);
137        }
138    };
139
140    /*
141     * secp160k1
142     */
143    static X9ECParametersHolder secp160k1 = new X9ECParametersHolder()
144    {
145        protected X9ECParameters createParameters()
146        {
147            // p = 2^160 - 2^32 - 2^14 - 2^12 - 2^9 - 2^8 - 2^7 - 2^3 - 2^2 - 1
148            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73");
149            BigInteger a = ECConstants.ZERO;
150            BigInteger b = BigInteger.valueOf(7);
151            byte[] S = null;
152            BigInteger n = fromHex("0100000000000000000001B8FA16DFAB9ACA16B6B3");
153            BigInteger h = BigInteger.valueOf(1);
154
155            GLVTypeBParameters glv = new GLVTypeBParameters(
156                new BigInteger("9ba48cba5ebcb9b6bd33b92830b2a2e0e192f10a", 16),
157                new BigInteger("c39c6c3b3a36d7701b9c71a1f5804ae5d0003f4", 16),
158                new BigInteger[]{
159                    new BigInteger("9162fbe73984472a0a9e", 16),
160                    new BigInteger("-96341f1138933bc2f505", 16) },
161                new BigInteger[]{
162                    new BigInteger("127971af8721782ecffa3", 16),
163                    new BigInteger("9162fbe73984472a0a9e", 16) },
164                new BigInteger("9162fbe73984472a0a9d0590", 16),
165                new BigInteger("96341f1138933bc2f503fd44", 16),
166                176);
167
168            ECCurve curve = configureCurveGLV(new ECCurve.Fp(p, a, b, n, h), glv);
169//            ECPoint G = curve.decodePoint(Hex.decode("02"
170//                + "3B4C382CE37AA192A4019E763036F4F5DD4D7EBB"));
171            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
172                + "3B4C382CE37AA192A4019E763036F4F5DD4D7EBB"
173                + "938CF935318FDCED6BC28286531733C3F03C4FEE"));
174
175            return new X9ECParameters(curve, G, n, h, S);
176        }
177    };
178
179    /*
180     * secp160r1
181     */
182    static X9ECParametersHolder secp160r1 = new X9ECParametersHolder()
183    {
184        protected X9ECParameters createParameters()
185        {
186            // p = 2^160 - 2^31 - 1
187            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF");
188            BigInteger a = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC");
189            BigInteger b = fromHex("1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45");
190            byte[] S = Hex.decode("1053CDE42C14D696E67687561517533BF3F83345");
191            BigInteger n = fromHex("0100000000000000000001F4C8F927AED3CA752257");
192            BigInteger h = BigInteger.valueOf(1);
193
194            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
195            //ECPoint G = curve.decodePoint(Hex.decode("02"
196                //+ "4A96B5688EF573284664698968C38BB913CBFC82"));
197            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
198                + "4A96B5688EF573284664698968C38BB913CBFC82"
199                + "23A628553168947D59DCC912042351377AC5FB32"));
200
201            return new X9ECParameters(curve, G, n, h, S);
202        }
203    };
204
205    /*
206     * secp160r2
207     */
208    static X9ECParametersHolder secp160r2 = new X9ECParametersHolder()
209    {
210        protected X9ECParameters createParameters()
211        {
212            // p = 2^160 - 2^32 - 2^14 - 2^12 - 2^9 - 2^8 - 2^7 - 2^3 - 2^2 - 1
213            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73");
214            BigInteger a = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70");
215            BigInteger b = fromHex("B4E134D3FB59EB8BAB57274904664D5AF50388BA");
216            byte[] S = Hex.decode("B99B99B099B323E02709A4D696E6768756151751");
217            BigInteger n = fromHex("0100000000000000000000351EE786A818F3A1A16B");
218            BigInteger h = BigInteger.valueOf(1);
219
220            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
221            //ECPoint G = curve.decodePoint(Hex.decode("02"
222            //+ "52DCB034293A117E1F4FF11B30F7199D3144CE6D"));
223            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
224                + "52DCB034293A117E1F4FF11B30F7199D3144CE6D"
225                + "FEAFFEF2E331F296E071FA0DF9982CFEA7D43F2E"));
226
227            return new X9ECParameters(curve, G, n, h, S);
228        }
229    };
230
231    /*
232     * secp192k1
233     */
234    static X9ECParametersHolder secp192k1 = new X9ECParametersHolder()
235    {
236        protected X9ECParameters createParameters()
237        {
238            // p = 2^192 - 2^32 - 2^12 - 2^8 - 2^7 - 2^6 - 2^3 - 1
239            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37");
240            BigInteger a = ECConstants.ZERO;
241            BigInteger b = BigInteger.valueOf(3);
242            byte[] S = null;
243            BigInteger n = fromHex("FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D");
244            BigInteger h = BigInteger.valueOf(1);
245
246            GLVTypeBParameters glv = new GLVTypeBParameters(
247                new BigInteger("bb85691939b869c1d087f601554b96b80cb4f55b35f433c2", 16),
248                new BigInteger("3d84f26c12238d7b4f3d516613c1759033b1a5800175d0b1", 16),
249                new BigInteger[]{
250                    new BigInteger("71169be7330b3038edb025f1", 16),
251                    new BigInteger("-b3fb3400dec5c4adceb8655c", 16) },
252                new BigInteger[]{
253                    new BigInteger("12511cfe811d0f4e6bc688b4d", 16),
254                    new BigInteger("71169be7330b3038edb025f1", 16) },
255                new BigInteger("71169be7330b3038edb025f1d0f9", 16),
256                new BigInteger("b3fb3400dec5c4adceb8655d4c94", 16),
257                208);
258
259            ECCurve curve = configureCurveGLV(new ECCurve.Fp(p, a, b, n, h), glv);
260            //ECPoint G = curve.decodePoint(Hex.decode("03"
261            //+ "DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D"));
262            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
263                + "DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D"
264                + "9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D"));
265
266            return new X9ECParameters(curve, G, n, h, S);
267        }
268    };
269
270    /*
271     * secp192r1
272     */
273    static X9ECParametersHolder secp192r1 = new X9ECParametersHolder()
274    {
275        protected X9ECParameters createParameters()
276        {
277            // p = 2^192 - 2^64 - 1
278            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF");
279            BigInteger a = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC");
280            BigInteger b = fromHex("64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1");
281            byte[] S = Hex.decode("3045AE6FC8422F64ED579528D38120EAE12196D5");
282            BigInteger n = fromHex("FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831");
283            BigInteger h = BigInteger.valueOf(1);
284
285            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
286            //ECPoint G = curve.decodePoint(Hex.decode("03"
287            //+ "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012"));
288            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
289                + "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012"
290                + "07192B95FFC8DA78631011ED6B24CDD573F977A11E794811"));
291
292            return new X9ECParameters(curve, G, n, h, S);
293        }
294    };
295
296    /*
297     * secp224k1
298     */
299    static X9ECParametersHolder secp224k1 = new X9ECParametersHolder()
300    {
301        protected X9ECParameters createParameters()
302        {
303            // p = 2^224 - 2^32 - 2^12 - 2^11 - 2^9 - 2^7 - 2^4 - 2 - 1
304            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D");
305            BigInteger a = ECConstants.ZERO;
306            BigInteger b = BigInteger.valueOf(5);
307            byte[] S = null;
308            BigInteger n = fromHex("010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7");
309            BigInteger h = BigInteger.valueOf(1);
310
311            GLVTypeBParameters glv = new GLVTypeBParameters(
312                new BigInteger("fe0e87005b4e83761908c5131d552a850b3f58b749c37cf5b84d6768", 16),
313                new BigInteger("60dcd2104c4cbc0be6eeefc2bdd610739ec34e317f9b33046c9e4788", 16),
314                new BigInteger[]{
315                    new BigInteger("6b8cf07d4ca75c88957d9d670591", 16),
316                    new BigInteger("-b8adf1378a6eb73409fa6c9c637d", 16) },
317                new BigInteger[]{
318                    new BigInteger("1243ae1b4d71613bc9f780a03690e", 16),
319                    new BigInteger("6b8cf07d4ca75c88957d9d670591", 16) },
320                new BigInteger("6b8cf07d4ca75c88957d9d67059037a4", 16),
321                new BigInteger("b8adf1378a6eb73409fa6c9c637ba7f5", 16),
322                240);
323
324            ECCurve curve = configureCurveGLV(new ECCurve.Fp(p, a, b, n, h), glv);
325            //ECPoint G = curve.decodePoint(Hex.decode("03"
326            //+ "A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C"));
327            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
328                + "A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C"
329                + "7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5"));
330
331            return new X9ECParameters(curve, G, n, h, S);
332        }
333    };
334
335    /*
336     * secp224r1
337     */
338    static X9ECParametersHolder secp224r1 = new X9ECParametersHolder()
339    {
340        protected X9ECParameters createParameters()
341        {
342            // p = 2^224 - 2^96 + 1
343            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001");
344            BigInteger a = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE");
345            BigInteger b = fromHex("B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4");
346            byte[] S = Hex.decode("BD71344799D5C7FCDC45B59FA3B9AB8F6A948BC5");
347            BigInteger n = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D");
348            BigInteger h = BigInteger.valueOf(1);
349
350            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
351            //ECPoint G = curve.decodePoint(Hex.decode("02"
352            //+ "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21"));
353            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
354                + "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21"
355                + "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34"));
356
357            return new X9ECParameters(curve, G, n, h, S);
358        }
359    };
360
361    /*
362     * secp256k1
363     */
364    static X9ECParametersHolder secp256k1 = new X9ECParametersHolder()
365    {
366        protected X9ECParameters createParameters()
367        {
368            // p = 2^256 - 2^32 - 2^9 - 2^8 - 2^7 - 2^6 - 2^4 - 1
369            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F");
370            BigInteger a = ECConstants.ZERO;
371            BigInteger b = BigInteger.valueOf(7);
372            byte[] S = null;
373            BigInteger n = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141");
374            BigInteger h = BigInteger.valueOf(1);
375
376            GLVTypeBParameters glv = new GLVTypeBParameters(
377                new BigInteger("7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee", 16),
378                new BigInteger("5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72", 16),
379                new BigInteger[]{
380                    new BigInteger("3086d221a7d46bcde86c90e49284eb15", 16),
381                    new BigInteger("-e4437ed6010e88286f547fa90abfe4c3", 16) },
382                new BigInteger[]{
383                    new BigInteger("114ca50f7a8e2f3f657c1108d9d44cfd8", 16),
384                    new BigInteger("3086d221a7d46bcde86c90e49284eb15", 16) },
385                new BigInteger("3086d221a7d46bcde86c90e49284eb153dab", 16),
386                new BigInteger("e4437ed6010e88286f547fa90abfe4c42212", 16),
387                272);
388
389            ECCurve curve = configureCurveGLV(new ECCurve.Fp(p, a, b, n, h), glv);
390            //ECPoint G = curve.decodePoint(Hex.decode("02"
391            //+ "79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"));
392            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
393                + "79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"
394                + "483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8"));
395
396            return new X9ECParameters(curve, G, n, h, S);
397        }
398    };
399
400    /*
401     * secp256r1
402     */
403    static X9ECParametersHolder secp256r1 = new X9ECParametersHolder()
404    {
405        protected X9ECParameters createParameters()
406        {
407            // p = 2^224 (2^32 - 1) + 2^192 + 2^96 - 1
408            BigInteger p = fromHex("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF");
409            BigInteger a = fromHex("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC");
410            BigInteger b = fromHex("5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B");
411            byte[] S = Hex.decode("C49D360886E704936A6678E1139D26B7819F7E90");
412            BigInteger n = fromHex("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551");
413            BigInteger h = BigInteger.valueOf(1);
414
415            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
416            //ECPoint G = curve.decodePoint(Hex.decode("03"
417            //+ "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296"));
418            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
419                + "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296"
420                + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5"));
421
422            return new X9ECParameters(curve, G, n, h, S);
423        }
424    };
425
426    /*
427     * secp384r1
428     */
429    static X9ECParametersHolder secp384r1 = new X9ECParametersHolder()
430    {
431        protected X9ECParameters createParameters()
432        {
433            // p = 2^384 - 2^128 - 2^96 + 2^32 - 1
434            BigInteger p = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF");
435            BigInteger a = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC");
436            BigInteger b = fromHex("B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF");
437            byte[] S = Hex.decode("A335926AA319A27A1D00896A6773A4827ACDAC73");
438            BigInteger n = fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973");
439            BigInteger h = BigInteger.valueOf(1);
440
441            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
442            //ECPoint G = curve.decodePoint(Hex.decode("03"
443            //+ "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7"));
444            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
445                + "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7"
446                + "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F"));
447
448            return new X9ECParameters(curve, G, n, h, S);
449        }
450    };
451
452    /*
453     * secp521r1
454     */
455    static X9ECParametersHolder secp521r1 = new X9ECParametersHolder()
456    {
457        protected X9ECParameters createParameters()
458        {
459            // p = 2^521 - 1
460            BigInteger p = fromHex("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
461            BigInteger a = fromHex("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC");
462            BigInteger b = fromHex("0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00");
463            byte[] S = Hex.decode("D09E8800291CB85396CC6717393284AAA0DA64BA");
464            BigInteger n = fromHex("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409");
465            BigInteger h = BigInteger.valueOf(1);
466
467            ECCurve curve = configureCurve(new ECCurve.Fp(p, a, b, n, h));
468
469            //ECPoint G = curve.decodePoint(Hex.decode("02"
470            //+ "00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66"));
471            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
472                + "00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66"
473                + "011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650"));
474
475            return new X9ECParameters(curve, G, n, h, S);
476        }
477    };
478
479    /*
480     * sect113r1
481     */
482    static X9ECParametersHolder sect113r1 = new X9ECParametersHolder()
483    {
484        protected X9ECParameters createParameters()
485        {
486            int m = 113;
487            int k = 9;
488
489            BigInteger a = fromHex("003088250CA6E7C7FE649CE85820F7");
490            BigInteger b = fromHex("00E8BEE4D3E2260744188BE0E9C723");
491            byte[] S = Hex.decode("10E723AB14D696E6768756151756FEBF8FCB49A9");
492            BigInteger n = fromHex("0100000000000000D9CCEC8A39E56F");
493            BigInteger h = BigInteger.valueOf(2);
494
495            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
496            //ECPoint G = curve.decodePoint(Hex.decode("03"
497            //+ "009D73616F35F4AB1407D73562C10F"));
498            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
499                + "009D73616F35F4AB1407D73562C10F"
500                + "00A52830277958EE84D1315ED31886"));
501
502            return new X9ECParameters(curve, G, n, h, S);
503        }
504    };
505
506    /*
507     * sect113r2
508     */
509    static X9ECParametersHolder sect113r2 = new X9ECParametersHolder()
510    {
511        protected X9ECParameters createParameters()
512        {
513            int m = 113;
514            int k = 9;
515
516            BigInteger a = fromHex("00689918DBEC7E5A0DD6DFC0AA55C7");
517            BigInteger b = fromHex("0095E9A9EC9B297BD4BF36E059184F");
518            byte[] S = Hex.decode("10C0FB15760860DEF1EEF4D696E676875615175D");
519            BigInteger n = fromHex("010000000000000108789B2496AF93");
520            BigInteger h = BigInteger.valueOf(2);
521
522            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
523            //ECPoint G = curve.decodePoint(Hex.decode("03"
524            //+ "01A57A6A7B26CA5EF52FCDB8164797"));
525            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
526                + "01A57A6A7B26CA5EF52FCDB8164797"
527                + "00B3ADC94ED1FE674C06E695BABA1D"));
528
529            return new X9ECParameters(curve, G, n, h, S);
530        }
531    };
532
533    /*
534     * sect131r1
535     */
536    static X9ECParametersHolder sect131r1 = new X9ECParametersHolder()
537    {
538        protected X9ECParameters createParameters()
539        {
540            int m = 131;
541            int k1 = 2;
542            int k2 = 3;
543            int k3 = 8;
544
545            BigInteger a = fromHex("07A11B09A76B562144418FF3FF8C2570B8");
546            BigInteger b = fromHex("0217C05610884B63B9C6C7291678F9D341");
547            byte[] S = Hex.decode("4D696E676875615175985BD3ADBADA21B43A97E2");
548            BigInteger n = fromHex("0400000000000000023123953A9464B54D");
549            BigInteger h = BigInteger.valueOf(2);
550
551            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
552            //ECPoint G = curve.decodePoint(Hex.decode("03"
553            //+ "0081BAF91FDF9833C40F9C181343638399"));
554            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
555                + "0081BAF91FDF9833C40F9C181343638399"
556                + "078C6E7EA38C001F73C8134B1B4EF9E150"));
557
558            return new X9ECParameters(curve, G, n, h, S);
559        }
560    };
561
562    /*
563     * sect131r2
564     */
565    static X9ECParametersHolder sect131r2 = new X9ECParametersHolder()
566    {
567        protected X9ECParameters createParameters()
568        {
569            int m = 131;
570            int k1 = 2;
571            int k2 = 3;
572            int k3 = 8;
573
574            BigInteger a = fromHex("03E5A88919D7CAFCBF415F07C2176573B2");
575            BigInteger b = fromHex("04B8266A46C55657AC734CE38F018F2192");
576            byte[] S = Hex.decode("985BD3ADBAD4D696E676875615175A21B43A97E3");
577            BigInteger n = fromHex("0400000000000000016954A233049BA98F");
578            BigInteger h = BigInteger.valueOf(2);
579
580            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
581            //ECPoint G = curve.decodePoint(Hex.decode("03"
582            //+ "0356DCD8F2F95031AD652D23951BB366A8"));
583            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
584                + "0356DCD8F2F95031AD652D23951BB366A8"
585                + "0648F06D867940A5366D9E265DE9EB240F"));
586
587            return new X9ECParameters(curve, G, n, h, S);
588        }
589    };
590
591    /*
592     * sect163k1
593     */
594    static X9ECParametersHolder sect163k1 = new X9ECParametersHolder()
595    {
596        protected X9ECParameters createParameters()
597        {
598            int m = 163;
599            int k1 = 3;
600            int k2 = 6;
601            int k3 = 7;
602
603            BigInteger a = BigInteger.valueOf(1);
604            BigInteger b = BigInteger.valueOf(1);
605            byte[] S = null;
606            BigInteger n = fromHex("04000000000000000000020108A2E0CC0D99F8A5EF");
607            BigInteger h = BigInteger.valueOf(2);
608
609            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
610            //ECPoint G = curve.decodePoint(Hex.decode("03"
611            //+ "02FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE8"));
612            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
613                + "02FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE8"
614                + "0289070FB05D38FF58321F2E800536D538CCDAA3D9"));
615
616            return new X9ECParameters(curve, G, n, h, S);
617        }
618    };
619
620    /*
621     * sect163r1
622     */
623    static X9ECParametersHolder sect163r1 = new X9ECParametersHolder()
624    {
625        protected X9ECParameters createParameters()
626        {
627            int m = 163;
628            int k1 = 3;
629            int k2 = 6;
630            int k3 = 7;
631
632            BigInteger a = fromHex("07B6882CAAEFA84F9554FF8428BD88E246D2782AE2");
633            BigInteger b = fromHex("0713612DCDDCB40AAB946BDA29CA91F73AF958AFD9");
634            byte[] S = Hex.decode("24B7B137C8A14D696E6768756151756FD0DA2E5C");
635            BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFF48AAB689C29CA710279B");
636            BigInteger h = BigInteger.valueOf(2);
637
638            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
639            //ECPoint G = curve.decodePoint(Hex.decode("03"
640            //+ "0369979697AB43897789566789567F787A7876A654"));
641            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
642                + "0369979697AB43897789566789567F787A7876A654"
643                + "00435EDB42EFAFB2989D51FEFCE3C80988F41FF883"));
644
645            return new X9ECParameters(curve, G, n, h, S);
646        }
647    };
648
649    /*
650     * sect163r2
651     */
652    static X9ECParametersHolder sect163r2 = new X9ECParametersHolder()
653    {
654        protected X9ECParameters createParameters()
655        {
656            int m = 163;
657            int k1 = 3;
658            int k2 = 6;
659            int k3 = 7;
660
661            BigInteger a = BigInteger.valueOf(1);
662            BigInteger b = fromHex("020A601907B8C953CA1481EB10512F78744A3205FD");
663            byte[] S = Hex.decode("85E25BFE5C86226CDB12016F7553F9D0E693A268");
664            BigInteger n = fromHex("040000000000000000000292FE77E70C12A4234C33");
665            BigInteger h = BigInteger.valueOf(2);
666
667            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
668            //ECPoint G = curve.decodePoint(Hex.decode("03"
669            //+ "03F0EBA16286A2D57EA0991168D4994637E8343E36"));
670            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
671                + "03F0EBA16286A2D57EA0991168D4994637E8343E36"
672                + "00D51FBC6C71A0094FA2CDD545B11C5C0C797324F1"));
673
674            return new X9ECParameters(curve, G, n, h, S);
675        }
676    };
677
678    /*
679     * sect193r1
680     */
681    static X9ECParametersHolder sect193r1 = new X9ECParametersHolder()
682    {
683        protected X9ECParameters createParameters()
684        {
685            int m = 193;
686            int k = 15;
687
688            BigInteger a = fromHex("0017858FEB7A98975169E171F77B4087DE098AC8A911DF7B01");
689            BigInteger b = fromHex("00FDFB49BFE6C3A89FACADAA7A1E5BBC7CC1C2E5D831478814");
690            byte[] S = Hex.decode("103FAEC74D696E676875615175777FC5B191EF30");
691            BigInteger n = fromHex("01000000000000000000000000C7F34A778F443ACC920EBA49");
692            BigInteger h = BigInteger.valueOf(2);
693
694            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
695            //ECPoint G = curve.decodePoint(Hex.decode("03"
696            //+ "01F481BC5F0FF84A74AD6CDF6FDEF4BF6179625372D8C0C5E1"));
697            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
698                + "01F481BC5F0FF84A74AD6CDF6FDEF4BF6179625372D8C0C5E1"
699                + "0025E399F2903712CCF3EA9E3A1AD17FB0B3201B6AF7CE1B05"));
700
701            return new X9ECParameters(curve, G, n, h, S);
702        }
703    };
704
705    /*
706     * sect193r2
707     */
708    static X9ECParametersHolder sect193r2 = new X9ECParametersHolder()
709    {
710        protected X9ECParameters createParameters()
711        {
712            int m = 193;
713            int k = 15;
714
715            BigInteger a = fromHex("0163F35A5137C2CE3EA6ED8667190B0BC43ECD69977702709B");
716            BigInteger b = fromHex("00C9BB9E8927D4D64C377E2AB2856A5B16E3EFB7F61D4316AE");
717            byte[] S = Hex.decode("10B7B4D696E676875615175137C8A16FD0DA2211");
718            BigInteger n = fromHex("010000000000000000000000015AAB561B005413CCD4EE99D5");
719            BigInteger h = BigInteger.valueOf(2);
720
721            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
722            //ECPoint G = curve.decodePoint(Hex.decode("03"
723            //+ "00D9B67D192E0367C803F39E1A7E82CA14A651350AAE617E8F"));
724            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
725                + "00D9B67D192E0367C803F39E1A7E82CA14A651350AAE617E8F"
726                + "01CE94335607C304AC29E7DEFBD9CA01F596F927224CDECF6C"));
727
728            return new X9ECParameters(curve, G, n, h, S);
729        }
730    };
731
732    /*
733     * sect233k1
734     */
735    static X9ECParametersHolder sect233k1 = new X9ECParametersHolder()
736    {
737        protected X9ECParameters createParameters()
738        {
739            int m = 233;
740            int k = 74;
741
742            BigInteger a = ECConstants.ZERO;
743            BigInteger b = BigInteger.valueOf(1);
744            byte[] S = null;
745            BigInteger n = fromHex("8000000000000000000000000000069D5BB915BCD46EFB1AD5F173ABDF");
746            BigInteger h = BigInteger.valueOf(4);
747
748            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
749            //ECPoint G = curve.decodePoint(Hex.decode("02"
750            //+ "017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD6126"));
751            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
752                + "017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD6126"
753                + "01DB537DECE819B7F70F555A67C427A8CD9BF18AEB9B56E0C11056FAE6A3"));
754
755            return new X9ECParameters(curve, G, n, h, S);
756        }
757    };
758
759    /*
760     * sect233r1
761     */
762    static X9ECParametersHolder sect233r1 = new X9ECParametersHolder()
763    {
764        protected X9ECParameters createParameters()
765        {
766            int m = 233;
767            int k = 74;
768
769            BigInteger a = BigInteger.valueOf(1);
770            BigInteger b = fromHex("0066647EDE6C332C7F8C0923BB58213B333B20E9CE4281FE115F7D8F90AD");
771            byte[] S = Hex.decode("74D59FF07F6B413D0EA14B344B20A2DB049B50C3");
772            BigInteger n = fromHex("01000000000000000000000000000013E974E72F8A6922031D2603CFE0D7");
773            BigInteger h = BigInteger.valueOf(2);
774
775            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
776            //ECPoint G = curve.decodePoint(Hex.decode("03"
777            //+ "00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B"));
778            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
779                + "00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B"
780                + "01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052"));
781
782            return new X9ECParameters(curve, G, n, h, S);
783        }
784    };
785
786    /*
787     * sect239k1
788     */
789    static X9ECParametersHolder sect239k1 = new X9ECParametersHolder()
790    {
791        protected X9ECParameters createParameters()
792        {
793            int m = 239;
794            int k = 158;
795
796            BigInteger a = ECConstants.ZERO;
797            BigInteger b = BigInteger.valueOf(1);
798            byte[] S = null;
799            BigInteger n = fromHex("2000000000000000000000000000005A79FEC67CB6E91F1C1DA800E478A5");
800            BigInteger h = BigInteger.valueOf(4);
801
802            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
803            //ECPoint G = curve.decodePoint(Hex.decode("03"
804            //+ "29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC"));
805            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
806                + "29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC"
807                + "76310804F12E549BDB011C103089E73510ACB275FC312A5DC6B76553F0CA"));
808
809            return new X9ECParameters(curve, G, n, h, S);
810        }
811    };
812
813    /*
814     * sect283k1
815     */
816    static X9ECParametersHolder sect283k1 = new X9ECParametersHolder()
817    {
818        protected X9ECParameters createParameters()
819        {
820            int m = 283;
821            int k1 = 5;
822            int k2 = 7;
823            int k3 = 12;
824
825            BigInteger a = ECConstants.ZERO;
826            BigInteger b = BigInteger.valueOf(1);
827            byte[] S = null;
828            BigInteger n = fromHex("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE9AE2ED07577265DFF7F94451E061E163C61");
829            BigInteger h = BigInteger.valueOf(4);
830
831            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
832            //ECPoint G = curve.decodePoint(Hex.decode("02"
833            //+ "0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836"));
834            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
835                + "0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836"
836                + "01CCDA380F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259"));
837
838            return new X9ECParameters(curve, G, n, h, S);
839        }
840    };
841
842    /*
843     * sect283r1
844     */
845    static X9ECParametersHolder sect283r1 = new X9ECParametersHolder()
846    {
847        protected X9ECParameters createParameters()
848        {
849            int m = 283;
850            int k1 = 5;
851            int k2 = 7;
852            int k3 = 12;
853
854            BigInteger a = BigInteger.valueOf(1);
855            BigInteger b = fromHex("027B680AC8B8596DA5A4AF8A19A0303FCA97FD7645309FA2A581485AF6263E313B79A2F5");
856            byte[] S = Hex.decode("77E2B07370EB0F832A6DD5B62DFC88CD06BB84BE");
857            BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEF90399660FC938A90165B042A7CEFADB307");
858            BigInteger h = BigInteger.valueOf(2);
859
860            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
861            //ECPoint G = curve.decodePoint(Hex.decode("03"
862            //+ "05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053"));
863            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
864                + "05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053"
865                + "03676854FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4"));
866
867            return new X9ECParameters(curve, G, n, h, S);
868        }
869    };
870
871    /*
872     * sect409k1
873     */
874    static X9ECParametersHolder sect409k1 = new X9ECParametersHolder()
875    {
876        protected X9ECParameters createParameters()
877        {
878            int m = 409;
879            int k = 87;
880
881            BigInteger a = ECConstants.ZERO;
882            BigInteger b = BigInteger.valueOf(1);
883            byte[] S = null;
884            BigInteger n = fromHex("7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE5F83B2D4EA20400EC4557D5ED3E3E7CA5B4B5C83B8E01E5FCF");
885            BigInteger h = BigInteger.valueOf(4);
886
887            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
888            //ECPoint G = curve.decodePoint(Hex.decode("03"
889            //+ "0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746"));
890            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
891                + "0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746"
892                + "01E369050B7C4E42ACBA1DACBF04299C3460782F918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B"));
893
894            return new X9ECParameters(curve, G, n, h, S);
895        }
896    };
897
898    /*
899     * sect409r1
900     */
901    static X9ECParametersHolder sect409r1 = new X9ECParametersHolder()
902    {
903        protected X9ECParameters createParameters()
904        {
905            int m = 409;
906            int k = 87;
907
908            BigInteger a = BigInteger.valueOf(1);
909            BigInteger b = fromHex("0021A5C2C8EE9FEB5C4B9A753B7B476B7FD6422EF1F3DD674761FA99D6AC27C8A9A197B272822F6CD57A55AA4F50AE317B13545F");
910            byte[] S = Hex.decode("4099B5A457F9D69F79213D094C4BCD4D4262210B");
911            BigInteger n = fromHex("010000000000000000000000000000000000000000000000000001E2AAD6A612F33307BE5FA47C3C9E052F838164CD37D9A21173");
912            BigInteger h = BigInteger.valueOf(2);
913
914            ECCurve curve = configureCurve(new ECCurve.F2m(m, k, a, b, n, h));
915            //ECPoint G = curve.decodePoint(Hex.decode("03"
916            //+ "015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7"));
917            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
918                + "015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7"
919                + "0061B1CFAB6BE5F32BBFA78324ED106A7636B9C5A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706"));
920
921            return new X9ECParameters(curve, G, n, h, S);
922        }
923    };
924
925    /*
926     * sect571k1
927     */
928    static X9ECParametersHolder sect571k1 = new X9ECParametersHolder()
929    {
930        protected X9ECParameters createParameters()
931        {
932            int m = 571;
933            int k1 = 2;
934            int k2 = 5;
935            int k3 = 10;
936
937            BigInteger a = ECConstants.ZERO;
938            BigInteger b = BigInteger.valueOf(1);
939            byte[] S = null;
940            BigInteger n = fromHex("020000000000000000000000000000000000000000000000000000000000000000000000131850E1F19A63E4B391A8DB917F4138B630D84BE5D639381E91DEB45CFE778F637C1001");
941            BigInteger h = BigInteger.valueOf(4);
942
943            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
944            //ECPoint G = curve.decodePoint(Hex.decode("02"
945            //+ "026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972"));
946            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
947                + "026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972"
948                + "0349DC807F4FBF374F4AEADE3BCA95314DD58CEC9F307A54FFC61EFC006D8A2C9D4979C0AC44AEA74FBEBBB9F772AEDCB620B01A7BA7AF1B320430C8591984F601CD4C143EF1C7A3"));
949
950            return new X9ECParameters(curve, G, n, h, S);
951        }
952    };
953
954    /*
955     * sect571r1
956     */
957    static X9ECParametersHolder sect571r1 = new X9ECParametersHolder()
958    {
959        protected X9ECParameters createParameters()
960        {
961            int m = 571;
962            int k1 = 2;
963            int k2 = 5;
964            int k3 = 10;
965
966            BigInteger a = BigInteger.valueOf(1);
967            BigInteger b = fromHex("02F40E7E2221F295DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD8EFA59332BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A");
968            byte[] S = Hex.decode("2AA058F73A0E33AB486B0F610410C53A7F132310");
969            BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE661CE18FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47");
970            BigInteger h = BigInteger.valueOf(2);
971
972            ECCurve curve = configureCurve(new ECCurve.F2m(m, k1, k2, k3, a, b, n, h));
973            //ECPoint G = curve.decodePoint(Hex.decode("03"
974            //+ "0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19"));
975            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
976                + "0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19"
977                + "037BF27342DA639B6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43BAB08A576291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B"));
978
979            return new X9ECParameters(curve, G, n, h, S);
980        }
981    };
982
983
984    static final Hashtable objIds = new Hashtable();
985    static final Hashtable curves = new Hashtable();
986    static final Hashtable names = new Hashtable();
987
988    static void defineCurve(String name, ASN1ObjectIdentifier oid, X9ECParametersHolder holder)
989    {
990        objIds.put(name, oid);
991        names.put(oid, name);
992        curves.put(oid, holder);
993    }
994
995    static
996    {
997        defineCurve("secp112r1", SECObjectIdentifiers.secp112r1, secp112r1);
998        defineCurve("secp112r2", SECObjectIdentifiers.secp112r2, secp112r2);
999        defineCurve("secp128r1", SECObjectIdentifiers.secp128r1, secp128r1);
1000        defineCurve("secp128r2", SECObjectIdentifiers.secp128r2, secp128r2);
1001        defineCurve("secp160k1", SECObjectIdentifiers.secp160k1, secp160k1);
1002        defineCurve("secp160r1", SECObjectIdentifiers.secp160r1, secp160r1);
1003        defineCurve("secp160r2", SECObjectIdentifiers.secp160r2, secp160r2);
1004        defineCurve("secp192k1", SECObjectIdentifiers.secp192k1, secp192k1);
1005        defineCurve("secp192r1", SECObjectIdentifiers.secp192r1, secp192r1);
1006        defineCurve("secp224k1", SECObjectIdentifiers.secp224k1, secp224k1);
1007        defineCurve("secp224r1", SECObjectIdentifiers.secp224r1, secp224r1);
1008        defineCurve("secp256k1", SECObjectIdentifiers.secp256k1, secp256k1);
1009        defineCurve("secp256r1", SECObjectIdentifiers.secp256r1, secp256r1);
1010        defineCurve("secp384r1", SECObjectIdentifiers.secp384r1, secp384r1);
1011        defineCurve("secp521r1", SECObjectIdentifiers.secp521r1, secp521r1);
1012
1013        defineCurve("sect113r1", SECObjectIdentifiers.sect113r1, sect113r1);
1014        defineCurve("sect113r2", SECObjectIdentifiers.sect113r2, sect113r2);
1015        defineCurve("sect131r1", SECObjectIdentifiers.sect131r1, sect131r1);
1016        defineCurve("sect131r2", SECObjectIdentifiers.sect131r2, sect131r2);
1017        defineCurve("sect163k1", SECObjectIdentifiers.sect163k1, sect163k1);
1018        defineCurve("sect163r1", SECObjectIdentifiers.sect163r1, sect163r1);
1019        defineCurve("sect163r2", SECObjectIdentifiers.sect163r2, sect163r2);
1020        defineCurve("sect193r1", SECObjectIdentifiers.sect193r1, sect193r1);
1021        defineCurve("sect193r2", SECObjectIdentifiers.sect193r2, sect193r2);
1022        defineCurve("sect233k1", SECObjectIdentifiers.sect233k1, sect233k1);
1023        defineCurve("sect233r1", SECObjectIdentifiers.sect233r1, sect233r1);
1024        defineCurve("sect239k1", SECObjectIdentifiers.sect239k1, sect239k1);
1025        defineCurve("sect283k1", SECObjectIdentifiers.sect283k1, sect283k1);
1026        defineCurve("sect283r1", SECObjectIdentifiers.sect283r1, sect283r1);
1027        defineCurve("sect409k1", SECObjectIdentifiers.sect409k1, sect409k1);
1028        defineCurve("sect409r1", SECObjectIdentifiers.sect409r1, sect409r1);
1029        defineCurve("sect571k1", SECObjectIdentifiers.sect571k1, sect571k1);
1030        defineCurve("sect571r1", SECObjectIdentifiers.sect571r1, sect571r1);
1031    }
1032
1033    public static X9ECParameters getByName(
1034        String name)
1035    {
1036        ASN1ObjectIdentifier oid = getOID(name);
1037        return oid == null ? null : getByOID(oid);
1038    }
1039
1040    /**
1041     * return the X9ECParameters object for the named curve represented by
1042     * the passed in object identifier. Null if the curve isn't present.
1043     *
1044     * @param oid an object identifier representing a named curve, if present.
1045     */
1046    public static X9ECParameters getByOID(
1047        ASN1ObjectIdentifier oid)
1048    {
1049        X9ECParametersHolder holder = (X9ECParametersHolder)curves.get(oid);
1050        return holder == null ? null : holder.getParameters();
1051    }
1052
1053    /**
1054     * return the object identifier signified by the passed in name. Null
1055     * if there is no object identifier associated with name.
1056     *
1057     * @return the object identifier associated with name, if present.
1058     */
1059    public static ASN1ObjectIdentifier getOID(
1060        String name)
1061    {
1062        return (ASN1ObjectIdentifier)objIds.get(Strings.toLowerCase(name));
1063    }
1064
1065    /**
1066     * return the named curve name represented by the given object identifier.
1067     */
1068    public static String getName(
1069        ASN1ObjectIdentifier oid)
1070    {
1071        return (String)names.get(oid);
1072    }
1073
1074    /**
1075     * returns an enumeration containing the name strings for curves
1076     * contained in this structure.
1077     */
1078    public static Enumeration getNames()
1079    {
1080        return names.elements();
1081    }
1082}
1083