1package org.bouncycastle.crypto.ec;
2
3import java.math.BigInteger;
4import java.util.Enumeration;
5import java.util.Hashtable;
6import java.util.Vector;
7
8import org.bouncycastle.asn1.ASN1ObjectIdentifier;
9import org.bouncycastle.asn1.sec.SECObjectIdentifiers;
10import org.bouncycastle.asn1.x9.X9ECParameters;
11import org.bouncycastle.asn1.x9.X9ECParametersHolder;
12import org.bouncycastle.asn1.x9.X9ECPoint;
13import org.bouncycastle.math.ec.ECCurve;
14import org.bouncycastle.math.ec.ECPoint;
15// BEGIN android-removed
16// import org.bouncycastle.math.ec.custom.djb.Curve25519;
17// import org.bouncycastle.math.ec.custom.sec.SecP128R1Curve;
18// import org.bouncycastle.math.ec.custom.sec.SecP160K1Curve;
19// import org.bouncycastle.math.ec.custom.sec.SecP160R1Curve;
20// import org.bouncycastle.math.ec.custom.sec.SecP160R2Curve;
21// END android-removed
22import org.bouncycastle.math.ec.custom.sec.SecP192K1Curve;
23import org.bouncycastle.math.ec.custom.sec.SecP192R1Curve;
24import org.bouncycastle.math.ec.custom.sec.SecP224K1Curve;
25import org.bouncycastle.math.ec.custom.sec.SecP224R1Curve;
26import org.bouncycastle.math.ec.custom.sec.SecP256K1Curve;
27import org.bouncycastle.math.ec.custom.sec.SecP256R1Curve;
28import org.bouncycastle.math.ec.custom.sec.SecP384R1Curve;
29import org.bouncycastle.math.ec.custom.sec.SecP521R1Curve;
30// BEGIN android-removed
31// import org.bouncycastle.math.ec.custom.sec.SecT113R1Curve;
32// import org.bouncycastle.math.ec.custom.sec.SecT113R2Curve;
33// import org.bouncycastle.math.ec.custom.sec.SecT131R1Curve;
34// import org.bouncycastle.math.ec.custom.sec.SecT131R2Curve;
35// import org.bouncycastle.math.ec.custom.sec.SecT163K1Curve;
36// import org.bouncycastle.math.ec.custom.sec.SecT163R1Curve;
37// import org.bouncycastle.math.ec.custom.sec.SecT163R2Curve;
38// import org.bouncycastle.math.ec.custom.sec.SecT193R1Curve;
39// import org.bouncycastle.math.ec.custom.sec.SecT193R2Curve;
40// import org.bouncycastle.math.ec.custom.sec.SecT233K1Curve;
41// import org.bouncycastle.math.ec.custom.sec.SecT233R1Curve;
42// import org.bouncycastle.math.ec.custom.sec.SecT239K1Curve;
43// import org.bouncycastle.math.ec.custom.sec.SecT283K1Curve;
44// import org.bouncycastle.math.ec.custom.sec.SecT283R1Curve;
45// import org.bouncycastle.math.ec.custom.sec.SecT409K1Curve;
46// import org.bouncycastle.math.ec.custom.sec.SecT409R1Curve;
47// import org.bouncycastle.math.ec.custom.sec.SecT571K1Curve;
48// import org.bouncycastle.math.ec.custom.sec.SecT571R1Curve;
49// END android-removed
50import org.bouncycastle.math.ec.endo.GLVTypeBEndomorphism;
51import org.bouncycastle.math.ec.endo.GLVTypeBParameters;
52import org.bouncycastle.util.Strings;
53import org.bouncycastle.util.encoders.Hex;
54
55public class CustomNamedCurves
56{
57    private static ECCurve configureCurve(ECCurve curve)
58    {
59        return curve;
60    }
61
62    private static ECCurve configureCurveGLV(ECCurve c, GLVTypeBParameters p)
63    {
64        return c.configure().setEndomorphism(new GLVTypeBEndomorphism(c, p)).create();
65    }
66
67    // BEGIN Android-removed: Unsupported curves
68    /*
69    /*
70     * curve25519
71     *
72    static X9ECParametersHolder curve25519 = new X9ECParametersHolder()
73    {
74        protected X9ECParameters createParameters()
75        {
76            byte[] S = null;
77            ECCurve curve = configureCurve(new Curve25519());
78
79            /*
80             * NOTE: Curve25519 was specified in Montgomery form. Rewriting in Weierstrass form
81             * involves substitution of variables, so the base-point x coordinate is 9 + (486662 / 3).
82             *
83             * The Curve25519 paper doesn't say which of the two possible y values the base
84             * point has. The choice here is guided by language in the Ed25519 paper.
85             *
86             * (The other possible y value is 5F51E65E475F794B1FE122D388B72EB36DC2B28192839E4DD6163A5D81312C14)
87             *
88            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
89                + "2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD245A"
90                + "20AE19A1B8A086B4E01EDD2C7748D14C923D4D7E6D7C61B229E9C5A27ECED3D9"));
91
92            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
93        }
94    };
95
96    /*
97     * secp128r1
98     *
99    static X9ECParametersHolder secp128r1 = new X9ECParametersHolder()
100    {
101        protected X9ECParameters createParameters()
102        {
103            byte[] S = Hex.decode("000E0D4D696E6768756151750CC03A4473D03679");
104            ECCurve curve = configureCurve(new SecP128R1Curve());
105            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
106                + "161FF7528B899B2D0C28607CA52C5B86"
107                + "CF5AC8395BAFEB13C02DA292DDED7A83"));
108            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
109        }
110    };
111
112    /*
113     * secp160k1
114     *
115    static X9ECParametersHolder secp160k1 = new X9ECParametersHolder()
116    {
117        protected X9ECParameters createParameters()
118        {
119            byte[] S = null;
120            GLVTypeBParameters glv = new GLVTypeBParameters(
121                new BigInteger("9ba48cba5ebcb9b6bd33b92830b2a2e0e192f10a", 16),
122                new BigInteger("c39c6c3b3a36d7701b9c71a1f5804ae5d0003f4", 16),
123                new BigInteger[]{
124                    new BigInteger("9162fbe73984472a0a9e", 16),
125                    new BigInteger("-96341f1138933bc2f505", 16) },
126                new BigInteger[]{
127                    new BigInteger("127971af8721782ecffa3", 16),
128                    new BigInteger("9162fbe73984472a0a9e", 16) },
129                new BigInteger("9162fbe73984472a0a9d0590", 16),
130                new BigInteger("96341f1138933bc2f503fd44", 16),
131                176);
132            ECCurve curve = configureCurveGLV(new SecP160K1Curve(), glv);
133            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
134                + "3B4C382CE37AA192A4019E763036F4F5DD4D7EBB"
135                + "938CF935318FDCED6BC28286531733C3F03C4FEE"));
136            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
137        }
138    };
139
140    /*
141     * secp160r1
142     *
143    static X9ECParametersHolder secp160r1 = new X9ECParametersHolder()
144    {
145        protected X9ECParameters createParameters()
146        {
147            byte[] S = Hex.decode("1053CDE42C14D696E67687561517533BF3F83345");
148            ECCurve curve = configureCurve(new SecP160R1Curve());
149            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
150                + "4A96B5688EF573284664698968C38BB913CBFC82"
151                + "23A628553168947D59DCC912042351377AC5FB32"));
152            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
153        }
154    };
155
156    /*
157     * secp160r2
158     *
159    static X9ECParametersHolder secp160r2 = new X9ECParametersHolder()
160    {
161        protected X9ECParameters createParameters()
162        {
163            byte[] S = Hex.decode("B99B99B099B323E02709A4D696E6768756151751");
164            ECCurve curve = configureCurve(new SecP160R2Curve());
165            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
166                + "52DCB034293A117E1F4FF11B30F7199D3144CE6D"
167                + "FEAFFEF2E331F296E071FA0DF9982CFEA7D43F2E"));
168            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
169        }
170    };
171    */
172    // END Android-removed: Unsupported curves
173
174    /*
175     * secp192k1
176     */
177    static X9ECParametersHolder secp192k1 = new X9ECParametersHolder()
178    {
179        protected X9ECParameters createParameters()
180        {
181            byte[] S = null;
182            GLVTypeBParameters glv = new GLVTypeBParameters(
183                new BigInteger("bb85691939b869c1d087f601554b96b80cb4f55b35f433c2", 16),
184                new BigInteger("3d84f26c12238d7b4f3d516613c1759033b1a5800175d0b1", 16),
185                new BigInteger[]{
186                    new BigInteger("71169be7330b3038edb025f1", 16),
187                    new BigInteger("-b3fb3400dec5c4adceb8655c", 16) },
188                new BigInteger[]{
189                    new BigInteger("12511cfe811d0f4e6bc688b4d", 16),
190                    new BigInteger("71169be7330b3038edb025f1", 16) },
191                new BigInteger("71169be7330b3038edb025f1d0f9", 16),
192                new BigInteger("b3fb3400dec5c4adceb8655d4c94", 16),
193                208);
194            ECCurve curve = configureCurveGLV(new SecP192K1Curve(), glv);
195            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
196                + "DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D"
197                + "9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D"));
198            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
199        }
200    };
201
202    /*
203     * secp192r1
204     */
205    static X9ECParametersHolder secp192r1 = new X9ECParametersHolder()
206    {
207        protected X9ECParameters createParameters()
208        {
209            byte[] S = Hex.decode("3045AE6FC8422F64ED579528D38120EAE12196D5");
210            ECCurve curve = configureCurve(new SecP192R1Curve());
211            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
212                + "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012"
213                + "07192B95FFC8DA78631011ED6B24CDD573F977A11E794811"));
214            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
215        }
216    };
217
218    /*
219     * secp224k1
220     */
221    static X9ECParametersHolder secp224k1 = new X9ECParametersHolder()
222    {
223        protected X9ECParameters createParameters()
224        {
225            byte[] S = null;
226            GLVTypeBParameters glv = new GLVTypeBParameters(
227                new BigInteger("fe0e87005b4e83761908c5131d552a850b3f58b749c37cf5b84d6768", 16),
228                new BigInteger("60dcd2104c4cbc0be6eeefc2bdd610739ec34e317f9b33046c9e4788", 16),
229                new BigInteger[]{
230                    new BigInteger("6b8cf07d4ca75c88957d9d670591", 16),
231                    new BigInteger("-b8adf1378a6eb73409fa6c9c637d", 16) },
232                new BigInteger[]{
233                    new BigInteger("1243ae1b4d71613bc9f780a03690e", 16),
234                    new BigInteger("6b8cf07d4ca75c88957d9d670591", 16) },
235                new BigInteger("6b8cf07d4ca75c88957d9d67059037a4", 16),
236                new BigInteger("b8adf1378a6eb73409fa6c9c637ba7f5", 16),
237                240);
238            ECCurve curve = configureCurveGLV(new SecP224K1Curve(), glv);
239            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
240                + "A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C"
241                + "7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5"));
242            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
243        }
244    };
245
246    /*
247     * secp224r1
248     */
249    static X9ECParametersHolder secp224r1 = new X9ECParametersHolder()
250    {
251        protected X9ECParameters createParameters()
252        {
253            byte[] S = Hex.decode("BD71344799D5C7FCDC45B59FA3B9AB8F6A948BC5");
254            ECCurve curve = configureCurve(new SecP224R1Curve());
255            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
256                + "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21"
257                + "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34"));
258            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
259        }
260    };
261
262    /*
263     * secp256k1
264     */
265    static X9ECParametersHolder secp256k1 = new X9ECParametersHolder()
266    {
267        protected X9ECParameters createParameters()
268        {
269            byte[] S = null;
270            GLVTypeBParameters glv = new GLVTypeBParameters(
271                new BigInteger("7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee", 16),
272                new BigInteger("5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72", 16),
273                new BigInteger[]{
274                    new BigInteger("3086d221a7d46bcde86c90e49284eb15", 16),
275                    new BigInteger("-e4437ed6010e88286f547fa90abfe4c3", 16) },
276                new BigInteger[]{
277                    new BigInteger("114ca50f7a8e2f3f657c1108d9d44cfd8", 16),
278                    new BigInteger("3086d221a7d46bcde86c90e49284eb15", 16) },
279                new BigInteger("3086d221a7d46bcde86c90e49284eb153dab", 16),
280                new BigInteger("e4437ed6010e88286f547fa90abfe4c42212", 16),
281                272);
282            ECCurve curve = configureCurveGLV(new SecP256K1Curve(), glv);
283            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
284                + "79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"
285                + "483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8"));
286            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
287        }
288    };
289
290    /*
291     * secp256r1
292     */
293    static X9ECParametersHolder secp256r1 = new X9ECParametersHolder()
294    {
295        protected X9ECParameters createParameters()
296        {
297            byte[] S = Hex.decode("C49D360886E704936A6678E1139D26B7819F7E90");
298            ECCurve curve = configureCurve(new SecP256R1Curve());
299            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
300                + "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296"
301                + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5"));
302            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
303        }
304    };
305
306    /*
307     * secp384r1
308     */
309    static X9ECParametersHolder secp384r1 = new X9ECParametersHolder()
310    {
311        protected X9ECParameters createParameters()
312        {
313            byte[] S = Hex.decode("A335926AA319A27A1D00896A6773A4827ACDAC73");
314            ECCurve curve = configureCurve(new SecP384R1Curve());
315            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
316                + "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7"
317                + "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F"));
318            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
319        }
320    };
321
322    /*
323     * secp521r1
324     */
325    static X9ECParametersHolder secp521r1 = new X9ECParametersHolder()
326    {
327        protected X9ECParameters createParameters()
328        {
329            byte[] S = Hex.decode("D09E8800291CB85396CC6717393284AAA0DA64BA");
330            ECCurve curve = configureCurve(new SecP521R1Curve());
331            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
332                + "00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66"
333                + "011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650"));
334            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
335        }
336    };
337
338    // BEGIN Android-removed: Unsupported curves
339    /*
340    /*
341     * sect113r1
342     *
343    static X9ECParametersHolder sect113r1 = new X9ECParametersHolder()
344    {
345        protected X9ECParameters createParameters()
346        {
347            byte[] S = Hex.decode("10E723AB14D696E6768756151756FEBF8FCB49A9");
348            ECCurve curve = configureCurve(new SecT113R1Curve());
349            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
350                + "009D73616F35F4AB1407D73562C10F"
351                + "00A52830277958EE84D1315ED31886"));
352            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
353        }
354    };
355
356    /*
357     * sect113r2
358     *
359    static X9ECParametersHolder sect113r2 = new X9ECParametersHolder()
360    {
361        protected X9ECParameters createParameters()
362        {
363            byte[] S = Hex.decode("10C0FB15760860DEF1EEF4D696E676875615175D");
364            ECCurve curve = configureCurve(new SecT113R2Curve());
365            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
366                + "01A57A6A7B26CA5EF52FCDB8164797"
367                + "00B3ADC94ED1FE674C06E695BABA1D"));
368            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
369        }
370    };
371
372    /*
373     * sect131r1
374     *
375    static X9ECParametersHolder sect131r1 = new X9ECParametersHolder()
376    {
377        protected X9ECParameters createParameters()
378        {
379            byte[] S = Hex.decode("4D696E676875615175985BD3ADBADA21B43A97E2");
380            ECCurve curve = configureCurve(new SecT131R1Curve());
381            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
382                + "0081BAF91FDF9833C40F9C181343638399"
383                + "078C6E7EA38C001F73C8134B1B4EF9E150"));
384            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
385        }
386    };
387
388    /*
389     * sect131r2
390     *
391    static X9ECParametersHolder sect131r2 = new X9ECParametersHolder()
392    {
393        protected X9ECParameters createParameters()
394        {
395            byte[] S = Hex.decode("985BD3ADBAD4D696E676875615175A21B43A97E3");
396            ECCurve curve = configureCurve(new SecT131R2Curve());
397            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
398                + "0356DCD8F2F95031AD652D23951BB366A8"
399                + "0648F06D867940A5366D9E265DE9EB240F"));
400            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
401        }
402    };
403
404    /*
405     * sect163k1
406     *
407    static X9ECParametersHolder sect163k1 = new X9ECParametersHolder()
408    {
409        protected X9ECParameters createParameters()
410        {
411            byte[] S = null;
412            ECCurve curve = configureCurve(new SecT163K1Curve());
413            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
414                + "02FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE8"
415                + "0289070FB05D38FF58321F2E800536D538CCDAA3D9"));
416            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
417        }
418    };
419
420    /*
421     * sect163r1
422     *
423    static X9ECParametersHolder sect163r1 = new X9ECParametersHolder()
424    {
425        protected X9ECParameters createParameters()
426        {
427            byte[] S = Hex.decode("24B7B137C8A14D696E6768756151756FD0DA2E5C");
428            ECCurve curve = configureCurve(new SecT163R1Curve());
429            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
430                + "0369979697AB43897789566789567F787A7876A654"
431                + "00435EDB42EFAFB2989D51FEFCE3C80988F41FF883"));
432            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
433        }
434    };
435
436    /*
437     * sect163r2
438     *
439    static X9ECParametersHolder sect163r2 = new X9ECParametersHolder()
440    {
441        protected X9ECParameters createParameters()
442        {
443            byte[] S = Hex.decode("85E25BFE5C86226CDB12016F7553F9D0E693A268");
444            ECCurve curve = configureCurve(new SecT163R2Curve());
445            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
446                + "03F0EBA16286A2D57EA0991168D4994637E8343E36"
447                + "00D51FBC6C71A0094FA2CDD545B11C5C0C797324F1"));
448            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
449        }
450    };
451
452    /*
453     * sect193r1
454     *
455    static X9ECParametersHolder sect193r1 = new X9ECParametersHolder()
456    {
457        protected X9ECParameters createParameters()
458        {
459            byte[] S = Hex.decode("103FAEC74D696E676875615175777FC5B191EF30");
460            ECCurve curve = configureCurve(new SecT193R1Curve());
461            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
462                + "01F481BC5F0FF84A74AD6CDF6FDEF4BF6179625372D8C0C5E1"
463                + "0025E399F2903712CCF3EA9E3A1AD17FB0B3201B6AF7CE1B05"));
464            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
465        }
466    };
467
468    /*
469     * sect193r2
470     *
471    static X9ECParametersHolder sect193r2 = new X9ECParametersHolder()
472    {
473        protected X9ECParameters createParameters()
474        {
475            byte[] S = Hex.decode("10B7B4D696E676875615175137C8A16FD0DA2211");
476            ECCurve curve = configureCurve(new SecT193R2Curve());
477            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
478                + "00D9B67D192E0367C803F39E1A7E82CA14A651350AAE617E8F"
479                + "01CE94335607C304AC29E7DEFBD9CA01F596F927224CDECF6C"));
480            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
481        }
482    };
483
484    /*
485     * sect233k1
486     *
487    static X9ECParametersHolder sect233k1 = new X9ECParametersHolder()
488    {
489        protected X9ECParameters createParameters()
490        {
491            byte[] S = null;
492            ECCurve curve = configureCurve(new SecT233K1Curve());
493            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
494                + "017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD6126"
495                + "01DB537DECE819B7F70F555A67C427A8CD9BF18AEB9B56E0C11056FAE6A3"));
496            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
497        }
498    };
499
500    /*
501     * sect233r1
502     *
503    static X9ECParametersHolder sect233r1 = new X9ECParametersHolder()
504    {
505        protected X9ECParameters createParameters()
506        {
507            byte[] S = Hex.decode("74D59FF07F6B413D0EA14B344B20A2DB049B50C3");
508            ECCurve curve = configureCurve(new SecT233R1Curve());
509            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
510                + "00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B"
511                + "01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052"));
512            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
513        }
514    };
515
516    /*
517     * sect239k1
518     *
519    static X9ECParametersHolder sect239k1 = new X9ECParametersHolder()
520    {
521        protected X9ECParameters createParameters()
522        {
523            byte[] S = null;
524            ECCurve curve = configureCurve(new SecT239K1Curve());
525            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
526                + "29A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC"
527                + "76310804F12E549BDB011C103089E73510ACB275FC312A5DC6B76553F0CA"));
528            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
529        }
530    };
531
532    /*
533     * sect283k1
534     *
535    static X9ECParametersHolder sect283k1 = new X9ECParametersHolder()
536    {
537        protected X9ECParameters createParameters()
538        {
539            byte[] S = null;
540            ECCurve curve = configureCurve(new SecT283K1Curve());
541            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
542                + "0503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836"
543                + "01CCDA380F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259"));
544            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
545        }
546    };
547
548    /*
549     * sect283r1
550     *
551    static X9ECParametersHolder sect283r1 = new X9ECParametersHolder()
552    {
553        protected X9ECParameters createParameters()
554        {
555            byte[] S = Hex.decode("77E2B07370EB0F832A6DD5B62DFC88CD06BB84BE");
556            ECCurve curve = configureCurve(new SecT283R1Curve());
557            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
558                + "05F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053"
559                + "03676854FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4"));
560            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
561        }
562    };
563
564    /*
565     * sect409k1
566     *
567    static X9ECParametersHolder sect409k1 = new X9ECParametersHolder()
568    {
569        protected X9ECParameters createParameters()
570        {
571            byte[] S = null;
572            ECCurve curve = configureCurve(new SecT409K1Curve());
573            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
574                + "0060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746"
575                + "01E369050B7C4E42ACBA1DACBF04299C3460782F918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B"));
576            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
577        }
578    };
579
580    /*
581     * sect409r1
582     *
583    static X9ECParametersHolder sect409r1 = new X9ECParametersHolder()
584    {
585        protected X9ECParameters createParameters()
586        {
587            byte[] S = Hex.decode("4099B5A457F9D69F79213D094C4BCD4D4262210B");
588            ECCurve curve = configureCurve(new SecT409R1Curve());
589            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
590                + "015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7"
591                + "0061B1CFAB6BE5F32BBFA78324ED106A7636B9C5A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706"));
592            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
593        }
594    };
595
596    /*
597     * sect571k1
598     *
599    static X9ECParametersHolder sect571k1 = new X9ECParametersHolder()
600    {
601        protected X9ECParameters createParameters()
602        {
603            byte[] S = null;
604            ECCurve curve = configureCurve(new SecT571K1Curve());
605            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
606                + "026EB7A859923FBC82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E647DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972"
607                + "0349DC807F4FBF374F4AEADE3BCA95314DD58CEC9F307A54FFC61EFC006D8A2C9D4979C0AC44AEA74FBEBBB9F772AEDCB620B01A7BA7AF1B320430C8591984F601CD4C143EF1C7A3"));
608            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
609        }
610    };
611
612    /*
613     * sect571r1
614     *
615    static X9ECParametersHolder sect571r1 = new X9ECParametersHolder()
616    {
617        protected X9ECParameters createParameters()
618        {
619            byte[] S = Hex.decode("2AA058F73A0E33AB486B0F610410C53A7F132310");
620            ECCurve curve = configureCurve(new SecT571R1Curve());
621            X9ECPoint G = new X9ECPoint(curve, Hex.decode("04"
622                + "0303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19"
623                + "037BF27342DA639B6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43BAB08A576291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B"));
624            return new X9ECParameters(curve, G, curve.getOrder(), curve.getCofactor(), S);
625        }
626    };
627    */
628    // END Android-removed: Unsupported curves
629
630
631    static final Hashtable nameToCurve = new Hashtable();
632    static final Hashtable nameToOID = new Hashtable();
633    static final Hashtable oidToCurve = new Hashtable();
634    static final Hashtable oidToName = new Hashtable();
635    static final Vector names = new Vector();
636
637    static void defineCurve(String name, X9ECParametersHolder holder)
638    {
639        names.addElement(name);
640        name = Strings.toLowerCase(name);
641        nameToCurve.put(name, holder);
642    }
643
644    static void defineCurveWithOID(String name, ASN1ObjectIdentifier oid, X9ECParametersHolder holder)
645    {
646        names.addElement(name);
647        oidToName.put(oid, name);
648        oidToCurve.put(oid, holder);
649        name = Strings.toLowerCase(name);
650        nameToOID.put(name, oid);
651        nameToCurve.put(name, holder);
652    }
653
654    static void defineCurveAlias(String name, ASN1ObjectIdentifier oid)
655    {
656        Object curve = oidToCurve.get(oid);
657        if (curve == null)
658        {
659            throw new IllegalStateException();
660        }
661
662        name = Strings.toLowerCase(name);
663        nameToOID.put(name, oid);
664        nameToCurve.put(name, curve);
665    }
666
667    static
668    {
669        // BEGIN Android-removed: Unsupported curves
670        /*
671        defineCurve("curve25519", curve25519);
672
673//        defineCurveWithOID("secp112r1", SECObjectIdentifiers.secp112r1, secp112r1);
674//        defineCurveWithOID("secp112r2", SECObjectIdentifiers.secp112r2, secp112r2);
675        defineCurveWithOID("secp128r1", SECObjectIdentifiers.secp128r1, secp128r1);
676//        defineCurveWithOID("secp128r2", SECObjectIdentifiers.secp128r2, secp128r2);
677        defineCurveWithOID("secp160k1", SECObjectIdentifiers.secp160k1, secp160k1);
678        defineCurveWithOID("secp160r1", SECObjectIdentifiers.secp160r1, secp160r1);
679        defineCurveWithOID("secp160r2", SECObjectIdentifiers.secp160r2, secp160r2);
680        */
681        // END Android-removed: Unsupported curves
682        defineCurveWithOID("secp192k1", SECObjectIdentifiers.secp192k1, secp192k1);
683        defineCurveWithOID("secp192r1", SECObjectIdentifiers.secp192r1, secp192r1);
684        defineCurveWithOID("secp224k1", SECObjectIdentifiers.secp224k1, secp224k1);
685        defineCurveWithOID("secp224r1", SECObjectIdentifiers.secp224r1, secp224r1);
686        defineCurveWithOID("secp256k1", SECObjectIdentifiers.secp256k1, secp256k1);
687        defineCurveWithOID("secp256r1", SECObjectIdentifiers.secp256r1, secp256r1);
688        defineCurveWithOID("secp384r1", SECObjectIdentifiers.secp384r1, secp384r1);
689        defineCurveWithOID("secp521r1", SECObjectIdentifiers.secp521r1, secp521r1);
690
691        // BEGIN Android-removed: Unsupported curves
692        /*
693        defineCurveWithOID("sect113r1", SECObjectIdentifiers.sect113r1, sect113r1);
694        defineCurveWithOID("sect113r2", SECObjectIdentifiers.sect113r2, sect113r2);
695        defineCurveWithOID("sect131r1", SECObjectIdentifiers.sect131r1, sect131r1);
696        defineCurveWithOID("sect131r2", SECObjectIdentifiers.sect131r2, sect131r2);
697        defineCurveWithOID("sect163k1", SECObjectIdentifiers.sect163k1, sect163k1);
698        defineCurveWithOID("sect163r1", SECObjectIdentifiers.sect163r1, sect163r1);
699        defineCurveWithOID("sect163r2", SECObjectIdentifiers.sect163r2, sect163r2);
700        defineCurveWithOID("sect193r1", SECObjectIdentifiers.sect193r1, sect193r1);
701        defineCurveWithOID("sect193r2", SECObjectIdentifiers.sect193r2, sect193r2);
702        defineCurveWithOID("sect233k1", SECObjectIdentifiers.sect233k1, sect233k1);
703        defineCurveWithOID("sect233r1", SECObjectIdentifiers.sect233r1, sect233r1);
704        defineCurveWithOID("sect239k1", SECObjectIdentifiers.sect239k1, sect239k1);
705        defineCurveWithOID("sect283k1", SECObjectIdentifiers.sect283k1, sect283k1);
706        defineCurveWithOID("sect283r1", SECObjectIdentifiers.sect283r1, sect283r1);
707        defineCurveWithOID("sect409k1", SECObjectIdentifiers.sect409k1, sect409k1);
708        defineCurveWithOID("sect409r1", SECObjectIdentifiers.sect409r1, sect409r1);
709        defineCurveWithOID("sect571k1", SECObjectIdentifiers.sect571k1, sect571k1);
710        defineCurveWithOID("sect571r1", SECObjectIdentifiers.sect571r1, sect571r1);
711
712        defineCurveAlias("B-163", SECObjectIdentifiers.sect163r2);
713        defineCurveAlias("B-233", SECObjectIdentifiers.sect233r1);
714        defineCurveAlias("B-283", SECObjectIdentifiers.sect283r1);
715        defineCurveAlias("B-409", SECObjectIdentifiers.sect409r1);
716        defineCurveAlias("B-571", SECObjectIdentifiers.sect571r1);
717
718        defineCurveAlias("K-163", SECObjectIdentifiers.sect163k1);
719        defineCurveAlias("K-233", SECObjectIdentifiers.sect233k1);
720        defineCurveAlias("K-283", SECObjectIdentifiers.sect283k1);
721        defineCurveAlias("K-409", SECObjectIdentifiers.sect409k1);
722        defineCurveAlias("K-571", SECObjectIdentifiers.sect571k1);
723        */
724        // END Android-removed: Unsupported curves
725
726        defineCurveAlias("P-192", SECObjectIdentifiers.secp192r1);
727        defineCurveAlias("P-224", SECObjectIdentifiers.secp224r1);
728        defineCurveAlias("P-256", SECObjectIdentifiers.secp256r1);
729        defineCurveAlias("P-384", SECObjectIdentifiers.secp384r1);
730        defineCurveAlias("P-521", SECObjectIdentifiers.secp521r1);
731    }
732
733    public static X9ECParameters getByName(String name)
734    {
735        X9ECParametersHolder holder = (X9ECParametersHolder)nameToCurve.get(Strings.toLowerCase(name));
736        return holder == null ? null : holder.getParameters();
737    }
738
739    /**
740     * return the X9ECParameters object for the named curve represented by the passed in object
741     * identifier. Null if the curve isn't present.
742     *
743     * @param oid
744     *            an object identifier representing a named curve, if present.
745     */
746    public static X9ECParameters getByOID(ASN1ObjectIdentifier oid)
747    {
748        X9ECParametersHolder holder = (X9ECParametersHolder)oidToCurve.get(oid);
749        return holder == null ? null : holder.getParameters();
750    }
751
752    /**
753     * return the object identifier signified by the passed in name. Null if there is no object
754     * identifier associated with name.
755     *
756     * @return the object identifier associated with name, if present.
757     */
758    public static ASN1ObjectIdentifier getOID(String name)
759    {
760        return (ASN1ObjectIdentifier)nameToOID.get(Strings.toLowerCase(name));
761    }
762
763    /**
764     * return the named curve name represented by the given object identifier.
765     */
766    public static String getName(ASN1ObjectIdentifier oid)
767    {
768        return (String)oidToName.get(oid);
769    }
770
771    /**
772     * returns an enumeration containing the name strings for curves contained in this structure.
773     */
774    public static Enumeration getNames()
775    {
776        return names.elements();
777    }
778}
779