1 package org.bouncycastle.asn1.x9; 2 3 import org.bouncycastle.asn1.DERObjectIdentifier; 4 import org.bouncycastle.math.ec.ECCurve; 5 import org.bouncycastle.util.Strings; 6 import org.bouncycastle.util.encoders.Hex; 7 8 import java.math.BigInteger; 9 import java.util.Enumeration; 10 import java.util.Hashtable; 11 12 13 /** 14 * table of the current named curves defined in X.962 EC-DSA. 15 */ 16 public class X962NamedCurves 17 { 18 static X9ECParametersHolder prime192v1 = new X9ECParametersHolder() 19 { 20 protected X9ECParameters createParameters() 21 { 22 ECCurve cFp192v1 = new ECCurve.Fp( 23 new BigInteger("6277101735386680763835789423207666416083908700390324961279"), 24 new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), 25 new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16)); 26 27 return new X9ECParameters( 28 cFp192v1, 29 cFp192v1.decodePoint( 30 Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), 31 new BigInteger("ffffffffffffffffffffffff99def836146bc9b1b4d22831", 16), 32 BigInteger.valueOf(1), 33 Hex.decode("3045AE6FC8422f64ED579528D38120EAE12196D5")); 34 } 35 }; 36 37 static X9ECParametersHolder prime192v2 = new X9ECParametersHolder() 38 { 39 protected X9ECParameters createParameters() 40 { 41 ECCurve cFp192v2 = new ECCurve.Fp( 42 new BigInteger("6277101735386680763835789423207666416083908700390324961279"), 43 new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), 44 new BigInteger("cc22d6dfb95c6b25e49c0d6364a4e5980c393aa21668d953", 16)); 45 46 return new X9ECParameters( 47 cFp192v2, 48 cFp192v2.decodePoint( 49 Hex.decode("03eea2bae7e1497842f2de7769cfe9c989c072ad696f48034a")), 50 new BigInteger("fffffffffffffffffffffffe5fb1a724dc80418648d8dd31", 16), 51 BigInteger.valueOf(1), 52 Hex.decode("31a92ee2029fd10d901b113e990710f0d21ac6b6")); 53 } 54 }; 55 56 static X9ECParametersHolder prime192v3 = new X9ECParametersHolder() 57 { 58 protected X9ECParameters createParameters() 59 { 60 ECCurve cFp192v3 = new ECCurve.Fp( 61 new BigInteger("6277101735386680763835789423207666416083908700390324961279"), 62 new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), 63 new BigInteger("22123dc2395a05caa7423daeccc94760a7d462256bd56916", 16)); 64 65 return new X9ECParameters( 66 cFp192v3, 67 cFp192v3.decodePoint( 68 Hex.decode("027d29778100c65a1da1783716588dce2b8b4aee8e228f1896")), 69 new BigInteger("ffffffffffffffffffffffff7a62d031c83f4294f640ec13", 16), 70 BigInteger.valueOf(1), 71 Hex.decode("c469684435deb378c4b65ca9591e2a5763059a2e")); 72 } 73 }; 74 75 static X9ECParametersHolder prime239v1 = new X9ECParametersHolder() 76 { 77 protected X9ECParameters createParameters() 78 { 79 ECCurve cFp239v1 = new ECCurve.Fp( 80 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 81 new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), 82 new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); 83 84 return new X9ECParameters( 85 cFp239v1, 86 cFp239v1.decodePoint( 87 Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), 88 new BigInteger("7fffffffffffffffffffffff7fffff9e5e9a9f5d9071fbd1522688909d0b", 16), 89 BigInteger.valueOf(1), 90 Hex.decode("e43bb460f0b80cc0c0b075798e948060f8321b7d")); 91 } 92 }; 93 94 static X9ECParametersHolder prime239v2 = new X9ECParametersHolder() 95 { 96 protected X9ECParameters createParameters() 97 { 98 ECCurve cFp239v2 = new ECCurve.Fp( 99 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 100 new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), 101 new BigInteger("617fab6832576cbbfed50d99f0249c3fee58b94ba0038c7ae84c8c832f2c", 16)); 102 103 return new X9ECParameters( 104 cFp239v2, 105 cFp239v2.decodePoint( 106 Hex.decode("0238af09d98727705120c921bb5e9e26296a3cdcf2f35757a0eafd87b830e7")), 107 new BigInteger("7fffffffffffffffffffffff800000cfa7e8594377d414c03821bc582063", 16), 108 BigInteger.valueOf(1), 109 Hex.decode("e8b4011604095303ca3b8099982be09fcb9ae616")); 110 } 111 }; 112 113 static X9ECParametersHolder prime239v3 = new X9ECParametersHolder() 114 { 115 protected X9ECParameters createParameters() 116 { 117 ECCurve cFp239v3 = new ECCurve.Fp( 118 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 119 new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), 120 new BigInteger("255705fa2a306654b1f4cb03d6a750a30c250102d4988717d9ba15ab6d3e", 16)); 121 122 return new X9ECParameters( 123 cFp239v3, 124 cFp239v3.decodePoint( 125 Hex.decode("036768ae8e18bb92cfcf005c949aa2c6d94853d0e660bbf854b1c9505fe95a")), 126 new BigInteger("7fffffffffffffffffffffff7fffff975deb41b3a6057c3c432146526551", 16), 127 BigInteger.valueOf(1), 128 Hex.decode("7d7374168ffe3471b60a857686a19475d3bfa2ff")); 129 } 130 }; 131 132 static X9ECParametersHolder prime256v1 = new X9ECParametersHolder() 133 { 134 protected X9ECParameters createParameters() 135 { 136 ECCurve cFp256v1 = new ECCurve.Fp( 137 new BigInteger("115792089210356248762697446949407573530086143415290314195533631308867097853951"), 138 new BigInteger("ffffffff00000001000000000000000000000000fffffffffffffffffffffffc", 16), 139 new BigInteger("5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b", 16)); 140 141 return new X9ECParameters( 142 cFp256v1, 143 cFp256v1.decodePoint( 144 Hex.decode("036b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296")), 145 new BigInteger("ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551", 16), 146 BigInteger.valueOf(1), 147 Hex.decode("c49d360886e704936a6678e1139d26b7819f7e90")); 148 } 149 }; 150 151 /* 152 * F2m Curves 153 */ 154 static X9ECParametersHolder c2pnb163v1 = new X9ECParametersHolder() 155 { 156 protected X9ECParameters createParameters() 157 { 158 BigInteger c2m163v1n = new BigInteger("0400000000000000000001E60FC8821CC74DAEAFC1", 16); 159 BigInteger c2m163v1h = BigInteger.valueOf(2); 160 161 ECCurve c2m163v1 = new ECCurve.F2m( 162 163, 163 1, 2, 8, 164 new BigInteger("072546B5435234A422E0789675F432C89435DE5242", 16), 165 new BigInteger("00C9517D06D5240D3CFF38C74B20B6CD4D6F9DD4D9", 16), 166 c2m163v1n, c2m163v1h); 167 168 return new X9ECParameters( 169 c2m163v1, 170 c2m163v1.decodePoint( 171 Hex.decode("0307AF69989546103D79329FCC3D74880F33BBE803CB")), 172 c2m163v1n, c2m163v1h, 173 Hex.decode("D2COFB15760860DEF1EEF4D696E6768756151754")); 174 } 175 }; 176 177 static X9ECParametersHolder c2pnb163v2 = new X9ECParametersHolder() 178 { 179 protected X9ECParameters createParameters() 180 { 181 BigInteger c2m163v2n = new BigInteger("03FFFFFFFFFFFFFFFFFFFDF64DE1151ADBB78F10A7", 16); 182 BigInteger c2m163v2h = BigInteger.valueOf(2); 183 184 ECCurve c2m163v2 = new ECCurve.F2m( 185 163, 186 1, 2, 8, 187 new BigInteger("0108B39E77C4B108BED981ED0E890E117C511CF072", 16), 188 new BigInteger("0667ACEB38AF4E488C407433FFAE4F1C811638DF20", 16), 189 c2m163v2n, c2m163v2h); 190 191 return new X9ECParameters( 192 c2m163v2, 193 c2m163v2.decodePoint( 194 Hex.decode("030024266E4EB5106D0A964D92C4860E2671DB9B6CC5")), 195 c2m163v2n, c2m163v2h, 196 null); 197 } 198 }; 199 200 static X9ECParametersHolder c2pnb163v3 = new X9ECParametersHolder() 201 { 202 protected X9ECParameters createParameters() 203 { 204 BigInteger c2m163v3n = new BigInteger("03FFFFFFFFFFFFFFFFFFFE1AEE140F110AFF961309", 16); 205 BigInteger c2m163v3h = BigInteger.valueOf(2); 206 207 ECCurve c2m163v3 = new ECCurve.F2m( 208 163, 209 1, 2, 8, 210 new BigInteger("07A526C63D3E25A256A007699F5447E32AE456B50E", 16), 211 new BigInteger("03F7061798EB99E238FD6F1BF95B48FEEB4854252B", 16), 212 c2m163v3n, c2m163v3h); 213 214 return new X9ECParameters( 215 c2m163v3, 216 c2m163v3.decodePoint( 217 Hex.decode("0202F9F87B7C574D0BDECF8A22E6524775F98CDEBDCB")), 218 c2m163v3n, c2m163v3h, 219 null); 220 } 221 }; 222 223 static X9ECParametersHolder c2pnb176w1 = new X9ECParametersHolder() 224 { 225 protected X9ECParameters createParameters() 226 { 227 BigInteger c2m176w1n = new BigInteger("010092537397ECA4F6145799D62B0A19CE06FE26AD", 16); 228 BigInteger c2m176w1h = BigInteger.valueOf(0xFF6E); 229 230 ECCurve c2m176w1 = new ECCurve.F2m( 231 176, 232 1, 2, 43, 233 new BigInteger("00E4E6DB2995065C407D9D39B8D0967B96704BA8E9C90B", 16), 234 new BigInteger("005DDA470ABE6414DE8EC133AE28E9BBD7FCEC0AE0FFF2", 16), 235 c2m176w1n, c2m176w1h); 236 237 return new X9ECParameters( 238 c2m176w1, 239 c2m176w1.decodePoint( 240 Hex.decode("038D16C2866798B600F9F08BB4A8E860F3298CE04A5798")), 241 c2m176w1n, c2m176w1h, 242 null); 243 } 244 }; 245 246 static X9ECParametersHolder c2tnb191v1 = new X9ECParametersHolder() 247 { 248 protected X9ECParameters createParameters() 249 { 250 BigInteger c2m191v1n = new BigInteger("40000000000000000000000004A20E90C39067C893BBB9A5", 16); 251 BigInteger c2m191v1h = BigInteger.valueOf(2); 252 253 ECCurve c2m191v1 = new ECCurve.F2m( 254 191, 255 9, 256 new BigInteger("2866537B676752636A68F56554E12640276B649EF7526267", 16), 257 new BigInteger("2E45EF571F00786F67B0081B9495A3D95462F5DE0AA185EC", 16), 258 c2m191v1n, c2m191v1h); 259 260 return new X9ECParameters( 261 c2m191v1, 262 c2m191v1.decodePoint( 263 Hex.decode("0236B3DAF8A23206F9C4F299D7B21A9C369137F2C84AE1AA0D")), 264 c2m191v1n, c2m191v1h, 265 Hex.decode("4E13CA542744D696E67687561517552F279A8C84")); 266 } 267 }; 268 269 static X9ECParametersHolder c2tnb191v2 = new X9ECParametersHolder() 270 { 271 protected X9ECParameters createParameters() 272 { 273 BigInteger c2m191v2n = new BigInteger("20000000000000000000000050508CB89F652824E06B8173", 16); 274 BigInteger c2m191v2h = BigInteger.valueOf(4); 275 276 ECCurve c2m191v2 = new ECCurve.F2m( 277 191, 278 9, 279 new BigInteger("401028774D7777C7B7666D1366EA432071274F89FF01E718", 16), 280 new BigInteger("0620048D28BCBD03B6249C99182B7C8CD19700C362C46A01", 16), 281 c2m191v2n, c2m191v2h); 282 283 return new X9ECParameters( 284 c2m191v2, 285 c2m191v2.decodePoint( 286 Hex.decode("023809B2B7CC1B28CC5A87926AAD83FD28789E81E2C9E3BF10")), 287 c2m191v2n, c2m191v2h, 288 null); 289 } 290 }; 291 292 static X9ECParametersHolder c2tnb191v3 = new X9ECParametersHolder() 293 { 294 protected X9ECParameters createParameters() 295 { 296 BigInteger c2m191v3n = new BigInteger("155555555555555555555555610C0B196812BFB6288A3EA3", 16); 297 BigInteger c2m191v3h = BigInteger.valueOf(6); 298 299 ECCurve c2m191v3 = new ECCurve.F2m( 300 191, 301 9, 302 new BigInteger("6C01074756099122221056911C77D77E77A777E7E7E77FCB", 16), 303 new BigInteger("71FE1AF926CF847989EFEF8DB459F66394D90F32AD3F15E8", 16), 304 c2m191v3n, c2m191v3h); 305 306 return new X9ECParameters( 307 c2m191v3, 308 c2m191v3.decodePoint( 309 Hex.decode("03375D4CE24FDE434489DE8746E71786015009E66E38A926DD")), 310 c2m191v3n, c2m191v3h, 311 null); 312 } 313 }; 314 315 static X9ECParametersHolder c2pnb208w1 = new X9ECParametersHolder() 316 { 317 protected X9ECParameters createParameters() 318 { 319 BigInteger c2m208w1n = new BigInteger("0101BAF95C9723C57B6C21DA2EFF2D5ED588BDD5717E212F9D", 16); 320 BigInteger c2m208w1h = BigInteger.valueOf(0xFE48); 321 322 ECCurve c2m208w1 = new ECCurve.F2m( 323 208, 324 1, 2, 83, 325 new BigInteger("0", 16), 326 new BigInteger("00C8619ED45A62E6212E1160349E2BFA844439FAFC2A3FD1638F9E", 16), 327 c2m208w1n, c2m208w1h); 328 329 return new X9ECParameters( 330 c2m208w1, 331 c2m208w1.decodePoint( 332 Hex.decode("0289FDFBE4ABE193DF9559ECF07AC0CE78554E2784EB8C1ED1A57A")), 333 c2m208w1n, c2m208w1h, 334 null); 335 } 336 }; 337 338 static X9ECParametersHolder c2tnb239v1 = new X9ECParametersHolder() 339 { 340 protected X9ECParameters createParameters() 341 { 342 BigInteger c2m239v1n = new BigInteger("2000000000000000000000000000000F4D42FFE1492A4993F1CAD666E447", 16); 343 BigInteger c2m239v1h = BigInteger.valueOf(4); 344 345 ECCurve c2m239v1 = new ECCurve.F2m( 346 239, 347 36, 348 new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), 349 new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16), 350 c2m239v1n, c2m239v1h); 351 352 return new X9ECParameters( 353 c2m239v1, 354 c2m239v1.decodePoint( 355 Hex.decode("0257927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D")), 356 c2m239v1n, c2m239v1h, 357 null); 358 } 359 }; 360 361 static X9ECParametersHolder c2tnb239v2 = new X9ECParametersHolder() 362 { 363 protected X9ECParameters createParameters() 364 { 365 BigInteger c2m239v2n = new BigInteger("1555555555555555555555555555553C6F2885259C31E3FCDF154624522D", 16); 366 BigInteger c2m239v2h = BigInteger.valueOf(6); 367 368 ECCurve c2m239v2 = new ECCurve.F2m( 369 239, 370 36, 371 new BigInteger("4230017757A767FAE42398569B746325D45313AF0766266479B75654E65F", 16), 372 new BigInteger("5037EA654196CFF0CD82B2C14A2FCF2E3FF8775285B545722F03EACDB74B", 16), 373 c2m239v2n, c2m239v2h); 374 375 return new X9ECParameters( 376 c2m239v2, 377 c2m239v2.decodePoint( 378 Hex.decode("0228F9D04E900069C8DC47A08534FE76D2B900B7D7EF31F5709F200C4CA205")), 379 c2m239v2n, c2m239v2h, 380 null); 381 } 382 }; 383 384 static X9ECParametersHolder c2tnb239v3 = new X9ECParametersHolder() 385 { 386 protected X9ECParameters createParameters() 387 { 388 BigInteger c2m239v3n = new BigInteger("0CCCCCCCCCCCCCCCCCCCCCCCCCCCCCAC4912D2D9DF903EF9888B8A0E4CFF", 16); 389 BigInteger c2m239v3h = BigInteger.valueOf(10); 390 391 ECCurve c2m239v3 = new ECCurve.F2m( 392 239, 393 36, 394 new BigInteger("01238774666A67766D6676F778E676B66999176666E687666D8766C66A9F", 16), 395 new BigInteger("6A941977BA9F6A435199ACFC51067ED587F519C5ECB541B8E44111DE1D40", 16), 396 c2m239v3n, c2m239v3h); 397 398 return new X9ECParameters( 399 c2m239v3, 400 c2m239v3.decodePoint( 401 Hex.decode("0370F6E9D04D289C4E89913CE3530BFDE903977D42B146D539BF1BDE4E9C92")), 402 c2m239v3n, c2m239v3h, 403 null); 404 } 405 }; 406 407 static X9ECParametersHolder c2pnb272w1 = new X9ECParametersHolder() 408 { 409 protected X9ECParameters createParameters() 410 { 411 BigInteger c2m272w1n = new BigInteger("0100FAF51354E0E39E4892DF6E319C72C8161603FA45AA7B998A167B8F1E629521", 16); 412 BigInteger c2m272w1h = BigInteger.valueOf(0xFF06); 413 414 ECCurve c2m272w1 = new ECCurve.F2m( 415 272, 416 1, 3, 56, 417 new BigInteger("0091A091F03B5FBA4AB2CCF49C4EDD220FB028712D42BE752B2C40094DBACDB586FB20", 16), 418 new BigInteger("7167EFC92BB2E3CE7C8AAAFF34E12A9C557003D7C73A6FAF003F99F6CC8482E540F7", 16), 419 c2m272w1n, c2m272w1h); 420 421 return new X9ECParameters( 422 c2m272w1, 423 c2m272w1.decodePoint( 424 Hex.decode("026108BABB2CEEBCF787058A056CBE0CFE622D7723A289E08A07AE13EF0D10D171DD8D")), 425 c2m272w1n, c2m272w1h, 426 null); 427 } 428 }; 429 430 static X9ECParametersHolder c2pnb304w1 = new X9ECParametersHolder() 431 { 432 protected X9ECParameters createParameters() 433 { 434 BigInteger c2m304w1n = new BigInteger("0101D556572AABAC800101D556572AABAC8001022D5C91DD173F8FB561DA6899164443051D", 16); 435 BigInteger c2m304w1h = BigInteger.valueOf(0xFE2E); 436 437 ECCurve c2m304w1 = new ECCurve.F2m( 438 304, 439 1, 2, 11, 440 new BigInteger("00FD0D693149A118F651E6DCE6802085377E5F882D1B510B44160074C1288078365A0396C8E681", 16), 441 new BigInteger("00BDDB97E555A50A908E43B01C798EA5DAA6788F1EA2794EFCF57166B8C14039601E55827340BE", 16), 442 c2m304w1n, c2m304w1h); 443 444 return new X9ECParameters( 445 c2m304w1, 446 c2m304w1.decodePoint( 447 Hex.decode("02197B07845E9BE2D96ADB0F5F3C7F2CFFBD7A3EB8B6FEC35C7FD67F26DDF6285A644F740A2614")), 448 c2m304w1n, c2m304w1h, 449 null); 450 } 451 }; 452 453 static X9ECParametersHolder c2tnb359v1 = new X9ECParametersHolder() 454 { 455 protected X9ECParameters createParameters() 456 { 457 BigInteger c2m359v1n = new BigInteger("01AF286BCA1AF286BCA1AF286BCA1AF286BCA1AF286BC9FB8F6B85C556892C20A7EB964FE7719E74F490758D3B", 16); 458 BigInteger c2m359v1h = BigInteger.valueOf(0x4C); 459 460 ECCurve c2m359v1 = new ECCurve.F2m( 461 359, 462 68, 463 new BigInteger("5667676A654B20754F356EA92017D946567C46675556F19556A04616B567D223A5E05656FB549016A96656A557", 16), 464 new BigInteger("2472E2D0197C49363F1FE7F5B6DB075D52B6947D135D8CA445805D39BC345626089687742B6329E70680231988", 16), 465 c2m359v1n, c2m359v1h); 466 467 return new X9ECParameters( 468 c2m359v1, 469 c2m359v1.decodePoint( 470 Hex.decode("033C258EF3047767E7EDE0F1FDAA79DAEE3841366A132E163ACED4ED2401DF9C6BDCDE98E8E707C07A2239B1B097")), 471 c2m359v1n, c2m359v1h, 472 null); 473 } 474 }; 475 476 static X9ECParametersHolder c2pnb368w1 = new X9ECParametersHolder() 477 { 478 protected X9ECParameters createParameters() 479 { 480 BigInteger c2m368w1n = new BigInteger("010090512DA9AF72B08349D98A5DD4C7B0532ECA51CE03E2D10F3B7AC579BD87E909AE40A6F131E9CFCE5BD967", 16); 481 BigInteger c2m368w1h = BigInteger.valueOf(0xFF70); 482 483 ECCurve c2m368w1 = new ECCurve.F2m( 484 368, 485 1, 2, 85, 486 new BigInteger("00E0D2EE25095206F5E2A4F9ED229F1F256E79A0E2B455970D8D0D865BD94778C576D62F0AB7519CCD2A1A906AE30D", 16), 487 new BigInteger("00FC1217D4320A90452C760A58EDCD30C8DD069B3C34453837A34ED50CB54917E1C2112D84D164F444F8F74786046A", 16), 488 c2m368w1n, c2m368w1h); 489 490 return new X9ECParameters( 491 c2m368w1, 492 c2m368w1.decodePoint( 493 Hex.decode("021085E2755381DCCCE3C1557AFA10C2F0C0C2825646C5B34A394CBCFA8BC16B22E7E789E927BE216F02E1FB136A5F")), 494 c2m368w1n, c2m368w1h, 495 null); 496 } 497 }; 498 499 static X9ECParametersHolder c2tnb431r1 = new X9ECParametersHolder() 500 { 501 protected X9ECParameters createParameters() 502 { 503 BigInteger c2m431r1n = new BigInteger("0340340340340340340340340340340340340340340340340340340323C313FAB50589703B5EC68D3587FEC60D161CC149C1AD4A91", 16); 504 BigInteger c2m431r1h = BigInteger.valueOf(0x2760); 505 506 ECCurve c2m431r1 = new ECCurve.F2m( 507 431, 508 120, 509 new BigInteger("1A827EF00DD6FC0E234CAF046C6A5D8A85395B236CC4AD2CF32A0CADBDC9DDF620B0EB9906D0957F6C6FEACD615468DF104DE296CD8F", 16), 510 new BigInteger("10D9B4A3D9047D8B154359ABFB1B7F5485B04CEB868237DDC9DEDA982A679A5A919B626D4E50A8DD731B107A9962381FB5D807BF2618", 16), 511 c2m431r1n, c2m431r1h); 512 513 return new X9ECParameters( 514 c2m431r1, 515 c2m431r1.decodePoint( 516 Hex.decode("02120FC05D3C67A99DE161D2F4092622FECA701BE4F50F4758714E8A87BBF2A658EF8C21E7C5EFE965361F6C2999C0C247B0DBD70CE6B7")), 517 c2m431r1n, c2m431r1h, 518 null); 519 } 520 }; 521 522 static final Hashtable objIds = new Hashtable(); 523 static final Hashtable curves = new Hashtable(); 524 static final Hashtable names = new Hashtable(); 525 526 static void defineCurve(String name, DERObjectIdentifier oid, X9ECParametersHolder holder) 527 { 528 objIds.put(name, oid); 529 names.put(oid, name); 530 curves.put(oid, holder); 531 } 532 533 static 534 { 535 defineCurve("prime192v1", X9ObjectIdentifiers.prime192v1, prime192v1); 536 defineCurve("prime192v2", X9ObjectIdentifiers.prime192v2, prime192v2); 537 defineCurve("prime192v3", X9ObjectIdentifiers.prime192v3, prime192v3); 538 defineCurve("prime239v1", X9ObjectIdentifiers.prime239v1, prime239v1); 539 defineCurve("prime239v2", X9ObjectIdentifiers.prime239v2, prime239v2); 540 defineCurve("prime239v3", X9ObjectIdentifiers.prime239v3, prime239v3); 541 defineCurve("prime256v1", X9ObjectIdentifiers.prime256v1, prime256v1); 542 defineCurve("c2pnb163v1", X9ObjectIdentifiers.c2pnb163v1, c2pnb163v1); 543 defineCurve("c2pnb163v2", X9ObjectIdentifiers.c2pnb163v2, c2pnb163v2); 544 defineCurve("c2pnb163v3", X9ObjectIdentifiers.c2pnb163v3, c2pnb163v3); 545 defineCurve("c2pnb176w1", X9ObjectIdentifiers.c2pnb176w1, c2pnb176w1); 546 defineCurve("c2tnb191v1", X9ObjectIdentifiers.c2tnb191v1, c2tnb191v1); 547 defineCurve("c2tnb191v2", X9ObjectIdentifiers.c2tnb191v2, c2tnb191v2); 548 defineCurve("c2tnb191v3", X9ObjectIdentifiers.c2tnb191v3, c2tnb191v3); 549 defineCurve("c2pnb208w1", X9ObjectIdentifiers.c2pnb208w1, c2pnb208w1); 550 defineCurve("c2tnb239v1", X9ObjectIdentifiers.c2tnb239v1, c2tnb239v1); 551 defineCurve("c2tnb239v2", X9ObjectIdentifiers.c2tnb239v2, c2tnb239v2); 552 defineCurve("c2tnb239v3", X9ObjectIdentifiers.c2tnb239v3, c2tnb239v3); 553 defineCurve("c2pnb272w1", X9ObjectIdentifiers.c2pnb272w1, c2pnb272w1); 554 defineCurve("c2pnb304w1", X9ObjectIdentifiers.c2pnb304w1, c2pnb304w1); 555 defineCurve("c2tnb359v1", X9ObjectIdentifiers.c2tnb359v1, c2tnb359v1); 556 defineCurve("c2pnb368w1", X9ObjectIdentifiers.c2pnb368w1, c2pnb368w1); 557 defineCurve("c2tnb431r1", X9ObjectIdentifiers.c2tnb431r1, c2tnb431r1); 558 } 559 560 public static X9ECParameters getByName( 561 String name) 562 { 563 DERObjectIdentifier oid = (DERObjectIdentifier)objIds.get(Strings.toLowerCase(name)); 564 565 if (oid != null) 566 { 567 return getByOID(oid); 568 } 569 570 return null; 571 } 572 573 /** 574 * return the X9ECParameters object for the named curve represented by 575 * the passed in object identifier. Null if the curve isn't present. 576 * 577 * @param oid an object identifier representing a named curve, if present. 578 */ 579 public static X9ECParameters getByOID( 580 DERObjectIdentifier oid) 581 { 582 X9ECParametersHolder holder = (X9ECParametersHolder)curves.get(oid); 583 584 if (holder != null) 585 { 586 return holder.getParameters(); 587 } 588 589 return null; 590 } 591 592 /** 593 * return the object identifier signified by the passed in name. Null 594 * if there is no object identifier associated with name. 595 * 596 * @return the object identifier associated with name, if present. 597 */ 598 public static DERObjectIdentifier getOID( 599 String name) 600 { 601 return (DERObjectIdentifier)objIds.get(Strings.toLowerCase(name)); 602 } 603 604 /** 605 * return the named curve name represented by the given object identifier. 606 */ 607 public static String getName( 608 DERObjectIdentifier oid) 609 { 610 return (String)names.get(oid); 611 } 612 613 /** 614 * returns an enumeration containing the name strings for curves 615 * contained in this structure. 616 */ 617 public static Enumeration getNames() 618 { 619 return objIds.keys(); 620 } 621 } 622
