1 package org.bouncycastle.asn1.x9; 2 3 import java.math.BigInteger; 4 import java.util.Enumeration; 5 import java.util.Hashtable; 6 7 import org.bouncycastle.asn1.ASN1ObjectIdentifier; 8 import org.bouncycastle.math.ec.ECCurve; 9 import org.bouncycastle.math.ec.WNafUtil; 10 import org.bouncycastle.util.Strings; 11 import org.bouncycastle.util.encoders.Hex; 12 13 14 /** 15 * Table of the current named curves defined in X.962 EC-DSA. 16 */ 17 public class X962NamedCurves 18 { configureBasepoint(ECCurve curve, String encoding)19 private static X9ECPoint configureBasepoint(ECCurve curve, String encoding) 20 { 21 X9ECPoint G = new X9ECPoint(curve, Hex.decodeStrict(encoding)); 22 WNafUtil.configureBasepoint(G.getPoint()); 23 return G; 24 } 25 configureCurve(ECCurve curve)26 private static ECCurve configureCurve(ECCurve curve) 27 { 28 return curve; 29 } 30 fromHex(String hex)31 private static BigInteger fromHex(String hex) 32 { 33 return new BigInteger(1, Hex.decodeStrict(hex)); 34 } 35 36 static X9ECParametersHolder prime192v1 = new X9ECParametersHolder() 37 { 38 protected X9ECParameters createParameters() 39 { 40 BigInteger n = fromHex("ffffffffffffffffffffffff99def836146bc9b1b4d22831"); 41 BigInteger h = BigInteger.valueOf(1); 42 43 ECCurve curve = configureCurve(new ECCurve.Fp( 44 fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF"), 45 fromHex("fffffffffffffffffffffffffffffffefffffffffffffffc"), 46 fromHex("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1"), 47 n, h)); 48 49 X9ECPoint G = configureBasepoint(curve, 50 "03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012"); 51 52 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("3045AE6FC8422f64ED579528D38120EAE12196D5")); 53 } 54 }; 55 56 static X9ECParametersHolder prime192v2 = new X9ECParametersHolder() 57 { 58 protected X9ECParameters createParameters() 59 { 60 BigInteger n = fromHex("fffffffffffffffffffffffe5fb1a724dc80418648d8dd31"); 61 BigInteger h = BigInteger.valueOf(1); 62 63 ECCurve curve = configureCurve(new ECCurve.Fp( 64 fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF"), 65 fromHex("fffffffffffffffffffffffffffffffefffffffffffffffc"), 66 fromHex("cc22d6dfb95c6b25e49c0d6364a4e5980c393aa21668d953"), 67 n, h)); 68 69 X9ECPoint G = configureBasepoint(curve, 70 "03eea2bae7e1497842f2de7769cfe9c989c072ad696f48034a"); 71 72 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("31a92ee2029fd10d901b113e990710f0d21ac6b6")); 73 } 74 }; 75 76 static X9ECParametersHolder prime192v3 = new X9ECParametersHolder() 77 { 78 protected X9ECParameters createParameters() 79 { 80 BigInteger n = fromHex("ffffffffffffffffffffffff7a62d031c83f4294f640ec13"); 81 BigInteger h = BigInteger.valueOf(1); 82 83 ECCurve curve = configureCurve(new ECCurve.Fp( 84 fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF"), 85 fromHex("fffffffffffffffffffffffffffffffefffffffffffffffc"), 86 fromHex("22123dc2395a05caa7423daeccc94760a7d462256bd56916"), 87 n, h)); 88 89 X9ECPoint G = configureBasepoint(curve, 90 "027d29778100c65a1da1783716588dce2b8b4aee8e228f1896"); 91 92 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("c469684435deb378c4b65ca9591e2a5763059a2e")); 93 } 94 }; 95 96 static X9ECParametersHolder prime239v1 = new X9ECParametersHolder() 97 { 98 protected X9ECParameters createParameters() 99 { 100 BigInteger n = fromHex("7fffffffffffffffffffffff7fffff9e5e9a9f5d9071fbd1522688909d0b"); 101 BigInteger h = BigInteger.valueOf(1); 102 103 ECCurve curve = configureCurve(new ECCurve.Fp( 104 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 105 fromHex("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc"), 106 fromHex("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a"), 107 n, h)); 108 109 X9ECPoint G = configureBasepoint(curve, 110 "020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf"); 111 112 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("e43bb460f0b80cc0c0b075798e948060f8321b7d")); 113 } 114 }; 115 116 static X9ECParametersHolder prime239v2 = new X9ECParametersHolder() 117 { 118 protected X9ECParameters createParameters() 119 { 120 BigInteger n = fromHex("7fffffffffffffffffffffff800000cfa7e8594377d414c03821bc582063"); 121 BigInteger h = BigInteger.valueOf(1); 122 123 ECCurve curve = configureCurve(new ECCurve.Fp( 124 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 125 fromHex("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc"), 126 fromHex("617fab6832576cbbfed50d99f0249c3fee58b94ba0038c7ae84c8c832f2c"), 127 n, h)); 128 129 X9ECPoint G = configureBasepoint(curve, 130 "0238af09d98727705120c921bb5e9e26296a3cdcf2f35757a0eafd87b830e7"); 131 132 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("e8b4011604095303ca3b8099982be09fcb9ae616")); 133 } 134 }; 135 136 static X9ECParametersHolder prime239v3 = new X9ECParametersHolder() 137 { 138 protected X9ECParameters createParameters() 139 { 140 BigInteger n = fromHex("7fffffffffffffffffffffff7fffff975deb41b3a6057c3c432146526551"); 141 BigInteger h = BigInteger.valueOf(1); 142 143 ECCurve curve = configureCurve(new ECCurve.Fp( 144 new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), 145 fromHex("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc"), 146 fromHex("255705fa2a306654b1f4cb03d6a750a30c250102d4988717d9ba15ab6d3e"), 147 n, h)); 148 149 X9ECPoint G = configureBasepoint(curve, 150 "036768ae8e18bb92cfcf005c949aa2c6d94853d0e660bbf854b1c9505fe95a"); 151 152 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("7d7374168ffe3471b60a857686a19475d3bfa2ff")); 153 } 154 }; 155 156 static X9ECParametersHolder prime256v1 = new X9ECParametersHolder() 157 { 158 protected X9ECParameters createParameters() 159 { 160 BigInteger n = fromHex("ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551"); 161 BigInteger h = BigInteger.valueOf(1); 162 163 ECCurve curve = configureCurve(new ECCurve.Fp( 164 new BigInteger("115792089210356248762697446949407573530086143415290314195533631308867097853951"), 165 fromHex("ffffffff00000001000000000000000000000000fffffffffffffffffffffffc"), 166 fromHex("5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b"), 167 n, h)); 168 169 X9ECPoint G = configureBasepoint(curve, 170 "036b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296"); 171 172 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("c49d360886e704936a6678e1139d26b7819f7e90")); 173 } 174 }; 175 176 /* 177 * F2m Curves 178 */ 179 static X9ECParametersHolder c2pnb163v1 = new X9ECParametersHolder() 180 { 181 protected X9ECParameters createParameters() 182 { 183 BigInteger n = fromHex("0400000000000000000001E60FC8821CC74DAEAFC1"); 184 BigInteger h = BigInteger.valueOf(2); 185 186 ECCurve curve = configureCurve(new ECCurve.F2m( 187 163, 188 1, 2, 8, 189 fromHex("072546B5435234A422E0789675F432C89435DE5242"), 190 fromHex("00C9517D06D5240D3CFF38C74B20B6CD4D6F9DD4D9"), 191 n, h)); 192 193 X9ECPoint G = configureBasepoint(curve, 194 "0307AF69989546103D79329FCC3D74880F33BBE803CB"); 195 196 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("D2C0FB15760860DEF1EEF4D696E6768756151754")); 197 } 198 }; 199 200 static X9ECParametersHolder c2pnb163v2 = new X9ECParametersHolder() 201 { 202 protected X9ECParameters createParameters() 203 { 204 BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFDF64DE1151ADBB78F10A7"); 205 BigInteger h = BigInteger.valueOf(2); 206 207 ECCurve curve = configureCurve(new ECCurve.F2m( 208 163, 209 1, 2, 8, 210 fromHex("0108B39E77C4B108BED981ED0E890E117C511CF072"), 211 fromHex("0667ACEB38AF4E488C407433FFAE4F1C811638DF20"), 212 n, h)); 213 214 X9ECPoint G = configureBasepoint(curve, 215 "030024266E4EB5106D0A964D92C4860E2671DB9B6CC5"); 216 217 return new X9ECParameters(curve, G, n, h); 218 } 219 }; 220 221 static X9ECParametersHolder c2pnb163v3 = new X9ECParametersHolder() 222 { 223 protected X9ECParameters createParameters() 224 { 225 BigInteger n = fromHex("03FFFFFFFFFFFFFFFFFFFE1AEE140F110AFF961309"); 226 BigInteger h = BigInteger.valueOf(2); 227 228 ECCurve curve = configureCurve(new ECCurve.F2m( 229 163, 230 1, 2, 8, 231 fromHex("07A526C63D3E25A256A007699F5447E32AE456B50E"), 232 fromHex("03F7061798EB99E238FD6F1BF95B48FEEB4854252B"), 233 n, h)); 234 235 X9ECPoint G = configureBasepoint(curve, 236 "0202F9F87B7C574D0BDECF8A22E6524775F98CDEBDCB"); 237 238 return new X9ECParameters(curve, G, n, h); 239 } 240 }; 241 242 static X9ECParametersHolder c2pnb176w1 = new X9ECParametersHolder() 243 { 244 protected X9ECParameters createParameters() 245 { 246 BigInteger n = fromHex("010092537397ECA4F6145799D62B0A19CE06FE26AD"); 247 BigInteger h = BigInteger.valueOf(0xFF6E); 248 249 ECCurve curve = configureCurve(new ECCurve.F2m( 250 176, 251 1, 2, 43, 252 fromHex("E4E6DB2995065C407D9D39B8D0967B96704BA8E9C90B"), 253 fromHex("5DDA470ABE6414DE8EC133AE28E9BBD7FCEC0AE0FFF2"), 254 n, h)); 255 256 X9ECPoint G = configureBasepoint(curve, 257 "038D16C2866798B600F9F08BB4A8E860F3298CE04A5798"); 258 259 return new X9ECParameters(curve, G, n, h); 260 } 261 }; 262 263 static X9ECParametersHolder c2tnb191v1 = new X9ECParametersHolder() 264 { 265 protected X9ECParameters createParameters() 266 { 267 BigInteger n = fromHex("40000000000000000000000004A20E90C39067C893BBB9A5"); 268 BigInteger h = BigInteger.valueOf(2); 269 270 ECCurve curve = configureCurve(new ECCurve.F2m( 271 191, 272 9, 273 fromHex("2866537B676752636A68F56554E12640276B649EF7526267"), 274 fromHex("2E45EF571F00786F67B0081B9495A3D95462F5DE0AA185EC"), 275 n, h)); 276 277 X9ECPoint G = configureBasepoint(curve, 278 "0236B3DAF8A23206F9C4F299D7B21A9C369137F2C84AE1AA0D"); 279 280 return new X9ECParameters(curve, G, n, h, Hex.decodeStrict("4E13CA542744D696E67687561517552F279A8C84")); 281 } 282 }; 283 284 static X9ECParametersHolder c2tnb191v2 = new X9ECParametersHolder() 285 { 286 protected X9ECParameters createParameters() 287 { 288 BigInteger n = fromHex("20000000000000000000000050508CB89F652824E06B8173"); 289 BigInteger h = BigInteger.valueOf(4); 290 291 ECCurve curve = configureCurve(new ECCurve.F2m( 292 191, 293 9, 294 fromHex("401028774D7777C7B7666D1366EA432071274F89FF01E718"), 295 fromHex("0620048D28BCBD03B6249C99182B7C8CD19700C362C46A01"), 296 n, h)); 297 298 X9ECPoint G = configureBasepoint(curve, 299 "023809B2B7CC1B28CC5A87926AAD83FD28789E81E2C9E3BF10"); 300 301 return new X9ECParameters(curve, G, n, h); 302 } 303 }; 304 305 static X9ECParametersHolder c2tnb191v3 = new X9ECParametersHolder() 306 { 307 protected X9ECParameters createParameters() 308 { 309 BigInteger n = fromHex("155555555555555555555555610C0B196812BFB6288A3EA3"); 310 BigInteger h = BigInteger.valueOf(6); 311 312 ECCurve curve = configureCurve(new ECCurve.F2m( 313 191, 314 9, 315 fromHex("6C01074756099122221056911C77D77E77A777E7E7E77FCB"), 316 fromHex("71FE1AF926CF847989EFEF8DB459F66394D90F32AD3F15E8"), 317 n, h)); 318 319 X9ECPoint G = configureBasepoint(curve, 320 "03375D4CE24FDE434489DE8746E71786015009E66E38A926DD"); 321 322 return new X9ECParameters(curve, G, n, h); 323 } 324 }; 325 326 static X9ECParametersHolder c2pnb208w1 = new X9ECParametersHolder() 327 { 328 protected X9ECParameters createParameters() 329 { 330 BigInteger n = fromHex("0101BAF95C9723C57B6C21DA2EFF2D5ED588BDD5717E212F9D"); 331 BigInteger h = BigInteger.valueOf(0xFE48); 332 333 ECCurve curve = configureCurve(new ECCurve.F2m( 334 208, 335 1, 2, 83, 336 BigInteger.valueOf(0), 337 fromHex("C8619ED45A62E6212E1160349E2BFA844439FAFC2A3FD1638F9E"), 338 n, h)); 339 340 X9ECPoint G = configureBasepoint(curve, 341 "0289FDFBE4ABE193DF9559ECF07AC0CE78554E2784EB8C1ED1A57A"); 342 343 return new X9ECParameters(curve, G, n, h); 344 } 345 }; 346 347 static X9ECParametersHolder c2tnb239v1 = new X9ECParametersHolder() 348 { 349 protected X9ECParameters createParameters() 350 { 351 BigInteger n = fromHex("2000000000000000000000000000000F4D42FFE1492A4993F1CAD666E447"); 352 BigInteger h = BigInteger.valueOf(4); 353 354 ECCurve curve = configureCurve(new ECCurve.F2m( 355 239, 356 36, 357 fromHex("32010857077C5431123A46B808906756F543423E8D27877578125778AC76"), 358 fromHex("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16"), 359 n, h)); 360 361 X9ECPoint G = configureBasepoint(curve, 362 "0257927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D"); 363 364 return new X9ECParameters(curve, G, n, h); 365 } 366 }; 367 368 static X9ECParametersHolder c2tnb239v2 = new X9ECParametersHolder() 369 { 370 protected X9ECParameters createParameters() 371 { 372 BigInteger n = fromHex("1555555555555555555555555555553C6F2885259C31E3FCDF154624522D"); 373 BigInteger h = BigInteger.valueOf(6); 374 375 ECCurve curve = configureCurve(new ECCurve.F2m( 376 239, 377 36, 378 fromHex("4230017757A767FAE42398569B746325D45313AF0766266479B75654E65F"), 379 fromHex("5037EA654196CFF0CD82B2C14A2FCF2E3FF8775285B545722F03EACDB74B"), 380 n, h)); 381 382 X9ECPoint G = configureBasepoint(curve, 383 "0228F9D04E900069C8DC47A08534FE76D2B900B7D7EF31F5709F200C4CA205"); 384 385 return new X9ECParameters(curve, G, n, h); 386 } 387 }; 388 389 static X9ECParametersHolder c2tnb239v3 = new X9ECParametersHolder() 390 { 391 protected X9ECParameters createParameters() 392 { 393 BigInteger n = fromHex("0CCCCCCCCCCCCCCCCCCCCCCCCCCCCCAC4912D2D9DF903EF9888B8A0E4CFF"); 394 BigInteger h = BigInteger.valueOf(10); 395 396 ECCurve curve = configureCurve(new ECCurve.F2m( 397 239, 398 36, 399 fromHex("01238774666A67766D6676F778E676B66999176666E687666D8766C66A9F"), 400 fromHex("6A941977BA9F6A435199ACFC51067ED587F519C5ECB541B8E44111DE1D40"), 401 n, h)); 402 403 X9ECPoint G = configureBasepoint(curve, 404 "0370F6E9D04D289C4E89913CE3530BFDE903977D42B146D539BF1BDE4E9C92"); 405 406 return new X9ECParameters(curve, G, n, h); 407 } 408 }; 409 410 static X9ECParametersHolder c2pnb272w1 = new X9ECParametersHolder() 411 { 412 protected X9ECParameters createParameters() 413 { 414 BigInteger n = fromHex("0100FAF51354E0E39E4892DF6E319C72C8161603FA45AA7B998A167B8F1E629521"); 415 BigInteger h = BigInteger.valueOf(0xFF06); 416 417 ECCurve curve = configureCurve(new ECCurve.F2m( 418 272, 419 1, 3, 56, 420 fromHex("91A091F03B5FBA4AB2CCF49C4EDD220FB028712D42BE752B2C40094DBACDB586FB20"), 421 fromHex("7167EFC92BB2E3CE7C8AAAFF34E12A9C557003D7C73A6FAF003F99F6CC8482E540F7"), 422 n, h)); 423 424 X9ECPoint G = configureBasepoint(curve, 425 "026108BABB2CEEBCF787058A056CBE0CFE622D7723A289E08A07AE13EF0D10D171DD8D"); 426 427 return new X9ECParameters(curve, G, n, h); 428 } 429 }; 430 431 static X9ECParametersHolder c2pnb304w1 = new X9ECParametersHolder() 432 { 433 protected X9ECParameters createParameters() 434 { 435 BigInteger n = fromHex("0101D556572AABAC800101D556572AABAC8001022D5C91DD173F8FB561DA6899164443051D"); 436 BigInteger h = BigInteger.valueOf(0xFE2E); 437 438 ECCurve curve = configureCurve(new ECCurve.F2m( 439 304, 440 1, 2, 11, 441 fromHex("FD0D693149A118F651E6DCE6802085377E5F882D1B510B44160074C1288078365A0396C8E681"), 442 fromHex("BDDB97E555A50A908E43B01C798EA5DAA6788F1EA2794EFCF57166B8C14039601E55827340BE"), 443 n, h)); 444 445 X9ECPoint G = configureBasepoint(curve, 446 "02197B07845E9BE2D96ADB0F5F3C7F2CFFBD7A3EB8B6FEC35C7FD67F26DDF6285A644F740A2614"); 447 448 return new X9ECParameters(curve, G, n, h); 449 } 450 }; 451 452 static X9ECParametersHolder c2tnb359v1 = new X9ECParametersHolder() 453 { 454 protected X9ECParameters createParameters() 455 { 456 BigInteger n = fromHex("01AF286BCA1AF286BCA1AF286BCA1AF286BCA1AF286BC9FB8F6B85C556892C20A7EB964FE7719E74F490758D3B"); 457 BigInteger h = BigInteger.valueOf(0x4C); 458 459 ECCurve curve = configureCurve(new ECCurve.F2m( 460 359, 461 68, 462 fromHex("5667676A654B20754F356EA92017D946567C46675556F19556A04616B567D223A5E05656FB549016A96656A557"), 463 fromHex("2472E2D0197C49363F1FE7F5B6DB075D52B6947D135D8CA445805D39BC345626089687742B6329E70680231988"), 464 n, h)); 465 466 X9ECPoint G = configureBasepoint(curve, 467 "033C258EF3047767E7EDE0F1FDAA79DAEE3841366A132E163ACED4ED2401DF9C6BDCDE98E8E707C07A2239B1B097"); 468 469 return new X9ECParameters(curve, G, n, h); 470 } 471 }; 472 473 static X9ECParametersHolder c2pnb368w1 = new X9ECParametersHolder() 474 { 475 protected X9ECParameters createParameters() 476 { 477 BigInteger n = fromHex("010090512DA9AF72B08349D98A5DD4C7B0532ECA51CE03E2D10F3B7AC579BD87E909AE40A6F131E9CFCE5BD967"); 478 BigInteger h = BigInteger.valueOf(0xFF70); 479 480 ECCurve curve = configureCurve(new ECCurve.F2m( 481 368, 482 1, 2, 85, 483 fromHex("E0D2EE25095206F5E2A4F9ED229F1F256E79A0E2B455970D8D0D865BD94778C576D62F0AB7519CCD2A1A906AE30D"), 484 fromHex("FC1217D4320A90452C760A58EDCD30C8DD069B3C34453837A34ED50CB54917E1C2112D84D164F444F8F74786046A"), 485 n, h)); 486 487 X9ECPoint G = configureBasepoint(curve, 488 "021085E2755381DCCCE3C1557AFA10C2F0C0C2825646C5B34A394CBCFA8BC16B22E7E789E927BE216F02E1FB136A5F"); 489 490 return new X9ECParameters(curve, G, n, h); 491 } 492 }; 493 494 static X9ECParametersHolder c2tnb431r1 = new X9ECParametersHolder() 495 { 496 protected X9ECParameters createParameters() 497 { 498 BigInteger n = fromHex("0340340340340340340340340340340340340340340340340340340323C313FAB50589703B5EC68D3587FEC60D161CC149C1AD4A91"); 499 BigInteger h = BigInteger.valueOf(0x2760); 500 501 ECCurve curve = configureCurve(new ECCurve.F2m( 502 431, 503 120, 504 fromHex("1A827EF00DD6FC0E234CAF046C6A5D8A85395B236CC4AD2CF32A0CADBDC9DDF620B0EB9906D0957F6C6FEACD615468DF104DE296CD8F"), 505 fromHex("10D9B4A3D9047D8B154359ABFB1B7F5485B04CEB868237DDC9DEDA982A679A5A919B626D4E50A8DD731B107A9962381FB5D807BF2618"), 506 n, h)); 507 508 X9ECPoint G = configureBasepoint(curve, 509 "02120FC05D3C67A99DE161D2F4092622FECA701BE4F50F4758714E8A87BBF2A658EF8C21E7C5EFE965361F6C2999C0C247B0DBD70CE6B7"); 510 511 return new X9ECParameters(curve, G, n, h); 512 } 513 }; 514 515 516 static final Hashtable objIds = new Hashtable(); 517 static final Hashtable curves = new Hashtable(); 518 static final Hashtable names = new Hashtable(); 519 defineCurve(String name, ASN1ObjectIdentifier oid, X9ECParametersHolder holder)520 static void defineCurve(String name, ASN1ObjectIdentifier oid, X9ECParametersHolder holder) 521 { 522 objIds.put(name, oid); 523 names.put(oid, name); 524 curves.put(oid, holder); 525 } 526 527 static 528 { 529 defineCurve("prime192v1", X9ObjectIdentifiers.prime192v1, prime192v1); 530 defineCurve("prime192v2", X9ObjectIdentifiers.prime192v2, prime192v2); 531 defineCurve("prime192v3", X9ObjectIdentifiers.prime192v3, prime192v3); 532 defineCurve("prime239v1", X9ObjectIdentifiers.prime239v1, prime239v1); 533 defineCurve("prime239v2", X9ObjectIdentifiers.prime239v2, prime239v2); 534 defineCurve("prime239v3", X9ObjectIdentifiers.prime239v3, prime239v3); 535 defineCurve("prime256v1", X9ObjectIdentifiers.prime256v1, prime256v1); 536 defineCurve("c2pnb163v1", X9ObjectIdentifiers.c2pnb163v1, c2pnb163v1); 537 defineCurve("c2pnb163v2", X9ObjectIdentifiers.c2pnb163v2, c2pnb163v2); 538 defineCurve("c2pnb163v3", X9ObjectIdentifiers.c2pnb163v3, c2pnb163v3); 539 defineCurve("c2pnb176w1", X9ObjectIdentifiers.c2pnb176w1, c2pnb176w1); 540 defineCurve("c2tnb191v1", X9ObjectIdentifiers.c2tnb191v1, c2tnb191v1); 541 defineCurve("c2tnb191v2", X9ObjectIdentifiers.c2tnb191v2, c2tnb191v2); 542 defineCurve("c2tnb191v3", X9ObjectIdentifiers.c2tnb191v3, c2tnb191v3); 543 defineCurve("c2pnb208w1", X9ObjectIdentifiers.c2pnb208w1, c2pnb208w1); 544 defineCurve("c2tnb239v1", X9ObjectIdentifiers.c2tnb239v1, c2tnb239v1); 545 defineCurve("c2tnb239v2", X9ObjectIdentifiers.c2tnb239v2, c2tnb239v2); 546 defineCurve("c2tnb239v3", X9ObjectIdentifiers.c2tnb239v3, c2tnb239v3); 547 defineCurve("c2pnb272w1", X9ObjectIdentifiers.c2pnb272w1, c2pnb272w1); 548 defineCurve("c2pnb304w1", X9ObjectIdentifiers.c2pnb304w1, c2pnb304w1); 549 defineCurve("c2tnb359v1", X9ObjectIdentifiers.c2tnb359v1, c2tnb359v1); 550 defineCurve("c2pnb368w1", X9ObjectIdentifiers.c2pnb368w1, c2pnb368w1); 551 defineCurve("c2tnb431r1", X9ObjectIdentifiers.c2tnb431r1, c2tnb431r1); 552 } 553 getByName( String name)554 public static X9ECParameters getByName( 555 String name) 556 { 557 ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)objIds.get(Strings.toLowerCase(name)); 558 559 if (oid != null) 560 { 561 return getByOID(oid); 562 } 563 564 return null; 565 } 566 567 /** 568 * return the X9ECParameters object for the named curve represented by 569 * the passed in object identifier. Null if the curve isn't present. 570 * 571 * @param oid an object identifier representing a named curve, if present. 572 */ getByOID( ASN1ObjectIdentifier oid)573 public static X9ECParameters getByOID( 574 ASN1ObjectIdentifier oid) 575 { 576 X9ECParametersHolder holder = (X9ECParametersHolder)curves.get(oid); 577 578 if (holder != null) 579 { 580 return holder.getParameters(); 581 } 582 583 return null; 584 } 585 586 /** 587 * return the object identifier signified by the passed in name. Null 588 * if there is no object identifier associated with name. 589 * 590 * @return the object identifier associated with name, if present. 591 */ getOID( String name)592 public static ASN1ObjectIdentifier getOID( 593 String name) 594 { 595 return (ASN1ObjectIdentifier)objIds.get(Strings.toLowerCase(name)); 596 } 597 598 /** 599 * return the named curve name represented by the given object identifier. 600 */ getName( ASN1ObjectIdentifier oid)601 public static String getName( 602 ASN1ObjectIdentifier oid) 603 { 604 return (String)names.get(oid); 605 } 606 607 /** 608 * returns an enumeration containing the name strings for curves 609 * contained in this structure. 610 */ getNames()611 public static Enumeration getNames() 612 { 613 return objIds.keys(); 614 } 615 } 616