Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* apps/ecparam.c */ |
| 2 | /* |
| 3 | * Written by Nils Larsch for the OpenSSL project. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * 3. All advertising materials mentioning features or use of this |
| 21 | * software must display the following acknowledgment: |
| 22 | * "This product includes software developed by the OpenSSL Project |
| 23 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| 24 | * |
| 25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 | * endorse or promote products derived from this software without |
| 27 | * prior written permission. For written permission, please contact |
| 28 | * openssl-core@openssl.org. |
| 29 | * |
| 30 | * 5. Products derived from this software may not be called "OpenSSL" |
| 31 | * nor may "OpenSSL" appear in their names without prior written |
| 32 | * permission of the OpenSSL Project. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| 38 | * |
| 39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 | * ==================================================================== |
| 52 | * |
| 53 | * This product includes cryptographic software written by Eric Young |
| 54 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 | * Hudson (tjh@cryptsoft.com). |
| 56 | * |
| 57 | */ |
| 58 | /* ==================================================================== |
| 59 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
| 60 | * |
| 61 | * Portions of the attached software ("Contribution") are developed by |
| 62 | * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. |
| 63 | * |
| 64 | * The Contribution is licensed pursuant to the OpenSSL open source |
| 65 | * license provided above. |
| 66 | * |
| 67 | * The elliptic curve binary polynomial software is originally written by |
| 68 | * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. |
| 69 | * |
| 70 | */ |
| 71 | |
| 72 | #include <openssl/opensslconf.h> |
| 73 | #ifndef OPENSSL_NO_EC |
| 74 | #include <assert.h> |
| 75 | #include <stdio.h> |
| 76 | #include <stdlib.h> |
| 77 | #include <time.h> |
| 78 | #include <string.h> |
| 79 | #include "apps.h" |
| 80 | #include <openssl/bio.h> |
| 81 | #include <openssl/err.h> |
| 82 | #include <openssl/bn.h> |
| 83 | #include <openssl/ec.h> |
| 84 | #include <openssl/x509.h> |
| 85 | #include <openssl/pem.h> |
| 86 | |
| 87 | #undef PROG |
| 88 | #define PROG ecparam_main |
| 89 | |
| 90 | /* -inform arg - input format - default PEM (DER or PEM) |
| 91 | * -outform arg - output format - default PEM |
| 92 | * -in arg - input file - default stdin |
| 93 | * -out arg - output file - default stdout |
| 94 | * -noout - do not print the ec parameter |
| 95 | * -text - print the ec parameters in text form |
| 96 | * -check - validate the ec parameters |
| 97 | * -C - print a 'C' function creating the parameters |
| 98 | * -name arg - use the ec parameters with 'short name' name |
| 99 | * -list_curves - prints a list of all currently available curve 'short names' |
| 100 | * -conv_form arg - specifies the point conversion form |
| 101 | * - possible values: compressed |
| 102 | * uncompressed (default) |
| 103 | * hybrid |
| 104 | * -param_enc arg - specifies the way the ec parameters are encoded |
| 105 | * in the asn1 der encoding |
| 106 | * possible values: named_curve (default) |
| 107 | * explicit |
| 108 | * -no_seed - if 'explicit' parameters are choosen do not use the seed |
| 109 | * -genkey - generate ec key |
| 110 | * -rand file - files to use for random number input |
| 111 | * -engine e - use engine e, possibly a hardware device |
| 112 | */ |
| 113 | |
| 114 | |
| 115 | static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *); |
| 116 | |
| 117 | int MAIN(int, char **); |
| 118 | |
| 119 | int MAIN(int argc, char **argv) |
| 120 | { |
| 121 | EC_GROUP *group = NULL; |
| 122 | point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; |
| 123 | int new_form = 0; |
| 124 | int asn1_flag = OPENSSL_EC_NAMED_CURVE; |
| 125 | int new_asn1_flag = 0; |
| 126 | char *curve_name = NULL, *inrand = NULL; |
| 127 | int list_curves = 0, no_seed = 0, check = 0, |
| 128 | badops = 0, text = 0, i, need_rand = 0, genkey = 0; |
| 129 | char *infile = NULL, *outfile = NULL, *prog; |
| 130 | BIO *in = NULL, *out = NULL; |
| 131 | int informat, outformat, noout = 0, C = 0, ret = 1; |
| 132 | char *engine = NULL; |
| 133 | |
| 134 | BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, |
| 135 | *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL; |
| 136 | unsigned char *buffer = NULL; |
| 137 | |
| 138 | apps_startup(); |
| 139 | |
| 140 | if (bio_err == NULL) |
| 141 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
| 142 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
| 143 | |
| 144 | if (!load_config(bio_err, NULL)) |
| 145 | goto end; |
| 146 | |
| 147 | informat=FORMAT_PEM; |
| 148 | outformat=FORMAT_PEM; |
| 149 | |
| 150 | prog=argv[0]; |
| 151 | argc--; |
| 152 | argv++; |
| 153 | while (argc >= 1) |
| 154 | { |
| 155 | if (strcmp(*argv,"-inform") == 0) |
| 156 | { |
| 157 | if (--argc < 1) goto bad; |
| 158 | informat=str2fmt(*(++argv)); |
| 159 | } |
| 160 | else if (strcmp(*argv,"-outform") == 0) |
| 161 | { |
| 162 | if (--argc < 1) goto bad; |
| 163 | outformat=str2fmt(*(++argv)); |
| 164 | } |
| 165 | else if (strcmp(*argv,"-in") == 0) |
| 166 | { |
| 167 | if (--argc < 1) goto bad; |
| 168 | infile= *(++argv); |
| 169 | } |
| 170 | else if (strcmp(*argv,"-out") == 0) |
| 171 | { |
| 172 | if (--argc < 1) goto bad; |
| 173 | outfile= *(++argv); |
| 174 | } |
| 175 | else if (strcmp(*argv,"-text") == 0) |
| 176 | text = 1; |
| 177 | else if (strcmp(*argv,"-C") == 0) |
| 178 | C = 1; |
| 179 | else if (strcmp(*argv,"-check") == 0) |
| 180 | check = 1; |
| 181 | else if (strcmp (*argv, "-name") == 0) |
| 182 | { |
| 183 | if (--argc < 1) |
| 184 | goto bad; |
| 185 | curve_name = *(++argv); |
| 186 | } |
| 187 | else if (strcmp(*argv, "-list_curves") == 0) |
| 188 | list_curves = 1; |
| 189 | else if (strcmp(*argv, "-conv_form") == 0) |
| 190 | { |
| 191 | if (--argc < 1) |
| 192 | goto bad; |
| 193 | ++argv; |
| 194 | new_form = 1; |
| 195 | if (strcmp(*argv, "compressed") == 0) |
| 196 | form = POINT_CONVERSION_COMPRESSED; |
| 197 | else if (strcmp(*argv, "uncompressed") == 0) |
| 198 | form = POINT_CONVERSION_UNCOMPRESSED; |
| 199 | else if (strcmp(*argv, "hybrid") == 0) |
| 200 | form = POINT_CONVERSION_HYBRID; |
| 201 | else |
| 202 | goto bad; |
| 203 | } |
| 204 | else if (strcmp(*argv, "-param_enc") == 0) |
| 205 | { |
| 206 | if (--argc < 1) |
| 207 | goto bad; |
| 208 | ++argv; |
| 209 | new_asn1_flag = 1; |
| 210 | if (strcmp(*argv, "named_curve") == 0) |
| 211 | asn1_flag = OPENSSL_EC_NAMED_CURVE; |
| 212 | else if (strcmp(*argv, "explicit") == 0) |
| 213 | asn1_flag = 0; |
| 214 | else |
| 215 | goto bad; |
| 216 | } |
| 217 | else if (strcmp(*argv, "-no_seed") == 0) |
| 218 | no_seed = 1; |
| 219 | else if (strcmp(*argv, "-noout") == 0) |
| 220 | noout=1; |
| 221 | else if (strcmp(*argv,"-genkey") == 0) |
| 222 | { |
| 223 | genkey=1; |
| 224 | need_rand=1; |
| 225 | } |
| 226 | else if (strcmp(*argv, "-rand") == 0) |
| 227 | { |
| 228 | if (--argc < 1) goto bad; |
| 229 | inrand= *(++argv); |
| 230 | need_rand=1; |
| 231 | } |
| 232 | else if(strcmp(*argv, "-engine") == 0) |
| 233 | { |
| 234 | if (--argc < 1) goto bad; |
| 235 | engine = *(++argv); |
| 236 | } |
| 237 | else |
| 238 | { |
| 239 | BIO_printf(bio_err,"unknown option %s\n",*argv); |
| 240 | badops=1; |
| 241 | break; |
| 242 | } |
| 243 | argc--; |
| 244 | argv++; |
| 245 | } |
| 246 | |
| 247 | if (badops) |
| 248 | { |
| 249 | bad: |
| 250 | BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog); |
| 251 | BIO_printf(bio_err, "where options are\n"); |
| 252 | BIO_printf(bio_err, " -inform arg input format - " |
| 253 | "default PEM (DER or PEM)\n"); |
| 254 | BIO_printf(bio_err, " -outform arg output format - " |
| 255 | "default PEM\n"); |
| 256 | BIO_printf(bio_err, " -in arg input file - " |
| 257 | "default stdin\n"); |
| 258 | BIO_printf(bio_err, " -out arg output file - " |
| 259 | "default stdout\n"); |
| 260 | BIO_printf(bio_err, " -noout do not print the " |
| 261 | "ec parameter\n"); |
| 262 | BIO_printf(bio_err, " -text print the ec " |
| 263 | "parameters in text form\n"); |
| 264 | BIO_printf(bio_err, " -check validate the ec " |
| 265 | "parameters\n"); |
| 266 | BIO_printf(bio_err, " -C print a 'C' " |
| 267 | "function creating the parameters\n"); |
| 268 | BIO_printf(bio_err, " -name arg use the " |
| 269 | "ec parameters with 'short name' name\n"); |
| 270 | BIO_printf(bio_err, " -list_curves prints a list of " |
| 271 | "all currently available curve 'short names'\n"); |
| 272 | BIO_printf(bio_err, " -conv_form arg specifies the " |
| 273 | "point conversion form \n"); |
| 274 | BIO_printf(bio_err, " possible values:" |
| 275 | " compressed\n"); |
| 276 | BIO_printf(bio_err, " " |
| 277 | " uncompressed (default)\n"); |
| 278 | BIO_printf(bio_err, " " |
| 279 | " hybrid\n"); |
| 280 | BIO_printf(bio_err, " -param_enc arg specifies the way" |
| 281 | " the ec parameters are encoded\n"); |
| 282 | BIO_printf(bio_err, " in the asn1 der " |
| 283 | "encoding\n"); |
| 284 | BIO_printf(bio_err, " possible values:" |
| 285 | " named_curve (default)\n"); |
| 286 | BIO_printf(bio_err, " " |
| 287 | " explicit\n"); |
| 288 | BIO_printf(bio_err, " -no_seed if 'explicit'" |
| 289 | " parameters are choosen do not" |
| 290 | " use the seed\n"); |
| 291 | BIO_printf(bio_err, " -genkey generate ec" |
| 292 | " key\n"); |
| 293 | BIO_printf(bio_err, " -rand file files to use for" |
| 294 | " random number input\n"); |
| 295 | BIO_printf(bio_err, " -engine e use engine e, " |
| 296 | "possibly a hardware device\n"); |
| 297 | goto end; |
| 298 | } |
| 299 | |
| 300 | ERR_load_crypto_strings(); |
| 301 | |
| 302 | in=BIO_new(BIO_s_file()); |
| 303 | out=BIO_new(BIO_s_file()); |
| 304 | if ((in == NULL) || (out == NULL)) |
| 305 | { |
| 306 | ERR_print_errors(bio_err); |
| 307 | goto end; |
| 308 | } |
| 309 | |
| 310 | if (infile == NULL) |
| 311 | BIO_set_fp(in,stdin,BIO_NOCLOSE); |
| 312 | else |
| 313 | { |
| 314 | if (BIO_read_filename(in,infile) <= 0) |
| 315 | { |
| 316 | perror(infile); |
| 317 | goto end; |
| 318 | } |
| 319 | } |
| 320 | if (outfile == NULL) |
| 321 | { |
| 322 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
| 323 | #ifdef OPENSSL_SYS_VMS |
| 324 | { |
| 325 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| 326 | out = BIO_push(tmpbio, out); |
| 327 | } |
| 328 | #endif |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | if (BIO_write_filename(out,outfile) <= 0) |
| 333 | { |
| 334 | perror(outfile); |
| 335 | goto end; |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | #ifndef OPENSSL_NO_ENGINE |
| 340 | setup_engine(bio_err, engine, 0); |
| 341 | #endif |
| 342 | |
| 343 | if (list_curves) |
| 344 | { |
| 345 | EC_builtin_curve *curves = NULL; |
| 346 | size_t crv_len = 0; |
| 347 | size_t n = 0; |
| 348 | |
| 349 | crv_len = EC_get_builtin_curves(NULL, 0); |
| 350 | |
| 351 | curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len)); |
| 352 | |
| 353 | if (curves == NULL) |
| 354 | goto end; |
| 355 | |
| 356 | if (!EC_get_builtin_curves(curves, crv_len)) |
| 357 | { |
| 358 | OPENSSL_free(curves); |
| 359 | goto end; |
| 360 | } |
| 361 | |
| 362 | |
| 363 | for (n = 0; n < crv_len; n++) |
| 364 | { |
| 365 | const char *comment; |
| 366 | const char *sname; |
| 367 | comment = curves[n].comment; |
| 368 | sname = OBJ_nid2sn(curves[n].nid); |
| 369 | if (comment == NULL) |
| 370 | comment = "CURVE DESCRIPTION NOT AVAILABLE"; |
| 371 | if (sname == NULL) |
| 372 | sname = ""; |
| 373 | |
| 374 | BIO_printf(out, " %-10s: ", sname); |
| 375 | BIO_printf(out, "%s\n", comment); |
| 376 | } |
| 377 | |
| 378 | OPENSSL_free(curves); |
| 379 | ret = 0; |
| 380 | goto end; |
| 381 | } |
| 382 | |
| 383 | if (curve_name != NULL) |
| 384 | { |
| 385 | int nid; |
| 386 | |
| 387 | /* workaround for the SECG curve names secp192r1 |
| 388 | * and secp256r1 (which are the same as the curves |
| 389 | * prime192v1 and prime256v1 defined in X9.62) |
| 390 | */ |
| 391 | if (!strcmp(curve_name, "secp192r1")) |
| 392 | { |
| 393 | BIO_printf(bio_err, "using curve name prime192v1 " |
| 394 | "instead of secp192r1\n"); |
| 395 | nid = NID_X9_62_prime192v1; |
| 396 | } |
| 397 | else if (!strcmp(curve_name, "secp256r1")) |
| 398 | { |
| 399 | BIO_printf(bio_err, "using curve name prime256v1 " |
| 400 | "instead of secp256r1\n"); |
| 401 | nid = NID_X9_62_prime256v1; |
| 402 | } |
| 403 | else |
| 404 | nid = OBJ_sn2nid(curve_name); |
| 405 | |
| 406 | if (nid == 0) |
| 407 | { |
| 408 | BIO_printf(bio_err, "unknown curve name (%s)\n", |
| 409 | curve_name); |
| 410 | goto end; |
| 411 | } |
| 412 | |
| 413 | group = EC_GROUP_new_by_curve_name(nid); |
| 414 | if (group == NULL) |
| 415 | { |
| 416 | BIO_printf(bio_err, "unable to create curve (%s)\n", |
| 417 | curve_name); |
| 418 | goto end; |
| 419 | } |
| 420 | EC_GROUP_set_asn1_flag(group, asn1_flag); |
| 421 | EC_GROUP_set_point_conversion_form(group, form); |
| 422 | } |
| 423 | else if (informat == FORMAT_ASN1) |
| 424 | { |
| 425 | group = d2i_ECPKParameters_bio(in, NULL); |
| 426 | } |
| 427 | else if (informat == FORMAT_PEM) |
| 428 | { |
| 429 | group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL); |
| 430 | } |
| 431 | else |
| 432 | { |
| 433 | BIO_printf(bio_err, "bad input format specified\n"); |
| 434 | goto end; |
| 435 | } |
| 436 | |
| 437 | if (group == NULL) |
| 438 | { |
| 439 | BIO_printf(bio_err, |
| 440 | "unable to load elliptic curve parameters\n"); |
| 441 | ERR_print_errors(bio_err); |
| 442 | goto end; |
| 443 | } |
| 444 | |
| 445 | if (new_form) |
| 446 | EC_GROUP_set_point_conversion_form(group, form); |
| 447 | |
| 448 | if (new_asn1_flag) |
| 449 | EC_GROUP_set_asn1_flag(group, asn1_flag); |
| 450 | |
| 451 | if (no_seed) |
| 452 | { |
| 453 | EC_GROUP_set_seed(group, NULL, 0); |
| 454 | } |
| 455 | |
| 456 | if (text) |
| 457 | { |
| 458 | if (!ECPKParameters_print(out, group, 0)) |
| 459 | goto end; |
| 460 | } |
| 461 | |
| 462 | if (check) |
| 463 | { |
| 464 | if (group == NULL) |
| 465 | BIO_printf(bio_err, "no elliptic curve parameters\n"); |
| 466 | BIO_printf(bio_err, "checking elliptic curve parameters: "); |
| 467 | if (!EC_GROUP_check(group, NULL)) |
| 468 | { |
| 469 | BIO_printf(bio_err, "failed\n"); |
| 470 | ERR_print_errors(bio_err); |
| 471 | } |
| 472 | else |
| 473 | BIO_printf(bio_err, "ok\n"); |
| 474 | |
| 475 | } |
| 476 | |
| 477 | if (C) |
| 478 | { |
| 479 | size_t buf_len = 0, tmp_len = 0; |
| 480 | const EC_POINT *point; |
| 481 | int is_prime, len = 0; |
| 482 | const EC_METHOD *meth = EC_GROUP_method_of(group); |
| 483 | |
| 484 | if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL || |
| 485 | (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL || |
| 486 | (ec_order = BN_new()) == NULL || |
| 487 | (ec_cofactor = BN_new()) == NULL ) |
| 488 | { |
| 489 | perror("OPENSSL_malloc"); |
| 490 | goto end; |
| 491 | } |
| 492 | |
| 493 | is_prime = (EC_METHOD_get_field_type(meth) == |
| 494 | NID_X9_62_prime_field); |
| 495 | |
| 496 | if (is_prime) |
| 497 | { |
| 498 | if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, |
| 499 | ec_b, NULL)) |
| 500 | goto end; |
| 501 | } |
| 502 | else |
| 503 | { |
| 504 | /* TODO */ |
| 505 | goto end; |
| 506 | } |
| 507 | |
| 508 | if ((point = EC_GROUP_get0_generator(group)) == NULL) |
| 509 | goto end; |
| 510 | if (!EC_POINT_point2bn(group, point, |
| 511 | EC_GROUP_get_point_conversion_form(group), ec_gen, |
| 512 | NULL)) |
| 513 | goto end; |
| 514 | if (!EC_GROUP_get_order(group, ec_order, NULL)) |
| 515 | goto end; |
| 516 | if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL)) |
| 517 | goto end; |
| 518 | |
| 519 | if (!ec_p || !ec_a || !ec_b || !ec_gen || |
| 520 | !ec_order || !ec_cofactor) |
| 521 | goto end; |
| 522 | |
| 523 | len = BN_num_bits(ec_order); |
| 524 | |
| 525 | if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len) |
| 526 | buf_len = tmp_len; |
| 527 | if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len) |
| 528 | buf_len = tmp_len; |
| 529 | if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len) |
| 530 | buf_len = tmp_len; |
| 531 | if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len) |
| 532 | buf_len = tmp_len; |
| 533 | if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len) |
| 534 | buf_len = tmp_len; |
| 535 | if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len) |
| 536 | buf_len = tmp_len; |
| 537 | |
| 538 | buffer = (unsigned char *)OPENSSL_malloc(buf_len); |
| 539 | |
| 540 | if (buffer == NULL) |
| 541 | { |
| 542 | perror("OPENSSL_malloc"); |
| 543 | goto end; |
| 544 | } |
| 545 | |
| 546 | ecparam_print_var(out, ec_p, "ec_p", len, buffer); |
| 547 | ecparam_print_var(out, ec_a, "ec_a", len, buffer); |
| 548 | ecparam_print_var(out, ec_b, "ec_b", len, buffer); |
| 549 | ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); |
| 550 | ecparam_print_var(out, ec_order, "ec_order", len, buffer); |
| 551 | ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, |
| 552 | buffer); |
| 553 | |
| 554 | BIO_printf(out, "\n\n"); |
| 555 | |
| 556 | BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); |
| 557 | BIO_printf(out, "\tint ok=0;\n"); |
| 558 | BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); |
| 559 | BIO_printf(out, "\tEC_POINT *point = NULL;\n"); |
| 560 | BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " |
| 561 | "*tmp_3 = NULL;\n\n"); |
| 562 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " |
| 563 | "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" |
| 564 | "goto err;\n", len, len); |
| 565 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " |
| 566 | "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" |
| 567 | "goto err;\n", len, len); |
| 568 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " |
| 569 | "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" |
| 570 | "goto err;\n", len, len); |
| 571 | if (is_prime) |
| 572 | { |
| 573 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" |
| 574 | "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" |
| 575 | "\n\t\tgoto err;\n\n"); |
| 576 | } |
| 577 | else |
| 578 | { |
| 579 | /* TODO */ |
| 580 | goto end; |
| 581 | } |
| 582 | BIO_printf(out, "\t/* build generator */\n"); |
| 583 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " |
| 584 | "sizeof(ec_gen_%d), tmp_1)) == NULL)" |
| 585 | "\n\t\tgoto err;\n", len, len); |
| 586 | BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " |
| 587 | "NULL, NULL);\n"); |
| 588 | BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); |
| 589 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " |
| 590 | "sizeof(ec_order_%d), tmp_2)) == NULL)" |
| 591 | "\n\t\tgoto err;\n", len, len); |
| 592 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " |
| 593 | "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" |
| 594 | "\n\t\tgoto err;\n", len, len); |
| 595 | BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," |
| 596 | " tmp_2, tmp_3))\n\t\tgoto err;\n"); |
| 597 | BIO_printf(out, "\n\tok=1;\n"); |
| 598 | BIO_printf(out, "err:\n"); |
| 599 | BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); |
| 600 | BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); |
| 601 | BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); |
| 602 | BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); |
| 603 | BIO_printf(out, "\tif (!ok)\n"); |
| 604 | BIO_printf(out, "\t\t{\n"); |
| 605 | BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); |
| 606 | BIO_printf(out, "\t\tgroup = NULL;\n"); |
| 607 | BIO_printf(out, "\t\t}\n"); |
| 608 | BIO_printf(out, "\treturn(group);\n\t}\n"); |
| 609 | } |
| 610 | |
| 611 | if (!noout) |
| 612 | { |
| 613 | if (outformat == FORMAT_ASN1) |
| 614 | i = i2d_ECPKParameters_bio(out, group); |
| 615 | else if (outformat == FORMAT_PEM) |
| 616 | i = PEM_write_bio_ECPKParameters(out, group); |
| 617 | else |
| 618 | { |
| 619 | BIO_printf(bio_err,"bad output format specified for" |
| 620 | " outfile\n"); |
| 621 | goto end; |
| 622 | } |
| 623 | if (!i) |
| 624 | { |
| 625 | BIO_printf(bio_err, "unable to write elliptic " |
| 626 | "curve parameters\n"); |
| 627 | ERR_print_errors(bio_err); |
| 628 | goto end; |
| 629 | } |
| 630 | } |
| 631 | |
| 632 | if (need_rand) |
| 633 | { |
| 634 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
| 635 | if (inrand != NULL) |
| 636 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
| 637 | app_RAND_load_files(inrand)); |
| 638 | } |
| 639 | |
| 640 | if (genkey) |
| 641 | { |
| 642 | EC_KEY *eckey = EC_KEY_new(); |
| 643 | |
| 644 | if (eckey == NULL) |
| 645 | goto end; |
| 646 | |
| 647 | assert(need_rand); |
| 648 | |
| 649 | if (EC_KEY_set_group(eckey, group) == 0) |
| 650 | goto end; |
| 651 | |
| 652 | if (!EC_KEY_generate_key(eckey)) |
| 653 | { |
| 654 | EC_KEY_free(eckey); |
| 655 | goto end; |
| 656 | } |
| 657 | if (outformat == FORMAT_ASN1) |
| 658 | i = i2d_ECPrivateKey_bio(out, eckey); |
| 659 | else if (outformat == FORMAT_PEM) |
| 660 | i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, |
| 661 | NULL, 0, NULL, NULL); |
| 662 | else |
| 663 | { |
| 664 | BIO_printf(bio_err, "bad output format specified " |
| 665 | "for outfile\n"); |
| 666 | EC_KEY_free(eckey); |
| 667 | goto end; |
| 668 | } |
| 669 | EC_KEY_free(eckey); |
| 670 | } |
| 671 | |
| 672 | if (need_rand) |
| 673 | app_RAND_write_file(NULL, bio_err); |
| 674 | |
| 675 | ret=0; |
| 676 | end: |
| 677 | if (ec_p) |
| 678 | BN_free(ec_p); |
| 679 | if (ec_a) |
| 680 | BN_free(ec_a); |
| 681 | if (ec_b) |
| 682 | BN_free(ec_b); |
| 683 | if (ec_gen) |
| 684 | BN_free(ec_gen); |
| 685 | if (ec_order) |
| 686 | BN_free(ec_order); |
| 687 | if (ec_cofactor) |
| 688 | BN_free(ec_cofactor); |
| 689 | if (buffer) |
| 690 | OPENSSL_free(buffer); |
| 691 | if (in != NULL) |
| 692 | BIO_free(in); |
| 693 | if (out != NULL) |
| 694 | BIO_free_all(out); |
| 695 | if (group != NULL) |
| 696 | EC_GROUP_free(group); |
| 697 | apps_shutdown(); |
| 698 | OPENSSL_EXIT(ret); |
| 699 | } |
| 700 | |
| 701 | static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var, |
| 702 | int len, unsigned char *buffer) |
| 703 | { |
| 704 | BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); |
| 705 | if (BN_is_zero(in)) |
| 706 | BIO_printf(out, "\n\t0x00"); |
| 707 | else |
| 708 | { |
| 709 | int i, l; |
| 710 | |
| 711 | l = BN_bn2bin(in, buffer); |
| 712 | for (i=0; i<l-1; i++) |
| 713 | { |
| 714 | if ((i%12) == 0) |
| 715 | BIO_printf(out, "\n\t"); |
| 716 | BIO_printf(out, "0x%02X,", buffer[i]); |
| 717 | } |
| 718 | if ((i%12) == 0) |
| 719 | BIO_printf(out, "\n\t"); |
| 720 | BIO_printf(out, "0x%02X", buffer[i]); |
| 721 | } |
| 722 | BIO_printf(out, "\n\t};\n\n"); |
| 723 | return 1; |
| 724 | } |
| 725 | #else /* !OPENSSL_NO_EC */ |
| 726 | |
| 727 | # if PEDANTIC |
| 728 | static void *dummy=&dummy; |
| 729 | # endif |
| 730 | |
| 731 | #endif |