| File: | src/usr.bin/openssl/ecparam.c |
| Warning: | line 552, column 4 Value stored to 'i' is never read |
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| 1 | /* $OpenBSD: ecparam.c,v 1.23 2023/03/06 14:32:06 tb Exp $ */ |
| 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 | |
| 74 | #ifndef OPENSSL_NO_EC |
| 75 | |
| 76 | #include <stdio.h> |
| 77 | #include <stdlib.h> |
| 78 | #include <string.h> |
| 79 | #include <time.h> |
| 80 | |
| 81 | #include "apps.h" |
| 82 | |
| 83 | #include <openssl/bio.h> |
| 84 | #include <openssl/bn.h> |
| 85 | #include <openssl/ec.h> |
| 86 | #include <openssl/err.h> |
| 87 | #include <openssl/pem.h> |
| 88 | #include <openssl/x509.h> |
| 89 | |
| 90 | static int ecparam_print_var(BIO *, BIGNUM *, const char *, int, |
| 91 | unsigned char *); |
| 92 | |
| 93 | static struct { |
| 94 | int C; |
| 95 | int asn1_flag; |
| 96 | int check; |
| 97 | char *curve_name; |
| 98 | point_conversion_form_t form; |
| 99 | int genkey; |
| 100 | char *infile; |
| 101 | int informat; |
| 102 | int list_curves; |
| 103 | int new_asn1_flag; |
| 104 | int new_form; |
| 105 | int no_seed; |
| 106 | int noout; |
| 107 | char *outfile; |
| 108 | int outformat; |
| 109 | int text; |
| 110 | } cfg; |
| 111 | |
| 112 | static int |
| 113 | ecparam_opt_form(char *arg) |
| 114 | { |
| 115 | if (strcmp(arg, "compressed") == 0) |
| 116 | cfg.form = POINT_CONVERSION_COMPRESSED; |
| 117 | else if (strcmp(arg, "uncompressed") == 0) |
| 118 | cfg.form = POINT_CONVERSION_UNCOMPRESSED; |
| 119 | else if (strcmp(arg, "hybrid") == 0) |
| 120 | cfg.form = POINT_CONVERSION_HYBRID; |
| 121 | else |
| 122 | return (1); |
| 123 | |
| 124 | cfg.new_form = 1; |
| 125 | return (0); |
| 126 | } |
| 127 | |
| 128 | static int |
| 129 | ecparam_opt_enctype(char *arg) |
| 130 | { |
| 131 | if (strcmp(arg, "explicit") == 0) |
| 132 | cfg.asn1_flag = 0; |
| 133 | else if (strcmp(arg, "named_curve") == 0) |
| 134 | cfg.asn1_flag = OPENSSL_EC_NAMED_CURVE0x001; |
| 135 | else |
| 136 | return (1); |
| 137 | |
| 138 | cfg.new_asn1_flag = 1; |
| 139 | return (0); |
| 140 | } |
| 141 | |
| 142 | static const struct option ecparam_options[] = { |
| 143 | { |
| 144 | .name = "C", |
| 145 | .desc = "Convert the EC parameters into C code", |
| 146 | .type = OPTION_FLAG, |
| 147 | .opt.flag = &cfg.C, |
| 148 | }, |
| 149 | { |
| 150 | .name = "check", |
| 151 | .desc = "Validate the elliptic curve parameters", |
| 152 | .type = OPTION_FLAG, |
| 153 | .opt.flag = &cfg.check, |
| 154 | }, |
| 155 | { |
| 156 | .name = "conv_form", |
| 157 | .argname = "form", |
| 158 | .desc = "Specify point conversion form:\n" |
| 159 | " compressed, uncompressed (default), hybrid", |
| 160 | .type = OPTION_ARG_FUNC, |
| 161 | .opt.argfunc = ecparam_opt_form, |
| 162 | }, |
| 163 | { |
| 164 | .name = "genkey", |
| 165 | .desc = "Generate an EC private key using the specified " |
| 166 | "parameters", |
| 167 | .type = OPTION_FLAG, |
| 168 | .opt.flag = &cfg.genkey, |
| 169 | }, |
| 170 | { |
| 171 | .name = "in", |
| 172 | .argname = "file", |
| 173 | .desc = "Input file to read parameters from (default stdin)", |
| 174 | .type = OPTION_ARG, |
| 175 | .opt.arg = &cfg.infile, |
| 176 | }, |
| 177 | { |
| 178 | .name = "inform", |
| 179 | .argname = "format", |
| 180 | .desc = "Input format (DER or PEM)", |
| 181 | .type = OPTION_ARG_FORMAT, |
| 182 | .opt.value = &cfg.informat, |
| 183 | }, |
| 184 | { |
| 185 | .name = "list_curves", |
| 186 | .desc = "Print list of all currently implemented EC " |
| 187 | "parameter names", |
| 188 | .type = OPTION_FLAG, |
| 189 | .opt.flag = &cfg.list_curves, |
| 190 | }, |
| 191 | { |
| 192 | .name = "name", |
| 193 | .argname = "curve", |
| 194 | .desc = "Use the EC parameters with the specified name", |
| 195 | .type = OPTION_ARG, |
| 196 | .opt.arg = &cfg.curve_name, |
| 197 | }, |
| 198 | { |
| 199 | .name = "no_seed", |
| 200 | .desc = "Do not output seed with explicit parameter encoding", |
| 201 | .type = OPTION_FLAG, |
| 202 | .opt.flag = &cfg.no_seed, |
| 203 | }, |
| 204 | { |
| 205 | .name = "noout", |
| 206 | .desc = "Do not output encoded version of EC parameters", |
| 207 | .type = OPTION_FLAG, |
| 208 | .opt.flag = &cfg.noout, |
| 209 | }, |
| 210 | { |
| 211 | .name = "out", |
| 212 | .argname = "file", |
| 213 | .desc = "Output file to write parameters to (default stdout)", |
| 214 | .type = OPTION_ARG, |
| 215 | .opt.arg = &cfg.outfile, |
| 216 | }, |
| 217 | { |
| 218 | .name = "outform", |
| 219 | .argname = "format", |
| 220 | .desc = "Output format (DER or PEM)", |
| 221 | .type = OPTION_ARG_FORMAT, |
| 222 | .opt.value = &cfg.outformat, |
| 223 | }, |
| 224 | { |
| 225 | .name = "param_enc", |
| 226 | .argname = "type", |
| 227 | .desc = "Specify EC parameter ASN.1 encoding type:\n" |
| 228 | " explicit, named_curve (default)", |
| 229 | .type = OPTION_ARG_FUNC, |
| 230 | .opt.argfunc = ecparam_opt_enctype, |
| 231 | }, |
| 232 | { |
| 233 | .name = "text", |
| 234 | .desc = "Print out the EC parameters in human readable form", |
| 235 | .type = OPTION_FLAG, |
| 236 | .opt.flag = &cfg.text, |
| 237 | }, |
| 238 | {NULL((void *)0)}, |
| 239 | }; |
| 240 | |
| 241 | static void |
| 242 | ecparam_usage(void) |
| 243 | { |
| 244 | fprintf(stderr(&__sF[2]), "usage: ecparam [-C] [-check] [-conv_form arg] " |
| 245 | " [-genkey]\n" |
| 246 | " [-in file] [-inform DER | PEM] [-list_curves] [-name arg]\n" |
| 247 | " [-no_seed] [-noout] [-out file] [-outform DER | PEM]\n" |
| 248 | " [-param_enc arg] [-text]\n\n"); |
| 249 | options_usage(ecparam_options); |
| 250 | } |
| 251 | |
| 252 | int |
| 253 | ecparam_main(int argc, char **argv) |
| 254 | { |
| 255 | BIGNUM *ec_p = NULL((void *)0), *ec_a = NULL((void *)0), *ec_b = NULL((void *)0), *ec_gen = NULL((void *)0); |
| 256 | BIGNUM *ec_order = NULL((void *)0), *ec_cofactor = NULL((void *)0); |
| 257 | EC_GROUP *group = NULL((void *)0); |
| 258 | unsigned char *buffer = NULL((void *)0); |
| 259 | BIO *in = NULL((void *)0), *out = NULL((void *)0); |
| 260 | int i, ret = 1; |
| 261 | |
| 262 | if (pledge("stdio cpath wpath rpath", NULL((void *)0)) == -1) { |
| 263 | perror("pledge"); |
| 264 | exit(1); |
| 265 | } |
| 266 | |
| 267 | memset(&cfg, 0, sizeof(cfg)); |
| 268 | cfg.asn1_flag = OPENSSL_EC_NAMED_CURVE0x001; |
| 269 | cfg.form = POINT_CONVERSION_UNCOMPRESSED; |
| 270 | cfg.informat = FORMAT_PEM3; |
| 271 | cfg.outformat = FORMAT_PEM3; |
| 272 | |
| 273 | if (options_parse(argc, argv, ecparam_options, NULL((void *)0), NULL((void *)0)) != 0) { |
| 274 | ecparam_usage(); |
| 275 | goto end; |
| 276 | } |
| 277 | |
| 278 | in = BIO_new(BIO_s_file()); |
| 279 | out = BIO_new(BIO_s_file()); |
| 280 | if ((in == NULL((void *)0)) || (out == NULL((void *)0))) { |
| 281 | ERR_print_errors(bio_err); |
| 282 | goto end; |
| 283 | } |
| 284 | if (cfg.infile == NULL((void *)0)) |
| 285 | BIO_set_fp(in, stdin, BIO_NOCLOSE)BIO_ctrl(in,106,0x00,(char *)(&__sF[0])); |
| 286 | else { |
| 287 | if (BIO_read_filename(in, cfg.infile)BIO_ctrl(in,108, 0x01|0x02,(char *)cfg.infile) <= 0) { |
| 288 | perror(cfg.infile); |
| 289 | goto end; |
| 290 | } |
| 291 | } |
| 292 | if (cfg.outfile == NULL((void *)0)) { |
| 293 | BIO_set_fp(out, stdout, BIO_NOCLOSE)BIO_ctrl(out,106,0x00,(char *)(&__sF[1])); |
| 294 | } else { |
| 295 | if (BIO_write_filename(out, cfg.outfile)BIO_ctrl(out,108, 0x01|0x04,cfg.outfile) <= 0) { |
| 296 | perror(cfg.outfile); |
| 297 | goto end; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | if (cfg.list_curves) { |
| 302 | EC_builtin_curve *curves = NULL((void *)0); |
| 303 | size_t crv_len = 0; |
| 304 | size_t n = 0; |
| 305 | |
| 306 | crv_len = EC_get_builtin_curves(NULL((void *)0), 0); |
| 307 | |
| 308 | curves = reallocarray(NULL((void *)0), crv_len, sizeof(EC_builtin_curve)); |
| 309 | if (curves == NULL((void *)0)) |
| 310 | goto end; |
| 311 | |
| 312 | if (!EC_get_builtin_curves(curves, crv_len)) { |
| 313 | free(curves); |
| 314 | goto end; |
| 315 | } |
| 316 | for (n = 0; n < crv_len; n++) { |
| 317 | const char *comment; |
| 318 | const char *sname; |
| 319 | comment = curves[n].comment; |
| 320 | sname = OBJ_nid2sn(curves[n].nid); |
| 321 | if (comment == NULL((void *)0)) |
| 322 | comment = "CURVE DESCRIPTION NOT AVAILABLE"; |
| 323 | if (sname == NULL((void *)0)) |
| 324 | sname = ""; |
| 325 | |
| 326 | BIO_printf(out, " %-10s: ", sname); |
| 327 | BIO_printf(out, "%s\n", comment); |
| 328 | } |
| 329 | |
| 330 | free(curves); |
| 331 | ret = 0; |
| 332 | goto end; |
| 333 | } |
| 334 | if (cfg.curve_name != NULL((void *)0)) { |
| 335 | int nid; |
| 336 | |
| 337 | /* |
| 338 | * workaround for the SECG curve names secp192r1 and |
| 339 | * secp256r1 (which are the same as the curves prime192v1 and |
| 340 | * prime256v1 defined in X9.62) |
| 341 | */ |
| 342 | if (!strcmp(cfg.curve_name, "secp192r1")) { |
| 343 | BIO_printf(bio_err, "using curve name prime192v1 " |
| 344 | "instead of secp192r1\n"); |
| 345 | nid = NID_X9_62_prime192v1409; |
| 346 | } else if (!strcmp(cfg.curve_name, "secp256r1")) { |
| 347 | BIO_printf(bio_err, "using curve name prime256v1 " |
| 348 | "instead of secp256r1\n"); |
| 349 | nid = NID_X9_62_prime256v1415; |
| 350 | } else |
| 351 | nid = OBJ_sn2nid(cfg.curve_name); |
| 352 | |
| 353 | if (nid == 0) |
| 354 | nid = EC_curve_nist2nid(cfg.curve_name); |
| 355 | |
| 356 | if (nid == 0) { |
| 357 | BIO_printf(bio_err, "unknown curve name (%s)\n", |
| 358 | cfg.curve_name); |
| 359 | goto end; |
| 360 | } |
| 361 | group = EC_GROUP_new_by_curve_name(nid); |
| 362 | if (group == NULL((void *)0)) { |
| 363 | BIO_printf(bio_err, "unable to create curve (%s)\n", |
| 364 | cfg.curve_name); |
| 365 | goto end; |
| 366 | } |
| 367 | EC_GROUP_set_asn1_flag(group, cfg.asn1_flag); |
| 368 | EC_GROUP_set_point_conversion_form(group, cfg.form); |
| 369 | } else if (cfg.informat == FORMAT_ASN11) { |
| 370 | group = d2i_ECPKParameters_bio(in, NULL)((EC_GROUP*)ASN1_d2i_bio( ((void *(*)(void)) (1 ? ((void *)0) : ((EC_GROUP *(*)(void))0))), ((d2i_of_void*) (1 ? d2i_ECPKParameters : ((EC_GROUP *(*)(EC_GROUP **,const unsigned char **,long))0 ))), in, ((void**) (1 ? ((void *)0) : (EC_GROUP**)0)))); |
| 371 | } else if (cfg.informat == FORMAT_PEM3) { |
| 372 | group = PEM_read_bio_ECPKParameters(in, NULL((void *)0), NULL((void *)0), NULL((void *)0)); |
| 373 | } else { |
| 374 | BIO_printf(bio_err, "bad input format specified\n"); |
| 375 | goto end; |
| 376 | } |
| 377 | |
| 378 | if (group == NULL((void *)0)) { |
| 379 | BIO_printf(bio_err, |
| 380 | "unable to load elliptic curve parameters\n"); |
| 381 | ERR_print_errors(bio_err); |
| 382 | goto end; |
| 383 | } |
| 384 | if (cfg.new_form) |
| 385 | EC_GROUP_set_point_conversion_form(group, cfg.form); |
| 386 | |
| 387 | if (cfg.new_asn1_flag) |
| 388 | EC_GROUP_set_asn1_flag(group, cfg.asn1_flag); |
| 389 | |
| 390 | if (cfg.no_seed) |
| 391 | EC_GROUP_set_seed(group, NULL((void *)0), 0); |
| 392 | |
| 393 | if (cfg.text) { |
| 394 | if (!ECPKParameters_print(out, group, 0)) |
| 395 | goto end; |
| 396 | } |
| 397 | if (cfg.check) { |
| 398 | BIO_printf(bio_err, "checking elliptic curve parameters: "); |
| 399 | if (!EC_GROUP_check(group, NULL((void *)0))) { |
| 400 | BIO_printf(bio_err, "failed\n"); |
| 401 | ERR_print_errors(bio_err); |
| 402 | } else |
| 403 | BIO_printf(bio_err, "ok\n"); |
| 404 | |
| 405 | } |
| 406 | if (cfg.C) { |
| 407 | size_t buf_len = 0, tmp_len = 0; |
| 408 | const EC_POINT *point; |
| 409 | int is_prime, len = 0; |
| 410 | const EC_METHOD *meth = EC_GROUP_method_of(group); |
| 411 | |
| 412 | if ((ec_p = BN_new()) == NULL((void *)0) || (ec_a = BN_new()) == NULL((void *)0) || |
| 413 | (ec_b = BN_new()) == NULL((void *)0) || (ec_gen = BN_new()) == NULL((void *)0) || |
| 414 | (ec_order = BN_new()) == NULL((void *)0) || |
| 415 | (ec_cofactor = BN_new()) == NULL((void *)0)) { |
| 416 | perror("malloc"); |
| 417 | goto end; |
| 418 | } |
| 419 | is_prime = (EC_METHOD_get_field_type(meth) == |
| 420 | NID_X9_62_prime_field406); |
| 421 | |
| 422 | if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL((void *)0))) |
| 423 | goto end; |
| 424 | |
| 425 | if ((point = EC_GROUP_get0_generator(group)) == NULL((void *)0)) |
| 426 | goto end; |
| 427 | if (!EC_POINT_point2bn(group, point, |
| 428 | EC_GROUP_get_point_conversion_form(group), ec_gen, |
| 429 | NULL((void *)0))) |
| 430 | goto end; |
| 431 | if (!EC_GROUP_get_order(group, ec_order, NULL((void *)0))) |
| 432 | goto end; |
| 433 | if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL((void *)0))) |
| 434 | goto end; |
| 435 | |
| 436 | len = BN_num_bits(ec_order); |
| 437 | |
| 438 | if ((tmp_len = (size_t) BN_num_bytes(ec_p)((BN_num_bits(ec_p)+7)/8)) > buf_len) |
| 439 | buf_len = tmp_len; |
| 440 | if ((tmp_len = (size_t) BN_num_bytes(ec_a)((BN_num_bits(ec_a)+7)/8)) > buf_len) |
| 441 | buf_len = tmp_len; |
| 442 | if ((tmp_len = (size_t) BN_num_bytes(ec_b)((BN_num_bits(ec_b)+7)/8)) > buf_len) |
| 443 | buf_len = tmp_len; |
| 444 | if ((tmp_len = (size_t) BN_num_bytes(ec_gen)((BN_num_bits(ec_gen)+7)/8)) > buf_len) |
| 445 | buf_len = tmp_len; |
| 446 | if ((tmp_len = (size_t) BN_num_bytes(ec_order)((BN_num_bits(ec_order)+7)/8)) > buf_len) |
| 447 | buf_len = tmp_len; |
| 448 | if ((tmp_len = (size_t) BN_num_bytes(ec_cofactor)((BN_num_bits(ec_cofactor)+7)/8)) > buf_len) |
| 449 | buf_len = tmp_len; |
| 450 | |
| 451 | buffer = malloc(buf_len); |
| 452 | |
| 453 | if (buffer == NULL((void *)0)) { |
| 454 | perror("malloc"); |
| 455 | goto end; |
| 456 | } |
| 457 | ecparam_print_var(out, ec_p, "ec_p", len, buffer); |
| 458 | ecparam_print_var(out, ec_a, "ec_a", len, buffer); |
| 459 | ecparam_print_var(out, ec_b, "ec_b", len, buffer); |
| 460 | ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); |
| 461 | ecparam_print_var(out, ec_order, "ec_order", len, buffer); |
| 462 | ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, |
| 463 | buffer); |
| 464 | |
| 465 | BIO_printf(out, "\n\n"); |
| 466 | |
| 467 | BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); |
| 468 | BIO_printf(out, "\tint ok=0;\n"); |
| 469 | BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); |
| 470 | BIO_printf(out, "\tEC_POINT *point = NULL;\n"); |
| 471 | BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " |
| 472 | "*tmp_3 = NULL;\n\n"); |
| 473 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " |
| 474 | "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" |
| 475 | "goto err;\n", len, len); |
| 476 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " |
| 477 | "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" |
| 478 | "goto err;\n", len, len); |
| 479 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " |
| 480 | "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" |
| 481 | "goto err;\n", len, len); |
| 482 | if (is_prime) { |
| 483 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" |
| 484 | "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" |
| 485 | "\n\t\tgoto err;\n\n"); |
| 486 | } else { |
| 487 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" |
| 488 | "GF2m(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" |
| 489 | "\n\t\tgoto err;\n\n"); |
| 490 | } |
| 491 | BIO_printf(out, "\t/* build generator */\n"); |
| 492 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " |
| 493 | "sizeof(ec_gen_%d), tmp_1)) == NULL)" |
| 494 | "\n\t\tgoto err;\n", len, len); |
| 495 | BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " |
| 496 | "NULL, NULL);\n"); |
| 497 | BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); |
| 498 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " |
| 499 | "sizeof(ec_order_%d), tmp_2)) == NULL)" |
| 500 | "\n\t\tgoto err;\n", len, len); |
| 501 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " |
| 502 | "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" |
| 503 | "\n\t\tgoto err;\n", len, len); |
| 504 | BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," |
| 505 | " tmp_2, tmp_3))\n\t\tgoto err;\n"); |
| 506 | BIO_printf(out, "\n\tok=1;\n"); |
| 507 | BIO_printf(out, "err:\n"); |
| 508 | BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); |
| 509 | BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); |
| 510 | BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); |
| 511 | BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); |
| 512 | BIO_printf(out, "\tif (!ok)\n"); |
| 513 | BIO_printf(out, "\t\t{\n"); |
| 514 | BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); |
| 515 | BIO_printf(out, "\t\tgroup = NULL;\n"); |
| 516 | BIO_printf(out, "\t\t}\n"); |
| 517 | BIO_printf(out, "\treturn(group);\n\t}\n"); |
| 518 | } |
| 519 | if (!cfg.noout) { |
| 520 | if (cfg.outformat == FORMAT_ASN11) |
| 521 | i = i2d_ECPKParameters_bio(out, group)(ASN1_i2d_bio(((i2d_of_void*) (1 ? i2d_ECPKParameters : ((int (*)(const EC_GROUP *,unsigned char **))0))), out, ((void*) ( 1 ? group : (const EC_GROUP*)0)))); |
| 522 | else if (cfg.outformat == FORMAT_PEM3) |
| 523 | i = PEM_write_bio_ECPKParameters(out, group); |
| 524 | else { |
| 525 | BIO_printf(bio_err, "bad output format specified for" |
| 526 | " outfile\n"); |
| 527 | goto end; |
| 528 | } |
| 529 | if (!i) { |
| 530 | BIO_printf(bio_err, "unable to write elliptic " |
| 531 | "curve parameters\n"); |
| 532 | ERR_print_errors(bio_err); |
| 533 | goto end; |
| 534 | } |
| 535 | } |
| 536 | if (cfg.genkey) { |
| 537 | EC_KEY *eckey = EC_KEY_new(); |
| 538 | |
| 539 | if (eckey == NULL((void *)0)) |
| 540 | goto end; |
| 541 | |
| 542 | if (EC_KEY_set_group(eckey, group) == 0) { |
| 543 | EC_KEY_free(eckey); |
| 544 | goto end; |
| 545 | } |
| 546 | |
| 547 | if (!EC_KEY_generate_key(eckey)) { |
| 548 | EC_KEY_free(eckey); |
| 549 | goto end; |
| 550 | } |
| 551 | if (cfg.outformat == FORMAT_ASN11) |
| 552 | i = i2d_ECPrivateKey_bio(out, eckey); |
Value stored to 'i' is never read | |
| 553 | else if (cfg.outformat == FORMAT_PEM3) |
| 554 | i = PEM_write_bio_ECPrivateKey(out, eckey, NULL((void *)0), |
| 555 | NULL((void *)0), 0, NULL((void *)0), NULL((void *)0)); |
| 556 | else { |
| 557 | BIO_printf(bio_err, "bad output format specified " |
| 558 | "for outfile\n"); |
| 559 | EC_KEY_free(eckey); |
| 560 | goto end; |
| 561 | } |
| 562 | EC_KEY_free(eckey); |
| 563 | } |
| 564 | ret = 0; |
| 565 | |
| 566 | end: |
| 567 | BN_free(ec_p); |
| 568 | BN_free(ec_a); |
| 569 | BN_free(ec_b); |
| 570 | BN_free(ec_gen); |
| 571 | BN_free(ec_order); |
| 572 | BN_free(ec_cofactor); |
| 573 | |
| 574 | free(buffer); |
| 575 | |
| 576 | BIO_free(in); |
| 577 | BIO_free_all(out); |
| 578 | EC_GROUP_free(group); |
| 579 | |
| 580 | return (ret); |
| 581 | } |
| 582 | |
| 583 | static int |
| 584 | ecparam_print_var(BIO * out, BIGNUM * in, const char *var, |
| 585 | int len, unsigned char *buffer) |
| 586 | { |
| 587 | BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); |
| 588 | if (BN_is_zero(in)) |
| 589 | BIO_printf(out, "\n\t0x00"); |
| 590 | else { |
| 591 | int i, l; |
| 592 | |
| 593 | l = BN_bn2bin(in, buffer); |
| 594 | for (i = 0; i < l - 1; i++) { |
| 595 | if ((i % 12) == 0) |
| 596 | BIO_printf(out, "\n\t"); |
| 597 | BIO_printf(out, "0x%02X,", buffer[i]); |
| 598 | } |
| 599 | if ((i % 12) == 0) |
| 600 | BIO_printf(out, "\n\t"); |
| 601 | BIO_printf(out, "0x%02X", buffer[i]); |
| 602 | } |
| 603 | BIO_printf(out, "\n\t};\n\n"); |
| 604 | return 1; |
| 605 | } |
| 606 | #endif |