ecparam.c revision 312826
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/*- 91 * -inform arg - input format - default PEM (DER or PEM) 92 * -outform arg - output format - default PEM 93 * -in arg - input file - default stdin 94 * -out arg - output file - default stdout 95 * -noout - do not print the ec parameter 96 * -text - print the ec parameters in text form 97 * -check - validate the ec parameters 98 * -C - print a 'C' function creating the parameters 99 * -name arg - use the ec parameters with 'short name' name 100 * -list_curves - prints a list of all currently available curve 'short names' 101 * -conv_form arg - specifies the point conversion form 102 * - possible values: compressed 103 * uncompressed (default) 104 * hybrid 105 * -param_enc arg - specifies the way the ec parameters are encoded 106 * in the asn1 der encoding 107 * possible values: named_curve (default) 108 * explicit 109 * -no_seed - if 'explicit' parameters are chosen do not use the seed 110 * -genkey - generate ec key 111 * -rand file - files to use for random number input 112 * -engine e - use engine e, possibly a hardware device 113 */ 114 115static int ecparam_print_var(BIO *, BIGNUM *, const char *, int, 116 unsigned char *); 117 118int MAIN(int, char **); 119 120int MAIN(int argc, char **argv) 121{ 122 EC_GROUP *group = NULL; 123 point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; 124 int new_form = 0; 125 int asn1_flag = OPENSSL_EC_NAMED_CURVE; 126 int new_asn1_flag = 0; 127 char *curve_name = NULL, *inrand = NULL; 128 int list_curves = 0, no_seed = 0, check = 0, 129 badops = 0, text = 0, i, need_rand = 0, genkey = 0; 130 char *infile = NULL, *outfile = NULL, *prog; 131 BIO *in = NULL, *out = NULL; 132 int informat, outformat, noout = 0, C = 0, ret = 1; 133 char *engine = NULL; 134 ENGINE *e = NULL; 135 136 BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, 137 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL; 138 unsigned char *buffer = NULL; 139 140 apps_startup(); 141 142 if (bio_err == NULL) 143 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 144 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 145 146 if (!load_config(bio_err, NULL)) 147 goto end; 148 149 informat = FORMAT_PEM; 150 outformat = FORMAT_PEM; 151 152 prog = argv[0]; 153 argc--; 154 argv++; 155 while (argc >= 1) { 156 if (strcmp(*argv, "-inform") == 0) { 157 if (--argc < 1) 158 goto bad; 159 informat = str2fmt(*(++argv)); 160 } else if (strcmp(*argv, "-outform") == 0) { 161 if (--argc < 1) 162 goto bad; 163 outformat = str2fmt(*(++argv)); 164 } else if (strcmp(*argv, "-in") == 0) { 165 if (--argc < 1) 166 goto bad; 167 infile = *(++argv); 168 } else if (strcmp(*argv, "-out") == 0) { 169 if (--argc < 1) 170 goto bad; 171 outfile = *(++argv); 172 } else if (strcmp(*argv, "-text") == 0) 173 text = 1; 174 else if (strcmp(*argv, "-C") == 0) 175 C = 1; 176 else if (strcmp(*argv, "-check") == 0) 177 check = 1; 178 else if (strcmp(*argv, "-name") == 0) { 179 if (--argc < 1) 180 goto bad; 181 curve_name = *(++argv); 182 } else if (strcmp(*argv, "-list_curves") == 0) 183 list_curves = 1; 184 else if (strcmp(*argv, "-conv_form") == 0) { 185 if (--argc < 1) 186 goto bad; 187 ++argv; 188 new_form = 1; 189 if (strcmp(*argv, "compressed") == 0) 190 form = POINT_CONVERSION_COMPRESSED; 191 else if (strcmp(*argv, "uncompressed") == 0) 192 form = POINT_CONVERSION_UNCOMPRESSED; 193 else if (strcmp(*argv, "hybrid") == 0) 194 form = POINT_CONVERSION_HYBRID; 195 else 196 goto bad; 197 } else if (strcmp(*argv, "-param_enc") == 0) { 198 if (--argc < 1) 199 goto bad; 200 ++argv; 201 new_asn1_flag = 1; 202 if (strcmp(*argv, "named_curve") == 0) 203 asn1_flag = OPENSSL_EC_NAMED_CURVE; 204 else if (strcmp(*argv, "explicit") == 0) 205 asn1_flag = 0; 206 else 207 goto bad; 208 } else if (strcmp(*argv, "-no_seed") == 0) 209 no_seed = 1; 210 else if (strcmp(*argv, "-noout") == 0) 211 noout = 1; 212 else if (strcmp(*argv, "-genkey") == 0) { 213 genkey = 1; 214 need_rand = 1; 215 } else if (strcmp(*argv, "-rand") == 0) { 216 if (--argc < 1) 217 goto bad; 218 inrand = *(++argv); 219 need_rand = 1; 220 } else if (strcmp(*argv, "-engine") == 0) { 221 if (--argc < 1) 222 goto bad; 223 engine = *(++argv); 224 } else { 225 BIO_printf(bio_err, "unknown option %s\n", *argv); 226 badops = 1; 227 break; 228 } 229 argc--; 230 argv++; 231 } 232 233 if (badops) { 234 bad: 235 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 236 BIO_printf(bio_err, "where options are\n"); 237 BIO_printf(bio_err, " -inform arg input format - " 238 "default PEM (DER or PEM)\n"); 239 BIO_printf(bio_err, " -outform arg output format - " 240 "default PEM\n"); 241 BIO_printf(bio_err, " -in arg input file - " 242 "default stdin\n"); 243 BIO_printf(bio_err, " -out arg output file - " 244 "default stdout\n"); 245 BIO_printf(bio_err, " -noout do not print the " 246 "ec parameter\n"); 247 BIO_printf(bio_err, " -text print the ec " 248 "parameters in text form\n"); 249 BIO_printf(bio_err, " -check validate the ec " 250 "parameters\n"); 251 BIO_printf(bio_err, " -C print a 'C' " 252 "function creating the parameters\n"); 253 BIO_printf(bio_err, " -name arg use the " 254 "ec parameters with 'short name' name\n"); 255 BIO_printf(bio_err, " -list_curves prints a list of " 256 "all currently available curve 'short names'\n"); 257 BIO_printf(bio_err, " -conv_form arg specifies the " 258 "point conversion form \n"); 259 BIO_printf(bio_err, " possible values:" 260 " compressed\n"); 261 BIO_printf(bio_err, " " 262 " uncompressed (default)\n"); 263 BIO_printf(bio_err, " " 264 " hybrid\n"); 265 BIO_printf(bio_err, " -param_enc arg specifies the way" 266 " the ec parameters are encoded\n"); 267 BIO_printf(bio_err, " in the asn1 der " 268 "encoding\n"); 269 BIO_printf(bio_err, " possible values:" 270 " named_curve (default)\n"); 271 BIO_printf(bio_err, " " 272 " explicit\n"); 273 BIO_printf(bio_err, " -no_seed if 'explicit'" 274 " parameters are chosen do not" " use the seed\n"); 275 BIO_printf(bio_err, " -genkey generate ec" " key\n"); 276 BIO_printf(bio_err, " -rand file files to use for" 277 " random number input\n"); 278 BIO_printf(bio_err, " -engine e use engine e, " 279 "possibly a hardware device\n"); 280 goto end; 281 } 282 283 ERR_load_crypto_strings(); 284 285 in = BIO_new(BIO_s_file()); 286 out = BIO_new(BIO_s_file()); 287 if ((in == NULL) || (out == NULL)) { 288 ERR_print_errors(bio_err); 289 goto end; 290 } 291 292 if (infile == NULL) 293 BIO_set_fp(in, stdin, BIO_NOCLOSE); 294 else { 295 if (BIO_read_filename(in, infile) <= 0) { 296 perror(infile); 297 goto end; 298 } 299 } 300 if (outfile == NULL) { 301 BIO_set_fp(out, stdout, BIO_NOCLOSE); 302# ifdef OPENSSL_SYS_VMS 303 { 304 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 305 out = BIO_push(tmpbio, out); 306 } 307# endif 308 } else { 309 if (BIO_write_filename(out, outfile) <= 0) { 310 perror(outfile); 311 goto end; 312 } 313 } 314 315 e = setup_engine(bio_err, engine, 0); 316 317 if (list_curves) { 318 EC_builtin_curve *curves = NULL; 319 size_t crv_len = 0; 320 size_t n = 0; 321 322 crv_len = EC_get_builtin_curves(NULL, 0); 323 324 curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len)); 325 326 if (curves == NULL) 327 goto end; 328 329 if (!EC_get_builtin_curves(curves, crv_len)) { 330 OPENSSL_free(curves); 331 goto end; 332 } 333 334 for (n = 0; n < crv_len; n++) { 335 const char *comment; 336 const char *sname; 337 comment = curves[n].comment; 338 sname = OBJ_nid2sn(curves[n].nid); 339 if (comment == NULL) 340 comment = "CURVE DESCRIPTION NOT AVAILABLE"; 341 if (sname == NULL) 342 sname = ""; 343 344 BIO_printf(out, " %-10s: ", sname); 345 BIO_printf(out, "%s\n", comment); 346 } 347 348 OPENSSL_free(curves); 349 ret = 0; 350 goto end; 351 } 352 353 if (curve_name != NULL) { 354 int nid; 355 356 /* 357 * workaround for the SECG curve names secp192r1 and secp256r1 (which 358 * are the same as the curves prime192v1 and prime256v1 defined in 359 * X9.62) 360 */ 361 if (!strcmp(curve_name, "secp192r1")) { 362 BIO_printf(bio_err, "using curve name prime192v1 " 363 "instead of secp192r1\n"); 364 nid = NID_X9_62_prime192v1; 365 } else if (!strcmp(curve_name, "secp256r1")) { 366 BIO_printf(bio_err, "using curve name prime256v1 " 367 "instead of secp256r1\n"); 368 nid = NID_X9_62_prime256v1; 369 } else 370 nid = OBJ_sn2nid(curve_name); 371 372 if (nid == 0) 373 nid = EC_curve_nist2nid(curve_name); 374 375 if (nid == 0) { 376 BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name); 377 goto end; 378 } 379 380 group = EC_GROUP_new_by_curve_name(nid); 381 if (group == NULL) { 382 BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name); 383 goto end; 384 } 385 EC_GROUP_set_asn1_flag(group, asn1_flag); 386 EC_GROUP_set_point_conversion_form(group, form); 387 } else if (informat == FORMAT_ASN1) { 388 group = d2i_ECPKParameters_bio(in, NULL); 389 } else if (informat == FORMAT_PEM) { 390 group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL); 391 } else { 392 BIO_printf(bio_err, "bad input format specified\n"); 393 goto end; 394 } 395 396 if (group == NULL) { 397 BIO_printf(bio_err, "unable to load elliptic curve parameters\n"); 398 ERR_print_errors(bio_err); 399 goto end; 400 } 401 402 if (new_form) 403 EC_GROUP_set_point_conversion_form(group, form); 404 405 if (new_asn1_flag) 406 EC_GROUP_set_asn1_flag(group, asn1_flag); 407 408 if (no_seed) { 409 EC_GROUP_set_seed(group, NULL, 0); 410 } 411 412 if (text) { 413 if (!ECPKParameters_print(out, group, 0)) 414 goto end; 415 } 416 417 if (check) { 418 BIO_printf(bio_err, "checking elliptic curve parameters: "); 419 if (!EC_GROUP_check(group, NULL)) { 420 BIO_printf(bio_err, "failed\n"); 421 ERR_print_errors(bio_err); 422 goto end; 423 } 424 BIO_printf(bio_err, "ok\n"); 425 426 } 427 428 if (C) { 429 size_t buf_len = 0, tmp_len = 0; 430 const EC_POINT *point; 431 int is_prime, len = 0; 432 const EC_METHOD *meth = EC_GROUP_method_of(group); 433 434 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL || 435 (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL || 436 (ec_order = BN_new()) == NULL || 437 (ec_cofactor = BN_new()) == NULL) { 438 perror("OPENSSL_malloc"); 439 goto end; 440 } 441 442 is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field); 443 444 if (is_prime) { 445 if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, ec_b, NULL)) 446 goto end; 447 } else { 448 /* TODO */ 449 goto end; 450 } 451 452 if ((point = EC_GROUP_get0_generator(group)) == NULL) 453 goto end; 454 if (!EC_POINT_point2bn(group, point, 455 EC_GROUP_get_point_conversion_form(group), 456 ec_gen, NULL)) 457 goto end; 458 if (!EC_GROUP_get_order(group, ec_order, NULL)) 459 goto end; 460 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL)) 461 goto end; 462 463 if (!ec_p || !ec_a || !ec_b || !ec_gen || !ec_order || !ec_cofactor) 464 goto end; 465 466 len = BN_num_bits(ec_order); 467 468 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len) 469 buf_len = tmp_len; 470 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len) 471 buf_len = tmp_len; 472 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len) 473 buf_len = tmp_len; 474 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len) 475 buf_len = tmp_len; 476 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len) 477 buf_len = tmp_len; 478 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len) 479 buf_len = tmp_len; 480 481 buffer = (unsigned char *)OPENSSL_malloc(buf_len); 482 483 if (buffer == NULL) { 484 perror("OPENSSL_malloc"); 485 goto end; 486 } 487 488 ecparam_print_var(out, ec_p, "ec_p", len, buffer); 489 ecparam_print_var(out, ec_a, "ec_a", len, buffer); 490 ecparam_print_var(out, ec_b, "ec_b", len, buffer); 491 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); 492 ecparam_print_var(out, ec_order, "ec_order", len, buffer); 493 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, buffer); 494 495 BIO_printf(out, "\n\n"); 496 497 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); 498 BIO_printf(out, "\tint ok=0;\n"); 499 BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); 500 BIO_printf(out, "\tEC_POINT *point = NULL;\n"); 501 BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " 502 "*tmp_3 = NULL;\n\n"); 503 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " 504 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" 505 "goto err;\n", len, len); 506 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " 507 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" 508 "goto err;\n", len, len); 509 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " 510 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" 511 "goto err;\n", len, len); 512 if (is_prime) { 513 BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" 514 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" 515 "\n\t\tgoto err;\n\n"); 516 } else { 517 /* TODO */ 518 goto end; 519 } 520 BIO_printf(out, "\t/* build generator */\n"); 521 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " 522 "sizeof(ec_gen_%d), tmp_1)) == NULL)" 523 "\n\t\tgoto err;\n", len, len); 524 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " 525 "NULL, NULL);\n"); 526 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); 527 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " 528 "sizeof(ec_order_%d), tmp_2)) == NULL)" 529 "\n\t\tgoto err;\n", len, len); 530 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " 531 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" 532 "\n\t\tgoto err;\n", len, len); 533 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," 534 " tmp_2, tmp_3))\n\t\tgoto err;\n"); 535 BIO_printf(out, "\n\tok=1;\n"); 536 BIO_printf(out, "err:\n"); 537 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); 538 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); 539 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); 540 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); 541 BIO_printf(out, "\tif (!ok)\n"); 542 BIO_printf(out, "\t\t{\n"); 543 BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); 544 BIO_printf(out, "\t\tgroup = NULL;\n"); 545 BIO_printf(out, "\t\t}\n"); 546 BIO_printf(out, "\treturn(group);\n\t}\n"); 547 } 548 549 if (!noout) { 550 if (outformat == FORMAT_ASN1) 551 i = i2d_ECPKParameters_bio(out, group); 552 else if (outformat == FORMAT_PEM) 553 i = PEM_write_bio_ECPKParameters(out, group); 554 else { 555 BIO_printf(bio_err, "bad output format specified for" 556 " outfile\n"); 557 goto end; 558 } 559 if (!i) { 560 BIO_printf(bio_err, "unable to write elliptic " 561 "curve parameters\n"); 562 ERR_print_errors(bio_err); 563 goto end; 564 } 565 } 566 567 if (need_rand) { 568 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 569 if (inrand != NULL) 570 BIO_printf(bio_err, "%ld semi-random bytes loaded\n", 571 app_RAND_load_files(inrand)); 572 } 573 574 if (genkey) { 575 EC_KEY *eckey = EC_KEY_new(); 576 577 if (eckey == NULL) 578 goto end; 579 580 assert(need_rand); 581 582 if (EC_KEY_set_group(eckey, group) == 0) 583 goto end; 584 585 if (!EC_KEY_generate_key(eckey)) { 586 EC_KEY_free(eckey); 587 goto end; 588 } 589 if (outformat == FORMAT_ASN1) 590 i = i2d_ECPrivateKey_bio(out, eckey); 591 else if (outformat == FORMAT_PEM) 592 i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, 593 NULL, 0, NULL, NULL); 594 else { 595 BIO_printf(bio_err, "bad output format specified " 596 "for outfile\n"); 597 EC_KEY_free(eckey); 598 goto end; 599 } 600 EC_KEY_free(eckey); 601 } 602 603 if (need_rand) 604 app_RAND_write_file(NULL, bio_err); 605 606 ret = 0; 607 end: 608 if (ec_p) 609 BN_free(ec_p); 610 if (ec_a) 611 BN_free(ec_a); 612 if (ec_b) 613 BN_free(ec_b); 614 if (ec_gen) 615 BN_free(ec_gen); 616 if (ec_order) 617 BN_free(ec_order); 618 if (ec_cofactor) 619 BN_free(ec_cofactor); 620 if (buffer) 621 OPENSSL_free(buffer); 622 if (group != NULL) 623 EC_GROUP_free(group); 624 release_engine(e); 625 if (in != NULL) 626 BIO_free(in); 627 if (out != NULL) 628 BIO_free_all(out); 629 apps_shutdown(); 630 OPENSSL_EXIT(ret); 631} 632 633static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var, 634 int len, unsigned char *buffer) 635{ 636 BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); 637 if (BN_is_zero(in)) 638 BIO_printf(out, "\n\t0x00"); 639 else { 640 int i, l; 641 642 l = BN_bn2bin(in, buffer); 643 for (i = 0; i < l - 1; i++) { 644 if ((i % 12) == 0) 645 BIO_printf(out, "\n\t"); 646 BIO_printf(out, "0x%02X,", buffer[i]); 647 } 648 if ((i % 12) == 0) 649 BIO_printf(out, "\n\t"); 650 BIO_printf(out, "0x%02X", buffer[i]); 651 } 652 BIO_printf(out, "\n\t};\n\n"); 653 return 1; 654} 655#else /* !OPENSSL_NO_EC */ 656 657# if PEDANTIC 658static void *dummy = &dummy; 659# endif 660 661#endif 662