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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh (at) 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 732
