apps/ecparam.c

   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
 115
 116 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 117
 118 int MAIN(int, char **);
 119
 120 int 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
 135         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 136                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 137         unsigned char *buffer = NULL;
 138
 139         apps_startup();
 140
 141         if (bio_err == NULL)
 142                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 143                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 144
 145         if (!load_config(bio_err, NULL))
 146                 goto end;
 147
 148         informat=FORMAT_PEM;
 149         outformat=FORMAT_PEM;
 150
 151         prog=argv[0];
 152         argc--;
 153         argv++;
 154         while (argc >= 1)
 155                 {
 156                 if      (strcmp(*argv,"-inform") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         informat=str2fmt(*(++argv));
 160                         }
 161                 else if (strcmp(*argv,"-outform") == 0)
 162                         {
 163                         if (--argc < 1) goto bad;
 164                         outformat=str2fmt(*(++argv));
 165                         }
 166                 else if (strcmp(*argv,"-in") == 0)
 167                         {
 168                         if (--argc < 1) goto bad;
 169                         infile= *(++argv);
 170                         }
 171                 else if (strcmp(*argv,"-out") == 0)
 172                         {
 173                         if (--argc < 1) goto bad;
 174                         outfile= *(++argv);
 175                         }
 176                 else if (strcmp(*argv,"-text") == 0)
 177                         text = 1;
 178                 else if (strcmp(*argv,"-C") == 0)
 179                         C = 1;
 180                 else if (strcmp(*argv,"-check") == 0)
 181                         check = 1;
 182                 else if (strcmp (*argv, "-name") == 0)
 183                         {
 184                         if (--argc < 1)
 185                                 goto bad;
 186                         curve_name = *(++argv);
 187                         }
 188                 else if (strcmp(*argv, "-list_curves") == 0)
 189                         list_curves = 1;
 190                 else if (strcmp(*argv, "-conv_form") == 0)
 191                         {
 192                         if (--argc < 1)
 193                                 goto bad;
 194                         ++argv;
 195                         new_form = 1;
 196                         if (strcmp(*argv, "compressed") == 0)
 197                                 form = POINT_CONVERSION_COMPRESSED;
 198                         else if (strcmp(*argv, "uncompressed") == 0)
 199                                 form = POINT_CONVERSION_UNCOMPRESSED;
 200                         else if (strcmp(*argv, "hybrid") == 0)
 201                                 form = POINT_CONVERSION_HYBRID;
 202                         else
 203                                 goto bad;
 204                         }
 205                 else if (strcmp(*argv, "-param_enc") == 0)
 206                         {
 207                         if (--argc < 1)
 208                                 goto bad;
 209                         ++argv;
 210                         new_asn1_flag = 1;
 211                         if (strcmp(*argv, "named_curve") == 0)
 212                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 213                         else if (strcmp(*argv, "explicit") == 0)
 214                                 asn1_flag = 0;
 215                         else
 216                                 goto bad;
 217                         }
 218                 else if (strcmp(*argv, "-no_seed") == 0)
 219                         no_seed = 1;
 220                 else if (strcmp(*argv, "-noout") == 0)
 221                         noout=1;
 222                 else if (strcmp(*argv,"-genkey") == 0)
 223                         {
 224                         genkey=1;
 225                         need_rand=1;
 226                         }
 227                 else if (strcmp(*argv, "-rand") == 0)
 228                         {
 229                         if (--argc < 1) goto bad;
 230                         inrand= *(++argv);
 231                         need_rand=1;
 232                         }
 233                 else if(strcmp(*argv, "-engine") == 0)
 234                         {
 235                         if (--argc < 1) goto bad;
 236                         engine = *(++argv);
 237                         }
 238                 else
 239                         {
 240                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 241                         badops=1;
 242                         break;
 243                         }
 244                 argc--;
 245                 argv++;
 246                 }
 247
 248         if (badops)
 249                 {
 250 bad:
 251                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 252                 BIO_printf(bio_err, "where options are\n");
 253                 BIO_printf(bio_err, " -inform arg       input format - "
 254                                 "default PEM (DER or PEM)\n");
 255                 BIO_printf(bio_err, " -outform arg      output format - "
 256                                 "default PEM\n");
 257                 BIO_printf(bio_err, " -in  arg          input file  - "
 258                                 "default stdin\n");
 259                 BIO_printf(bio_err, " -out arg          output file - "
 260                                 "default stdout\n");
 261                 BIO_printf(bio_err, " -noout            do not print the "
 262                                 "ec parameter\n");
 263                 BIO_printf(bio_err, " -text             print the ec "
 264                                 "parameters in text form\n");
 265                 BIO_printf(bio_err, " -check            validate the ec "
 266                                 "parameters\n");
 267                 BIO_printf(bio_err, " -C                print a 'C' "
 268                                 "function creating the parameters\n");
 269                 BIO_printf(bio_err, " -name arg         use the "
 270                                 "ec parameters with 'short name' name\n");
 271                 BIO_printf(bio_err, " -list_curves      prints a list of "
 272                                 "all currently available curve 'short names'\n");
 273                 BIO_printf(bio_err, " -conv_form arg    specifies the "
 274                                 "point conversion form \n");
 275                 BIO_printf(bio_err, "                   possible values:"
 276                                 " compressed\n");
 277                 BIO_printf(bio_err, "                                   "
 278                                 " uncompressed (default)\n");
 279                 BIO_printf(bio_err, "                                   "
 280                                 " hybrid\n");
 281                 BIO_printf(bio_err, " -param_enc arg    specifies the way"
 282                                 " the ec parameters are encoded\n");
 283                 BIO_printf(bio_err, "                   in the asn1 der "
 284                                 "encoding\n");
 285                 BIO_printf(bio_err, "                   possible values:"
 286                                 " named_curve (default)\n");
 287                 BIO_printf(bio_err, "                                   "
 288                                 " explicit\n");
 289                 BIO_printf(bio_err, " -no_seed          if 'explicit'"
 290                                 " parameters are chosen do not"
 291                                 " use the seed\n");
 292                 BIO_printf(bio_err, " -genkey           generate ec"
 293                                 " key\n");
 294                 BIO_printf(bio_err, " -rand file        files to use for"
 295                                 " random number input\n");
 296                 BIO_printf(bio_err, " -engine e         use engine e, "
 297                                 "possibly a hardware device\n");
 298                 goto end;
 299                 }
 300
 301         ERR_load_crypto_strings();
 302
 303         in=BIO_new(BIO_s_file());
 304         out=BIO_new(BIO_s_file());
 305         if ((in == NULL) || (out == NULL))
 306                 {
 307                 ERR_print_errors(bio_err);
 308                 goto end;
 309                 }
 310
 311         if (infile == NULL)
 312                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 313         else
 314                 {
 315                 if (BIO_read_filename(in,infile) <= 0)
 316                         {
 317                         perror(infile);
 318                         goto end;
 319                         }
 320                 }
 321         if (outfile == NULL)
 322                 {
 323                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 324 #ifdef OPENSSL_SYS_VMS
 325                 {
 326                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 327                 out = BIO_push(tmpbio, out);
 328                 }
 329 #endif
 330                 }
 331         else
 332                 {
 333                 if (BIO_write_filename(out,outfile) <= 0)
 334                         {
 335                         perror(outfile);
 336                         goto end;
 337                         }
 338                 }
 339
 340 #ifndef OPENSSL_NO_ENGINE
 341         setup_engine(bio_err, engine, 0);
 342 #endif
 343
 344         if (list_curves)
 345                 {
 346                 EC_builtin_curve *curves = NULL;
 347                 size_t crv_len = 0;
 348                 size_t n = 0;
 349
 350                 crv_len = EC_get_builtin_curves(NULL, 0);
 351
 352                 curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len));
 353
 354                 if (curves == NULL)
 355                         goto end;
 356
 357                 if (!EC_get_builtin_curves(curves, crv_len))
 358                         {
 359                         OPENSSL_free(curves);
 360                         goto end;
 361                         }
 362
 363
 364                 for (n = 0; n < crv_len; n++)
 365                         {
 366                         const char *comment;
 367                         const char *sname;
 368                         comment = curves[n].comment;
 369                         sname   = OBJ_nid2sn(curves[n].nid);
 370                         if (comment == NULL)
 371                                 comment = "CURVE DESCRIPTION NOT AVAILABLE";
 372                         if (sname == NULL)
 373                                 sname = "";
 374
 375                         BIO_printf(out, "  %-10s: ", sname);
 376                         BIO_printf(out, "%s\n", comment);
 377                         }
 378
 379                 OPENSSL_free(curves);
 380                 ret = 0;
 381                 goto end;
 382                 }
 383
 384         if (curve_name != NULL)
 385                 {
 386                 int nid;
 387
 388                 /* workaround for the SECG curve names secp192r1
 389                  * and secp256r1 (which are the same as the curves
 390                  * prime192v1 and prime256v1 defined in X9.62)
 391                  */
 392                 if (!strcmp(curve_name, "secp192r1"))
 393                         {
 394                         BIO_printf(bio_err, "using curve name prime192v1 "
 395                                 "instead of secp192r1\n");
 396                         nid = NID_X9_62_prime192v1;
 397                         }
 398                 else if (!strcmp(curve_name, "secp256r1"))
 399                         {
 400                         BIO_printf(bio_err, "using curve name prime256v1 "
 401                                 "instead of secp256r1\n");
 402                         nid = NID_X9_62_prime256v1;
 403                         }
 404                 else
 405                         nid = OBJ_sn2nid(curve_name);
 406
 407                 if (nid == 0)
 408                         nid = EC_curve_nist2nid(curve_name);
 409
 410                 if (nid == 0)
 411                         {
 412                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 413                                 curve_name);
 414                         goto end;
 415                         }
 416
 417                 group = EC_GROUP_new_by_curve_name(nid);
 418                 if (group == NULL)
 419                         {
 420                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 421                                 curve_name);
 422                         goto end;
 423                         }
 424                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 425                 EC_GROUP_set_point_conversion_form(group, form);
 426                 }
 427         else if (informat == FORMAT_ASN1)
 428                 {
 429                 group = d2i_ECPKParameters_bio(in, NULL);
 430                 }
 431         else if (informat == FORMAT_PEM)
 432                 {
 433                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 434                 }
 435         else
 436                 {
 437                 BIO_printf(bio_err, "bad input format specified\n");
 438                 goto end;
 439                 }
 440
 441         if (group == NULL)
 442                 {
 443                 BIO_printf(bio_err,
 444                         "unable to load elliptic curve parameters\n");
 445                 ERR_print_errors(bio_err);
 446                 goto end;
 447                 }
 448
 449         if (new_form)
 450                 EC_GROUP_set_point_conversion_form(group, form);
 451
 452         if (new_asn1_flag)
 453                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 454
 455         if (no_seed)
 456                 {
 457                 EC_GROUP_set_seed(group, NULL, 0);
 458                 }
 459
 460         if (text)
 461                 {
 462                 if (!ECPKParameters_print(out, group, 0))
 463                         goto end;
 464                 }
 465
 466         if (check)
 467                 {
 468                 if (group == NULL)
 469                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 470                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 471                 if (!EC_GROUP_check(group, NULL))
 472                         {
 473                         BIO_printf(bio_err, "failed\n");
 474                         ERR_print_errors(bio_err);
 475                         }
 476                 else
 477                         BIO_printf(bio_err, "ok\n");
 478
 479                 }
 480
 481         if (C)
 482                 {
 483                 size_t  buf_len = 0, tmp_len = 0;
 484                 const EC_POINT *point;
 485                 int     is_prime, len = 0;
 486                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 487
 488                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 489                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 490                     (ec_order = BN_new()) == NULL ||
 491                     (ec_cofactor = BN_new()) == NULL )
 492                         {
 493                         perror("OPENSSL_malloc");
 494                         goto end;
 495                         }
 496
 497                 is_prime = (EC_METHOD_get_field_type(meth) ==
 498                         NID_X9_62_prime_field);
 499
 500                 if (is_prime)
 501                         {
 502                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 503                                 ec_b, NULL))
 504                                 goto end;
 505                         }
 506                 else
 507                         {
 508                         /* TODO */
 509                         goto end;
 510                         }
 511
 512                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 513                         goto end;
 514                 if (!EC_POINT_point2bn(group, point,
 515                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 516                         NULL))
 517                         goto end;
 518                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 519                         goto end;
 520                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 521                         goto end;
 522
 523                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 524                         !ec_order || !ec_cofactor)
 525                         goto end;
 526
 527                 len = BN_num_bits(ec_order);
 528
 529                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 530                         buf_len = tmp_len;
 531                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 532                         buf_len = tmp_len;
 533                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 534                         buf_len = tmp_len;
 535                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 536                         buf_len = tmp_len;
 537                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 538                         buf_len = tmp_len;
 539                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 540                         buf_len = tmp_len;
 541
 542                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 543
 544                 if (buffer == NULL)
 545                         {
 546                         perror("OPENSSL_malloc");
 547                         goto end;
 548                         }
 549
 550                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 551                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 552                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 553                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 554                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 555                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 556                         buffer);
 557
 558                 BIO_printf(out, "\n\n");
 559
 560                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 561                 BIO_printf(out, "\tint ok=0;\n");
 562                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 563                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 564                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 565                                 "*tmp_3 = NULL;\n\n");
 566                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 567                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 568                                 "goto err;\n", len, len);
 569                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 570                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 571                                 "goto err;\n", len, len);
 572                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 573                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 574                                 "goto err;\n", len, len);
 575                 if (is_prime)
 576                         {
 577                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 578                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 579                                 "\n\t\tgoto err;\n\n");
 580                         }
 581                 else
 582                         {
 583                         /* TODO */
 584                         goto end;
 585                         }
 586                 BIO_printf(out, "\t/* build generator */\n");
 587                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 588                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 589                                 "\n\t\tgoto err;\n", len, len);
 590                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 591                                 "NULL, NULL);\n");
 592                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 593                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 594                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 595                                 "\n\t\tgoto err;\n", len, len);
 596                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 597                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 598                                 "\n\t\tgoto err;\n", len, len);
 599                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 600                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 601                 BIO_printf(out, "\n\tok=1;\n");
 602                 BIO_printf(out, "err:\n");
 603                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 604                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 605                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 606                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 607                 BIO_printf(out, "\tif (!ok)\n");
 608                 BIO_printf(out, "\t\t{\n");
 609                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 610                 BIO_printf(out, "\t\tgroup = NULL;\n");
 611                 BIO_printf(out, "\t\t}\n");
 612                 BIO_printf(out, "\treturn(group);\n\t}\n");
 613         }
 614
 615         if (!noout)
 616                 {
 617                 if (outformat == FORMAT_ASN1)
 618                         i = i2d_ECPKParameters_bio(out, group);
 619                 else if (outformat == FORMAT_PEM)
 620                         i = PEM_write_bio_ECPKParameters(out, group);
 621                 else
 622                         {
 623                         BIO_printf(bio_err,"bad output format specified for"
 624                                 " outfile\n");
 625                         goto end;
 626                         }
 627                 if (!i)
 628                         {
 629                         BIO_printf(bio_err, "unable to write elliptic "
 630                                 "curve parameters\n");
 631                         ERR_print_errors(bio_err);
 632                         goto end;
 633                         }
 634                 }
 635
 636         if (need_rand)
 637                 {
 638                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 639                 if (inrand != NULL)
 640                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 641                                 app_RAND_load_files(inrand));
 642                 }
 643
 644         if (genkey)
 645                 {
 646                 EC_KEY *eckey = EC_KEY_new();
 647
 648                 if (eckey == NULL)
 649                         goto end;
 650
 651                 assert(need_rand);
 652
 653                 if (EC_KEY_set_group(eckey, group) == 0)
 654                         goto end;
 655
 656                 if (!EC_KEY_generate_key(eckey))
 657                         {
 658                         EC_KEY_free(eckey);
 659                         goto end;
 660                         }
 661                 if (outformat == FORMAT_ASN1)
 662                         i = i2d_ECPrivateKey_bio(out, eckey);
 663                 else if (outformat == FORMAT_PEM)
 664                         i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
 665                                 NULL, 0, NULL, NULL);
 666                 else
 667                         {
 668                         BIO_printf(bio_err, "bad output format specified "
 669                                 "for outfile\n");
 670                         EC_KEY_free(eckey);
 671                         goto end;
 672                         }
 673                 EC_KEY_free(eckey);
 674                 }
 675
 676         if (need_rand)
 677                 app_RAND_write_file(NULL, bio_err);
 678
 679         ret=0;
 680 end:
 681         if (ec_p)
 682                 BN_free(ec_p);
 683         if (ec_a)
 684                 BN_free(ec_a);
 685         if (ec_b)
 686                 BN_free(ec_b);
 687         if (ec_gen)
 688                 BN_free(ec_gen);
 689         if (ec_order)
 690                 BN_free(ec_order);
 691         if (ec_cofactor)
 692                 BN_free(ec_cofactor);
 693         if (buffer)
 694                 OPENSSL_free(buffer);
 695         if (in != NULL)
 696                 BIO_free(in);
 697         if (out != NULL)
 698                 BIO_free_all(out);
 699         if (group != NULL)
 700                 EC_GROUP_free(group);
 701         apps_shutdown();
 702         OPENSSL_EXIT(ret);
 703 }
 704
 705 static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 706         int len, unsigned char *buffer)
 707         {
 708         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 709         if (BN_is_zero(in))
 710                 BIO_printf(out, "\n\t0x00");
 711         else
 712                 {
 713                 int i, l;
 714
 715                 l = BN_bn2bin(in, buffer);
 716                 for (i=0; i<l-1; i++)
 717                         {
 718                         if ((i%12) == 0)
 719                                 BIO_printf(out, "\n\t");
 720                         BIO_printf(out, "0x%02X,", buffer[i]);
 721                         }
 722                 if ((i%12) == 0)
 723                         BIO_printf(out, "\n\t");
 724                 BIO_printf(out, "0x%02X", buffer[i]);
 725                 }
 726         BIO_printf(out, "\n\t};\n\n");
 727         return 1;
 728         }
 729 #else /* !OPENSSL_NO_EC */
 730
 731 # if PEDANTIC
 732 static void *dummy=&dummy;
 733 # endif
 734
 735 #endif