apps/ecparam.c

   1 /* apps/ecparam.c */
   2 /*
   3  * Written by Nils Larsch for the OpenSSL project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1998-2002 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  * In addition, Sun covenants to all licensees who provide a reciprocal
  68  * covenant with respect to their own patents if any, not to sue under
  69  * current and future patent claims necessarily infringed by the making,
  70  * using, practicing, selling, offering for sale and/or otherwise
  71  * disposing of the Contribution as delivered hereunder
  72  * (or portions thereof), provided that such covenant shall not apply:
  73  *  1) for code that a licensee deletes from the Contribution;
  74  *  2) separates from the Contribution; or
  75  *  3) for infringements caused by:
  76  *       i) the modification of the Contribution or
  77  *      ii) the combination of the Contribution with other software or
  78  *          devices where such combination causes the infringement.
  79  *
  80  * The elliptic curve binary polynomial software is originally written by
  81  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  82  *
  83  */
  84 #ifndef OPENSSL_NO_EC
  85 #include <assert.h>
  86 #include <stdio.h>
  87 #include <stdlib.h>
  88 #include <time.h>
  89 #include <string.h>
  90 #include "apps.h"
  91 #include <openssl/bio.h>
  92 #include <openssl/err.h>
  93 #include <openssl/bn.h>
  94 #include <openssl/ec.h>
  95 #include <openssl/x509.h>
  96 #include <openssl/pem.h>
  97
  98 #undef PROG
  99 #define PROG    ecparam_main
 100
 101 /* -inform arg      - input format - default PEM (DER or PEM)
 102  * -outform arg     - output format - default PEM
 103  * -in  arg         - input file  - default stdin
 104  * -out arg         - output file - default stdout
 105  * -noout           - do not print the ec parameter
 106  * -text            - print the ec parameters in text form
 107  * -check           - validate the ec parameters
 108  * -C               - print a 'C' function creating the parameters
 109  * -name arg        - use the ec parameters with 'short name' name
 110  * -list_curves     - prints a list of all currently available curve 'short names'
 111  * -conv_form arg   - specifies the point conversion form
 112  *                  - possible values: compressed
 113  *                                     uncompressed (default)
 114  *                                     hybrid
 115  * -param_enc arg   - specifies the way the ec parameters are encoded
 116  *                    in the asn1 der encoding
 117  *                    possible values: named_curve (default)
 118  *                                     explicit
 119  * -no_seed         - if 'explicit' parameters are choosen do not use the seed
 120  * -genkey          - generate ec key
 121  * -rand file       - files to use for random number input
 122  * -engine e        - use engine e, possibly a hardware device
 123  */
 124
 125
 126 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 127
 128 int MAIN(int, char **);
 129
 130 int MAIN(int argc, char **argv)
 131         {
 132         EC_GROUP *group = NULL;
 133         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 134         int     new_form = 0;
 135         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 136         int     new_asn1_flag = 0;
 137         char    *curve_name = NULL, *inrand = NULL;
 138         int     list_curves = 0, no_seed = 0, check = 0,
 139                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 140         char    *infile = NULL, *outfile = NULL, *prog;
 141         BIO     *in = NULL, *out = NULL;
 142         int     informat, outformat, noout = 0, C = 0, ret = 1;
 143         ENGINE  *e = NULL;
 144         char    *engine = NULL;
 145
 146         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 147                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 148         unsigned char *buffer = NULL;
 149
 150         apps_startup();
 151
 152         if (bio_err == NULL)
 153                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 154                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 155
 156         if (!load_config(bio_err, NULL))
 157                 goto end;
 158
 159         informat=FORMAT_PEM;
 160         outformat=FORMAT_PEM;
 161
 162         prog=argv[0];
 163         argc--;
 164         argv++;
 165         while (argc >= 1)
 166                 {
 167                 if      (strcmp(*argv,"-inform") == 0)
 168                         {
 169                         if (--argc < 1) goto bad;
 170                         informat=str2fmt(*(++argv));
 171                         }
 172                 else if (strcmp(*argv,"-outform") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         outformat=str2fmt(*(++argv));
 176                         }
 177                 else if (strcmp(*argv,"-in") == 0)
 178                         {
 179                         if (--argc < 1) goto bad;
 180                         infile= *(++argv);
 181                         }
 182                 else if (strcmp(*argv,"-out") == 0)
 183                         {
 184                         if (--argc < 1) goto bad;
 185                         outfile= *(++argv);
 186                         }
 187                 else if (strcmp(*argv,"-text") == 0)
 188                         text = 1;
 189                 else if (strcmp(*argv,"-C") == 0)
 190                         C = 1;
 191                 else if (strcmp(*argv,"-check") == 0)
 192                         check = 1;
 193                 else if (strcmp (*argv, "-name") == 0)
 194                         {
 195                         if (--argc < 1)
 196                                 goto bad;
 197                         curve_name = *(++argv);
 198                         }
 199                 else if (strcmp(*argv, "-list_curves") == 0)
 200                         list_curves = 1;
 201                 else if (strcmp(*argv, "-conv_form") == 0)
 202                         {
 203                         if (--argc < 1)
 204                                 goto bad;
 205                         ++argv;
 206                         new_form = 1;
 207                         if (strcmp(*argv, "compressed") == 0)
 208                                 form = POINT_CONVERSION_COMPRESSED;
 209                         else if (strcmp(*argv, "uncompressed") == 0)
 210                                 form = POINT_CONVERSION_UNCOMPRESSED;
 211                         else if (strcmp(*argv, "hybrid") == 0)
 212                                 form = POINT_CONVERSION_HYBRID;
 213                         else
 214                                 goto bad;
 215                         }
 216                 else if (strcmp(*argv, "-param_enc") == 0)
 217                         {
 218                         if (--argc < 1)
 219                                 goto bad;
 220                         ++argv;
 221                         new_asn1_flag = 1;
 222                         if (strcmp(*argv, "named_curve") == 0)
 223                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 224                         else if (strcmp(*argv, "explicit") == 0)
 225                                 asn1_flag = 0;
 226                         else
 227                                 goto bad;
 228                         }
 229                 else if (strcmp(*argv, "-no_seed") == 0)
 230                         no_seed = 1;
 231                 else if (strcmp(*argv, "-noout") == 0)
 232                         noout=1;
 233                 else if (strcmp(*argv,"-genkey") == 0)
 234                         {
 235                         genkey=1;
 236                         need_rand=1;
 237                         }
 238                 else if (strcmp(*argv, "-rand") == 0)
 239                         {
 240                         if (--argc < 1) goto bad;
 241                         inrand= *(++argv);
 242                         need_rand=1;
 243                         }
 244                 else if(strcmp(*argv, "-engine") == 0)
 245                         {
 246                         if (--argc < 1) goto bad;
 247                         engine = *(++argv);
 248                         }
 249                 else
 250                         {
 251                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 252                         badops=1;
 253                         break;
 254                         }
 255                 argc--;
 256                 argv++;
 257                 }
 258
 259         if (badops)
 260                 {
 261 bad:
 262                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 263                 BIO_printf(bio_err, "where options are\n");
 264                 BIO_printf(bio_err, " -inform arg       input format - "
 265                                 "default PEM (DER or PEM)\n");
 266                 BIO_printf(bio_err, " -outform arg      output format - "
 267                                 "default PEM\n");
 268                 BIO_printf(bio_err, " -in  arg          input file  - "
 269                                 "default stdin\n");
 270                 BIO_printf(bio_err, " -out arg          output file - "
 271                                 "default stdout\n");
 272                 BIO_printf(bio_err, " -noout            do not print the "
 273                                 "ec parameter\n");
 274                 BIO_printf(bio_err, " -text             print the ec "
 275                                 "parameters in text form\n");
 276                 BIO_printf(bio_err, " -check            validate the ec "
 277                                 "parameters\n");
 278                 BIO_printf(bio_err, " -C                print a 'C' "
 279                                 "function creating the parameters\n");
 280                 BIO_printf(bio_err, " -name arg         use the "
 281                                 "ec parameters with 'short name' name\n");
 282                 BIO_printf(bio_err, " -list_curves      prints a list of "
 283                                 "all currently available curve 'short names'\n");
 284                 BIO_printf(bio_err, " -conv_form arg    specifies the "
 285                                 "point conversion form \n");
 286                 BIO_printf(bio_err, "                   possible values:"
 287                                 " compressed\n");
 288                 BIO_printf(bio_err, "                                   "
 289                                 " uncompressed (default)\n");
 290                 BIO_printf(bio_err, "                                   "
 291                                 " hybrid\n");
 292                 BIO_printf(bio_err, " -param_enc arg    specifies the way"
 293                                 " the ec parameters are encoded\n");
 294                 BIO_printf(bio_err, "                   in the asn1 der "
 295                                 "encoding\n");
 296                 BIO_printf(bio_err, "                   possible values:"
 297                                 " named_curve (default)\n");
 298                 BIO_printf(bio_err, "                                   "
 299                                 " explicit\n");
 300                 BIO_printf(bio_err, " -no_seed          if 'explicit'"
 301                                 " parameters are choosen do not"
 302                                 " use the seed\n");
 303                 BIO_printf(bio_err, " -genkey           generate ec"
 304                                 " key\n");
 305                 BIO_printf(bio_err, " -rand file        files to use for"
 306                                 " random number input\n");
 307                 BIO_printf(bio_err, " -engine e         use engine e, "
 308                                 "possibly a hardware device\n");
 309                 goto end;
 310                 }
 311
 312         ERR_load_crypto_strings();
 313
 314         in=BIO_new(BIO_s_file());
 315         out=BIO_new(BIO_s_file());
 316         if ((in == NULL) || (out == NULL))
 317                 {
 318                 ERR_print_errors(bio_err);
 319                 goto end;
 320                 }
 321
 322         if (infile == NULL)
 323                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 324         else
 325                 {
 326                 if (BIO_read_filename(in,infile) <= 0)
 327                         {
 328                         perror(infile);
 329                         goto end;
 330                         }
 331                 }
 332         if (outfile == NULL)
 333                 {
 334                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 335 #ifdef OPENSSL_SYS_VMS
 336                 {
 337                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 338                 out = BIO_push(tmpbio, out);
 339                 }
 340 #endif
 341                 }
 342         else
 343                 {
 344                 if (BIO_write_filename(out,outfile) <= 0)
 345                         {
 346                         perror(outfile);
 347                         goto end;
 348                         }
 349                 }
 350
 351         e = setup_engine(bio_err, engine, 0);
 352
 353         if (list_curves)
 354                 {
 355                 EC_builtin_curve *curves = NULL;
 356                 size_t crv_len = 0;
 357                 size_t n = 0;
 358                 size_t len;
 359
 360                 crv_len = EC_get_builtin_curves(NULL, 0);
 361
 362                 curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
 363
 364                 if (curves == NULL)
 365                         goto end;
 366
 367                 if (!EC_get_builtin_curves(curves, crv_len))
 368                         {
 369                         OPENSSL_free(curves);
 370                         goto end;
 371                         }
 372
 373
 374                 for (n = 0; n < crv_len; n++)
 375                         {
 376                         const char *comment;
 377                         const char *sname;
 378                         comment = curves[n].comment;
 379                         sname   = OBJ_nid2sn(curves[n].nid);
 380                         if (comment == NULL)
 381                                 comment = "CURVE DESCRIPTION NOT AVAILABLE";
 382                         if (sname == NULL)
 383                                 sname = "";
 384
 385                         len = BIO_printf(out, "  %-10s: ", sname);
 386                         if (len + strlen(comment) > 80)
 387                                 BIO_printf(out, "\n%80s\n", comment);
 388                         else
 389                                 BIO_printf(out, "%s\n", comment);
 390                         }
 391
 392                 OPENSSL_free(curves);
 393                 ret = 0;
 394                 goto end;
 395                 }
 396
 397         if (curve_name != NULL)
 398                 {
 399                 int nid = OBJ_sn2nid(curve_name);
 400
 401                 if (nid == 0)
 402                         {
 403                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 404                                 curve_name);
 405                         goto end;
 406                         }
 407
 408                 group = EC_GROUP_new_by_nid(nid);
 409                 if (group == NULL)
 410                         {
 411                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 412                                 curve_name);
 413                         goto end;
 414                         }
 415                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 416                 EC_GROUP_set_point_conversion_form(group, form);
 417                 }
 418         else if (informat == FORMAT_ASN1)
 419                 {
 420                 group = d2i_ECPKParameters_bio(in, NULL);
 421                 }
 422         else if (informat == FORMAT_PEM)
 423                 {
 424                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 425                 }
 426         else
 427                 {
 428                 BIO_printf(bio_err, "bad input format specified\n");
 429                 goto end;
 430                 }
 431
 432         if (group == NULL)
 433                 {
 434                 BIO_printf(bio_err,
 435                         "unable to load elliptic curve parameters\n");
 436                 ERR_print_errors(bio_err);
 437                 goto end;
 438                 }
 439
 440         if (new_form)
 441                 EC_GROUP_set_point_conversion_form(group, form);
 442
 443         if (new_asn1_flag)
 444                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 445
 446         if (no_seed)
 447                 {
 448                 EC_GROUP_set_seed(group, NULL, 0);
 449                 }
 450
 451         if (text)
 452                 {
 453                 if (!ECPKParameters_print(out, group, 0))
 454                         goto end;
 455                 }
 456
 457         if (check)
 458                 {
 459                 if (group == NULL)
 460                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 461                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 462                 if (!EC_GROUP_check(group, NULL))
 463                         {
 464                         BIO_printf(bio_err, "failed\n");
 465                         ERR_print_errors(bio_err);
 466                         }
 467                 else
 468                         BIO_printf(bio_err, "ok\n");
 469
 470                 }
 471
 472         if (C)
 473                 {
 474                 size_t  buf_len = 0, tmp_len = 0;
 475                 const EC_POINT *point;
 476                 int     is_prime, len = 0;
 477                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 478
 479                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 480                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 481                     (ec_order = BN_new()) == NULL ||
 482                     (ec_cofactor = BN_new()) == NULL )
 483                         {
 484                         perror("OPENSSL_malloc");
 485                         goto end;
 486                         }
 487
 488                 is_prime = (EC_METHOD_get_field_type(meth) ==
 489                         NID_X9_62_prime_field);
 490
 491                 if (is_prime)
 492                         {
 493                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 494                                 ec_b, NULL))
 495                                 goto end;
 496                         }
 497                 else
 498                         {
 499                         /* TODO */
 500                         goto end;
 501                         }
 502
 503                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 504                         goto end;
 505                 if (!EC_POINT_point2bn(group, point,
 506                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 507                         NULL))
 508                         goto end;
 509                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 510                         goto end;
 511                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 512                         goto end;
 513
 514                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 515                         !ec_order || !ec_cofactor)
 516                         goto end;
 517
 518                 len = BN_num_bits(ec_order);
 519
 520                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 521                         buf_len = tmp_len;
 522                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 523                         buf_len = tmp_len;
 524                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 525                         buf_len = tmp_len;
 526                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 527                         buf_len = tmp_len;
 528                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 529                         buf_len = tmp_len;
 530                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 531                         buf_len = tmp_len;
 532
 533                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 534
 535                 if (buffer == NULL)
 536                         {
 537                         perror("OPENSSL_malloc");
 538                         goto end;
 539                         }
 540
 541                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 542                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 543                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 544                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 545                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 546                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 547                         buffer);
 548
 549                 BIO_printf(out, "\n\n");
 550
 551                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 552                 BIO_printf(out, "\tint ok=0;\n");
 553                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 554                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 555                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 556                                 "*tmp_3 = NULL;\n\n");
 557                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 558                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 559                                 "goto err;\n", len, len);
 560                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 561                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 562                                 "goto err;\n", len, len);
 563                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 564                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 565                                 "goto err;\n", len, len);
 566                 if (is_prime)
 567                         {
 568                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 569                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 570                                 "\n\t\tgoto err;\n\n");
 571                         }
 572                 else
 573                         {
 574                         /* TODO */
 575                         goto end;
 576                         }
 577                 BIO_printf(out, "\t/* build generator */\n");
 578                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 579                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 580                                 "\n\t\tgoto err;\n", len, len);
 581                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 582                                 "NULL, NULL);\n");
 583                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 584                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 585                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 586                                 "\n\t\tgoto err;\n", len, len);
 587                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 588                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 589                                 "\n\t\tgoto err;\n", len, len);
 590                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 591                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 592                 BIO_printf(out, "\n\tok=1;\n");
 593                 BIO_printf(out, "err:\n");
 594                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 595                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 596                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 597                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 598                 BIO_printf(out, "\tif (!ok)\n");
 599                 BIO_printf(out, "\t\t{\n");
 600                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 601                 BIO_printf(out, "\t\tgroup = NULL;\n");
 602                 BIO_printf(out, "\t\t}\n");
 603                 BIO_printf(out, "\treturn(group);\n\t}\n");
 604         }
 605
 606         if (!noout)
 607                 {
 608                 if (outformat == FORMAT_ASN1)
 609                         i = i2d_ECPKParameters_bio(out, group);
 610                 else if (outformat == FORMAT_PEM)
 611                         i = PEM_write_bio_ECPKParameters(out, group);
 612                 else
 613                         {
 614                         BIO_printf(bio_err,"bad output format specified for"
 615                                 " outfile\n");
 616                         goto end;
 617                         }
 618                 if (!i)
 619                         {
 620                         BIO_printf(bio_err, "unable to write elliptic "
 621                                 "curve parameters\n");
 622                         ERR_print_errors(bio_err);
 623                         goto end;
 624                         }
 625                 }
 626
 627         if (need_rand)
 628                 {
 629                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 630                 if (inrand != NULL)
 631                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 632                                 app_RAND_load_files(inrand));
 633                 }
 634
 635         if (genkey)
 636                 {
 637                 EC_KEY *eckey = EC_KEY_new();
 638
 639                 if (eckey == NULL)
 640                         goto end;
 641
 642                 assert(need_rand);
 643
 644                 eckey->group = group;
 645
 646                 if (!EC_KEY_generate_key(eckey))
 647                         {
 648                         eckey->group = NULL;
 649                         EC_KEY_free(eckey);
 650                         goto end;
 651                         }
 652                 if (outformat == FORMAT_ASN1)
 653                         i = i2d_ECPrivateKey_bio(out, eckey);
 654                 else if (outformat == FORMAT_PEM)
 655                         i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
 656                                 NULL, 0, NULL, NULL);
 657                 else
 658                         {
 659                         BIO_printf(bio_err, "bad output format specified "
 660                                 "for outfile\n");
 661                         eckey->group = NULL;
 662                         EC_KEY_free(eckey);
 663                         goto end;
 664                         }
 665                 eckey->group = NULL;
 666                 EC_KEY_free(eckey);
 667                 }
 668
 669         if (need_rand)
 670                 app_RAND_write_file(NULL, bio_err);
 671
 672         ret=0;
 673 end:
 674         if (ec_p)
 675                 BN_free(ec_p);
 676         if (ec_a)
 677                 BN_free(ec_a);
 678         if (ec_b)
 679                 BN_free(ec_b);
 680         if (ec_gen)
 681                 BN_free(ec_gen);
 682         if (ec_order)
 683                 BN_free(ec_order);
 684         if (ec_cofactor)
 685                 BN_free(ec_cofactor);
 686         if (buffer)
 687                 OPENSSL_free(buffer);
 688         if (in != NULL)
 689                 BIO_free(in);
 690         if (out != NULL)
 691                 BIO_free_all(out);
 692         if (group != NULL)
 693                 EC_GROUP_free(group);
 694         apps_shutdown();
 695         EXIT(ret);
 696 }
 697
 698 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 699         int len, unsigned char *buffer)
 700         {
 701         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 702         if (BN_is_zero(in))
 703                 BIO_printf(out, "\n\t0x00");
 704         else
 705                 {
 706                 int i, l;
 707
 708                 l = BN_bn2bin(in, buffer);
 709                 for (i=0; i<l-1; i++)
 710                         {
 711                         if ((i%12) == 0)
 712                                 BIO_printf(out, "\n\t");
 713                         BIO_printf(out, "0x%02X,", buffer[i]);
 714                         }
 715                 if ((i%12) == 0)
 716                         BIO_printf(out, "\n\t");
 717                 BIO_printf(out, "0x%02X", buffer[i]);
 718                 }
 719         BIO_printf(out, "\n\t};\n\n");
 720         return 1;
 721         }
 722 #endif