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
 106  * -text
 107  * -check                 - validate the ec parameters
 108  * -C
 109  * -noout
 110  * -name file             - use the ecparameters with 'short name' name
 111  * -list_curves           - prints a list of all currently available curve
 112  *                          'short names' and exits
 113  * -conv_form                  - specifies the point conversion form
 114  *                          possible values: compressed
 115  *                                           uncompressed (default)
 116  *                                           hybrid
 117  * -param_enc             - specifies the way the ec parameters are encoded
 118  *                          in the asn1 der encoding
 119  *                          possilbe values: named_curve (default)
 120  *                                           explicit
 121  * -no_seed               - if 'explicit' parameters are choosen do not
 122  *                          use the seed
 123  * -genkey                - generates a ec private key
 124  * -rand file
 125  * -engine e              - use engine e, possible a hardware device
 126  */
 127
 128
 129 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 130
 131 int MAIN(int, char **);
 132
 133 int MAIN(int argc, char **argv)
 134         {
 135         EC_GROUP *group = NULL;
 136         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 137         int     new_form = 0;
 138         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 139         int     new_asn1_flag = 0;
 140         char    *curve_name = NULL, *inrand = NULL;
 141         int     list_curves = 0, no_seed = 0, check = 0,
 142                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 143         char    *infile = NULL, *outfile = NULL, *prog;
 144         BIO     *in = NULL, *out = NULL;
 145         int     informat, outformat, noout = 0, C = 0, ret = 1;
 146         ENGINE  *e = NULL;
 147         char    *engine = NULL;
 148
 149         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 150                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 151         unsigned char *buffer = NULL;
 152
 153         apps_startup();
 154
 155         if (bio_err == NULL)
 156                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 157                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 158
 159         if (!load_config(bio_err, NULL))
 160                 goto end;
 161
 162         informat=FORMAT_PEM;
 163         outformat=FORMAT_PEM;
 164
 165         prog=argv[0];
 166         argc--;
 167         argv++;
 168         while (argc >= 1)
 169                 {
 170                 if      (strcmp(*argv,"-inform") == 0)
 171                         {
 172                         if (--argc < 1) goto bad;
 173                         informat=str2fmt(*(++argv));
 174                         }
 175                 else if (strcmp(*argv,"-outform") == 0)
 176                         {
 177                         if (--argc < 1) goto bad;
 178                         outformat=str2fmt(*(++argv));
 179                         }
 180                 else if (strcmp(*argv,"-in") == 0)
 181                         {
 182                         if (--argc < 1) goto bad;
 183                         infile= *(++argv);
 184                         }
 185                 else if (strcmp(*argv,"-out") == 0)
 186                         {
 187                         if (--argc < 1) goto bad;
 188                         outfile= *(++argv);
 189                         }
 190                 else if (strcmp(*argv,"-text") == 0)
 191                         text = 1;
 192                 else if (strcmp(*argv,"-C") == 0)
 193                         C = 1;
 194                 else if (strcmp(*argv,"-check") == 0)
 195                         check = 1;
 196                 else if (strcmp (*argv, "-name") == 0)
 197                         {
 198                         if (--argc < 1)
 199                                 goto bad;
 200                         curve_name = *(++argv);
 201                         }
 202                 else if (strcmp(*argv, "-list_curves") == 0)
 203                         list_curves = 1;
 204                 else if (strcmp(*argv, "-conv_form") == 0)
 205                         {
 206                         if (--argc < 1)
 207                                 goto bad;
 208                         ++argv;
 209                         new_form = 1;
 210                         if (strcmp(*argv, "compressed") == 0)
 211                                 form = POINT_CONVERSION_COMPRESSED;
 212                         else if (strcmp(*argv, "uncompressed") == 0)
 213                                 form = POINT_CONVERSION_UNCOMPRESSED;
 214                         else if (strcmp(*argv, "hybrid") == 0)
 215                                 form = POINT_CONVERSION_HYBRID;
 216                         else
 217                                 goto bad;
 218                         }
 219                 else if (strcmp(*argv, "-param_enc") == 0)
 220                         {
 221                         if (--argc < 1)
 222                                 goto bad;
 223                         ++argv;
 224                         new_asn1_flag = 1;
 225                         if (strcmp(*argv, "named_curve") == 0)
 226                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 227                         else if (strcmp(*argv, "explicit") == 0)
 228                                 asn1_flag = 0;
 229                         else
 230                                 goto bad;
 231                         }
 232                 else if (strcmp(*argv, "-no_seed") == 0)
 233                         no_seed = 1;
 234                 else if (strcmp(*argv, "-noout") == 0)
 235                         noout=1;
 236                 else if (strcmp(*argv,"-genkey") == 0)
 237                         {
 238                         genkey=1;
 239                         need_rand=1;
 240                         }
 241                 else if (strcmp(*argv, "-rand") == 0)
 242                         {
 243                         if (--argc < 1) goto bad;
 244                         inrand= *(++argv);
 245                         need_rand=1;
 246                         }
 247                 else if(strcmp(*argv, "-engine") == 0)
 248                         {
 249                         if (--argc < 1) goto bad;
 250                         engine = *(++argv);
 251                         }
 252                 else
 253                         {
 254                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 255                         badops=1;
 256                         break;
 257                         }
 258                 argc--;
 259                 argv++;
 260                 }
 261
 262         if (badops)
 263                 {
 264 bad:
 265                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 266                 BIO_printf(bio_err, "where options are\n");
 267                 BIO_printf(bio_err, " -inform arg             input format - "
 268                                 "default PEM (DER or PEM)\n");
 269                 BIO_printf(bio_err, " -outform arg            output format - "
 270                                 "default PEM\n");
 271                 BIO_printf(bio_err, " -in  arg                input file  - "
 272                                 "default stdin\n");
 273                 BIO_printf(bio_err, " -out arg                output file - "
 274                                 "default stdout\n");
 275                 BIO_printf(bio_err, " -noout                  do not print the "
 276                                 "ec parameter\n");
 277                 BIO_printf(bio_err, " -text                   print the ec "
 278                                 "parameters in text form\n");
 279                 BIO_printf(bio_err, " -check                  validate the ec "
 280                                 "parameters\n");
 281                 BIO_printf(bio_err, " -C                      print a 'C' "
 282                                 "function creating the parameters\n");
 283                 BIO_printf(bio_err, " -name arg               use the "
 284                                 "ec parameters with 'short name' name\n");
 285                 BIO_printf(bio_err, " -list_curves            prints a list of "
 286                                 "all currently available curve\n");
 287                 BIO_printf(bio_err, "                         'short names'\n");
 288                 BIO_printf(bio_err, " -conv_form arg          specifies the "
 289                                 "point conversion form \n");
 290                 BIO_printf(bio_err, "                         possible values:"
 291                                 " compressed\n");
 292                 BIO_printf(bio_err, "                                         "
 293                                 " uncompressed (default)\n");
 294                 BIO_printf(bio_err, "                                         "
 295                                 " hybrid\n");
 296                 BIO_printf(bio_err, " -param_enc arg          specifies the way"
 297                                 " the ec parameters are encoded\n");
 298                 BIO_printf(bio_err, "                         in the asn1 der "
 299                                 "encoding\n");
 300                 BIO_printf(bio_err, "                         possilbe values:"
 301                                 " named_curve (default)\n");
 302                 BIO_printf(bio_err,"                                      "
 303                                 "    explicit\n");
 304                 BIO_printf(bio_err, " -no_seed                if 'explicit'"
 305                                 " parameters are choosen do not\n");
 306                 BIO_printf(bio_err, "                         use the seed\n");
 307                 BIO_printf(bio_err, " -genkey                 generate ec"
 308                                 " key\n");
 309                 BIO_printf(bio_err, " -rand file              files to use for"
 310                                 " random number input\n");
 311                 BIO_printf(bio_err, " -engine e               use engine e, "
 312                                 "possible a hardware device\n");
 313                 goto end;
 314                 }
 315
 316         ERR_load_crypto_strings();
 317
 318         in=BIO_new(BIO_s_file());
 319         out=BIO_new(BIO_s_file());
 320         if ((in == NULL) || (out == NULL))
 321                 {
 322                 ERR_print_errors(bio_err);
 323                 goto end;
 324                 }
 325
 326         if (infile == NULL)
 327                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 328         else
 329                 {
 330                 if (BIO_read_filename(in,infile) <= 0)
 331                         {
 332                         perror(infile);
 333                         goto end;
 334                         }
 335                 }
 336         if (outfile == NULL)
 337                 {
 338                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 339 #ifdef OPENSSL_SYS_VMS
 340                 {
 341                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 342                 out = BIO_push(tmpbio, out);
 343                 }
 344 #endif
 345                 }
 346         else
 347                 {
 348                 if (BIO_write_filename(out,outfile) <= 0)
 349                         {
 350                         perror(outfile);
 351                         goto end;
 352                         }
 353                 }
 354
 355         e = setup_engine(bio_err, engine, 0);
 356
 357         if (list_curves)
 358                 {
 359                 int counter=0;
 360
 361                 for (;;)
 362                         {
 363                         const char *comment;
 364                         const char *sname;
 365                         int len, nid = ec_group_index2nid(counter++);
 366                         if (!nid)
 367                                 break;
 368                         comment = EC_GROUP_get0_comment(nid);
 369                         sname   = OBJ_nid2sn(nid);
 370                         if (comment == NULL)
 371                                 comment = "";
 372                         if (sname == NULL)
 373                                 sname = "";
 374
 375                         len = BIO_printf(out, "  %-10s: ", sname);
 376                         if (len + strlen(comment) > 80)
 377                                 BIO_printf(out, "\n%80s\n", comment);
 378                         else
 379                                 BIO_printf(out, "%s\n", comment);
 380                         }
 381
 382                 ret = 0;
 383                 goto end;
 384                 }
 385
 386         if (curve_name != NULL)
 387                 {
 388                 int nid = OBJ_sn2nid(curve_name);
 389
 390                 if (nid == 0)
 391                         {
 392                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 393                                 curve_name);
 394                         goto end;
 395                         }
 396
 397                 group = EC_GROUP_new_by_nid(nid);
 398                 if (group == NULL)
 399                         {
 400                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 401                                 curve_name);
 402                         goto end;
 403                         }
 404                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 405                 EC_GROUP_set_point_conversion_form(group, form);
 406                 }
 407         else if (informat == FORMAT_ASN1)
 408                 {
 409                 group = d2i_ECPKParameters_bio(in, NULL);
 410                 }
 411         else if (informat == FORMAT_PEM)
 412                 {
 413                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 414                 }
 415         else
 416                 {
 417                 BIO_printf(bio_err, "bad input format specified\n");
 418                 goto end;
 419                 }
 420
 421         if (group == NULL)
 422                 {
 423                 BIO_printf(bio_err,
 424                         "unable to load elliptic curve parameters\n");
 425                 ERR_print_errors(bio_err);
 426                 goto end;
 427                 }
 428
 429         if (new_form)
 430                 EC_GROUP_set_point_conversion_form(group, form);
 431
 432         if (new_asn1_flag)
 433                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 434
 435         if (no_seed)
 436                 {
 437                 EC_GROUP_set_seed(group, NULL, 0);
 438                 }
 439
 440         if (text)
 441                 {
 442                 if (!ECPKParameters_print(out, group, 0))
 443                         goto end;
 444                 }
 445
 446         if (check)
 447                 {
 448                 if (group == NULL)
 449                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 450                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 451                 if (!EC_GROUP_check(group, NULL))
 452                         {
 453                         BIO_printf(bio_err, "failed\n");
 454                         ERR_print_errors(bio_err);
 455                         }
 456                 else
 457                         BIO_printf(bio_err, "ok\n");
 458
 459                 }
 460
 461         if (C)
 462                 {
 463                 size_t  buf_len = 0, tmp_len = 0;
 464                 const EC_POINT *point;
 465                 int     is_prime, len = 0;
 466                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 467
 468                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 469                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 470                     (ec_order = BN_new()) == NULL ||
 471                     (ec_cofactor = BN_new()) == NULL )
 472                         {
 473                         perror("OPENSSL_malloc");
 474                         goto end;
 475                         }
 476
 477                 is_prime = (EC_METHOD_get_field_type(meth) ==
 478                         NID_X9_62_prime_field);
 479
 480                 if (is_prime)
 481                         {
 482                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 483                                 ec_b, NULL))
 484                                 goto end;
 485                         }
 486                 else
 487                         {
 488                         /* TODO */
 489                         goto end;
 490                         }
 491
 492                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 493                         goto end;
 494                 if (!EC_POINT_point2bn(group, point,
 495                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 496                         NULL))
 497                         goto end;
 498                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 499                         goto end;
 500                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 501                         goto end;
 502
 503                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 504                         !ec_order || !ec_cofactor)
 505                         goto end;
 506
 507                 len = BN_num_bits(ec_order);
 508
 509                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 510                         buf_len = tmp_len;
 511                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 512                         buf_len = tmp_len;
 513                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 514                         buf_len = tmp_len;
 515                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 516                         buf_len = tmp_len;
 517                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 518                         buf_len = tmp_len;
 519                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 520                         buf_len = tmp_len;
 521
 522                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 523
 524                 if (buffer == NULL)
 525                         {
 526                         perror("OPENSSL_malloc");
 527                         goto end;
 528                         }
 529
 530                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 531                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 532                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 533                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 534                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 535                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 536                         buffer);
 537
 538                 BIO_printf(out, "\n\n");
 539
 540                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 541                 BIO_printf(out, "\tint ok=0;\n");
 542                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 543                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 544                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 545                                 "*tmp_3 = NULL;\n\n");
 546                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 547                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 548                                 "goto err;\n", len, len);
 549                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 550                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 551                                 "goto err;\n", len, len);
 552                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 553                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 554                                 "goto err;\n", len, len);
 555                 if (is_prime)
 556                         {
 557                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 558                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 559                                 "\n\t\tgoto err;\n\n");
 560                         }
 561                 else
 562                         {
 563                         /* TODO */
 564                         goto end;
 565                         }
 566                 BIO_printf(out, "\t/* build generator */\n");
 567                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 568                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 569                                 "\n\t\tgoto err;\n", len, len);
 570                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 571                                 "NULL, NULL);\n");
 572                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 573                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 574                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 575                                 "\n\t\tgoto err;\n", len, len);
 576                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 577                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 578                                 "\n\t\tgoto err;\n", len, len);
 579                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 580                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 581                 BIO_printf(out, "\n\tok=1;\n");
 582                 BIO_printf(out, "err:\n");
 583                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 584                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 585                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 586                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 587                 BIO_printf(out, "\tif (!ok)\n");
 588                 BIO_printf(out, "\t\t{\n");
 589                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 590                 BIO_printf(out, "\t\tgroup = NULL;\n");
 591                 BIO_printf(out, "\t\t}\n");
 592                 BIO_printf(out, "\treturn(group);\n\t}\n");
 593         }
 594
 595         if (!noout)
 596                 {
 597                 if (outformat == FORMAT_ASN1)
 598                         i = i2d_ECPKParameters_bio(out, group);
 599                 else if (outformat == FORMAT_PEM)
 600                         i = PEM_write_bio_ECPKParameters(out, group);
 601                 else
 602                         {
 603                         BIO_printf(bio_err,"bad output format specified for"
 604                                 " outfile\n");
 605                         goto end;
 606                         }
 607                 if (!i)
 608                         {
 609                         BIO_printf(bio_err, "unable to write elliptic "
 610                                 "curve parameters\n");
 611                         ERR_print_errors(bio_err);
 612                         goto end;
 613                         }
 614                 }
 615
 616         if (need_rand)
 617                 {
 618                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 619                 if (inrand != NULL)
 620                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 621                                 app_RAND_load_files(inrand));
 622                 }
 623
 624         if (genkey)
 625                 {
 626                 EC_KEY *eckey = EC_KEY_new();
 627
 628                 if (eckey == NULL)
 629                         goto end;
 630
 631                 assert(need_rand);
 632
 633                 eckey->group = group;
 634
 635                 if (!EC_KEY_generate_key(eckey))
 636                         {
 637                         eckey->group = NULL;
 638                         EC_KEY_free(eckey);
 639                         goto end;
 640                         }
 641                 if (outformat == FORMAT_ASN1)
 642                         i = i2d_ECPrivateKey_bio(out, eckey);
 643                 else if (outformat == FORMAT_PEM)
 644                         i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
 645                                 NULL, 0, NULL, NULL);
 646                 else
 647                         {
 648                         BIO_printf(bio_err, "bad output format specified "
 649                                 "for outfile\n");
 650                         eckey->group = NULL;
 651                         EC_KEY_free(eckey);
 652                         goto end;
 653                         }
 654                 eckey->group = NULL;
 655                 EC_KEY_free(eckey);
 656                 }
 657
 658         if (need_rand)
 659                 app_RAND_write_file(NULL, bio_err);
 660
 661         ret=0;
 662 end:
 663         if (ec_p)
 664                 BN_free(ec_p);
 665         if (ec_a)
 666                 BN_free(ec_a);
 667         if (ec_b)
 668                 BN_free(ec_b);
 669         if (ec_gen)
 670                 BN_free(ec_gen);
 671         if (ec_order)
 672                 BN_free(ec_order);
 673         if (ec_cofactor)
 674                 BN_free(ec_cofactor);
 675         if (buffer)
 676                 OPENSSL_free(buffer);
 677         if (in != NULL)
 678                 BIO_free(in);
 679         if (out != NULL)
 680                 BIO_free_all(out);
 681         if (group != NULL)
 682                 EC_GROUP_free(group);
 683         apps_shutdown();
 684         EXIT(ret);
 685 }
 686
 687 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 688         int len, unsigned char *buffer)
 689         {
 690         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 691         if (BN_is_zero(in))
 692                 BIO_printf(out, "\n\t0x00");
 693         else
 694                 {
 695                 int i, l;
 696
 697                 l = BN_bn2bin(in, buffer);
 698                 for (i=0; i<l-1; i++)
 699                         {
 700                         if ((i%12) == 0)
 701                                 BIO_printf(out, "\n\t");
 702                         BIO_printf(out, "0x%02X,", buffer[i]);
 703                         }
 704                 if ((i%12) == 0)
 705                         BIO_printf(out, "\n\t");
 706                 BIO_printf(out, "0x%02X", buffer[i]);
 707                 }
 708         BIO_printf(out, "\n\t};\n\n");
 709         return 1;
 710         }
 711 #endif