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  * The elliptic curve binary polynomial software is originally written by
  68  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  69  *
  70  */
  71 #ifndef OPENSSL_NO_EC
  72 #include <assert.h>
  73 #include <stdio.h>
  74 #include <stdlib.h>
  75 #include <time.h>
  76 #include <string.h>
  77 #include "apps.h"
  78 #include <openssl/bio.h>
  79 #include <openssl/err.h>
  80 #include <openssl/bn.h>
  81 #include <openssl/ec.h>
  82 #include <openssl/x509.h>
  83 #include <openssl/pem.h>
  84
  85 #undef PROG
  86 #define PROG    ecparam_main
  87
  88 /* -inform arg      - input format - default PEM (DER or PEM)
  89  * -outform arg     - output format - default PEM
  90  * -in  arg         - input file  - default stdin
  91  * -out arg         - output file - default stdout
  92  * -noout           - do not print the ec parameter
  93  * -text            - print the ec parameters in text form
  94  * -check           - validate the ec parameters
  95  * -C               - print a 'C' function creating the parameters
  96  * -name arg        - use the ec parameters with 'short name' name
  97  * -list_curves     - prints a list of all currently available curve 'short names'
  98  * -conv_form arg   - specifies the point conversion form
  99  *                  - possible values: compressed
 100  *                                     uncompressed (default)
 101  *                                     hybrid
 102  * -param_enc arg   - specifies the way the ec parameters are encoded
 103  *                    in the asn1 der encoding
 104  *                    possible values: named_curve (default)
 105  *                                     explicit
 106  * -no_seed         - if 'explicit' parameters are choosen do not use the seed
 107  * -genkey          - generate ec key
 108  * -rand file       - files to use for random number input
 109  * -engine e        - use engine e, possibly a hardware device
 110  */
 111
 112
 113 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 114
 115 int MAIN(int, char **);
 116
 117 int MAIN(int argc, char **argv)
 118         {
 119         EC_GROUP *group = NULL;
 120         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 121         int     new_form = 0;
 122         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 123         int     new_asn1_flag = 0;
 124         char    *curve_name = NULL, *inrand = NULL;
 125         int     list_curves = 0, no_seed = 0, check = 0,
 126                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 127         char    *infile = NULL, *outfile = NULL, *prog;
 128         BIO     *in = NULL, *out = NULL;
 129         int     informat, outformat, noout = 0, C = 0, ret = 1;
 130         ENGINE  *e = NULL;
 131         char    *engine = NULL;
 132
 133         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 134                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 135         unsigned char *buffer = NULL;
 136
 137         apps_startup();
 138
 139         if (bio_err == NULL)
 140                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 141                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 142
 143         if (!load_config(bio_err, NULL))
 144                 goto end;
 145
 146         informat=FORMAT_PEM;
 147         outformat=FORMAT_PEM;
 148
 149         prog=argv[0];
 150         argc--;
 151         argv++;
 152         while (argc >= 1)
 153                 {
 154                 if      (strcmp(*argv,"-inform") == 0)
 155                         {
 156                         if (--argc < 1) goto bad;
 157                         informat=str2fmt(*(++argv));
 158                         }
 159                 else if (strcmp(*argv,"-outform") == 0)
 160                         {
 161                         if (--argc < 1) goto bad;
 162                         outformat=str2fmt(*(++argv));
 163                         }
 164                 else if (strcmp(*argv,"-in") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         infile= *(++argv);
 168                         }
 169                 else if (strcmp(*argv,"-out") == 0)
 170                         {
 171                         if (--argc < 1) goto bad;
 172                         outfile= *(++argv);
 173                         }
 174                 else if (strcmp(*argv,"-text") == 0)
 175                         text = 1;
 176                 else if (strcmp(*argv,"-C") == 0)
 177                         C = 1;
 178                 else if (strcmp(*argv,"-check") == 0)
 179                         check = 1;
 180                 else if (strcmp (*argv, "-name") == 0)
 181                         {
 182                         if (--argc < 1)
 183                                 goto bad;
 184                         curve_name = *(++argv);
 185                         }
 186                 else if (strcmp(*argv, "-list_curves") == 0)
 187                         list_curves = 1;
 188                 else if (strcmp(*argv, "-conv_form") == 0)
 189                         {
 190                         if (--argc < 1)
 191                                 goto bad;
 192                         ++argv;
 193                         new_form = 1;
 194                         if (strcmp(*argv, "compressed") == 0)
 195                                 form = POINT_CONVERSION_COMPRESSED;
 196                         else if (strcmp(*argv, "uncompressed") == 0)
 197                                 form = POINT_CONVERSION_UNCOMPRESSED;
 198                         else if (strcmp(*argv, "hybrid") == 0)
 199                                 form = POINT_CONVERSION_HYBRID;
 200                         else
 201                                 goto bad;
 202                         }
 203                 else if (strcmp(*argv, "-param_enc") == 0)
 204                         {
 205                         if (--argc < 1)
 206                                 goto bad;
 207                         ++argv;
 208                         new_asn1_flag = 1;
 209                         if (strcmp(*argv, "named_curve") == 0)
 210                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 211                         else if (strcmp(*argv, "explicit") == 0)
 212                                 asn1_flag = 0;
 213                         else
 214                                 goto bad;
 215                         }
 216                 else if (strcmp(*argv, "-no_seed") == 0)
 217                         no_seed = 1;
 218                 else if (strcmp(*argv, "-noout") == 0)
 219                         noout=1;
 220                 else if (strcmp(*argv,"-genkey") == 0)
 221                         {
 222                         genkey=1;
 223                         need_rand=1;
 224                         }
 225                 else if (strcmp(*argv, "-rand") == 0)
 226                         {
 227                         if (--argc < 1) goto bad;
 228                         inrand= *(++argv);
 229                         need_rand=1;
 230                         }
 231                 else if(strcmp(*argv, "-engine") == 0)
 232                         {
 233                         if (--argc < 1) goto bad;
 234                         engine = *(++argv);
 235                         }
 236                 else
 237                         {
 238                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 239                         badops=1;
 240                         break;
 241                         }
 242                 argc--;
 243                 argv++;
 244                 }
 245
 246         if (badops)
 247                 {
 248 bad:
 249                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 250                 BIO_printf(bio_err, "where options are\n");
 251                 BIO_printf(bio_err, " -inform arg       input format - "
 252                                 "default PEM (DER or PEM)\n");
 253                 BIO_printf(bio_err, " -outform arg      output format - "
 254                                 "default PEM\n");
 255                 BIO_printf(bio_err, " -in  arg          input file  - "
 256                                 "default stdin\n");
 257                 BIO_printf(bio_err, " -out arg          output file - "
 258                                 "default stdout\n");
 259                 BIO_printf(bio_err, " -noout            do not print the "
 260                                 "ec parameter\n");
 261                 BIO_printf(bio_err, " -text             print the ec "
 262                                 "parameters in text form\n");
 263                 BIO_printf(bio_err, " -check            validate the ec "
 264                                 "parameters\n");
 265                 BIO_printf(bio_err, " -C                print a 'C' "
 266                                 "function creating the parameters\n");
 267                 BIO_printf(bio_err, " -name arg         use the "
 268                                 "ec parameters with 'short name' name\n");
 269                 BIO_printf(bio_err, " -list_curves      prints a list of "
 270                                 "all currently available curve 'short names'\n");
 271                 BIO_printf(bio_err, " -conv_form arg    specifies the "
 272                                 "point conversion form \n");
 273                 BIO_printf(bio_err, "                   possible values:"
 274                                 " compressed\n");
 275                 BIO_printf(bio_err, "                                   "
 276                                 " uncompressed (default)\n");
 277                 BIO_printf(bio_err, "                                   "
 278                                 " hybrid\n");
 279                 BIO_printf(bio_err, " -param_enc arg    specifies the way"
 280                                 " the ec parameters are encoded\n");
 281                 BIO_printf(bio_err, "                   in the asn1 der "
 282                                 "encoding\n");
 283                 BIO_printf(bio_err, "                   possible values:"
 284                                 " named_curve (default)\n");
 285                 BIO_printf(bio_err, "                                   "
 286                                 " explicit\n");
 287                 BIO_printf(bio_err, " -no_seed          if 'explicit'"
 288                                 " parameters are choosen do not"
 289                                 " use the seed\n");
 290                 BIO_printf(bio_err, " -genkey           generate ec"
 291                                 " key\n");
 292                 BIO_printf(bio_err, " -rand file        files to use for"
 293                                 " random number input\n");
 294                 BIO_printf(bio_err, " -engine e         use engine e, "
 295                                 "possibly a hardware device\n");
 296                 goto end;
 297                 }
 298
 299         ERR_load_crypto_strings();
 300
 301         in=BIO_new(BIO_s_file());
 302         out=BIO_new(BIO_s_file());
 303         if ((in == NULL) || (out == NULL))
 304                 {
 305                 ERR_print_errors(bio_err);
 306                 goto end;
 307                 }
 308
 309         if (infile == NULL)
 310                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 311         else
 312                 {
 313                 if (BIO_read_filename(in,infile) <= 0)
 314                         {
 315                         perror(infile);
 316                         goto end;
 317                         }
 318                 }
 319         if (outfile == NULL)
 320                 {
 321                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 322 #ifdef OPENSSL_SYS_VMS
 323                 {
 324                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 325                 out = BIO_push(tmpbio, out);
 326                 }
 327 #endif
 328                 }
 329         else
 330                 {
 331                 if (BIO_write_filename(out,outfile) <= 0)
 332                         {
 333                         perror(outfile);
 334                         goto end;
 335                         }
 336                 }
 337
 338         e = setup_engine(bio_err, engine, 0);
 339
 340         if (list_curves)
 341                 {
 342                 EC_builtin_curve *curves = NULL;
 343                 size_t crv_len = 0;
 344                 size_t n = 0;
 345
 346                 crv_len = EC_get_builtin_curves(NULL, 0);
 347
 348                 curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
 349
 350                 if (curves == NULL)
 351                         goto end;
 352
 353                 if (!EC_get_builtin_curves(curves, crv_len))
 354                         {
 355                         OPENSSL_free(curves);
 356                         goto end;
 357                         }
 358
 359
 360                 for (n = 0; n < crv_len; n++)
 361                         {
 362                         const char *comment;
 363                         const char *sname;
 364                         comment = curves[n].comment;
 365                         sname   = OBJ_nid2sn(curves[n].nid);
 366                         if (comment == NULL)
 367                                 comment = "CURVE DESCRIPTION NOT AVAILABLE";
 368                         if (sname == NULL)
 369                                 sname = "";
 370
 371                         BIO_printf(out, "  %-10s: ", sname);
 372                         BIO_printf(out, "%s\n", comment);
 373                         }
 374
 375                 OPENSSL_free(curves);
 376                 ret = 0;
 377                 goto end;
 378                 }
 379
 380         if (curve_name != NULL)
 381                 {
 382                 int nid;
 383
 384                 /* workaround for the SECG curve names secp192r1
 385                  * and secp256r1 (which are the same as the curves
 386                  * prime192v1 and prime256v1 defined in X9.62)
 387                  */
 388                 if (!strcmp(curve_name, "secp192r1"))
 389                         {
 390                         BIO_printf(bio_err, "using curve name prime192v1 "
 391                                 "instead of secp192r1\n");
 392                         nid = NID_X9_62_prime192v1;
 393                         }
 394                 else if (!strcmp(curve_name, "secp256r1"))
 395                         {
 396                         BIO_printf(bio_err, "using curve name prime256v1 "
 397                                 "instead of secp256r1\n");
 398                         nid = NID_X9_62_prime256v1;
 399                         }
 400                 else
 401                         nid = OBJ_sn2nid(curve_name);
 402
 403                 if (nid == 0)
 404                         {
 405                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 406                                 curve_name);
 407                         goto end;
 408                         }
 409
 410                 group = EC_GROUP_new_by_nid(nid);
 411                 if (group == NULL)
 412                         {
 413                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 414                                 curve_name);
 415                         goto end;
 416                         }
 417                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 418                 EC_GROUP_set_point_conversion_form(group, form);
 419                 }
 420         else if (informat == FORMAT_ASN1)
 421                 {
 422                 group = d2i_ECPKParameters_bio(in, NULL);
 423                 }
 424         else if (informat == FORMAT_PEM)
 425                 {
 426                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 427                 }
 428         else
 429                 {
 430                 BIO_printf(bio_err, "bad input format specified\n");
 431                 goto end;
 432                 }
 433
 434         if (group == NULL)
 435                 {
 436                 BIO_printf(bio_err,
 437                         "unable to load elliptic curve parameters\n");
 438                 ERR_print_errors(bio_err);
 439                 goto end;
 440                 }
 441
 442         if (new_form)
 443                 EC_GROUP_set_point_conversion_form(group, form);
 444
 445         if (new_asn1_flag)
 446                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 447
 448         if (no_seed)
 449                 {
 450                 EC_GROUP_set_seed(group, NULL, 0);
 451                 }
 452
 453         if (text)
 454                 {
 455                 if (!ECPKParameters_print(out, group, 0))
 456                         goto end;
 457                 }
 458
 459         if (check)
 460                 {
 461                 if (group == NULL)
 462                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 463                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 464                 if (!EC_GROUP_check(group, NULL))
 465                         {
 466                         BIO_printf(bio_err, "failed\n");
 467                         ERR_print_errors(bio_err);
 468                         }
 469                 else
 470                         BIO_printf(bio_err, "ok\n");
 471
 472                 }
 473
 474         if (C)
 475                 {
 476                 size_t  buf_len = 0, tmp_len = 0;
 477                 const EC_POINT *point;
 478                 int     is_prime, len = 0;
 479                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 480
 481                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 482                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 483                     (ec_order = BN_new()) == NULL ||
 484                     (ec_cofactor = BN_new()) == NULL )
 485                         {
 486                         perror("OPENSSL_malloc");
 487                         goto end;
 488                         }
 489
 490                 is_prime = (EC_METHOD_get_field_type(meth) ==
 491                         NID_X9_62_prime_field);
 492
 493                 if (is_prime)
 494                         {
 495                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 496                                 ec_b, NULL))
 497                                 goto end;
 498                         }
 499                 else
 500                         {
 501                         /* TODO */
 502                         goto end;
 503                         }
 504
 505                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 506                         goto end;
 507                 if (!EC_POINT_point2bn(group, point,
 508                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 509                         NULL))
 510                         goto end;
 511                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 512                         goto end;
 513                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 514                         goto end;
 515
 516                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 517                         !ec_order || !ec_cofactor)
 518                         goto end;
 519
 520                 len = BN_num_bits(ec_order);
 521
 522                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 523                         buf_len = tmp_len;
 524                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 525                         buf_len = tmp_len;
 526                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 527                         buf_len = tmp_len;
 528                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 529                         buf_len = tmp_len;
 530                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 531                         buf_len = tmp_len;
 532                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 533                         buf_len = tmp_len;
 534
 535                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 536
 537                 if (buffer == NULL)
 538                         {
 539                         perror("OPENSSL_malloc");
 540                         goto end;
 541                         }
 542
 543                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 544                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 545                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 546                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 547                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 548                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 549                         buffer);
 550
 551                 BIO_printf(out, "\n\n");
 552
 553                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 554                 BIO_printf(out, "\tint ok=0;\n");
 555                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 556                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 557                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 558                                 "*tmp_3 = NULL;\n\n");
 559                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 560                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 561                                 "goto err;\n", len, len);
 562                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 563                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 564                                 "goto err;\n", len, len);
 565                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 566                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 567                                 "goto err;\n", len, len);
 568                 if (is_prime)
 569                         {
 570                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 571                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 572                                 "\n\t\tgoto err;\n\n");
 573                         }
 574                 else
 575                         {
 576                         /* TODO */
 577                         goto end;
 578                         }
 579                 BIO_printf(out, "\t/* build generator */\n");
 580                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 581                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 582                                 "\n\t\tgoto err;\n", len, len);
 583                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 584                                 "NULL, NULL);\n");
 585                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 586                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 587                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 588                                 "\n\t\tgoto err;\n", len, len);
 589                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 590                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 591                                 "\n\t\tgoto err;\n", len, len);
 592                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 593                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 594                 BIO_printf(out, "\n\tok=1;\n");
 595                 BIO_printf(out, "err:\n");
 596                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 597                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 598                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 599                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 600                 BIO_printf(out, "\tif (!ok)\n");
 601                 BIO_printf(out, "\t\t{\n");
 602                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 603                 BIO_printf(out, "\t\tgroup = NULL;\n");
 604                 BIO_printf(out, "\t\t}\n");
 605                 BIO_printf(out, "\treturn(group);\n\t}\n");
 606         }
 607
 608         if (!noout)
 609                 {
 610                 if (outformat == FORMAT_ASN1)
 611                         i = i2d_ECPKParameters_bio(out, group);
 612                 else if (outformat == FORMAT_PEM)
 613                         i = PEM_write_bio_ECPKParameters(out, group);
 614                 else
 615                         {
 616                         BIO_printf(bio_err,"bad output format specified for"
 617                                 " outfile\n");
 618                         goto end;
 619                         }
 620                 if (!i)
 621                         {
 622                         BIO_printf(bio_err, "unable to write elliptic "
 623                                 "curve parameters\n");
 624                         ERR_print_errors(bio_err);
 625                         goto end;
 626                         }
 627                 }
 628
 629         if (need_rand)
 630                 {
 631                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 632                 if (inrand != NULL)
 633                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 634                                 app_RAND_load_files(inrand));
 635                 }
 636
 637         if (genkey)
 638                 {
 639                 EC_KEY *eckey = EC_KEY_new();
 640
 641                 if (eckey == NULL)
 642                         goto end;
 643
 644                 assert(need_rand);
 645
 646                 eckey->group = group;
 647
 648                 if (!EC_KEY_generate_key(eckey))
 649                         {
 650                         eckey->group = NULL;
 651                         EC_KEY_free(eckey);
 652                         goto end;
 653                         }
 654                 if (outformat == FORMAT_ASN1)
 655                         i = i2d_ECPrivateKey_bio(out, eckey);
 656                 else if (outformat == FORMAT_PEM)
 657                         i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
 658                                 NULL, 0, NULL, NULL);
 659                 else
 660                         {
 661                         BIO_printf(bio_err, "bad output format specified "
 662                                 "for outfile\n");
 663                         eckey->group = NULL;
 664                         EC_KEY_free(eckey);
 665                         goto end;
 666                         }
 667                 eckey->group = NULL;
 668                 EC_KEY_free(eckey);
 669                 }
 670
 671         if (need_rand)
 672                 app_RAND_write_file(NULL, bio_err);
 673
 674         ret=0;
 675 end:
 676         if (ec_p)
 677                 BN_free(ec_p);
 678         if (ec_a)
 679                 BN_free(ec_a);
 680         if (ec_b)
 681                 BN_free(ec_b);
 682         if (ec_gen)
 683                 BN_free(ec_gen);
 684         if (ec_order)
 685                 BN_free(ec_order);
 686         if (ec_cofactor)
 687                 BN_free(ec_cofactor);
 688         if (buffer)
 689                 OPENSSL_free(buffer);
 690         if (in != NULL)
 691                 BIO_free(in);
 692         if (out != NULL)
 693                 BIO_free_all(out);
 694         if (group != NULL)
 695                 EC_GROUP_free(group);
 696         apps_shutdown();
 697         OPENSSL_EXIT(ret);
 698 }
 699
 700 static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 701         int len, unsigned char *buffer)
 702         {
 703         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 704         if (BN_is_zero(in))
 705                 BIO_printf(out, "\n\t0x00");
 706         else
 707                 {
 708                 int i, l;
 709
 710                 l = BN_bn2bin(in, buffer);
 711                 for (i=0; i<l-1; i++)
 712                         {
 713                         if ((i%12) == 0)
 714                                 BIO_printf(out, "\n\t");
 715                         BIO_printf(out, "0x%02X,", buffer[i]);
 716                         }
 717                 if ((i%12) == 0)
 718                         BIO_printf(out, "\n\t");
 719                 BIO_printf(out, "0x%02X", buffer[i]);
 720                 }
 721         BIO_printf(out, "\n\t};\n\n");
 722         return 1;
 723         }
 724 #endif