apps/ecparam.c

   1 /* apps/ecparam.c */
   2 /* ====================================================================
   3  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    openssl-core@openssl.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  * ====================================================================
  49  *
  50  * This product includes cryptographic software written by Eric Young
  51  * (eay@cryptsoft.com).  This product includes software written by Tim
  52  * Hudson (tjh@cryptsoft.com).
  53  *
  54  */
  55 #ifndef OPENSSL_NO_ECDSA
  56 #include <assert.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <time.h>
  60 #include <string.h>
  61 #include "apps.h"
  62 #include <openssl/bio.h>
  63 #include <openssl/err.h>
  64 #include <openssl/bn.h>
  65 #include <openssl/ec.h>
  66 #include <openssl/ecdsa.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/pem.h>
  69
  70 #undef PROG
  71 #define PROG    ecparam_main
  72
  73 /* -inform arg            - input format - default PEM (DER or PEM)
  74  * -outform arg           - output format - default PEM
  75  * -in arg                - input file  - default stdin
  76  * -out arg               - output file - default stdout
  77  * -noout
  78  * -text
  79  * -check                 - validate the ec parameters
  80  * -C
  81  * -noout
  82  * -name file             - use the ecparameters with 'short name' name
  83  * -list_curves           - prints a list of all currently available curve
  84  *                          'short names' and exits
  85  * -conv_form                  - specifies the point conversion form
  86  *                          possible values : compressed
  87  *                                            uncompressed (default)
  88  *                                            hybrid
  89  * -param_enc             - specifies the way the ec parameters are encoded
  90  *                          in the asn1 der encoding
  91  *                          possilbe values : named_curve (default)
  92  *                                            explicit
  93  * -no_seed               - if 'explicit' parameters are choosen do not
  94  *                          use the seed
  95  * -genkey                - generates a ecdsa private key
  96  * -rand file
  97  * -engine e              - use engine e, possible a hardware device
  98  */
  99
 100 static const char *curve_list[20] = {
 101         "prime192v1       - NIST recommended curve over a 192 bit prime field",
 102         "prime192v2       - 192 bit prime curve from the X9.62 draft",
 103         "prime192v3       - 192 bit prime curve from the X9.62 draft",
 104         "prime239v1       - 239 bit prime curve from the X9.62 draft",
 105         "prime239v2       - 239 bit prime curve from the X9.62 draft",
 106         "prime239v3       - 239 bit prime curve from the X9.62 draft",
 107         "prime256v1       - NIST recommended curve over a 256 bit prime field",
 108         "secp112r1        - SECG recommended curve over a 112 bit prime field",
 109         "secp112r2        - SECG recommended curve over a 112 bit prime field",
 110         "secp128r1        - SECG recommended curve over a 128 bit prime field",
 111         "secp128r2        - SECG recommended curve over a 128 bit prime field",
 112         "secp160k1        - SECG recommended curve over a 160 bit prime field",
 113         "secp160r1        - SECG recommended curve over a 160 bit prime field",
 114         "secp160r2        - SECG recommended curve over a 160 bit prime field",
 115         "secp192k1        - SECG recommended curve over a 192 bit prime field",
 116         "secp224k1        - SECG recommended curve over a 224 bit prime field",
 117         "secp224r1        - NIST recommended curve over a 224 bit prime field",
 118         "secp256k1        - SECG recommended curve over a 256 bit prime field",
 119         "secp384r1        - NIST recommended curve over a 384 bit prime field",
 120         "secp521r1        - NIST recommended curve over a 521 bit prime field"
 121 };
 122
 123 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 124
 125 int MAIN(int, char **);
 126
 127 int MAIN(int argc, char **argv)
 128         {
 129         EC_GROUP *group = NULL;
 130         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 131         int     new_form = 0;
 132         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 133         int     new_asn1_flag = 0;
 134         char    *curve_name = NULL, *inrand = NULL;
 135         int     list_curves = 0, no_seed = 0, check = 0,
 136                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 137         char    *infile = NULL, *outfile = NULL, *prog;
 138         BIO     *in = NULL, *out = NULL;
 139         int     informat, outformat, noout = 0, C = 0, ret = 1;
 140         ENGINE  *e = NULL;
 141         char    *engine = NULL;
 142
 143         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 144                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 145         unsigned char *buffer = NULL;
 146
 147         apps_startup();
 148
 149         if (bio_err == NULL)
 150                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 151                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 152
 153         if (!load_config(bio_err, NULL))
 154                 goto end;
 155
 156         informat=FORMAT_PEM;
 157         outformat=FORMAT_PEM;
 158
 159         prog=argv[0];
 160         argc--;
 161         argv++;
 162         while (argc >= 1)
 163                 {
 164                 if      (strcmp(*argv,"-inform") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         informat=str2fmt(*(++argv));
 168                         }
 169                 else if (strcmp(*argv,"-outform") == 0)
 170                         {
 171                         if (--argc < 1) goto bad;
 172                         outformat=str2fmt(*(++argv));
 173                         }
 174                 else if (strcmp(*argv,"-in") == 0)
 175                         {
 176                         if (--argc < 1) goto bad;
 177                         infile= *(++argv);
 178                         }
 179                 else if (strcmp(*argv,"-out") == 0)
 180                         {
 181                         if (--argc < 1) goto bad;
 182                         outfile= *(++argv);
 183                         }
 184                 else if (strcmp(*argv,"-text") == 0)
 185                         text = 1;
 186                 else if (strcmp(*argv,"-C") == 0)
 187                         C = 1;
 188                 else if (strcmp(*argv,"-check") == 0)
 189                         check = 1;
 190                 else if (strcmp (*argv, "-name") == 0)
 191                         {
 192                         if (--argc < 1)
 193                                 goto bad;
 194                         curve_name = *(++argv);
 195                         }
 196                 else if (strcmp(*argv, "-list_curves") == 0)
 197                         list_curves = 1;
 198                 else if (strcmp(*argv, "-conv_form") == 0)
 199                         {
 200                         if (--argc < 1)
 201                                 goto bad;
 202                         ++argv;
 203                         new_form = 1;
 204                         if (strcmp(*argv, "compressed") == 0)
 205                                 form = POINT_CONVERSION_COMPRESSED;
 206                         else if (strcmp(*argv, "uncompressed") == 0)
 207                                 form = POINT_CONVERSION_UNCOMPRESSED;
 208                         else if (strcmp(*argv, "hybrid") == 0)
 209                                 form = POINT_CONVERSION_HYBRID;
 210                         else
 211                                 goto bad;
 212                         }
 213                 else if (strcmp(*argv, "-param_enc") == 0)
 214                         {
 215                         if (--argc < 1)
 216                                 goto bad;
 217                         ++argv;
 218                         new_asn1_flag = 1;
 219                         if (strcmp(*argv, "named_curve") == 0)
 220                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 221                         else if (strcmp(*argv, "explicit") == 0)
 222                                 asn1_flag = 0;
 223                         else
 224                                 goto bad;
 225                         }
 226                 else if (strcmp(*argv, "-no_seed") == 0)
 227                         no_seed = 1;
 228                 else if (strcmp(*argv, "-noout") == 0)
 229                         noout=1;
 230                 else if (strcmp(*argv,"-genkey") == 0)
 231                         {
 232                         genkey=1;
 233                         need_rand=1;
 234                         }
 235                 else if (strcmp(*argv, "-rand") == 0)
 236                         {
 237                         if (--argc < 1) goto bad;
 238                         inrand= *(++argv);
 239                         need_rand=1;
 240                         }
 241                 else if(strcmp(*argv, "-engine") == 0)
 242                         {
 243                         if (--argc < 1) goto bad;
 244                         engine = *(++argv);
 245                         }
 246                 else
 247                         {
 248                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 249                         badops=1;
 250                         break;
 251                         }
 252                 argc--;
 253                 argv++;
 254                 }
 255
 256         if (badops)
 257                 {
 258 bad:
 259                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 260                 BIO_printf(bio_err, "where options are\n");
 261                 BIO_printf(bio_err, " -inform arg             input format - "
 262                                 "default PEM (DER or PEM)\n");
 263                 BIO_printf(bio_err, " -outform arg            output format - "
 264                                 "default PEM\n");
 265                 BIO_printf(bio_err, " -in  arg                input file  - "
 266                                 "default stdin\n");
 267                 BIO_printf(bio_err, " -out arg                output file - "
 268                                 "default stdout\n");
 269                 BIO_printf(bio_err, " -noout                  do not print the "
 270                                 "ec parameter\n");
 271                 BIO_printf(bio_err, " -text                   print the ec "
 272                                 "parameters in text form\n");
 273                 BIO_printf(bio_err, " -check                  validate the ec "
 274                                 "parameters\n");
 275                 BIO_printf(bio_err, " -C                      print a 'C' "
 276                                 "function creating the parameters\n");
 277                 BIO_printf(bio_err, " -name arg               use the "
 278                                 "ec parameters with 'short name' name\n");
 279                 BIO_printf(bio_err, " -list_curves            prints a list of "
 280                                 "all currently available curve\n");
 281                 BIO_printf(bio_err, "                         'short names'\n");
 282                 BIO_printf(bio_err, " -conv_form arg          specifies the "
 283                                 "point conversion form \n");
 284                 BIO_printf(bio_err, "                         possible values :"
 285                                 " compressed\n");
 286                 BIO_printf(bio_err, "                                          "
 287                                 " uncompressed (default)\n");
 288                 BIO_printf(bio_err, "                                          "
 289                                 " hybrid\n");
 290                 BIO_printf(bio_err, " -param_enc arg          specifies the way"
 291                                 " the ec parameters are encoded\n");
 292                 BIO_printf(bio_err, "                         in the asn1 der "
 293                                 "encoding\n");
 294                 BIO_printf(bio_err, "                         possilbe values :"
 295                                 " named_curve (default)\n");
 296                 BIO_printf(bio_err,"                                      "
 297                                 "     explicit\n");
 298                 BIO_printf(bio_err, " -no_seed                if 'explicit'"
 299                                 " parameters are choosen do not\n");
 300                 BIO_printf(bio_err, "                         use the seed\n");
 301                 BIO_printf(bio_err, " -genkey                 generate ecdsa"
 302                                 " key\n");
 303                 BIO_printf(bio_err, " -rand file              files to use for"
 304                                 " random number input\n");
 305                 BIO_printf(bio_err, " -engine e               use engine e, "
 306                                 "possible a hardware device\n");
 307                 goto end;
 308                 }
 309
 310         ERR_load_crypto_strings();
 311
 312         in=BIO_new(BIO_s_file());
 313         out=BIO_new(BIO_s_file());
 314         if ((in == NULL) || (out == NULL))
 315                 {
 316                 ERR_print_errors(bio_err);
 317                 goto end;
 318                 }
 319
 320         if (infile == NULL)
 321                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 322         else
 323                 {
 324                 if (BIO_read_filename(in,infile) <= 0)
 325                         {
 326                         perror(infile);
 327                         goto end;
 328                         }
 329                 }
 330         if (outfile == NULL)
 331                 {
 332                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 333 #ifdef OPENSSL_SYS_VMS
 334                 {
 335                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 336                 out = BIO_push(tmpbio, out);
 337                 }
 338 #endif
 339                 }
 340         else
 341                 {
 342                 if (BIO_write_filename(out,outfile) <= 0)
 343                         {
 344                         perror(outfile);
 345                         goto end;
 346                         }
 347                 }
 348
 349         e = setup_engine(bio_err, engine, 0);
 350
 351         if (list_curves)
 352                 {
 353                 int counter=0;
 354
 355                 for (; counter < sizeof(curve_list)/sizeof(char *); counter++)
 356                         if (BIO_printf(bio_err, " %s\n", curve_list[counter])
 357                                 <= 0)
 358                                 goto end;
 359                 ret = 0;
 360                 goto end;
 361                 }
 362
 363         if (curve_name != NULL)
 364                 {
 365                 int nid = OBJ_sn2nid(curve_name);
 366
 367                 if (nid == 0)
 368                         {
 369                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 370                                 curve_name);
 371                         goto end;
 372                         }
 373
 374                 group = EC_GROUP_new_by_nid(nid);
 375                 if (group == NULL)
 376                         {
 377                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 378                                 curve_name);
 379                         goto end;
 380                         }
 381                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 382                 EC_GROUP_set_point_conversion_form(group, form);
 383                 }
 384         else if (informat == FORMAT_ASN1)
 385                 {
 386                 group = d2i_ECPKParameters_bio(in, NULL);
 387                 }
 388         else if (informat == FORMAT_PEM)
 389                 {
 390                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 391                 }
 392         else
 393                 {
 394                 BIO_printf(bio_err, "bad input format specified\n");
 395                 goto end;
 396                 }
 397
 398         if (group == NULL)
 399                 {
 400                 BIO_printf(bio_err,
 401                         "unable to load elliptic curve parameters\n");
 402                 ERR_print_errors(bio_err);
 403                 goto end;
 404                 }
 405
 406         if (new_form)
 407                 EC_GROUP_set_point_conversion_form(group, form);
 408
 409         if (new_asn1_flag)
 410                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 411
 412         if (no_seed)
 413                 {
 414                 EC_GROUP_set_seed(group, NULL, 0);
 415                 }
 416
 417         if (text)
 418                 {
 419                 if (!ECPKParameters_print(out, group, 0))
 420                         goto end;
 421                 }
 422
 423         if (check)
 424                 {
 425                 if (group == NULL)
 426                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 427                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 428                 if (!EC_GROUP_check(group, NULL))
 429                         {
 430                         BIO_printf(bio_err, "failed\n");
 431                         ERR_print_errors(bio_err);
 432                         }
 433                 else
 434                         BIO_printf(bio_err, "ok\n");
 435
 436                 }
 437
 438         if (C)
 439                 {
 440                 size_t  buf_len = 0, tmp_len = 0;
 441                 const EC_POINT *point;
 442                 int     is_prime, len = 0;
 443                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 444
 445                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 446                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 447                     (ec_order = BN_new()) == NULL ||
 448                     (ec_cofactor = BN_new()) == NULL )
 449                         {
 450                         perror("OPENSSL_malloc");
 451                         goto end;
 452                         }
 453
 454                 is_prime = (EC_METHOD_get_field_type(meth) ==
 455                         NID_X9_62_prime_field);
 456
 457                 if (is_prime)
 458                         {
 459                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 460                                 ec_b, NULL))
 461                                 goto end;
 462                         }
 463                 else
 464                         {
 465                         /* TODO */
 466                         goto end;
 467                         }
 468
 469                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 470                         goto end;
 471                 if (!EC_POINT_point2bn(group, point,
 472                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 473                         NULL))
 474                         goto end;
 475                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 476                         goto end;
 477                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 478                         goto end;
 479
 480                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 481                         !ec_order || !ec_cofactor)
 482                         goto end;
 483
 484                 len = BN_num_bits(ec_order);
 485
 486                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 487                         buf_len = tmp_len;
 488                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 489                         buf_len = tmp_len;
 490                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 491                         buf_len = tmp_len;
 492                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 493                         buf_len = tmp_len;
 494                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 495                         buf_len = tmp_len;
 496                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 497                         buf_len = tmp_len;
 498
 499                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 500
 501                 if (buffer == NULL)
 502                         {
 503                         perror("OPENSSL_malloc");
 504                         goto end;
 505                         }
 506
 507                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 508                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 509                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 510                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 511                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 512                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 513                         buffer);
 514
 515                 BIO_printf(out, "\n\n");
 516
 517                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 518                 BIO_printf(out, "\tint ok=0;\n");
 519                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 520                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 521                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 522                                 "*tmp_3 = NULL;\n\n");
 523                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 524                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 525                                 "goto err;\n", len, len);
 526                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 527                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 528                                 "goto err;\n", len, len);
 529                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 530                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 531                                 "goto err;\n", len, len);
 532                 if (is_prime)
 533                         {
 534                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 535                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 536                                 "\n\t\tgoto err;\n\n");
 537                         }
 538                 else
 539                         {
 540                         /* TODO */
 541                         goto end;
 542                         }
 543                 BIO_printf(out, "\t/* build generator */\n");
 544                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 545                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 546                                 "\n\t\tgoto err;\n", len, len);
 547                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 548                                 "NULL, NULL);\n");
 549                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 550                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 551                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 552                                 "\n\t\tgoto err;\n", len, len);
 553                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 554                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 555                                 "\n\t\tgoto err;\n", len, len);
 556                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 557                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 558                 BIO_printf(out, "\n\tok=1;\n");
 559                 BIO_printf(out, "err:\n");
 560                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 561                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 562                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 563                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 564                 BIO_printf(out, "\tif (!ok)\n");
 565                 BIO_printf(out, "\t\t{\n");
 566                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 567                 BIO_printf(out, "\t\tgroup = NULL;\n");
 568                 BIO_printf(out, "\t\t}\n");
 569                 BIO_printf(out, "\treturn(group);\n\t}\n");
 570         }
 571
 572         if (!noout)
 573                 {
 574                 if (outformat == FORMAT_ASN1)
 575                         i = i2d_ECPKParameters_bio(out, group);
 576                 else if (outformat == FORMAT_PEM)
 577                         i = PEM_write_bio_ECPKParameters(out, group);
 578                 else
 579                         {
 580                         BIO_printf(bio_err,"bad output format specified for"
 581                                 " outfile\n");
 582                         goto end;
 583                         }
 584                 if (!i)
 585                         {
 586                         BIO_printf(bio_err, "unable to write elliptic "
 587                                 "curve parameters\n");
 588                         ERR_print_errors(bio_err);
 589                         goto end;
 590                         }
 591                 }
 592
 593         if (need_rand)
 594                 {
 595                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 596                 if (inrand != NULL)
 597                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 598                                 app_RAND_load_files(inrand));
 599                 }
 600
 601         if (genkey)
 602                 {
 603                 ECDSA *ecdsa = ECDSA_new();
 604
 605                 if (ecdsa == NULL)
 606                         goto end;
 607
 608                 assert(need_rand);
 609
 610                 ecdsa->group = group;
 611
 612                 if (!ECDSA_generate_key(ecdsa))
 613                         {
 614                         ecdsa->group = NULL;
 615                         ECDSA_free(ecdsa);
 616                         goto end;
 617                         }
 618                 if (outformat == FORMAT_ASN1)
 619                         i = i2d_ECDSAPrivateKey_bio(out, ecdsa);
 620                 else if (outformat == FORMAT_PEM)
 621                         i = PEM_write_bio_ECDSAPrivateKey(out, ecdsa, NULL,
 622                                 NULL, 0, NULL, NULL);
 623                 else
 624                         {
 625                         BIO_printf(bio_err, "bad output format specified "
 626                                 "for outfile\n");
 627                         ecdsa->group = NULL;
 628                         ECDSA_free(ecdsa);
 629                         goto end;
 630                         }
 631                 ecdsa->group = NULL;
 632                 ECDSA_free(ecdsa);
 633                 }
 634
 635         if (need_rand)
 636                 app_RAND_write_file(NULL, bio_err);
 637
 638         ret=0;
 639 end:
 640         if (ec_p)
 641                 BN_free(ec_p);
 642         if (ec_a)
 643                 BN_free(ec_a);
 644         if (ec_b)
 645                 BN_free(ec_b);
 646         if (ec_gen)
 647                 BN_free(ec_gen);
 648         if (ec_order)
 649                 BN_free(ec_order);
 650         if (ec_cofactor)
 651                 BN_free(ec_cofactor);
 652         if (buffer)
 653                 OPENSSL_free(buffer);
 654         if (in != NULL)
 655                 BIO_free(in);
 656         if (out != NULL)
 657                 BIO_free_all(out);
 658         if (group != NULL)
 659                 EC_GROUP_free(group);
 660         apps_shutdown();
 661         EXIT(ret);
 662 }
 663
 664 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 665         int len, unsigned char *buffer)
 666         {
 667         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 668         if (BN_is_zero(in))
 669                 BIO_printf(out, "\n\t0x00");
 670         else
 671                 {
 672                 int i, l;
 673
 674                 l = BN_bn2bin(in, buffer);
 675                 for (i=0; i<l-1; i++)
 676                         {
 677                         if ((i%12) == 0)
 678                                 BIO_printf(out, "\n\t");
 679                         BIO_printf(out, "0x%02X,", buffer[i]);
 680                         }
 681                 if ((i%12) == 0)
 682                         BIO_printf(out, "\n\t");
 683                 BIO_printf(out, "0x%02X", buffer[i]);
 684                 }
 685         BIO_printf(out, "\n\t};\n\n");
 686         return 1;
 687         }
 688 #endif