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 /* ====================================================================
  56  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  57  *
  58  * Portions of the attached software ("Contribution") are developed by
  59  * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
  60  *
  61  * The Contribution is licensed pursuant to the OpenSSL open source
  62  * license provided above.
  63  *
  64  * In addition, Sun covenants to all licensees who provide a reciprocal
  65  * covenant with respect to their own patents if any, not to sue under
  66  * current and future patent claims necessarily infringed by the making,
  67  * using, practicing, selling, offering for sale and/or otherwise
  68  * disposing of the Contribution as delivered hereunder
  69  * (or portions thereof), provided that such covenant shall not apply:
  70  *  1) for code that a licensee deletes from the Contribution;
  71  *  2) separates from the Contribution; or
  72  *  3) for infringements caused by:
  73  *       i) the modification of the Contribution or
  74  *      ii) the combination of the Contribution with other software or
  75  *          devices where such combination causes the infringement.
  76  *
  77  * The elliptic curve binary polynomial software is originally written by
  78  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  79  *
  80  */
  81 #ifndef OPENSSL_NO_ECDSA
  82 #include <assert.h>
  83 #include <stdio.h>
  84 #include <stdlib.h>
  85 #include <time.h>
  86 #include <string.h>
  87 #include "apps.h"
  88 #include <openssl/bio.h>
  89 #include <openssl/err.h>
  90 #include <openssl/bn.h>
  91 #include <openssl/ec.h>
  92 #include <openssl/ecdsa.h>
  93 #include <openssl/x509.h>
  94 #include <openssl/pem.h>
  95
  96 #undef PROG
  97 #define PROG    ecparam_main
  98
  99 /* -inform arg            - input format - default PEM (DER or PEM)
 100  * -outform arg           - output format - default PEM
 101  * -in arg                - input file  - default stdin
 102  * -out arg               - output file - default stdout
 103  * -noout
 104  * -text
 105  * -check                 - validate the ec parameters
 106  * -C
 107  * -noout
 108  * -name file             - use the ecparameters with 'short name' name
 109  * -list_curves           - prints a list of all currently available curve
 110  *                          'short names' and exits
 111  * -conv_form                  - specifies the point conversion form
 112  *                          possible values : compressed
 113  *                                            uncompressed (default)
 114  *                                            hybrid
 115  * -param_enc             - specifies the way the ec parameters are encoded
 116  *                          in the asn1 der encoding
 117  *                          possilbe values : named_curve (default)
 118  *                                            explicit
 119  * -no_seed               - if 'explicit' parameters are choosen do not
 120  *                          use the seed
 121  * -genkey                - generates a ecdsa private key
 122  * -rand file
 123  * -engine e              - use engine e, possible a hardware device
 124  */
 125
 126 static const char *curve_list[67] = {
 127         "prime192v1   - 192 bit prime curve from the X9.62 draft",
 128         "prime192v2   - 192 bit prime curve from the X9.62 draft",
 129         "prime192v3   - 192 bit prime curve from the X9.62 draft",
 130         "prime239v1   - 239 bit prime curve from the X9.62 draft",
 131         "prime239v2   - 239 bit prime curve from the X9.62 draft",
 132         "prime239v3   - 239 bit prime curve from the X9.62 draft",
 133         "prime256v1   - 256 bit prime curve from the X9.62 draft",
 134         "secp112r1    - SECG recommended curve over a 112 bit prime field",
 135         "secp112r2    - SECG recommended curve over a 112 bit prime field",
 136         "secp128r1    - SECG recommended curve over a 128 bit prime field",
 137         "secp128r2    - SECG recommended curve over a 128 bit prime field",
 138         "secp160k1    - SECG recommended curve over a 160 bit prime field",
 139         "secp160r1    - SECG recommended curve over a 160 bit prime field",
 140         "secp160r2    - SECG recommended curve over a 160 bit prime field",
 141         "secp192k1    - SECG recommended curve over a 192 bit prime field",
 142         "prime192v1   - SECG recommended curve over a 192 bit prime field (aka secp192r1)",
 143         "secp224k1    - SECG recommended curve over a 224 bit prime field",
 144         "secp224r1    - SECG/NIST recommended curve over a 224 bit prime field",
 145         "secp256k1    - SECG recommended curve over a 256 bit prime field",
 146         "prime256v1   - SECG recommended curve over a 256 bit prime field (aka secp256r1)",
 147         "secp384r1    - SECG/NIST recommended curve over a 384 bit prime field",
 148         "secp521r1    - SECG/NIST recommended curve over a 521 bit prime field",
 149         "wap-wsg-idm-ecid-wtls6  - 112 bit prime curve from the WTLS standard",
 150         "wap-wsg-idm-ecid-wtls8  - 112 bit prime curve from the WTLS standard",
 151         "wap-wsg-idm-ecid-wtls7  - 160 bit prime curve from the WTLS standard",
 152         "wap-wsg-idm-ecid-wtls9  - 160 bit prime curve from the WTLS standard",
 153         "wap-wsg-idm-ecid-wtls12 - 224 bit prime curve from the WTLS standard",
 154         "c2pnb163v1   - 163 bit binary curve from the X9.62 draft",
 155         "c2pnb163v2   - 163 bit binary curve from the X9.62 draft",
 156         "c2pnb163v3   - 163 bit binary curve from the X9.62 draft",
 157         "c2pnb176v1   - 176 bit binary curve from the X9.62 draft",
 158         "c2tnb191v1   - 191 bit binary curve from the X9.62 draft",
 159         "c2tnb191v2   - 191 bit binary curve from the X9.62 draft",
 160         "c2tnb191v3   - 191 bit binary curve from the X9.62 draft",
 161         "c2pnb208w1   - 208 bit binary curve from the X9.62 draft",
 162         "c2tnb239v1   - 239 bit binary curve from the X9.62 draft",
 163         "c2tnb239v2   - 239 bit binary curve from the X9.62 draft",
 164         "c2tnb239v3   - 239 bit binary curve from the X9.62 draft",
 165         "c2pnb272w1   - 272 bit binary curve from the X9.62 draft",
 166         "c2pnb304w1   - 304 bit binary curve from the X9.62 draft",
 167         "c2tnb359v1   - 359 bit binary curve from the X9.62 draft",
 168         "c2pnb368w1   - 368 bit binary curve from the X9.62 draft",
 169         "c2tnb431r1   - 431 bit binary curve from the X9.62 draft",
 170         "sect113r1    - SECG recommended curve over a 113 bit binary field",
 171         "sect113r2    - SECG recommended curve over a 113 bit binary field",
 172         "sect131r1    - SECG recommended curve over a 131 bit binary field",
 173         "sect131r2    - SECG recommended curve over a 131 bit binary field",
 174         "sect163k1    - SECG/NIST recommended curve over a 163 bit binary field",
 175         "sect163r1    - SECG recommended curve over a 163 bit binary field",
 176         "sect163r2    - SECG/NIST recommended curve over a 163 bit binary field",
 177         "sect193r1    - SECG recommended curve over a 193 bit binary field",
 178         "sect193r2    - SECG recommended curve over a 193 bit binary field",
 179         "sect233k1    - SECG/NIST recommended curve over a 233 bit binary field",
 180         "sect233r1    - SECG/NIST recommended curve over a 233 bit binary field",
 181         "sect239k1    - SECG recommended curve over a 239 bit binary field",
 182         "sect283k1    - SECG/NIST recommended curve over a 283 bit binary field",
 183         "sect283r1    - SECG/NIST recommended curve over a 283 bit binary field",
 184         "sect409k1    - SECG/NIST recommended curve over a 409 bit binary field",
 185         "sect409r1    - SECG/NIST recommended curve over a 409 bit binary field",
 186         "sect571k1    - SECG/NIST recommended curve over a 571 bit binary field",
 187         "sect571r1    - SECG/NIST recommended curve over a 571 bit binary field",
 188         "wap-wsg-idm-ecid-wtls1  - 113 bit binary curve from the WTLS standard",
 189         "wap-wsg-idm-ecid-wtls4  - 113 bit binary curve from the WTLS standard",
 190         "wap-wsg-idm-ecid-wtls3  - 163 bit binary curve from the WTLS standard",
 191         "wap-wsg-idm-ecid-wtls5  - 163 bit binary curve from the WTLS standard",
 192         "wap-wsg-idm-ecid-wtls10 - 233 bit binary curve from the WTLS standard",
 193         "wap-wsg-idm-ecid-wtls11 - 233 bit binary curve from the WTLS standard"
 194 };
 195
 196 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 197
 198 int MAIN(int, char **);
 199
 200 int MAIN(int argc, char **argv)
 201         {
 202         EC_GROUP *group = NULL;
 203         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 204         int     new_form = 0;
 205         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 206         int     new_asn1_flag = 0;
 207         char    *curve_name = NULL, *inrand = NULL;
 208         int     list_curves = 0, no_seed = 0, check = 0,
 209                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 210         char    *infile = NULL, *outfile = NULL, *prog;
 211         BIO     *in = NULL, *out = NULL;
 212         int     informat, outformat, noout = 0, C = 0, ret = 1;
 213         ENGINE  *e = NULL;
 214         char    *engine = NULL;
 215
 216         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 217                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 218         unsigned char *buffer = NULL;
 219
 220         apps_startup();
 221
 222         if (bio_err == NULL)
 223                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 224                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 225
 226         if (!load_config(bio_err, NULL))
 227                 goto end;
 228
 229         informat=FORMAT_PEM;
 230         outformat=FORMAT_PEM;
 231
 232         prog=argv[0];
 233         argc--;
 234         argv++;
 235         while (argc >= 1)
 236                 {
 237                 if      (strcmp(*argv,"-inform") == 0)
 238                         {
 239                         if (--argc < 1) goto bad;
 240                         informat=str2fmt(*(++argv));
 241                         }
 242                 else if (strcmp(*argv,"-outform") == 0)
 243                         {
 244                         if (--argc < 1) goto bad;
 245                         outformat=str2fmt(*(++argv));
 246                         }
 247                 else if (strcmp(*argv,"-in") == 0)
 248                         {
 249                         if (--argc < 1) goto bad;
 250                         infile= *(++argv);
 251                         }
 252                 else if (strcmp(*argv,"-out") == 0)
 253                         {
 254                         if (--argc < 1) goto bad;
 255                         outfile= *(++argv);
 256                         }
 257                 else if (strcmp(*argv,"-text") == 0)
 258                         text = 1;
 259                 else if (strcmp(*argv,"-C") == 0)
 260                         C = 1;
 261                 else if (strcmp(*argv,"-check") == 0)
 262                         check = 1;
 263                 else if (strcmp (*argv, "-name") == 0)
 264                         {
 265                         if (--argc < 1)
 266                                 goto bad;
 267                         curve_name = *(++argv);
 268                         }
 269                 else if (strcmp(*argv, "-list_curves") == 0)
 270                         list_curves = 1;
 271                 else if (strcmp(*argv, "-conv_form") == 0)
 272                         {
 273                         if (--argc < 1)
 274                                 goto bad;
 275                         ++argv;
 276                         new_form = 1;
 277                         if (strcmp(*argv, "compressed") == 0)
 278                                 form = POINT_CONVERSION_COMPRESSED;
 279                         else if (strcmp(*argv, "uncompressed") == 0)
 280                                 form = POINT_CONVERSION_UNCOMPRESSED;
 281                         else if (strcmp(*argv, "hybrid") == 0)
 282                                 form = POINT_CONVERSION_HYBRID;
 283                         else
 284                                 goto bad;
 285                         }
 286                 else if (strcmp(*argv, "-param_enc") == 0)
 287                         {
 288                         if (--argc < 1)
 289                                 goto bad;
 290                         ++argv;
 291                         new_asn1_flag = 1;
 292                         if (strcmp(*argv, "named_curve") == 0)
 293                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 294                         else if (strcmp(*argv, "explicit") == 0)
 295                                 asn1_flag = 0;
 296                         else
 297                                 goto bad;
 298                         }
 299                 else if (strcmp(*argv, "-no_seed") == 0)
 300                         no_seed = 1;
 301                 else if (strcmp(*argv, "-noout") == 0)
 302                         noout=1;
 303                 else if (strcmp(*argv,"-genkey") == 0)
 304                         {
 305                         genkey=1;
 306                         need_rand=1;
 307                         }
 308                 else if (strcmp(*argv, "-rand") == 0)
 309                         {
 310                         if (--argc < 1) goto bad;
 311                         inrand= *(++argv);
 312                         need_rand=1;
 313                         }
 314                 else if(strcmp(*argv, "-engine") == 0)
 315                         {
 316                         if (--argc < 1) goto bad;
 317                         engine = *(++argv);
 318                         }
 319                 else
 320                         {
 321                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 322                         badops=1;
 323                         break;
 324                         }
 325                 argc--;
 326                 argv++;
 327                 }
 328
 329         if (badops)
 330                 {
 331 bad:
 332                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 333                 BIO_printf(bio_err, "where options are\n");
 334                 BIO_printf(bio_err, " -inform arg             input format - "
 335                                 "default PEM (DER or PEM)\n");
 336                 BIO_printf(bio_err, " -outform arg            output format - "
 337                                 "default PEM\n");
 338                 BIO_printf(bio_err, " -in  arg                input file  - "
 339                                 "default stdin\n");
 340                 BIO_printf(bio_err, " -out arg                output file - "
 341                                 "default stdout\n");
 342                 BIO_printf(bio_err, " -noout                  do not print the "
 343                                 "ec parameter\n");
 344                 BIO_printf(bio_err, " -text                   print the ec "
 345                                 "parameters in text form\n");
 346                 BIO_printf(bio_err, " -check                  validate the ec "
 347                                 "parameters\n");
 348                 BIO_printf(bio_err, " -C                      print a 'C' "
 349                                 "function creating the parameters\n");
 350                 BIO_printf(bio_err, " -name arg               use the "
 351                                 "ec parameters with 'short name' name\n");
 352                 BIO_printf(bio_err, " -list_curves            prints a list of "
 353                                 "all currently available curve\n");
 354                 BIO_printf(bio_err, "                         'short names'\n");
 355                 BIO_printf(bio_err, " -conv_form arg          specifies the "
 356                                 "point conversion form \n");
 357                 BIO_printf(bio_err, "                         possible values :"
 358                                 " compressed\n");
 359                 BIO_printf(bio_err, "                                          "
 360                                 " uncompressed (default)\n");
 361                 BIO_printf(bio_err, "                                          "
 362                                 " hybrid\n");
 363                 BIO_printf(bio_err, " -param_enc arg          specifies the way"
 364                                 " the ec parameters are encoded\n");
 365                 BIO_printf(bio_err, "                         in the asn1 der "
 366                                 "encoding\n");
 367                 BIO_printf(bio_err, "                         possilbe values :"
 368                                 " named_curve (default)\n");
 369                 BIO_printf(bio_err,"                                      "
 370                                 "     explicit\n");
 371                 BIO_printf(bio_err, " -no_seed                if 'explicit'"
 372                                 " parameters are choosen do not\n");
 373                 BIO_printf(bio_err, "                         use the seed\n");
 374                 BIO_printf(bio_err, " -genkey                 generate ecdsa"
 375                                 " key\n");
 376                 BIO_printf(bio_err, " -rand file              files to use for"
 377                                 " random number input\n");
 378                 BIO_printf(bio_err, " -engine e               use engine e, "
 379                                 "possible a hardware device\n");
 380                 goto end;
 381                 }
 382
 383         ERR_load_crypto_strings();
 384
 385         in=BIO_new(BIO_s_file());
 386         out=BIO_new(BIO_s_file());
 387         if ((in == NULL) || (out == NULL))
 388                 {
 389                 ERR_print_errors(bio_err);
 390                 goto end;
 391                 }
 392
 393         if (infile == NULL)
 394                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 395         else
 396                 {
 397                 if (BIO_read_filename(in,infile) <= 0)
 398                         {
 399                         perror(infile);
 400                         goto end;
 401                         }
 402                 }
 403         if (outfile == NULL)
 404                 {
 405                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 406 #ifdef OPENSSL_SYS_VMS
 407                 {
 408                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 409                 out = BIO_push(tmpbio, out);
 410                 }
 411 #endif
 412                 }
 413         else
 414                 {
 415                 if (BIO_write_filename(out,outfile) <= 0)
 416                         {
 417                         perror(outfile);
 418                         goto end;
 419                         }
 420                 }
 421
 422         e = setup_engine(bio_err, engine, 0);
 423
 424         if (list_curves)
 425                 {
 426                 int counter=0;
 427
 428                 for (; counter < sizeof(curve_list)/sizeof(char *); counter++)
 429                         if (BIO_printf(bio_err, " %s\n", curve_list[counter])
 430                                 <= 0)
 431                                 goto end;
 432                 ret = 0;
 433                 goto end;
 434                 }
 435
 436         if (curve_name != NULL)
 437                 {
 438                 int nid = OBJ_sn2nid(curve_name);
 439
 440                 if (nid == 0)
 441                         {
 442                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 443                                 curve_name);
 444                         goto end;
 445                         }
 446
 447                 group = EC_GROUP_new_by_nid(nid);
 448                 if (group == NULL)
 449                         {
 450                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 451                                 curve_name);
 452                         goto end;
 453                         }
 454                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 455                 EC_GROUP_set_point_conversion_form(group, form);
 456                 }
 457         else if (informat == FORMAT_ASN1)
 458                 {
 459                 group = d2i_ECPKParameters_bio(in, NULL);
 460                 }
 461         else if (informat == FORMAT_PEM)
 462                 {
 463                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 464                 }
 465         else
 466                 {
 467                 BIO_printf(bio_err, "bad input format specified\n");
 468                 goto end;
 469                 }
 470
 471         if (group == NULL)
 472                 {
 473                 BIO_printf(bio_err,
 474                         "unable to load elliptic curve parameters\n");
 475                 ERR_print_errors(bio_err);
 476                 goto end;
 477                 }
 478
 479         if (new_form)
 480                 EC_GROUP_set_point_conversion_form(group, form);
 481
 482         if (new_asn1_flag)
 483                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 484
 485         if (no_seed)
 486                 {
 487                 EC_GROUP_set_seed(group, NULL, 0);
 488                 }
 489
 490         if (text)
 491                 {
 492                 if (!ECPKParameters_print(out, group, 0))
 493                         goto end;
 494                 }
 495
 496         if (check)
 497                 {
 498                 if (group == NULL)
 499                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 500                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 501                 if (!EC_GROUP_check(group, NULL))
 502                         {
 503                         BIO_printf(bio_err, "failed\n");
 504                         ERR_print_errors(bio_err);
 505                         }
 506                 else
 507                         BIO_printf(bio_err, "ok\n");
 508
 509                 }
 510
 511         if (C)
 512                 {
 513                 size_t  buf_len = 0, tmp_len = 0;
 514                 const EC_POINT *point;
 515                 int     is_prime, len = 0;
 516                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 517
 518                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 519                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 520                     (ec_order = BN_new()) == NULL ||
 521                     (ec_cofactor = BN_new()) == NULL )
 522                         {
 523                         perror("OPENSSL_malloc");
 524                         goto end;
 525                         }
 526
 527                 is_prime = (EC_METHOD_get_field_type(meth) ==
 528                         NID_X9_62_prime_field);
 529
 530                 if (is_prime)
 531                         {
 532                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 533                                 ec_b, NULL))
 534                                 goto end;
 535                         }
 536                 else
 537                         {
 538                         /* TODO */
 539                         goto end;
 540                         }
 541
 542                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 543                         goto end;
 544                 if (!EC_POINT_point2bn(group, point,
 545                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 546                         NULL))
 547                         goto end;
 548                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 549                         goto end;
 550                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 551                         goto end;
 552
 553                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 554                         !ec_order || !ec_cofactor)
 555                         goto end;
 556
 557                 len = BN_num_bits(ec_order);
 558
 559                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 560                         buf_len = tmp_len;
 561                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 562                         buf_len = tmp_len;
 563                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 564                         buf_len = tmp_len;
 565                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 566                         buf_len = tmp_len;
 567                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 568                         buf_len = tmp_len;
 569                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 570                         buf_len = tmp_len;
 571
 572                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 573
 574                 if (buffer == NULL)
 575                         {
 576                         perror("OPENSSL_malloc");
 577                         goto end;
 578                         }
 579
 580                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 581                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 582                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 583                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 584                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 585                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 586                         buffer);
 587
 588                 BIO_printf(out, "\n\n");
 589
 590                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 591                 BIO_printf(out, "\tint ok=0;\n");
 592                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 593                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 594                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 595                                 "*tmp_3 = NULL;\n\n");
 596                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 597                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 598                                 "goto err;\n", len, len);
 599                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 600                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 601                                 "goto err;\n", len, len);
 602                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 603                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 604                                 "goto err;\n", len, len);
 605                 if (is_prime)
 606                         {
 607                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 608                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 609                                 "\n\t\tgoto err;\n\n");
 610                         }
 611                 else
 612                         {
 613                         /* TODO */
 614                         goto end;
 615                         }
 616                 BIO_printf(out, "\t/* build generator */\n");
 617                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 618                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 619                                 "\n\t\tgoto err;\n", len, len);
 620                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 621                                 "NULL, NULL);\n");
 622                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 623                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 624                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 625                                 "\n\t\tgoto err;\n", len, len);
 626                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 627                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 628                                 "\n\t\tgoto err;\n", len, len);
 629                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 630                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 631                 BIO_printf(out, "\n\tok=1;\n");
 632                 BIO_printf(out, "err:\n");
 633                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 634                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 635                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 636                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 637                 BIO_printf(out, "\tif (!ok)\n");
 638                 BIO_printf(out, "\t\t{\n");
 639                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 640                 BIO_printf(out, "\t\tgroup = NULL;\n");
 641                 BIO_printf(out, "\t\t}\n");
 642                 BIO_printf(out, "\treturn(group);\n\t}\n");
 643         }
 644
 645         if (!noout)
 646                 {
 647                 if (outformat == FORMAT_ASN1)
 648                         i = i2d_ECPKParameters_bio(out, group);
 649                 else if (outformat == FORMAT_PEM)
 650                         i = PEM_write_bio_ECPKParameters(out, group);
 651                 else
 652                         {
 653                         BIO_printf(bio_err,"bad output format specified for"
 654                                 " outfile\n");
 655                         goto end;
 656                         }
 657                 if (!i)
 658                         {
 659                         BIO_printf(bio_err, "unable to write elliptic "
 660                                 "curve parameters\n");
 661                         ERR_print_errors(bio_err);
 662                         goto end;
 663                         }
 664                 }
 665
 666         if (need_rand)
 667                 {
 668                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 669                 if (inrand != NULL)
 670                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 671                                 app_RAND_load_files(inrand));
 672                 }
 673
 674         if (genkey)
 675                 {
 676                 ECDSA *ecdsa = ECDSA_new();
 677
 678                 if (ecdsa == NULL)
 679                         goto end;
 680
 681                 assert(need_rand);
 682
 683                 ecdsa->group = group;
 684
 685                 if (!ECDSA_generate_key(ecdsa))
 686                         {
 687                         ecdsa->group = NULL;
 688                         ECDSA_free(ecdsa);
 689                         goto end;
 690                         }
 691                 if (outformat == FORMAT_ASN1)
 692                         i = i2d_ECDSAPrivateKey_bio(out, ecdsa);
 693                 else if (outformat == FORMAT_PEM)
 694                         i = PEM_write_bio_ECDSAPrivateKey(out, ecdsa, NULL,
 695                                 NULL, 0, NULL, NULL);
 696                 else
 697                         {
 698                         BIO_printf(bio_err, "bad output format specified "
 699                                 "for outfile\n");
 700                         ecdsa->group = NULL;
 701                         ECDSA_free(ecdsa);
 702                         goto end;
 703                         }
 704                 ecdsa->group = NULL;
 705                 ECDSA_free(ecdsa);
 706                 }
 707
 708         if (need_rand)
 709                 app_RAND_write_file(NULL, bio_err);
 710
 711         ret=0;
 712 end:
 713         if (ec_p)
 714                 BN_free(ec_p);
 715         if (ec_a)
 716                 BN_free(ec_a);
 717         if (ec_b)
 718                 BN_free(ec_b);
 719         if (ec_gen)
 720                 BN_free(ec_gen);
 721         if (ec_order)
 722                 BN_free(ec_order);
 723         if (ec_cofactor)
 724                 BN_free(ec_cofactor);
 725         if (buffer)
 726                 OPENSSL_free(buffer);
 727         if (in != NULL)
 728                 BIO_free(in);
 729         if (out != NULL)
 730                 BIO_free_all(out);
 731         if (group != NULL)
 732                 EC_GROUP_free(group);
 733         apps_shutdown();
 734         EXIT(ret);
 735 }
 736
 737 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 738         int len, unsigned char *buffer)
 739         {
 740         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 741         if (BN_is_zero(in))
 742                 BIO_printf(out, "\n\t0x00");
 743         else
 744                 {
 745                 int i, l;
 746
 747                 l = BN_bn2bin(in, buffer);
 748                 for (i=0; i<l-1; i++)
 749                         {
 750                         if ((i%12) == 0)
 751                                 BIO_printf(out, "\n\t");
 752                         BIO_printf(out, "0x%02X,", buffer[i]);
 753                         }
 754                 if ((i%12) == 0)
 755                         BIO_printf(out, "\n\t");
 756                 BIO_printf(out, "0x%02X", buffer[i]);
 757                 }
 758         BIO_printf(out, "\n\t};\n\n");
 759         return 1;
 760         }
 761 #endif