apps/ecparam.c

   1 /* apps/ecparam.c */
   2 /*
   3  * Originally written by Nils Larsch for the OpenSSL project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    openssl-core@openssl.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 /* ====================================================================
  59  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  60  *
  61  * Portions of the attached software ("Contribution") are developed by
  62  * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
  63  *
  64  * The Contribution is licensed pursuant to the OpenSSL open source
  65  * license provided above.
  66  *
  67  * In addition, Sun covenants to all licensees who provide a reciprocal
  68  * covenant with respect to their own patents if any, not to sue under
  69  * current and future patent claims necessarily infringed by the making,
  70  * using, practicing, selling, offering for sale and/or otherwise
  71  * disposing of the Contribution as delivered hereunder
  72  * (or portions thereof), provided that such covenant shall not apply:
  73  *  1) for code that a licensee deletes from the Contribution;
  74  *  2) separates from the Contribution; or
  75  *  3) for infringements caused by:
  76  *       i) the modification of the Contribution or
  77  *      ii) the combination of the Contribution with other software or
  78  *          devices where such combination causes the infringement.
  79  *
  80  * The elliptic curve binary polynomial software is originally written by
  81  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  82  *
  83  */
  84 #ifndef OPENSSL_NO_EC
  85 #include <assert.h>
  86 #include <stdio.h>
  87 #include <stdlib.h>
  88 #include <time.h>
  89 #include <string.h>
  90 #include "apps.h"
  91 #include <openssl/bio.h>
  92 #include <openssl/err.h>
  93 #include <openssl/bn.h>
  94 #include <openssl/ec.h>
  95 #ifndef OPENSSL_NO_ECDSA
  96 #include <openssl/ecdsa.h>
  97 #endif
  98 #include <openssl/x509.h>
  99 #include <openssl/pem.h>
 100
 101 #undef PROG
 102 #define PROG    ecparam_main
 103
 104 /* -inform arg            - input format - default PEM (DER or PEM)
 105  * -outform arg           - output format - default PEM
 106  * -in arg                - input file  - default stdin
 107  * -out arg               - output file - default stdout
 108  * -noout
 109  * -text
 110  * -check                 - validate the ec parameters
 111  * -C
 112  * -noout
 113  * -name file             - use the ecparameters with 'short name' name
 114  * -list_curves           - prints a list of all currently available curve
 115  *                          'short names' and exits
 116  * -conv_form                  - specifies the point conversion form
 117  *                          possible values : compressed
 118  *                                            uncompressed (default)
 119  *                                            hybrid
 120  * -param_enc             - specifies the way the ec parameters are encoded
 121  *                          in the asn1 der encoding
 122  *                          possilbe values : named_curve (default)
 123  *                                            explicit
 124  * -no_seed               - if 'explicit' parameters are choosen do not
 125  *                          use the seed
 126  * -genkey                - generates a ecdsa private key
 127  * -rand file
 128  * -engine e              - use engine e, possible a hardware device
 129  */
 130
 131 static const char *curve_list[67] = {
 132         "prime192v1   - 192 bit prime curve from the X9.62 draft",
 133         "prime192v2   - 192 bit prime curve from the X9.62 draft",
 134         "prime192v3   - 192 bit prime curve from the X9.62 draft",
 135         "prime239v1   - 239 bit prime curve from the X9.62 draft",
 136         "prime239v2   - 239 bit prime curve from the X9.62 draft",
 137         "prime239v3   - 239 bit prime curve from the X9.62 draft",
 138         "prime256v1   - 256 bit prime curve from the X9.62 draft",
 139         "secp112r1    - SECG recommended curve over a 112 bit prime field",
 140         "secp112r2    - SECG recommended curve over a 112 bit prime field",
 141         "secp128r1    - SECG recommended curve over a 128 bit prime field",
 142         "secp128r2    - SECG recommended curve over a 128 bit prime field",
 143         "secp160k1    - SECG recommended curve over a 160 bit prime field",
 144         "secp160r1    - SECG recommended curve over a 160 bit prime field",
 145         "secp160r2    - SECG recommended curve over a 160 bit prime field",
 146         "secp192k1    - SECG recommended curve over a 192 bit prime field",
 147         "prime192v1   - SECG recommended curve over a 192 bit prime field (aka secp192r1)",
 148         "secp224k1    - SECG recommended curve over a 224 bit prime field",
 149         "secp224r1    - SECG/NIST recommended curve over a 224 bit prime field",
 150         "secp256k1    - SECG recommended curve over a 256 bit prime field",
 151         "prime256v1   - SECG recommended curve over a 256 bit prime field (aka secp256r1)",
 152         "secp384r1    - SECG/NIST recommended curve over a 384 bit prime field",
 153         "secp521r1    - SECG/NIST recommended curve over a 521 bit prime field",
 154         "wap-wsg-idm-ecid-wtls6  - 112 bit prime curve from the WTLS standard",
 155         "wap-wsg-idm-ecid-wtls8  - 112 bit prime curve from the WTLS standard",
 156         "wap-wsg-idm-ecid-wtls7  - 160 bit prime curve from the WTLS standard",
 157         "wap-wsg-idm-ecid-wtls9  - 160 bit prime curve from the WTLS standard",
 158         "wap-wsg-idm-ecid-wtls12 - 224 bit prime curve from the WTLS standard",
 159         "c2pnb163v1   - 163 bit binary curve from the X9.62 draft",
 160         "c2pnb163v2   - 163 bit binary curve from the X9.62 draft",
 161         "c2pnb163v3   - 163 bit binary curve from the X9.62 draft",
 162         "c2pnb176v1   - 176 bit binary curve from the X9.62 draft",
 163         "c2tnb191v1   - 191 bit binary curve from the X9.62 draft",
 164         "c2tnb191v2   - 191 bit binary curve from the X9.62 draft",
 165         "c2tnb191v3   - 191 bit binary curve from the X9.62 draft",
 166         "c2pnb208w1   - 208 bit binary curve from the X9.62 draft",
 167         "c2tnb239v1   - 239 bit binary curve from the X9.62 draft",
 168         "c2tnb239v2   - 239 bit binary curve from the X9.62 draft",
 169         "c2tnb239v3   - 239 bit binary curve from the X9.62 draft",
 170         "c2pnb272w1   - 272 bit binary curve from the X9.62 draft",
 171         "c2pnb304w1   - 304 bit binary curve from the X9.62 draft",
 172         "c2tnb359v1   - 359 bit binary curve from the X9.62 draft",
 173         "c2pnb368w1   - 368 bit binary curve from the X9.62 draft",
 174         "c2tnb431r1   - 431 bit binary curve from the X9.62 draft",
 175         "sect113r1    - SECG recommended curve over a 113 bit binary field",
 176         "sect113r2    - SECG recommended curve over a 113 bit binary field",
 177         "sect131r1    - SECG recommended curve over a 131 bit binary field",
 178         "sect131r2    - SECG recommended curve over a 131 bit binary field",
 179         "sect163k1    - SECG/NIST recommended curve over a 163 bit binary field",
 180         "sect163r1    - SECG recommended curve over a 163 bit binary field",
 181         "sect163r2    - SECG/NIST recommended curve over a 163 bit binary field",
 182         "sect193r1    - SECG recommended curve over a 193 bit binary field",
 183         "sect193r2    - SECG recommended curve over a 193 bit binary field",
 184         "sect233k1    - SECG/NIST recommended curve over a 233 bit binary field",
 185         "sect233r1    - SECG/NIST recommended curve over a 233 bit binary field",
 186         "sect239k1    - SECG recommended curve over a 239 bit binary field",
 187         "sect283k1    - SECG/NIST recommended curve over a 283 bit binary field",
 188         "sect283r1    - SECG/NIST recommended curve over a 283 bit binary field",
 189         "sect409k1    - SECG/NIST recommended curve over a 409 bit binary field",
 190         "sect409r1    - SECG/NIST recommended curve over a 409 bit binary field",
 191         "sect571k1    - SECG/NIST recommended curve over a 571 bit binary field",
 192         "sect571r1    - SECG/NIST recommended curve over a 571 bit binary field",
 193         "wap-wsg-idm-ecid-wtls1  - 113 bit binary curve from the WTLS standard",
 194         "wap-wsg-idm-ecid-wtls4  - 113 bit binary curve from the WTLS standard",
 195         "wap-wsg-idm-ecid-wtls3  - 163 bit binary curve from the WTLS standard",
 196         "wap-wsg-idm-ecid-wtls5  - 163 bit binary curve from the WTLS standard",
 197         "wap-wsg-idm-ecid-wtls10 - 233 bit binary curve from the WTLS standard",
 198         "wap-wsg-idm-ecid-wtls11 - 233 bit binary curve from the WTLS standard"
 199 };
 200
 201 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
 202
 203 int MAIN(int, char **);
 204
 205 int MAIN(int argc, char **argv)
 206         {
 207         EC_GROUP *group = NULL;
 208         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 209         int     new_form = 0;
 210         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 211         int     new_asn1_flag = 0;
 212         char    *curve_name = NULL, *inrand = NULL;
 213         int     list_curves = 0, no_seed = 0, check = 0,
 214                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
 215         char    *infile = NULL, *outfile = NULL, *prog;
 216         BIO     *in = NULL, *out = NULL;
 217         int     informat, outformat, noout = 0, C = 0, ret = 1;
 218         ENGINE  *e = NULL;
 219         char    *engine = NULL;
 220
 221         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
 222                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
 223         unsigned char *buffer = NULL;
 224
 225         apps_startup();
 226
 227         if (bio_err == NULL)
 228                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 229                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 230
 231         if (!load_config(bio_err, NULL))
 232                 goto end;
 233
 234         informat=FORMAT_PEM;
 235         outformat=FORMAT_PEM;
 236
 237         prog=argv[0];
 238         argc--;
 239         argv++;
 240         while (argc >= 1)
 241                 {
 242                 if      (strcmp(*argv,"-inform") == 0)
 243                         {
 244                         if (--argc < 1) goto bad;
 245                         informat=str2fmt(*(++argv));
 246                         }
 247                 else if (strcmp(*argv,"-outform") == 0)
 248                         {
 249                         if (--argc < 1) goto bad;
 250                         outformat=str2fmt(*(++argv));
 251                         }
 252                 else if (strcmp(*argv,"-in") == 0)
 253                         {
 254                         if (--argc < 1) goto bad;
 255                         infile= *(++argv);
 256                         }
 257                 else if (strcmp(*argv,"-out") == 0)
 258                         {
 259                         if (--argc < 1) goto bad;
 260                         outfile= *(++argv);
 261                         }
 262                 else if (strcmp(*argv,"-text") == 0)
 263                         text = 1;
 264                 else if (strcmp(*argv,"-C") == 0)
 265                         C = 1;
 266                 else if (strcmp(*argv,"-check") == 0)
 267                         check = 1;
 268                 else if (strcmp (*argv, "-name") == 0)
 269                         {
 270                         if (--argc < 1)
 271                                 goto bad;
 272                         curve_name = *(++argv);
 273                         }
 274                 else if (strcmp(*argv, "-list_curves") == 0)
 275                         list_curves = 1;
 276                 else if (strcmp(*argv, "-conv_form") == 0)
 277                         {
 278                         if (--argc < 1)
 279                                 goto bad;
 280                         ++argv;
 281                         new_form = 1;
 282                         if (strcmp(*argv, "compressed") == 0)
 283                                 form = POINT_CONVERSION_COMPRESSED;
 284                         else if (strcmp(*argv, "uncompressed") == 0)
 285                                 form = POINT_CONVERSION_UNCOMPRESSED;
 286                         else if (strcmp(*argv, "hybrid") == 0)
 287                                 form = POINT_CONVERSION_HYBRID;
 288                         else
 289                                 goto bad;
 290                         }
 291                 else if (strcmp(*argv, "-param_enc") == 0)
 292                         {
 293                         if (--argc < 1)
 294                                 goto bad;
 295                         ++argv;
 296                         new_asn1_flag = 1;
 297                         if (strcmp(*argv, "named_curve") == 0)
 298                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 299                         else if (strcmp(*argv, "explicit") == 0)
 300                                 asn1_flag = 0;
 301                         else
 302                                 goto bad;
 303                         }
 304                 else if (strcmp(*argv, "-no_seed") == 0)
 305                         no_seed = 1;
 306                 else if (strcmp(*argv, "-noout") == 0)
 307                         noout=1;
 308                 else if (strcmp(*argv,"-genkey") == 0)
 309                         {
 310                         genkey=1;
 311                         need_rand=1;
 312                         }
 313                 else if (strcmp(*argv, "-rand") == 0)
 314                         {
 315                         if (--argc < 1) goto bad;
 316                         inrand= *(++argv);
 317                         need_rand=1;
 318                         }
 319                 else if(strcmp(*argv, "-engine") == 0)
 320                         {
 321                         if (--argc < 1) goto bad;
 322                         engine = *(++argv);
 323                         }
 324                 else
 325                         {
 326                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 327                         badops=1;
 328                         break;
 329                         }
 330                 argc--;
 331                 argv++;
 332                 }
 333
 334         if (badops)
 335                 {
 336 bad:
 337                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
 338                 BIO_printf(bio_err, "where options are\n");
 339                 BIO_printf(bio_err, " -inform arg             input format - "
 340                                 "default PEM (DER or PEM)\n");
 341                 BIO_printf(bio_err, " -outform arg            output format - "
 342                                 "default PEM\n");
 343                 BIO_printf(bio_err, " -in  arg                input file  - "
 344                                 "default stdin\n");
 345                 BIO_printf(bio_err, " -out arg                output file - "
 346                                 "default stdout\n");
 347                 BIO_printf(bio_err, " -noout                  do not print the "
 348                                 "ec parameter\n");
 349                 BIO_printf(bio_err, " -text                   print the ec "
 350                                 "parameters in text form\n");
 351                 BIO_printf(bio_err, " -check                  validate the ec "
 352                                 "parameters\n");
 353                 BIO_printf(bio_err, " -C                      print a 'C' "
 354                                 "function creating the parameters\n");
 355                 BIO_printf(bio_err, " -name arg               use the "
 356                                 "ec parameters with 'short name' name\n");
 357                 BIO_printf(bio_err, " -list_curves            prints a list of "
 358                                 "all currently available curve\n");
 359                 BIO_printf(bio_err, "                         'short names'\n");
 360                 BIO_printf(bio_err, " -conv_form arg          specifies the "
 361                                 "point conversion form \n");
 362                 BIO_printf(bio_err, "                         possible values :"
 363                                 " compressed\n");
 364                 BIO_printf(bio_err, "                                          "
 365                                 " uncompressed (default)\n");
 366                 BIO_printf(bio_err, "                                          "
 367                                 " hybrid\n");
 368                 BIO_printf(bio_err, " -param_enc arg          specifies the way"
 369                                 " the ec parameters are encoded\n");
 370                 BIO_printf(bio_err, "                         in the asn1 der "
 371                                 "encoding\n");
 372                 BIO_printf(bio_err, "                         possilbe values :"
 373                                 " named_curve (default)\n");
 374                 BIO_printf(bio_err,"                                      "
 375                                 "     explicit\n");
 376                 BIO_printf(bio_err, " -no_seed                if 'explicit'"
 377                                 " parameters are choosen do not\n");
 378                 BIO_printf(bio_err, "                         use the seed\n");
 379                 BIO_printf(bio_err, " -genkey                 generate ecdsa"
 380                                 " key\n");
 381                 BIO_printf(bio_err, " -rand file              files to use for"
 382                                 " random number input\n");
 383                 BIO_printf(bio_err, " -engine e               use engine e, "
 384                                 "possible a hardware device\n");
 385                 goto end;
 386                 }
 387
 388         ERR_load_crypto_strings();
 389
 390         in=BIO_new(BIO_s_file());
 391         out=BIO_new(BIO_s_file());
 392         if ((in == NULL) || (out == NULL))
 393                 {
 394                 ERR_print_errors(bio_err);
 395                 goto end;
 396                 }
 397
 398         if (infile == NULL)
 399                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 400         else
 401                 {
 402                 if (BIO_read_filename(in,infile) <= 0)
 403                         {
 404                         perror(infile);
 405                         goto end;
 406                         }
 407                 }
 408         if (outfile == NULL)
 409                 {
 410                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 411 #ifdef OPENSSL_SYS_VMS
 412                 {
 413                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 414                 out = BIO_push(tmpbio, out);
 415                 }
 416 #endif
 417                 }
 418         else
 419                 {
 420                 if (BIO_write_filename(out,outfile) <= 0)
 421                         {
 422                         perror(outfile);
 423                         goto end;
 424                         }
 425                 }
 426
 427         e = setup_engine(bio_err, engine, 0);
 428
 429         if (list_curves)
 430                 {
 431                 int counter=0;
 432
 433                 for (; counter < sizeof(curve_list)/sizeof(char *); counter++)
 434                         if (BIO_printf(bio_err, " %s\n", curve_list[counter])
 435                                 <= 0)
 436                                 goto end;
 437                 ret = 0;
 438                 goto end;
 439                 }
 440
 441         if (curve_name != NULL)
 442                 {
 443                 int nid = OBJ_sn2nid(curve_name);
 444
 445                 if (nid == 0)
 446                         {
 447                         BIO_printf(bio_err, "unknown curve name (%s)\n",
 448                                 curve_name);
 449                         goto end;
 450                         }
 451
 452                 group = EC_GROUP_new_by_nid(nid);
 453                 if (group == NULL)
 454                         {
 455                         BIO_printf(bio_err, "unable to create curve (%s)\n",
 456                                 curve_name);
 457                         goto end;
 458                         }
 459                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 460                 EC_GROUP_set_point_conversion_form(group, form);
 461                 }
 462         else if (informat == FORMAT_ASN1)
 463                 {
 464                 group = d2i_ECPKParameters_bio(in, NULL);
 465                 }
 466         else if (informat == FORMAT_PEM)
 467                 {
 468                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
 469                 }
 470         else
 471                 {
 472                 BIO_printf(bio_err, "bad input format specified\n");
 473                 goto end;
 474                 }
 475
 476         if (group == NULL)
 477                 {
 478                 BIO_printf(bio_err,
 479                         "unable to load elliptic curve parameters\n");
 480                 ERR_print_errors(bio_err);
 481                 goto end;
 482                 }
 483
 484         if (new_form)
 485                 EC_GROUP_set_point_conversion_form(group, form);
 486
 487         if (new_asn1_flag)
 488                 EC_GROUP_set_asn1_flag(group, asn1_flag);
 489
 490         if (no_seed)
 491                 {
 492                 EC_GROUP_set_seed(group, NULL, 0);
 493                 }
 494
 495         if (text)
 496                 {
 497                 if (!ECPKParameters_print(out, group, 0))
 498                         goto end;
 499                 }
 500
 501         if (check)
 502                 {
 503                 if (group == NULL)
 504                         BIO_printf(bio_err, "no elliptic curve parameters\n");
 505                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
 506                 if (!EC_GROUP_check(group, NULL))
 507                         {
 508                         BIO_printf(bio_err, "failed\n");
 509                         ERR_print_errors(bio_err);
 510                         }
 511                 else
 512                         BIO_printf(bio_err, "ok\n");
 513
 514                 }
 515
 516         if (C)
 517                 {
 518                 size_t  buf_len = 0, tmp_len = 0;
 519                 const EC_POINT *point;
 520                 int     is_prime, len = 0;
 521                 const EC_METHOD *meth = EC_GROUP_method_of(group);
 522
 523                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
 524                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
 525                     (ec_order = BN_new()) == NULL ||
 526                     (ec_cofactor = BN_new()) == NULL )
 527                         {
 528                         perror("OPENSSL_malloc");
 529                         goto end;
 530                         }
 531
 532                 is_prime = (EC_METHOD_get_field_type(meth) ==
 533                         NID_X9_62_prime_field);
 534
 535                 if (is_prime)
 536                         {
 537                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
 538                                 ec_b, NULL))
 539                                 goto end;
 540                         }
 541                 else
 542                         {
 543                         /* TODO */
 544                         goto end;
 545                         }
 546
 547                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
 548                         goto end;
 549                 if (!EC_POINT_point2bn(group, point,
 550                         EC_GROUP_get_point_conversion_form(group), ec_gen,
 551                         NULL))
 552                         goto end;
 553                 if (!EC_GROUP_get_order(group, ec_order, NULL))
 554                         goto end;
 555                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
 556                         goto end;
 557
 558                 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
 559                         !ec_order || !ec_cofactor)
 560                         goto end;
 561
 562                 len = BN_num_bits(ec_order);
 563
 564                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
 565                         buf_len = tmp_len;
 566                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
 567                         buf_len = tmp_len;
 568                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
 569                         buf_len = tmp_len;
 570                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
 571                         buf_len = tmp_len;
 572                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
 573                         buf_len = tmp_len;
 574                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
 575                         buf_len = tmp_len;
 576
 577                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
 578
 579                 if (buffer == NULL)
 580                         {
 581                         perror("OPENSSL_malloc");
 582                         goto end;
 583                         }
 584
 585                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
 586                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
 587                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
 588                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
 589                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
 590                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
 591                         buffer);
 592
 593                 BIO_printf(out, "\n\n");
 594
 595                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
 596                 BIO_printf(out, "\tint ok=0;\n");
 597                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
 598                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
 599                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
 600                                 "*tmp_3 = NULL;\n\n");
 601                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
 602                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
 603                                 "goto err;\n", len, len);
 604                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
 605                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
 606                                 "goto err;\n", len, len);
 607                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
 608                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
 609                                 "goto err;\n", len, len);
 610                 if (is_prime)
 611                         {
 612                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
 613                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
 614                                 "\n\t\tgoto err;\n\n");
 615                         }
 616                 else
 617                         {
 618                         /* TODO */
 619                         goto end;
 620                         }
 621                 BIO_printf(out, "\t/* build generator */\n");
 622                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
 623                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
 624                                 "\n\t\tgoto err;\n", len, len);
 625                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
 626                                 "NULL, NULL);\n");
 627                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
 628                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
 629                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
 630                                 "\n\t\tgoto err;\n", len, len);
 631                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
 632                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
 633                                 "\n\t\tgoto err;\n", len, len);
 634                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
 635                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
 636                 BIO_printf(out, "\n\tok=1;\n");
 637                 BIO_printf(out, "err:\n");
 638                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
 639                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
 640                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
 641                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
 642                 BIO_printf(out, "\tif (!ok)\n");
 643                 BIO_printf(out, "\t\t{\n");
 644                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
 645                 BIO_printf(out, "\t\tgroup = NULL;\n");
 646                 BIO_printf(out, "\t\t}\n");
 647                 BIO_printf(out, "\treturn(group);\n\t}\n");
 648         }
 649
 650         if (!noout)
 651                 {
 652                 if (outformat == FORMAT_ASN1)
 653                         i = i2d_ECPKParameters_bio(out, group);
 654                 else if (outformat == FORMAT_PEM)
 655                         i = PEM_write_bio_ECPKParameters(out, group);
 656                 else
 657                         {
 658                         BIO_printf(bio_err,"bad output format specified for"
 659                                 " outfile\n");
 660                         goto end;
 661                         }
 662                 if (!i)
 663                         {
 664                         BIO_printf(bio_err, "unable to write elliptic "
 665                                 "curve parameters\n");
 666                         ERR_print_errors(bio_err);
 667                         goto end;
 668                         }
 669                 }
 670
 671         if (need_rand)
 672                 {
 673                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 674                 if (inrand != NULL)
 675                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 676                                 app_RAND_load_files(inrand));
 677                 }
 678
 679         if (genkey)
 680                 {
 681                 EC_KEY *eckey = EC_KEY_new();
 682
 683                 if (eckey == NULL)
 684                         goto end;
 685
 686                 assert(need_rand);
 687
 688                 eckey->group = group;
 689
 690                 if (!EC_KEY_generate_key(eckey))
 691                         {
 692                         eckey->group = NULL;
 693                         EC_KEY_free(eckey);
 694                         goto end;
 695                         }
 696                 if (outformat == FORMAT_ASN1)
 697                         i = i2d_ECPrivateKey_bio(out, eckey);
 698                 else if (outformat == FORMAT_PEM)
 699                         i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
 700                                 NULL, 0, NULL, NULL);
 701                 else
 702                         {
 703                         BIO_printf(bio_err, "bad output format specified "
 704                                 "for outfile\n");
 705                         eckey->group = NULL;
 706                         EC_KEY_free(eckey);
 707                         goto end;
 708                         }
 709                 eckey->group = NULL;
 710                 EC_KEY_free(eckey);
 711                 }
 712
 713         if (need_rand)
 714                 app_RAND_write_file(NULL, bio_err);
 715
 716         ret=0;
 717 end:
 718         if (ec_p)
 719                 BN_free(ec_p);
 720         if (ec_a)
 721                 BN_free(ec_a);
 722         if (ec_b)
 723                 BN_free(ec_b);
 724         if (ec_gen)
 725                 BN_free(ec_gen);
 726         if (ec_order)
 727                 BN_free(ec_order);
 728         if (ec_cofactor)
 729                 BN_free(ec_cofactor);
 730         if (buffer)
 731                 OPENSSL_free(buffer);
 732         if (in != NULL)
 733                 BIO_free(in);
 734         if (out != NULL)
 735                 BIO_free_all(out);
 736         if (group != NULL)
 737                 EC_GROUP_free(group);
 738         apps_shutdown();
 739         EXIT(ret);
 740 }
 741
 742 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
 743         int len, unsigned char *buffer)
 744         {
 745         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
 746         if (BN_is_zero(in))
 747                 BIO_printf(out, "\n\t0x00");
 748         else
 749                 {
 750                 int i, l;
 751
 752                 l = BN_bn2bin(in, buffer);
 753                 for (i=0; i<l-1; i++)
 754                         {
 755                         if ((i%12) == 0)
 756                                 BIO_printf(out, "\n\t");
 757                         BIO_printf(out, "0x%02X,", buffer[i]);
 758                         }
 759                 if ((i%12) == 0)
 760                         BIO_printf(out, "\n\t");
 761                 BIO_printf(out, "0x%02X", buffer[i]);
 762                 }
 763         BIO_printf(out, "\n\t};\n\n");
 764         return 1;
 765         }
 766 #endif