apps/ec.c

   1 /* apps/ec.c */
   2 /*
   3  * Written by Nils Larsch for the OpenSSL project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1998-2005 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 #include <openssl/opensslconf.h>
  60 #ifndef OPENSSL_NO_EC
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/evp.h>
  68 #include <openssl/pem.h>
  69
  70 #undef PROG
  71 #define PROG    ec_main
  72
  73 /* -inform arg    - input format - default PEM (one of DER, NET or PEM)
  74  * -outform arg   - output format - default PEM
  75  * -in arg        - input file - default stdin
  76  * -out arg       - output file - default stdout
  77  * -des           - encrypt output if PEM format with DES in cbc mode
  78  * -text          - print a text version
  79  * -param_out     - print the elliptic curve parameters
  80  * -conv_form arg - specifies the point encoding form
  81  * -param_enc arg - specifies the parameter encoding
  82  */
  83
  84 int MAIN(int, char **);
  85
  86 int MAIN(int argc, char **argv)
  87 {
  88         int     ret = 1;
  89         EC_KEY  *eckey = NULL;
  90         const EC_GROUP *group;
  91         int     i, badops = 0;
  92         const EVP_CIPHER *enc = NULL;
  93         BIO     *in = NULL, *out = NULL;
  94         int     informat, outformat, text=0, noout=0;
  95         int     pubin = 0, pubout = 0, param_out = 0;
  96         char    *infile, *outfile, *prog, *engine;
  97         char    *passargin = NULL, *passargout = NULL;
  98         char    *passin = NULL, *passout = NULL;
  99         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 100         int     new_form = 0;
 101         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 102         int     new_asn1_flag = 0;
 103
 104         apps_startup();
 105
 106         if (bio_err == NULL)
 107                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 108                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 109
 110         if (!load_config(bio_err, NULL))
 111                 goto end;
 112
 113         engine = NULL;
 114         infile = NULL;
 115         outfile = NULL;
 116         informat = FORMAT_PEM;
 117         outformat = FORMAT_PEM;
 118
 119         prog = argv[0];
 120         argc--;
 121         argv++;
 122         while (argc >= 1)
 123                 {
 124                 if (strcmp(*argv,"-inform") == 0)
 125                         {
 126                         if (--argc < 1) goto bad;
 127                         informat=str2fmt(*(++argv));
 128                         }
 129                 else if (strcmp(*argv,"-outform") == 0)
 130                         {
 131                         if (--argc < 1) goto bad;
 132                         outformat=str2fmt(*(++argv));
 133                         }
 134                 else if (strcmp(*argv,"-in") == 0)
 135                         {
 136                         if (--argc < 1) goto bad;
 137                         infile= *(++argv);
 138                         }
 139                 else if (strcmp(*argv,"-out") == 0)
 140                         {
 141                         if (--argc < 1) goto bad;
 142                         outfile= *(++argv);
 143                         }
 144                 else if (strcmp(*argv,"-passin") == 0)
 145                         {
 146                         if (--argc < 1) goto bad;
 147                         passargin= *(++argv);
 148                         }
 149                 else if (strcmp(*argv,"-passout") == 0)
 150                         {
 151                         if (--argc < 1) goto bad;
 152                         passargout= *(++argv);
 153                         }
 154                 else if (strcmp(*argv, "-engine") == 0)
 155                         {
 156                         if (--argc < 1) goto bad;
 157                         engine= *(++argv);
 158                         }
 159                 else if (strcmp(*argv, "-noout") == 0)
 160                         noout = 1;
 161                 else if (strcmp(*argv, "-text") == 0)
 162                         text = 1;
 163                 else if (strcmp(*argv, "-conv_form") == 0)
 164                         {
 165                         if (--argc < 1)
 166                                 goto bad;
 167                         ++argv;
 168                         new_form = 1;
 169                         if (strcmp(*argv, "compressed") == 0)
 170                                 form = POINT_CONVERSION_COMPRESSED;
 171                         else if (strcmp(*argv, "uncompressed") == 0)
 172                                 form = POINT_CONVERSION_UNCOMPRESSED;
 173                         else if (strcmp(*argv, "hybrid") == 0)
 174                                 form = POINT_CONVERSION_HYBRID;
 175                         else
 176                                 goto bad;
 177                         }
 178                 else if (strcmp(*argv, "-param_enc") == 0)
 179                         {
 180                         if (--argc < 1)
 181                                 goto bad;
 182                         ++argv;
 183                         new_asn1_flag = 1;
 184                         if (strcmp(*argv, "named_curve") == 0)
 185                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 186                         else if (strcmp(*argv, "explicit") == 0)
 187                                 asn1_flag = 0;
 188                         else
 189                                 goto bad;
 190                         }
 191                 else if (strcmp(*argv, "-param_out") == 0)
 192                         param_out = 1;
 193                 else if (strcmp(*argv, "-pubin") == 0)
 194                         pubin=1;
 195                 else if (strcmp(*argv, "-pubout") == 0)
 196                         pubout=1;
 197                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 198                         {
 199                         BIO_printf(bio_err, "unknown option %s\n", *argv);
 200                         badops=1;
 201                         break;
 202                         }
 203                 argc--;
 204                 argv++;
 205                 }
 206
 207         if (badops)
 208                 {
 209 bad:
 210                 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 211                 BIO_printf(bio_err, "where options are\n");
 212                 BIO_printf(bio_err, " -inform arg     input format - "
 213                                 "DER or PEM\n");
 214                 BIO_printf(bio_err, " -outform arg    output format - "
 215                                 "DER or PEM\n");
 216                 BIO_printf(bio_err, " -in arg         input file\n");
 217                 BIO_printf(bio_err, " -passin arg     input file pass "
 218                                 "phrase source\n");
 219                 BIO_printf(bio_err, " -out arg        output file\n");
 220                 BIO_printf(bio_err, " -passout arg    output file pass "
 221                                 "phrase source\n");
 222                 BIO_printf(bio_err, " -engine e       use engine e, "
 223                                 "possibly a hardware device.\n");
 224                 BIO_printf(bio_err, " -des            encrypt PEM output, "
 225                                 "instead of 'des' every other \n"
 226                                 "                 cipher "
 227                                 "supported by OpenSSL can be used\n");
 228                 BIO_printf(bio_err, " -text           print the key\n");
 229                 BIO_printf(bio_err, " -noout          don't print key out\n");
 230                 BIO_printf(bio_err, " -param_out      print the elliptic "
 231                                 "curve parameters\n");
 232                 BIO_printf(bio_err, " -conv_form arg  specifies the "
 233                                 "point conversion form \n");
 234                 BIO_printf(bio_err, "                 possible values:"
 235                                 " compressed\n");
 236                 BIO_printf(bio_err, "                                 "
 237                                 " uncompressed (default)\n");
 238                 BIO_printf(bio_err, "                                  "
 239                                 " hybrid\n");
 240                 BIO_printf(bio_err, " -param_enc arg  specifies the way"
 241                                 " the ec parameters are encoded\n");
 242                 BIO_printf(bio_err, "                 in the asn1 der "
 243                                 "encoding\n");
 244                 BIO_printf(bio_err, "                 possible values:"
 245                                 " named_curve (default)\n");
 246                 BIO_printf(bio_err,"                                  "
 247                                 "explicit\n");
 248                 goto end;
 249                 }
 250
 251         ERR_load_crypto_strings();
 252
 253 #ifndef OPENSSL_NO_ENGINE
 254         setup_engine(bio_err, engine, 0);
 255 #endif
 256
 257         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
 258                 {
 259                 BIO_printf(bio_err, "Error getting passwords\n");
 260                 goto end;
 261                 }
 262
 263         in = BIO_new(BIO_s_file());
 264         out = BIO_new(BIO_s_file());
 265         if ((in == NULL) || (out == NULL))
 266                 {
 267                 ERR_print_errors(bio_err);
 268                 goto end;
 269                 }
 270
 271         if (infile == NULL)
 272                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 273         else
 274                 {
 275                 if (BIO_read_filename(in, infile) <= 0)
 276                         {
 277                         perror(infile);
 278                         goto end;
 279                         }
 280                 }
 281
 282         BIO_printf(bio_err, "read EC key\n");
 283         if (informat == FORMAT_ASN1)
 284                 {
 285                 if (pubin)
 286                         eckey = d2i_EC_PUBKEY_bio(in, NULL);
 287                 else
 288                         eckey = d2i_ECPrivateKey_bio(in, NULL);
 289                 }
 290         else if (informat == FORMAT_PEM)
 291                 {
 292                 if (pubin)
 293                         eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
 294                                 NULL);
 295                 else
 296                         eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
 297                                 passin);
 298                 }
 299         else
 300                 {
 301                 BIO_printf(bio_err, "bad input format specified for key\n");
 302                 goto end;
 303                 }
 304         if (eckey == NULL)
 305                 {
 306                 BIO_printf(bio_err,"unable to load Key\n");
 307                 ERR_print_errors(bio_err);
 308                 goto end;
 309                 }
 310
 311         if (outfile == NULL)
 312                 {
 313                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 314 #ifdef OPENSSL_SYS_VMS
 315                         {
 316                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 317                         out = BIO_push(tmpbio, out);
 318                         }
 319 #endif
 320                 }
 321         else
 322                 {
 323                 if (BIO_write_filename(out, outfile) <= 0)
 324                         {
 325                         perror(outfile);
 326                         goto end;
 327                         }
 328                 }
 329
 330         group = EC_KEY_get0_group(eckey);
 331
 332         if (new_form)
 333                 EC_KEY_set_conv_form(eckey, form);
 334
 335         if (new_asn1_flag)
 336                 EC_KEY_set_asn1_flag(eckey, asn1_flag);
 337
 338         if (text)
 339                 if (!EC_KEY_print(out, eckey, 0))
 340                         {
 341                         perror(outfile);
 342                         ERR_print_errors(bio_err);
 343                         goto end;
 344                         }
 345
 346         if (noout)
 347                 {
 348                 ret = 0;
 349                 goto end;
 350                 }
 351
 352         BIO_printf(bio_err, "writing EC key\n");
 353         if (outformat == FORMAT_ASN1)
 354                 {
 355                 if (param_out)
 356                         i = i2d_ECPKParameters_bio(out, group);
 357                 else if (pubin || pubout)
 358                         i = i2d_EC_PUBKEY_bio(out, eckey);
 359                 else
 360                         i = i2d_ECPrivateKey_bio(out, eckey);
 361                 }
 362         else if (outformat == FORMAT_PEM)
 363                 {
 364                 if (param_out)
 365                         i = PEM_write_bio_ECPKParameters(out, group);
 366                 else if (pubin || pubout)
 367                         i = PEM_write_bio_EC_PUBKEY(out, eckey);
 368                 else
 369                         i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
 370                                                 NULL, 0, NULL, passout);
 371                 }
 372         else
 373                 {
 374                 BIO_printf(bio_err, "bad output format specified for "
 375                         "outfile\n");
 376                 goto end;
 377                 }
 378
 379         if (!i)
 380                 {
 381                 BIO_printf(bio_err, "unable to write private key\n");
 382                 ERR_print_errors(bio_err);
 383                 }
 384         else
 385                 ret=0;
 386 end:
 387         if (in)
 388                 BIO_free(in);
 389         if (out)
 390                 BIO_free_all(out);
 391         if (eckey)
 392                 EC_KEY_free(eckey);
 393         if (passin)
 394                 OPENSSL_free(passin);
 395         if (passout)
 396                 OPENSSL_free(passout);
 397         apps_shutdown();
 398         OPENSSL_EXIT(ret);
 399 }
 400 #else /* !OPENSSL_NO_EC */
 401
 402 # if PEDANTIC
 403 static void *dummy=&dummy;
 404 # endif
 405
 406 #endif