apps/ecdsa.c

   1 /* apps/ecdsa.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 #ifndef OPENSSL_NO_ECDSA
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include "apps.h"
  61 #include <openssl/bio.h>
  62 #include <openssl/err.h>
  63 #include <openssl/ecdsa.h>
  64 #include <openssl/evp.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/pem.h>
  67
  68 #undef PROG
  69 #define PROG    ecdsa_main
  70
  71 /* -inform arg    - input format - default PEM (one of DER, NET or PEM)
  72  * -outform arg   - output format - default PEM
  73  * -in arg        - input file - default stdin
  74  * -out arg       - output file - default stdout
  75  * -des           - encrypt output if PEM format with DES in cbc mode
  76  * -text          - print a text version
  77  * -param_out     - print the elliptic curve parameters
  78  * -conv_form arg - specifies the point encoding form
  79  * -param_enc arg - specifies the parameter encoding
  80  */
  81
  82 int MAIN(int, char **);
  83
  84 int MAIN(int argc, char **argv)
  85 {
  86         ENGINE  *e = NULL;
  87         int     ret = 1;
  88         ECDSA   *ecdsa = NULL;
  89         int     i, badops = 0;
  90         const EVP_CIPHER *enc = NULL;
  91         BIO     *in = NULL, *out = NULL;
  92         int     informat, outformat, text=0, noout=0;
  93         int     pubin = 0, pubout = 0, param_out = 0;
  94         char    *infile, *outfile, *prog, *engine;
  95         char    *passargin = NULL, *passargout = NULL;
  96         char    *passin = NULL, *passout = NULL;
  97         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
  98         int     new_form = 0;
  99         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 100         int     new_asn1_flag = 0;
 101
 102         apps_startup();
 103
 104         if (bio_err == NULL)
 105                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 106                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 107
 108         if (!load_config(bio_err, NULL))
 109                 goto end;
 110
 111         engine = NULL;
 112         infile = NULL;
 113         outfile = NULL;
 114         informat = FORMAT_PEM;
 115         outformat = FORMAT_PEM;
 116
 117         prog = argv[0];
 118         argc--;
 119         argv++;
 120         while (argc >= 1)
 121                 {
 122                 if (strcmp(*argv,"-inform") == 0)
 123                         {
 124                         if (--argc < 1) goto bad;
 125                         informat=str2fmt(*(++argv));
 126                         }
 127                 else if (strcmp(*argv,"-outform") == 0)
 128                         {
 129                         if (--argc < 1) goto bad;
 130                         outformat=str2fmt(*(++argv));
 131                         }
 132                 else if (strcmp(*argv,"-in") == 0)
 133                         {
 134                         if (--argc < 1) goto bad;
 135                         infile= *(++argv);
 136                         }
 137                 else if (strcmp(*argv,"-out") == 0)
 138                         {
 139                         if (--argc < 1) goto bad;
 140                         outfile= *(++argv);
 141                         }
 142                 else if (strcmp(*argv,"-passin") == 0)
 143                         {
 144                         if (--argc < 1) goto bad;
 145                         passargin= *(++argv);
 146                         }
 147                 else if (strcmp(*argv,"-passout") == 0)
 148                         {
 149                         if (--argc < 1) goto bad;
 150                         passargout= *(++argv);
 151                         }
 152                 else if (strcmp(*argv, "-engine") == 0)
 153                         {
 154                         if (--argc < 1) goto bad;
 155                         engine= *(++argv);
 156                         }
 157                 else if (strcmp(*argv, "-noout") == 0)
 158                         noout = 1;
 159                 else if (strcmp(*argv, "-text") == 0)
 160                         text = 1;
 161                 else if (strcmp(*argv, "-conv_form") == 0)
 162                         {
 163                         if (--argc < 1)
 164                                 goto bad;
 165                         ++argv;
 166                         new_form = 1;
 167                         if (strcmp(*argv, "compressed") == 0)
 168                                 form = POINT_CONVERSION_COMPRESSED;
 169                         else if (strcmp(*argv, "uncompressed") == 0)
 170                                 form = POINT_CONVERSION_UNCOMPRESSED;
 171                         else if (strcmp(*argv, "hybrid") == 0)
 172                                 form = POINT_CONVERSION_HYBRID;
 173                         else
 174                                 goto bad;
 175                         }
 176                 else if (strcmp(*argv, "-param_enc") == 0)
 177                         {
 178                         if (--argc < 1)
 179                                 goto bad;
 180                         ++argv;
 181                         new_asn1_flag = 1;
 182                         if (strcmp(*argv, "named_curve") == 0)
 183                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 184                         else if (strcmp(*argv, "explicit") == 0)
 185                                 asn1_flag = 0;
 186                         else
 187                                 goto bad;
 188                         }
 189                 else if (strcmp(*argv, "-param_out") == 0)
 190                         param_out = 1;
 191                 else if (strcmp(*argv, "-pubin") == 0)
 192                         pubin=1;
 193                 else if (strcmp(*argv, "-pubout") == 0)
 194                         pubout=1;
 195                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 196                         {
 197                         BIO_printf(bio_err, "unknown option %s\n", *argv);
 198                         badops=1;
 199                         break;
 200                         }
 201                 argc--;
 202                 argv++;
 203                 }
 204
 205         if (badops)
 206                 {
 207 bad:
 208                 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 209                 BIO_printf(bio_err, "where options are\n");
 210                 BIO_printf(bio_err, " -inform arg     input format - "
 211                                 "DER or PEM\n");
 212                 BIO_printf(bio_err, " -outform arg    output format - "
 213                                 "DER or PEM\n");
 214                 BIO_printf(bio_err, " -in arg         input file\n");
 215                 BIO_printf(bio_err, " -passin arg     input file pass "
 216                                 "phrase source\n");
 217                 BIO_printf(bio_err, " -out arg        output file\n");
 218                 BIO_printf(bio_err, " -passout arg    output file pass "
 219                                 "phrase source\n");
 220                 BIO_printf(bio_err, " -engine e       use engine e, "
 221                                 "possibly a hardware device.\n");
 222                 BIO_printf(bio_err, " -des            encrypt PEM output, "
 223                                 "instead of 'des' every other \n"
 224                                 "                 cipher "
 225                                 "supported by OpenSSL can be used\n");
 226                 BIO_printf(bio_err, " -text           print the key\n");
 227                 BIO_printf(bio_err, " -noout          don't print key out\n");
 228                 BIO_printf(bio_err, " -param_out      print the elliptic "
 229                                 "curve parameters\n");
 230                 BIO_printf(bio_err, " -conv_form arg  specifies the "
 231                                 "point conversion form \n");
 232                 BIO_printf(bio_err, "                 possible values :"
 233                                 " compressed\n");
 234                 BIO_printf(bio_err, "                                  "
 235                                 " uncompressed (default)\n");
 236                 BIO_printf(bio_err, "                                  "
 237                                 " hybrid\n");
 238                 BIO_printf(bio_err, " -param_enc arg  specifies the way"
 239                                 " the ec parameters are encoded\n");
 240                 BIO_printf(bio_err, "                 in the asn1 der "
 241                                 "encoding\n");
 242                 BIO_printf(bio_err, "                 possilbe values :"
 243                                 " named_curve (default)\n");
 244                 BIO_printf(bio_err,"                                   "
 245                                 "explicit\n");
 246                 goto end;
 247                 }
 248
 249         ERR_load_crypto_strings();
 250
 251         e = setup_engine(bio_err, engine, 0);
 252
 253         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
 254                 {
 255                 BIO_printf(bio_err, "Error getting passwords\n");
 256                 goto end;
 257                 }
 258
 259         in = BIO_new(BIO_s_file());
 260         out = BIO_new(BIO_s_file());
 261         if ((in == NULL) || (out == NULL))
 262                 {
 263                 ERR_print_errors(bio_err);
 264                 goto end;
 265                 }
 266
 267         if (infile == NULL)
 268                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 269         else
 270                 {
 271                 if (BIO_read_filename(in, infile) <= 0)
 272                         {
 273                         perror(infile);
 274                         goto end;
 275                         }
 276                 }
 277
 278         BIO_printf(bio_err, "read ECDSA key\n");
 279         if (informat == FORMAT_ASN1)
 280                 {
 281                 if (pubin)
 282                         ecdsa = d2i_ECDSA_PUBKEY_bio(in, NULL);
 283                 else
 284                         ecdsa = d2i_ECDSAPrivateKey_bio(in, NULL);
 285                 }
 286         else if (informat == FORMAT_PEM)
 287                 {
 288                 if (pubin)
 289                         ecdsa = PEM_read_bio_ECDSA_PUBKEY(in, NULL, NULL,
 290                                 NULL);
 291                 else
 292                         ecdsa = PEM_read_bio_ECDSAPrivateKey(in, NULL, NULL,
 293                                 passin);
 294                 }
 295         else
 296                 {
 297                 BIO_printf(bio_err, "bad input format specified for key\n");
 298                 goto end;
 299                 }
 300         if (ecdsa == NULL)
 301                 {
 302                 BIO_printf(bio_err,"unable to load Key\n");
 303                 ERR_print_errors(bio_err);
 304                 goto end;
 305                 }
 306
 307         if (outfile == NULL)
 308                 {
 309                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 310 #ifdef OPENSSL_SYS_VMS
 311                         {
 312                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 313                         out = BIO_push(tmpbio, out);
 314                         }
 315 #endif
 316                 }
 317         else
 318                 {
 319                 if (BIO_write_filename(out, outfile) <= 0)
 320                         {
 321                         perror(outfile);
 322                         goto end;
 323                         }
 324                 }
 325
 326         if (new_form)
 327                 {
 328                 EC_GROUP_set_point_conversion_form(ecdsa->group, form);
 329                 ECDSA_set_conversion_form(ecdsa, form);
 330                 }
 331
 332         if (new_asn1_flag)
 333                 EC_GROUP_set_asn1_flag(ecdsa->group, asn1_flag);
 334
 335         if (text)
 336                 if (!ECDSA_print(out, ecdsa, 0))
 337                         {
 338                         perror(outfile);
 339                         ERR_print_errors(bio_err);
 340                         goto end;
 341                         }
 342
 343         if (noout)
 344                 goto end;
 345
 346         BIO_printf(bio_err, "writing ECDSA key\n");
 347         if (outformat == FORMAT_ASN1)
 348                 {
 349                 if (param_out)
 350                         i = i2d_ECPKParameters_bio(out, ecdsa->group);
 351                 else if (pubin || pubout)
 352                         i = i2d_ECDSA_PUBKEY_bio(out, ecdsa);
 353                 else
 354                         i = i2d_ECDSAPrivateKey_bio(out, ecdsa);
 355                 }
 356         else if (outformat == FORMAT_PEM)
 357                 {
 358                 if (param_out)
 359                         i = PEM_write_bio_ECPKParameters(out, ecdsa->group);
 360                 else if (pubin || pubout)
 361                         i = PEM_write_bio_ECDSA_PUBKEY(out, ecdsa);
 362                 else
 363                         i = PEM_write_bio_ECDSAPrivateKey(out, ecdsa, enc,
 364                                                 NULL, 0, NULL, passout);
 365                 }
 366         else
 367                 {
 368                 BIO_printf(bio_err, "bad output format specified for "
 369                         "outfile\n");
 370                 goto end;
 371                 }
 372
 373         if (!i)
 374                 {
 375                 BIO_printf(bio_err, "unable to write private key\n");
 376                 ERR_print_errors(bio_err);
 377                 }
 378         else
 379                 ret=0;
 380 end:
 381         if (in)
 382                 BIO_free(in);
 383         if (out)
 384                 BIO_free_all(out);
 385         if (ecdsa)
 386                 ECDSA_free(ecdsa);
 387         if (passin)
 388                 OPENSSL_free(passin);
 389         if (passout)
 390                 OPENSSL_free(passout);
 391         apps_shutdown();
 392         EXIT(ret);
 393 }
 394 #endif