apps/ec.c

   1 /* apps/ec.c */
   2 /*
   3  * 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 #ifndef OPENSSL_NO_EC
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include "apps.h"
  64 #include <openssl/bio.h>
  65 #include <openssl/err.h>
  66 #include <openssl/evp.h>
  67 #include <openssl/pem.h>
  68
  69 #undef PROG
  70 #define PROG    ec_main
  71
  72 /* -inform arg    - input format - default PEM (one of DER, NET or PEM)
  73  * -outform arg   - output format - default PEM
  74  * -in arg        - input file - default stdin
  75  * -out arg       - output file - default stdout
  76  * -des           - encrypt output if PEM format with DES in cbc mode
  77  * -text          - print a text version
  78  * -param_out     - print the elliptic curve parameters
  79  * -conv_form arg - specifies the point encoding form
  80  * -param_enc arg - specifies the parameter encoding
  81  */
  82
  83 int MAIN(int, char **);
  84
  85 int MAIN(int argc, char **argv)
  86 {
  87         ENGINE  *e = NULL;
  88         int     ret = 1;
  89         EC_KEY  *eckey = NULL;
  90         int     i, badops = 0;
  91         const EVP_CIPHER *enc = NULL;
  92         BIO     *in = NULL, *out = NULL;
  93         int     informat, outformat, text=0, noout=0;
  94         int     pubin = 0, pubout = 0, param_out = 0;
  95         char    *infile, *outfile, *prog, *engine;
  96         char    *passargin = NULL, *passargout = NULL;
  97         char    *passin = NULL, *passout = NULL;
  98         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
  99         int     new_form = 0;
 100         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 101         int     new_asn1_flag = 0;
 102
 103         apps_startup();
 104
 105         if (bio_err == NULL)
 106                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 107                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 108
 109         if (!load_config(bio_err, NULL))
 110                 goto end;
 111
 112         engine = NULL;
 113         infile = NULL;
 114         outfile = NULL;
 115         informat = FORMAT_PEM;
 116         outformat = FORMAT_PEM;
 117
 118         prog = argv[0];
 119         argc--;
 120         argv++;
 121         while (argc >= 1)
 122                 {
 123                 if (strcmp(*argv,"-inform") == 0)
 124                         {
 125                         if (--argc < 1) goto bad;
 126                         informat=str2fmt(*(++argv));
 127                         }
 128                 else if (strcmp(*argv,"-outform") == 0)
 129                         {
 130                         if (--argc < 1) goto bad;
 131                         outformat=str2fmt(*(++argv));
 132                         }
 133                 else if (strcmp(*argv,"-in") == 0)
 134                         {
 135                         if (--argc < 1) goto bad;
 136                         infile= *(++argv);
 137                         }
 138                 else if (strcmp(*argv,"-out") == 0)
 139                         {
 140                         if (--argc < 1) goto bad;
 141                         outfile= *(++argv);
 142                         }
 143                 else if (strcmp(*argv,"-passin") == 0)
 144                         {
 145                         if (--argc < 1) goto bad;
 146                         passargin= *(++argv);
 147                         }
 148                 else if (strcmp(*argv,"-passout") == 0)
 149                         {
 150                         if (--argc < 1) goto bad;
 151                         passargout= *(++argv);
 152                         }
 153                 else if (strcmp(*argv, "-engine") == 0)
 154                         {
 155                         if (--argc < 1) goto bad;
 156                         engine= *(++argv);
 157                         }
 158                 else if (strcmp(*argv, "-noout") == 0)
 159                         noout = 1;
 160                 else if (strcmp(*argv, "-text") == 0)
 161                         text = 1;
 162                 else if (strcmp(*argv, "-conv_form") == 0)
 163                         {
 164                         if (--argc < 1)
 165                                 goto bad;
 166                         ++argv;
 167                         new_form = 1;
 168                         if (strcmp(*argv, "compressed") == 0)
 169                                 form = POINT_CONVERSION_COMPRESSED;
 170                         else if (strcmp(*argv, "uncompressed") == 0)
 171                                 form = POINT_CONVERSION_UNCOMPRESSED;
 172                         else if (strcmp(*argv, "hybrid") == 0)
 173                                 form = POINT_CONVERSION_HYBRID;
 174                         else
 175                                 goto bad;
 176                         }
 177                 else if (strcmp(*argv, "-param_enc") == 0)
 178                         {
 179                         if (--argc < 1)
 180                                 goto bad;
 181                         ++argv;
 182                         new_asn1_flag = 1;
 183                         if (strcmp(*argv, "named_curve") == 0)
 184                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 185                         else if (strcmp(*argv, "explicit") == 0)
 186                                 asn1_flag = 0;
 187                         else
 188                                 goto bad;
 189                         }
 190                 else if (strcmp(*argv, "-param_out") == 0)
 191                         param_out = 1;
 192                 else if (strcmp(*argv, "-pubin") == 0)
 193                         pubin=1;
 194                 else if (strcmp(*argv, "-pubout") == 0)
 195                         pubout=1;
 196                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 197                         {
 198                         BIO_printf(bio_err, "unknown option %s\n", *argv);
 199                         badops=1;
 200                         break;
 201                         }
 202                 argc--;
 203                 argv++;
 204                 }
 205
 206         if (badops)
 207                 {
 208 bad:
 209                 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 210                 BIO_printf(bio_err, "where options are\n");
 211                 BIO_printf(bio_err, " -inform arg     input format - "
 212                                 "DER or PEM\n");
 213                 BIO_printf(bio_err, " -outform arg    output format - "
 214                                 "DER or PEM\n");
 215                 BIO_printf(bio_err, " -in arg         input file\n");
 216                 BIO_printf(bio_err, " -passin arg     input file pass "
 217                                 "phrase source\n");
 218                 BIO_printf(bio_err, " -out arg        output file\n");
 219                 BIO_printf(bio_err, " -passout arg    output file pass "
 220                                 "phrase source\n");
 221                 BIO_printf(bio_err, " -engine e       use engine e, "
 222                                 "possibly a hardware device.\n");
 223                 BIO_printf(bio_err, " -des            encrypt PEM output, "
 224                                 "instead of 'des' every other \n"
 225                                 "                 cipher "
 226                                 "supported by OpenSSL can be used\n");
 227                 BIO_printf(bio_err, " -text           print the key\n");
 228                 BIO_printf(bio_err, " -noout          don't print key out\n");
 229                 BIO_printf(bio_err, " -param_out      print the elliptic "
 230                                 "curve parameters\n");
 231                 BIO_printf(bio_err, " -conv_form arg  specifies the "
 232                                 "point conversion form \n");
 233                 BIO_printf(bio_err, "                 possible values:"
 234                                 " compressed\n");
 235                 BIO_printf(bio_err, "                                 "
 236                                 " uncompressed (default)\n");
 237                 BIO_printf(bio_err, "                                  "
 238                                 " hybrid\n");
 239                 BIO_printf(bio_err, " -param_enc arg  specifies the way"
 240                                 " the ec parameters are encoded\n");
 241                 BIO_printf(bio_err, "                 in the asn1 der "
 242                                 "encoding\n");
 243                 BIO_printf(bio_err, "                 possilbe values:"
 244                                 " named_curve (default)\n");
 245                 BIO_printf(bio_err,"                                  "
 246                                 "explicit\n");
 247                 goto end;
 248                 }
 249
 250         ERR_load_crypto_strings();
 251
 252         e = setup_engine(bio_err, engine, 0);
 253
 254         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
 255                 {
 256                 BIO_printf(bio_err, "Error getting passwords\n");
 257                 goto end;
 258                 }
 259
 260         in = BIO_new(BIO_s_file());
 261         out = BIO_new(BIO_s_file());
 262         if ((in == NULL) || (out == NULL))
 263                 {
 264                 ERR_print_errors(bio_err);
 265                 goto end;
 266                 }
 267
 268         if (infile == NULL)
 269                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 270         else
 271                 {
 272                 if (BIO_read_filename(in, infile) <= 0)
 273                         {
 274                         perror(infile);
 275                         goto end;
 276                         }
 277                 }
 278
 279         BIO_printf(bio_err, "read EC key\n");
 280         if (informat == FORMAT_ASN1)
 281                 {
 282                 if (pubin)
 283                         eckey = d2i_EC_PUBKEY_bio(in, NULL);
 284                 else
 285                         eckey = d2i_ECPrivateKey_bio(in, NULL);
 286                 }
 287         else if (informat == FORMAT_PEM)
 288                 {
 289                 if (pubin)
 290                         eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
 291                                 NULL);
 292                 else
 293                         eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
 294                                 passin);
 295                 }
 296         else
 297                 {
 298                 BIO_printf(bio_err, "bad input format specified for key\n");
 299                 goto end;
 300                 }
 301         if (eckey == NULL)
 302                 {
 303                 BIO_printf(bio_err,"unable to load Key\n");
 304                 ERR_print_errors(bio_err);
 305                 goto end;
 306                 }
 307
 308         if (outfile == NULL)
 309                 {
 310                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 311 #ifdef OPENSSL_SYS_VMS
 312                         {
 313                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 314                         out = BIO_push(tmpbio, out);
 315                         }
 316 #endif
 317                 }
 318         else
 319                 {
 320                 if (BIO_write_filename(out, outfile) <= 0)
 321                         {
 322                         perror(outfile);
 323                         goto end;
 324                         }
 325                 }
 326
 327         if (new_form)
 328                 {
 329                 EC_GROUP_set_point_conversion_form(eckey->group, form);
 330                 eckey->conv_form = form;
 331                 }
 332
 333         if (new_asn1_flag)
 334                 EC_GROUP_set_asn1_flag(eckey->group, asn1_flag);
 335
 336         if (text)
 337                 if (!EC_KEY_print(out, eckey, 0))
 338                         {
 339                         perror(outfile);
 340                         ERR_print_errors(bio_err);
 341                         goto end;
 342                         }
 343
 344         if (noout)
 345                 goto end;
 346
 347         BIO_printf(bio_err, "writing EC key\n");
 348         if (outformat == FORMAT_ASN1)
 349                 {
 350                 if (param_out)
 351                         i = i2d_ECPKParameters_bio(out, eckey->group);
 352                 else if (pubin || pubout)
 353                         i = i2d_EC_PUBKEY_bio(out, eckey);
 354                 else
 355                         i = i2d_ECPrivateKey_bio(out, eckey);
 356                 }
 357         else if (outformat == FORMAT_PEM)
 358                 {
 359                 if (param_out)
 360                         i = PEM_write_bio_ECPKParameters(out, eckey->group);
 361                 else if (pubin || pubout)
 362                         i = PEM_write_bio_EC_PUBKEY(out, eckey);
 363                 else
 364                         i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
 365                                                 NULL, 0, NULL, passout);
 366                 }
 367         else
 368                 {
 369                 BIO_printf(bio_err, "bad output format specified for "
 370                         "outfile\n");
 371                 goto end;
 372                 }
 373
 374         if (!i)
 375                 {
 376                 BIO_printf(bio_err, "unable to write private key\n");
 377                 ERR_print_errors(bio_err);
 378                 }
 379         else
 380                 ret=0;
 381 end:
 382         if (in)
 383                 BIO_free(in);
 384         if (out)
 385                 BIO_free_all(out);
 386         if (eckey)
 387                 EC_KEY_free(eckey);
 388         if (passin)
 389                 OPENSSL_free(passin);
 390         if (passout)
 391                 OPENSSL_free(passout);
 392         apps_shutdown();
 393         OPENSSL_EXIT(ret);
 394 }
 395 #endif