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