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 #ifndef OPENSSL_NO_ENGINE
  89         ENGINE  *e = NULL;
  90 #endif
  91         int     ret = 1;
  92         EC_KEY  *eckey = NULL;
  93         const EC_GROUP *group;
  94         int     i, badops = 0;
  95         const EVP_CIPHER *enc = NULL;
  96         BIO     *in = NULL, *out = NULL;
  97         int     informat, outformat, text=0, noout=0;
  98         int     pubin = 0, pubout = 0, param_out = 0;
  99         char    *infile, *outfile, *prog, *engine;
 100         char    *passargin = NULL, *passargout = NULL;
 101         char    *passin = NULL, *passout = NULL;
 102         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 103         int     new_form = 0;
 104         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 105         int     new_asn1_flag = 0;
 106
 107         apps_startup();
 108
 109         if (bio_err == NULL)
 110                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 111                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 112
 113         if (!load_config(bio_err, NULL))
 114                 goto end;
 115
 116         engine = NULL;
 117         infile = NULL;
 118         outfile = NULL;
 119         informat = FORMAT_PEM;
 120         outformat = FORMAT_PEM;
 121
 122         prog = argv[0];
 123         argc--;
 124         argv++;
 125         while (argc >= 1)
 126                 {
 127                 if (strcmp(*argv,"-inform") == 0)
 128                         {
 129                         if (--argc < 1) goto bad;
 130                         informat=str2fmt(*(++argv));
 131                         }
 132                 else if (strcmp(*argv,"-outform") == 0)
 133                         {
 134                         if (--argc < 1) goto bad;
 135                         outformat=str2fmt(*(++argv));
 136                         }
 137                 else if (strcmp(*argv,"-in") == 0)
 138                         {
 139                         if (--argc < 1) goto bad;
 140                         infile= *(++argv);
 141                         }
 142                 else if (strcmp(*argv,"-out") == 0)
 143                         {
 144                         if (--argc < 1) goto bad;
 145                         outfile= *(++argv);
 146                         }
 147                 else if (strcmp(*argv,"-passin") == 0)
 148                         {
 149                         if (--argc < 1) goto bad;
 150                         passargin= *(++argv);
 151                         }
 152                 else if (strcmp(*argv,"-passout") == 0)
 153                         {
 154                         if (--argc < 1) goto bad;
 155                         passargout= *(++argv);
 156                         }
 157                 else if (strcmp(*argv, "-engine") == 0)
 158                         {
 159                         if (--argc < 1) goto bad;
 160                         engine= *(++argv);
 161                         }
 162                 else if (strcmp(*argv, "-noout") == 0)
 163                         noout = 1;
 164                 else if (strcmp(*argv, "-text") == 0)
 165                         text = 1;
 166                 else if (strcmp(*argv, "-conv_form") == 0)
 167                         {
 168                         if (--argc < 1)
 169                                 goto bad;
 170                         ++argv;
 171                         new_form = 1;
 172                         if (strcmp(*argv, "compressed") == 0)
 173                                 form = POINT_CONVERSION_COMPRESSED;
 174                         else if (strcmp(*argv, "uncompressed") == 0)
 175                                 form = POINT_CONVERSION_UNCOMPRESSED;
 176                         else if (strcmp(*argv, "hybrid") == 0)
 177                                 form = POINT_CONVERSION_HYBRID;
 178                         else
 179                                 goto bad;
 180                         }
 181                 else if (strcmp(*argv, "-param_enc") == 0)
 182                         {
 183                         if (--argc < 1)
 184                                 goto bad;
 185                         ++argv;
 186                         new_asn1_flag = 1;
 187                         if (strcmp(*argv, "named_curve") == 0)
 188                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 189                         else if (strcmp(*argv, "explicit") == 0)
 190                                 asn1_flag = 0;
 191                         else
 192                                 goto bad;
 193                         }
 194                 else if (strcmp(*argv, "-param_out") == 0)
 195                         param_out = 1;
 196                 else if (strcmp(*argv, "-pubin") == 0)
 197                         pubin=1;
 198                 else if (strcmp(*argv, "-pubout") == 0)
 199                         pubout=1;
 200                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 201                         {
 202                         BIO_printf(bio_err, "unknown option %s\n", *argv);
 203                         badops=1;
 204                         break;
 205                         }
 206                 argc--;
 207                 argv++;
 208                 }
 209
 210         if (badops)
 211                 {
 212 bad:
 213                 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 214                 BIO_printf(bio_err, "where options are\n");
 215                 BIO_printf(bio_err, " -inform arg     input format - "
 216                                 "DER or PEM\n");
 217                 BIO_printf(bio_err, " -outform arg    output format - "
 218                                 "DER or PEM\n");
 219                 BIO_printf(bio_err, " -in arg         input file\n");
 220                 BIO_printf(bio_err, " -passin arg     input file pass "
 221                                 "phrase source\n");
 222                 BIO_printf(bio_err, " -out arg        output file\n");
 223                 BIO_printf(bio_err, " -passout arg    output file pass "
 224                                 "phrase source\n");
 225                 BIO_printf(bio_err, " -engine e       use engine e, "
 226                                 "possibly a hardware device.\n");
 227                 BIO_printf(bio_err, " -des            encrypt PEM output, "
 228                                 "instead of 'des' every other \n"
 229                                 "                 cipher "
 230                                 "supported by OpenSSL can be used\n");
 231                 BIO_printf(bio_err, " -text           print the key\n");
 232                 BIO_printf(bio_err, " -noout          don't print key out\n");
 233                 BIO_printf(bio_err, " -param_out      print the elliptic "
 234                                 "curve parameters\n");
 235                 BIO_printf(bio_err, " -conv_form arg  specifies the "
 236                                 "point conversion form \n");
 237                 BIO_printf(bio_err, "                 possible values:"
 238                                 " compressed\n");
 239                 BIO_printf(bio_err, "                                 "
 240                                 " uncompressed (default)\n");
 241                 BIO_printf(bio_err, "                                  "
 242                                 " hybrid\n");
 243                 BIO_printf(bio_err, " -param_enc arg  specifies the way"
 244                                 " the ec parameters are encoded\n");
 245                 BIO_printf(bio_err, "                 in the asn1 der "
 246                                 "encoding\n");
 247                 BIO_printf(bio_err, "                 possible values:"
 248                                 " named_curve (default)\n");
 249                 BIO_printf(bio_err,"                                  "
 250                                 "explicit\n");
 251                 goto end;
 252                 }
 253
 254         ERR_load_crypto_strings();
 255
 256 #ifndef OPENSSL_NO_ENGINE
 257         e = setup_engine(bio_err, engine, 0);
 258 #endif
 259
 260         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
 261                 {
 262                 BIO_printf(bio_err, "Error getting passwords\n");
 263                 goto end;
 264                 }
 265
 266         in = BIO_new(BIO_s_file());
 267         out = BIO_new(BIO_s_file());
 268         if ((in == NULL) || (out == NULL))
 269                 {
 270                 ERR_print_errors(bio_err);
 271                 goto end;
 272                 }
 273
 274         if (infile == NULL)
 275                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 276         else
 277                 {
 278                 if (BIO_read_filename(in, infile) <= 0)
 279                         {
 280                         perror(infile);
 281                         goto end;
 282                         }
 283                 }
 284
 285         BIO_printf(bio_err, "read EC key\n");
 286         if (informat == FORMAT_ASN1)
 287                 {
 288                 if (pubin)
 289                         eckey = d2i_EC_PUBKEY_bio(in, NULL);
 290                 else
 291                         eckey = d2i_ECPrivateKey_bio(in, NULL);
 292                 }
 293         else if (informat == FORMAT_PEM)
 294                 {
 295                 if (pubin)
 296                         eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
 297                                 NULL);
 298                 else
 299                         eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
 300                                 passin);
 301                 }
 302         else
 303                 {
 304                 BIO_printf(bio_err, "bad input format specified for key\n");
 305                 goto end;
 306                 }
 307         if (eckey == NULL)
 308                 {
 309                 BIO_printf(bio_err,"unable to load Key\n");
 310                 ERR_print_errors(bio_err);
 311                 goto end;
 312                 }
 313
 314         if (outfile == NULL)
 315                 {
 316                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 317 #ifdef OPENSSL_SYS_VMS
 318                         {
 319                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 320                         out = BIO_push(tmpbio, out);
 321                         }
 322 #endif
 323                 }
 324         else
 325                 {
 326                 if (BIO_write_filename(out, outfile) <= 0)
 327                         {
 328                         perror(outfile);
 329                         goto end;
 330                         }
 331                 }
 332
 333         group = EC_KEY_get0_group(eckey);
 334
 335         if (new_form)
 336                 EC_KEY_set_conv_form(eckey, form);
 337
 338         if (new_asn1_flag)
 339                 EC_KEY_set_asn1_flag(eckey, asn1_flag);
 340
 341         if (text)
 342                 if (!EC_KEY_print(out, eckey, 0))
 343                         {
 344                         perror(outfile);
 345                         ERR_print_errors(bio_err);
 346                         goto end;
 347                         }
 348
 349         if (noout)
 350                 {
 351                 ret = 0;
 352                 goto end;
 353                 }
 354
 355         BIO_printf(bio_err, "writing EC key\n");
 356         if (outformat == FORMAT_ASN1)
 357                 {
 358                 if (param_out)
 359                         i = i2d_ECPKParameters_bio(out, group);
 360                 else if (pubin || pubout)
 361                         i = i2d_EC_PUBKEY_bio(out, eckey);
 362                 else
 363                         i = i2d_ECPrivateKey_bio(out, eckey);
 364                 }
 365         else if (outformat == FORMAT_PEM)
 366                 {
 367                 if (param_out)
 368                         i = PEM_write_bio_ECPKParameters(out, group);
 369                 else if (pubin || pubout)
 370                         i = PEM_write_bio_EC_PUBKEY(out, eckey);
 371                 else
 372                         i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
 373                                                 NULL, 0, NULL, passout);
 374                 }
 375         else
 376                 {
 377                 BIO_printf(bio_err, "bad output format specified for "
 378                         "outfile\n");
 379                 goto end;
 380                 }
 381
 382         if (!i)
 383                 {
 384                 BIO_printf(bio_err, "unable to write private key\n");
 385                 ERR_print_errors(bio_err);
 386                 }
 387         else
 388                 ret=0;
 389 end:
 390         if (in)
 391                 BIO_free(in);
 392         if (out)
 393                 BIO_free_all(out);
 394         if (eckey)
 395                 EC_KEY_free(eckey);
 396         if (passin)
 397                 OPENSSL_free(passin);
 398         if (passout)
 399                 OPENSSL_free(passout);
 400         apps_shutdown();
 401         OPENSSL_EXIT(ret);
 402 }
 403 #else /* !OPENSSL_NO_EC */
 404
 405 # if PEDANTIC
 406 static void *dummy=&dummy;
 407 # endif
 408
 409 #endif