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