apps/dsa.c

   1 /* apps/dsa.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
  60 #ifndef OPENSSL_NO_DSA
  61 # include <stdio.h>
  62 # include <stdlib.h>
  63 # include <string.h>
  64 # include <time.h>
  65 # include "apps.h"
  66 # include <openssl/bio.h>
  67 # include <openssl/err.h>
  68 # include <openssl/dsa.h>
  69 # include <openssl/evp.h>
  70 # include <openssl/x509.h>
  71 # include <openssl/pem.h>
  72 # include <openssl/bn.h>
  73
  74 # undef PROG
  75 # define PROG    dsa_main
  76
  77 /*-
  78  * -inform arg  - input format - default PEM (one of DER, NET or PEM)
  79  * -outform arg - output format - default PEM
  80  * -in arg      - input file - default stdin
  81  * -out arg     - output file - default stdout
  82  * -des         - encrypt output if PEM format with DES in cbc mode
  83  * -des3        - encrypt output if PEM format
  84  * -idea        - encrypt output if PEM format
  85  * -aes128      - encrypt output if PEM format
  86  * -aes192      - encrypt output if PEM format
  87  * -aes256      - encrypt output if PEM format
  88  * -camellia128 - encrypt output if PEM format
  89  * -camellia192 - encrypt output if PEM format
  90  * -camellia256 - encrypt output if PEM format
  91  * -seed        - encrypt output if PEM format
  92  * -text        - print a text version
  93  * -modulus     - print the DSA public key
  94  */
  95
  96 int MAIN(int, char **);
  97
  98 int MAIN(int argc, char **argv)
  99 {
 100     ENGINE *e = NULL;
 101     int ret = 1;
 102     DSA *dsa = NULL;
 103     int i, badops = 0;
 104     const EVP_CIPHER *enc = NULL;
 105     BIO *in = NULL, *out = NULL;
 106     int informat, outformat, text = 0, noout = 0;
 107     int pubin = 0, pubout = 0;
 108     char *infile, *outfile, *prog;
 109 # ifndef OPENSSL_NO_ENGINE
 110     char *engine;
 111 # endif
 112     char *passargin = NULL, *passargout = NULL;
 113     char *passin = NULL, *passout = NULL;
 114     int modulus = 0;
 115
 116 #ifndef OPENSSL_NO_RC4
 117     int pvk_encr = 2;
 118 #endif
 119
 120     apps_startup();
 121
 122     if (bio_err == NULL)
 123         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 124             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 125
 126     if (!load_config(bio_err, NULL))
 127         goto end;
 128
 129 # ifndef OPENSSL_NO_ENGINE
 130     engine = NULL;
 131 # endif
 132     infile = NULL;
 133     outfile = NULL;
 134     informat = FORMAT_PEM;
 135     outformat = FORMAT_PEM;
 136
 137     prog = argv[0];
 138     argc--;
 139     argv++;
 140     while (argc >= 1) {
 141         if (strcmp(*argv, "-inform") == 0) {
 142             if (--argc < 1)
 143                 goto bad;
 144             informat = str2fmt(*(++argv));
 145         } else if (strcmp(*argv, "-outform") == 0) {
 146             if (--argc < 1)
 147                 goto bad;
 148             outformat = str2fmt(*(++argv));
 149         } else if (strcmp(*argv, "-in") == 0) {
 150             if (--argc < 1)
 151                 goto bad;
 152             infile = *(++argv);
 153         } else if (strcmp(*argv, "-out") == 0) {
 154             if (--argc < 1)
 155                 goto bad;
 156             outfile = *(++argv);
 157         } else if (strcmp(*argv, "-passin") == 0) {
 158             if (--argc < 1)
 159                 goto bad;
 160             passargin = *(++argv);
 161         } else if (strcmp(*argv, "-passout") == 0) {
 162             if (--argc < 1)
 163                 goto bad;
 164             passargout = *(++argv);
 165         }
 166 # ifndef OPENSSL_NO_ENGINE
 167         else if (strcmp(*argv, "-engine") == 0) {
 168             if (--argc < 1)
 169                 goto bad;
 170             engine = *(++argv);
 171         }
 172 # endif
 173 #ifndef OPENSSL_NO_RC4
 174         else if (strcmp(*argv, "-pvk-strong") == 0)
 175             pvk_encr = 2;
 176         else if (strcmp(*argv, "-pvk-weak") == 0)
 177             pvk_encr = 1;
 178         else if (strcmp(*argv, "-pvk-none") == 0)
 179             pvk_encr = 0;
 180 #endif
 181         else if (strcmp(*argv, "-noout") == 0)
 182             noout = 1;
 183         else if (strcmp(*argv, "-text") == 0)
 184             text = 1;
 185         else if (strcmp(*argv, "-modulus") == 0)
 186             modulus = 1;
 187         else if (strcmp(*argv, "-pubin") == 0)
 188             pubin = 1;
 189         else if (strcmp(*argv, "-pubout") == 0)
 190             pubout = 1;
 191         else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
 192             BIO_printf(bio_err, "unknown option %s\n", *argv);
 193             badops = 1;
 194             break;
 195         }
 196         argc--;
 197         argv++;
 198     }
 199
 200     if (badops) {
 201  bad:
 202         BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 203         BIO_printf(bio_err, "where options are\n");
 204         BIO_printf(bio_err, " -inform arg     input format - DER or PEM\n");
 205         BIO_printf(bio_err, " -outform arg    output format - DER or PEM\n");
 206         BIO_printf(bio_err, " -in arg         input file\n");
 207         BIO_printf(bio_err,
 208                    " -passin arg     input file pass phrase source\n");
 209         BIO_printf(bio_err, " -out arg        output file\n");
 210         BIO_printf(bio_err,
 211                    " -passout arg    output file pass phrase source\n");
 212 # ifndef OPENSSL_NO_ENGINE
 213         BIO_printf(bio_err,
 214                    " -engine e       use engine e, possibly a hardware device.\n");
 215 # endif
 216         BIO_printf(bio_err,
 217                    " -des            encrypt PEM output with cbc des\n");
 218         BIO_printf(bio_err,
 219                    " -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 220 # ifndef OPENSSL_NO_IDEA
 221         BIO_printf(bio_err,
 222                    " -idea           encrypt PEM output with cbc idea\n");
 223 # endif
 224 # ifndef OPENSSL_NO_AES
 225         BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
 226         BIO_printf(bio_err,
 227                    "                 encrypt PEM output with cbc aes\n");
 228 # endif
 229 # ifndef OPENSSL_NO_CAMELLIA
 230         BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
 231         BIO_printf(bio_err,
 232                    "                 encrypt PEM output with cbc camellia\n");
 233 # endif
 234 # ifndef OPENSSL_NO_SEED
 235         BIO_printf(bio_err,
 236                    " -seed           encrypt PEM output with cbc seed\n");
 237 # endif
 238         BIO_printf(bio_err, " -text           print the key in text\n");
 239         BIO_printf(bio_err, " -noout          don't print key out\n");
 240         BIO_printf(bio_err, " -modulus        print the DSA public value\n");
 241         goto end;
 242     }
 243
 244     ERR_load_crypto_strings();
 245
 246 # ifndef OPENSSL_NO_ENGINE
 247     e = setup_engine(bio_err, engine, 0);
 248 # endif
 249
 250     if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 251         BIO_printf(bio_err, "Error getting passwords\n");
 252         goto end;
 253     }
 254
 255     in = BIO_new(BIO_s_file());
 256     out = BIO_new(BIO_s_file());
 257     if ((in == NULL) || (out == NULL)) {
 258         ERR_print_errors(bio_err);
 259         goto end;
 260     }
 261
 262     if (infile == NULL)
 263         BIO_set_fp(in, stdin, BIO_NOCLOSE);
 264     else {
 265         if (BIO_read_filename(in, infile) <= 0) {
 266             perror(infile);
 267             goto end;
 268         }
 269     }
 270
 271     BIO_printf(bio_err, "read DSA key\n");
 272
 273     {
 274         EVP_PKEY *pkey;
 275
 276         if (pubin)
 277             pkey = load_pubkey(bio_err, infile, informat, 1,
 278                                passin, e, "Public Key");
 279         else
 280             pkey = load_key(bio_err, infile, informat, 1,
 281                             passin, e, "Private Key");
 282
 283         if (pkey) {
 284             dsa = EVP_PKEY_get1_DSA(pkey);
 285             EVP_PKEY_free(pkey);
 286         }
 287     }
 288     if (dsa == NULL) {
 289         BIO_printf(bio_err, "unable to load Key\n");
 290         ERR_print_errors(bio_err);
 291         goto end;
 292     }
 293
 294     if (outfile == NULL) {
 295         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 296 # ifdef OPENSSL_SYS_VMS
 297         {
 298             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 299             out = BIO_push(tmpbio, out);
 300         }
 301 # endif
 302     } else {
 303         if (BIO_write_filename(out, outfile) <= 0) {
 304             perror(outfile);
 305             goto end;
 306         }
 307     }
 308
 309     if (text)
 310         if (!DSA_print(out, dsa, 0)) {
 311             perror(outfile);
 312             ERR_print_errors(bio_err);
 313             goto end;
 314         }
 315
 316     if (modulus) {
 317         fprintf(stdout, "Public Key=");
 318         BN_print(out, dsa->pub_key);
 319         fprintf(stdout, "\n");
 320     }
 321
 322     if (noout)
 323         goto end;
 324     BIO_printf(bio_err, "writing DSA key\n");
 325     if (outformat == FORMAT_ASN1) {
 326         if (pubin || pubout)
 327             i = i2d_DSA_PUBKEY_bio(out, dsa);
 328         else
 329             i = i2d_DSAPrivateKey_bio(out, dsa);
 330     } else if (outformat == FORMAT_PEM) {
 331         if (pubin || pubout)
 332             i = PEM_write_bio_DSA_PUBKEY(out, dsa);
 333         else
 334             i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
 335                                             NULL, 0, NULL, passout);
 336 # if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
 337     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 338         EVP_PKEY *pk;
 339         pk = EVP_PKEY_new();
 340         EVP_PKEY_set1_DSA(pk, dsa);
 341         if (outformat == FORMAT_PVK)
 342             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 343         else if (pubin || pubout)
 344             i = i2b_PublicKey_bio(out, pk);
 345         else
 346             i = i2b_PrivateKey_bio(out, pk);
 347         EVP_PKEY_free(pk);
 348 # endif
 349     } else {
 350         BIO_printf(bio_err, "bad output format specified for outfile\n");
 351         goto end;
 352     }
 353     if (i <= 0) {
 354         BIO_printf(bio_err, "unable to write private key\n");
 355         ERR_print_errors(bio_err);
 356     } else
 357         ret = 0;
 358  end:
 359     if (in != NULL)
 360         BIO_free(in);
 361     if (out != NULL)
 362         BIO_free_all(out);
 363     DSA_free(dsa);
 364     if (passin)
 365         OPENSSL_free(passin);
 366     if (passout)
 367         OPENSSL_free(passout);
 368     apps_shutdown();
 369     OPENSSL_EXIT(ret);
 370 }
 371 #else                           /* !OPENSSL_NO_DSA */
 372
 373 # if PEDANTIC
 374 static void *dummy = &dummy;
 375 # endif
 376
 377 #endif