apps/gendsa.c

   1 /* apps/gendsa.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 <string.h>
  63 # include <sys/types.h>
  64 # include <sys/stat.h>
  65 # include "apps.h"
  66 # include <openssl/bio.h>
  67 # include <openssl/err.h>
  68 # include <openssl/bn.h>
  69 # include <openssl/dsa.h>
  70 # include <openssl/x509.h>
  71 # include <openssl/pem.h>
  72
  73 # define DEFBITS 512
  74 # undef PROG
  75 # define PROG gendsa_main
  76
  77 int MAIN(int, char **);
  78
  79 int MAIN(int argc, char **argv)
  80 {
  81     DSA *dsa = NULL;
  82     int ret = 1;
  83     char *outfile = NULL;
  84     char *inrand = NULL, *dsaparams = NULL;
  85     char *passargout = NULL, *passout = NULL;
  86     BIO *out = NULL, *in = NULL;
  87     const EVP_CIPHER *enc = NULL;
  88 # ifndef OPENSSL_NO_ENGINE
  89     char *engine = NULL;
  90 # endif
  91
  92     apps_startup();
  93
  94     if (bio_err == NULL)
  95         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
  96             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  97
  98     if (!load_config(bio_err, NULL))
  99         goto end;
 100
 101     argv++;
 102     argc--;
 103     for (;;) {
 104         if (argc <= 0)
 105             break;
 106         if (strcmp(*argv, "-out") == 0) {
 107             if (--argc < 1)
 108                 goto bad;
 109             outfile = *(++argv);
 110         } else if (strcmp(*argv, "-passout") == 0) {
 111             if (--argc < 1)
 112                 goto bad;
 113             passargout = *(++argv);
 114         }
 115 # ifndef OPENSSL_NO_ENGINE
 116         else if (strcmp(*argv, "-engine") == 0) {
 117             if (--argc < 1)
 118                 goto bad;
 119             engine = *(++argv);
 120         }
 121 # endif
 122         else if (strcmp(*argv, "-rand") == 0) {
 123             if (--argc < 1)
 124                 goto bad;
 125             inrand = *(++argv);
 126         } else if (strcmp(*argv, "-") == 0)
 127             goto bad;
 128 # ifndef OPENSSL_NO_DES
 129         else if (strcmp(*argv, "-des") == 0)
 130             enc = EVP_des_cbc();
 131         else if (strcmp(*argv, "-des3") == 0)
 132             enc = EVP_des_ede3_cbc();
 133 # endif
 134 # ifndef OPENSSL_NO_IDEA
 135         else if (strcmp(*argv, "-idea") == 0)
 136             enc = EVP_idea_cbc();
 137 # endif
 138 # ifndef OPENSSL_NO_SEED
 139         else if (strcmp(*argv, "-seed") == 0)
 140             enc = EVP_seed_cbc();
 141 # endif
 142 # ifndef OPENSSL_NO_AES
 143         else if (strcmp(*argv, "-aes128") == 0)
 144             enc = EVP_aes_128_cbc();
 145         else if (strcmp(*argv, "-aes192") == 0)
 146             enc = EVP_aes_192_cbc();
 147         else if (strcmp(*argv, "-aes256") == 0)
 148             enc = EVP_aes_256_cbc();
 149 # endif
 150 # ifndef OPENSSL_NO_CAMELLIA
 151         else if (strcmp(*argv, "-camellia128") == 0)
 152             enc = EVP_camellia_128_cbc();
 153         else if (strcmp(*argv, "-camellia192") == 0)
 154             enc = EVP_camellia_192_cbc();
 155         else if (strcmp(*argv, "-camellia256") == 0)
 156             enc = EVP_camellia_256_cbc();
 157 # endif
 158         else if (**argv != '-' && dsaparams == NULL) {
 159             dsaparams = *argv;
 160         } else
 161             goto bad;
 162         argv++;
 163         argc--;
 164     }
 165
 166     if (dsaparams == NULL) {
 167  bad:
 168         BIO_printf(bio_err, "usage: gendsa [args] dsaparam-file\n");
 169         BIO_printf(bio_err, " -out file - output the key to 'file'\n");
 170 # ifndef OPENSSL_NO_DES
 171         BIO_printf(bio_err,
 172                    " -des      - encrypt the generated key with DES in cbc mode\n");
 173         BIO_printf(bio_err,
 174                    " -des3     - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 175 # endif
 176 # ifndef OPENSSL_NO_IDEA
 177         BIO_printf(bio_err,
 178                    " -idea     - encrypt the generated key with IDEA in cbc mode\n");
 179 # endif
 180 # ifndef OPENSSL_NO_SEED
 181         BIO_printf(bio_err, " -seed\n");
 182         BIO_printf(bio_err,
 183                    "                 encrypt PEM output with cbc seed\n");
 184 # endif
 185 # ifndef OPENSSL_NO_AES
 186         BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
 187         BIO_printf(bio_err,
 188                    "                 encrypt PEM output with cbc aes\n");
 189 # endif
 190 # ifndef OPENSSL_NO_CAMELLIA
 191         BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
 192         BIO_printf(bio_err,
 193                    "                 encrypt PEM output with cbc camellia\n");
 194 # endif
 195 # ifndef OPENSSL_NO_ENGINE
 196         BIO_printf(bio_err,
 197                    " -engine e - use engine e, possibly a hardware device.\n");
 198 # endif
 199         BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
 200                    LIST_SEPARATOR_CHAR);
 201         BIO_printf(bio_err,
 202                    "           - load the file (or the files in the directory) into\n");
 203         BIO_printf(bio_err, "             the random number generator\n");
 204         BIO_printf(bio_err, " dsaparam-file\n");
 205         BIO_printf(bio_err,
 206                    "           - a DSA parameter file as generated by the dsaparam command\n");
 207         goto end;
 208     }
 209 # ifndef OPENSSL_NO_ENGINE
 210     setup_engine(bio_err, engine, 0);
 211 # endif
 212
 213     if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 214         BIO_printf(bio_err, "Error getting password\n");
 215         goto end;
 216     }
 217
 218     in = BIO_new(BIO_s_file());
 219     if (!(BIO_read_filename(in, dsaparams))) {
 220         perror(dsaparams);
 221         goto end;
 222     }
 223
 224     if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
 225         BIO_printf(bio_err, "unable to load DSA parameter file\n");
 226         goto end;
 227     }
 228     BIO_free(in);
 229     in = NULL;
 230
 231     out = BIO_new(BIO_s_file());
 232     if (out == NULL)
 233         goto end;
 234
 235     if (outfile == NULL) {
 236         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 237 # ifdef OPENSSL_SYS_VMS
 238         {
 239             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 240             out = BIO_push(tmpbio, out);
 241         }
 242 # endif
 243     } else {
 244         if (BIO_write_filename(out, outfile) <= 0) {
 245             perror(outfile);
 246             goto end;
 247         }
 248     }
 249
 250     if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) {
 251         BIO_printf(bio_err,
 252                    "warning, not much extra random data, consider using the -rand option\n");
 253     }
 254     if (inrand != NULL)
 255         BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
 256                    app_RAND_load_files(inrand));
 257
 258     BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(dsa->p));
 259     if (!DSA_generate_key(dsa))
 260         goto end;
 261
 262     app_RAND_write_file(NULL, bio_err);
 263
 264     if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout))
 265         goto end;
 266     ret = 0;
 267  end:
 268     if (ret != 0)
 269         ERR_print_errors(bio_err);
 270     if (in != NULL)
 271         BIO_free(in);
 272     if (out != NULL)
 273         BIO_free_all(out);
 274     if (dsa != NULL)
 275         DSA_free(dsa);
 276     if (passout)
 277         OPENSSL_free(passout);
 278     apps_shutdown();
 279     OPENSSL_EXIT(ret);
 280 }
 281 #else                           /* !OPENSSL_NO_DSA */
 282
 283 # if PEDANTIC
 284 static void *dummy = &dummy;
 285 # endif
 286
 287 #endif