crypto/openssl-0.9/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 #ifndef OPENSSL_NO_ENGINE
  82         ENGINE *e = NULL;
  83 #endif
  84         DSA *dsa=NULL;
  85         int ret=1;
  86         char *outfile=NULL;
  87         char *inrand=NULL,*dsaparams=NULL;
  88         char *passargout = NULL, *passout = NULL;
  89         BIO *out=NULL,*in=NULL;
  90         const EVP_CIPHER *enc=NULL;
  91 #ifndef OPENSSL_NO_ENGINE
  92         char *engine=NULL;
  93 #endif
  94
  95         apps_startup();
  96
  97         if (bio_err == NULL)
  98                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  99                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 100
 101         if (!load_config(bio_err, NULL))
 102                 goto end;
 103
 104         argv++;
 105         argc--;
 106         for (;;)
 107                 {
 108                 if (argc <= 0) break;
 109                 if (strcmp(*argv,"-out") == 0)
 110                         {
 111                         if (--argc < 1) goto bad;
 112                         outfile= *(++argv);
 113                         }
 114                 else if (strcmp(*argv,"-passout") == 0)
 115                         {
 116                         if (--argc < 1) goto bad;
 117                         passargout= *(++argv);
 118                         }
 119 #ifndef OPENSSL_NO_ENGINE
 120                 else if (strcmp(*argv,"-engine") == 0)
 121                         {
 122                         if (--argc < 1) goto bad;
 123                         engine= *(++argv);
 124                         }
 125 #endif
 126                 else if (strcmp(*argv,"-rand") == 0)
 127                         {
 128                         if (--argc < 1) goto bad;
 129                         inrand= *(++argv);
 130                         }
 131                 else if (strcmp(*argv,"-") == 0)
 132                         goto bad;
 133 #ifndef OPENSSL_NO_DES
 134                 else if (strcmp(*argv,"-des") == 0)
 135                         enc=EVP_des_cbc();
 136                 else if (strcmp(*argv,"-des3") == 0)
 137                         enc=EVP_des_ede3_cbc();
 138 #endif
 139 #ifndef OPENSSL_NO_IDEA
 140                 else if (strcmp(*argv,"-idea") == 0)
 141                         enc=EVP_idea_cbc();
 142 #endif
 143 #ifndef OPENSSL_NO_SEED
 144                 else if (strcmp(*argv,"-seed") == 0)
 145                         enc=EVP_seed_cbc();
 146 #endif
 147 #ifndef OPENSSL_NO_AES
 148                 else if (strcmp(*argv,"-aes128") == 0)
 149                         enc=EVP_aes_128_cbc();
 150                 else if (strcmp(*argv,"-aes192") == 0)
 151                         enc=EVP_aes_192_cbc();
 152                 else if (strcmp(*argv,"-aes256") == 0)
 153                         enc=EVP_aes_256_cbc();
 154 #endif
 155 #ifndef OPENSSL_NO_CAMELLIA
 156                 else if (strcmp(*argv,"-camellia128") == 0)
 157                         enc=EVP_camellia_128_cbc();
 158                 else if (strcmp(*argv,"-camellia192") == 0)
 159                         enc=EVP_camellia_192_cbc();
 160                 else if (strcmp(*argv,"-camellia256") == 0)
 161                         enc=EVP_camellia_256_cbc();
 162 #endif
 163                 else if (**argv != '-' && dsaparams == NULL)
 164                         {
 165                         dsaparams = *argv;
 166                         }
 167                 else
 168                         goto bad;
 169                 argv++;
 170                 argc--;
 171                 }
 172
 173         if (dsaparams == NULL)
 174                 {
 175 bad:
 176                 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
 177                 BIO_printf(bio_err," -out file - output the key to 'file'\n");
 178 #ifndef OPENSSL_NO_DES
 179                 BIO_printf(bio_err," -des      - encrypt the generated key with DES in cbc mode\n");
 180                 BIO_printf(bio_err," -des3     - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 181 #endif
 182 #ifndef OPENSSL_NO_IDEA
 183                 BIO_printf(bio_err," -idea     - encrypt the generated key with IDEA in cbc mode\n");
 184 #endif
 185 #ifndef OPENSSL_NO_SEED
 186                 BIO_printf(bio_err," -seed\n");
 187                 BIO_printf(bio_err,"                 encrypt PEM output with cbc seed\n");
 188 #endif
 189 #ifndef OPENSSL_NO_AES
 190                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 191                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 192 #endif
 193 #ifndef OPENSSL_NO_CAMELLIA
 194                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 195                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 196 #endif
 197 #ifndef OPENSSL_NO_ENGINE
 198                 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
 199 #endif
 200                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 201                 BIO_printf(bio_err,"           - load the file (or the files in the directory) into\n");
 202                 BIO_printf(bio_err,"             the random number generator\n");
 203                 BIO_printf(bio_err," dsaparam-file\n");
 204                 BIO_printf(bio_err,"           - a DSA parameter file as generated by the dsaparam command\n");
 205                 goto end;
 206                 }
 207
 208 #ifndef OPENSSL_NO_ENGINE
 209         e = setup_engine(bio_err, engine, 0);
 210 #endif
 211
 212         if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 213                 BIO_printf(bio_err, "Error getting password\n");
 214                 goto end;
 215         }
 216
 217
 218         in=BIO_new(BIO_s_file());
 219         if (!(BIO_read_filename(in,dsaparams)))
 220                 {
 221                 perror(dsaparams);
 222                 goto end;
 223                 }
 224
 225         if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
 226                 {
 227                 BIO_printf(bio_err,"unable to load DSA parameter file\n");
 228                 goto end;
 229                 }
 230         BIO_free(in);
 231         in = NULL;
 232
 233         out=BIO_new(BIO_s_file());
 234         if (out == NULL) goto end;
 235
 236         if (outfile == NULL)
 237                 {
 238                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 239 #ifdef OPENSSL_SYS_VMS
 240                 {
 241                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 242                 out = BIO_push(tmpbio, out);
 243                 }
 244 #endif
 245                 }
 246         else
 247                 {
 248                 if (BIO_write_filename(out,outfile) <= 0)
 249                         {
 250                         perror(outfile);
 251                         goto end;
 252                         }
 253                 }
 254
 255         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
 256                 {
 257                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 258                 }
 259         if (inrand != NULL)
 260                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 261                         app_RAND_load_files(inrand));
 262
 263         BIO_printf(bio_err,"Generating DSA key, %d bits\n",
 264                                                         BN_num_bits(dsa->p));
 265         if (!DSA_generate_key(dsa)) goto end;
 266
 267         app_RAND_write_file(NULL, bio_err);
 268
 269         if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
 270                 goto end;
 271         ret=0;
 272 end:
 273         if (ret != 0)
 274                 ERR_print_errors(bio_err);
 275         if (in != NULL) BIO_free(in);
 276         if (out != NULL) BIO_free_all(out);
 277         if (dsa != NULL) DSA_free(dsa);
 278         if(passout) OPENSSL_free(passout);
 279         apps_shutdown();
 280         OPENSSL_EXIT(ret);
 281         }
 282 #endif