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 #ifndef OPENSSL_NO_DSA
  60 #include <stdio.h>
  61 #include <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/bn.h>
  68 #include <openssl/dsa.h>
  69 #include <openssl/x509.h>
  70 #include <openssl/pem.h>
  71 #include <openssl/engine.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         ENGINE *e = NULL;
  82         DSA *dsa=NULL;
  83         int ret=1;
  84         char *outfile=NULL;
  85         char *inrand=NULL,*dsaparams=NULL;
  86         char *passargout = NULL, *passout = NULL;
  87         BIO *out=NULL,*in=NULL;
  88         const EVP_CIPHER *enc=NULL;
  89         char *engine=NULL;
  90
  91         apps_startup();
  92
  93         if (bio_err == NULL)
  94                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  95                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  96
  97         argv++;
  98         argc--;
  99         for (;;)
 100                 {
 101                 if (argc <= 0) break;
 102                 if (strcmp(*argv,"-out") == 0)
 103                         {
 104                         if (--argc < 1) goto bad;
 105                         outfile= *(++argv);
 106                         }
 107                 else if (strcmp(*argv,"-passout") == 0)
 108                         {
 109                         if (--argc < 1) goto bad;
 110                         passargout= *(++argv);
 111                         }
 112                 else if (strcmp(*argv,"-engine") == 0)
 113                         {
 114                         if (--argc < 1) goto bad;
 115                         engine= *(++argv);
 116                         }
 117                 else if (strcmp(*argv,"-rand") == 0)
 118                         {
 119                         if (--argc < 1) goto bad;
 120                         inrand= *(++argv);
 121                         }
 122                 else if (strcmp(*argv,"-") == 0)
 123                         goto bad;
 124 #ifndef OPENSSL_NO_DES
 125                 else if (strcmp(*argv,"-des") == 0)
 126                         enc=EVP_des_cbc();
 127                 else if (strcmp(*argv,"-des3") == 0)
 128                         enc=EVP_des_ede3_cbc();
 129 #endif
 130 #ifndef OPENSSL_NO_IDEA
 131                 else if (strcmp(*argv,"-idea") == 0)
 132                         enc=EVP_idea_cbc();
 133 #endif
 134                 else if (**argv != '-' && dsaparams == NULL)
 135                         {
 136                         dsaparams = *argv;
 137                         }
 138                 else
 139                         goto bad;
 140                 argv++;
 141                 argc--;
 142                 }
 143
 144         if (dsaparams == NULL)
 145                 {
 146 bad:
 147                 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
 148                 BIO_printf(bio_err," -out file - output the key to 'file'\n");
 149 #ifndef OPENSSL_NO_DES
 150                 BIO_printf(bio_err," -des      - encrypt the generated key with DES in cbc mode\n");
 151                 BIO_printf(bio_err," -des3     - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 152 #endif
 153 #ifndef OPENSSL_NO_IDEA
 154                 BIO_printf(bio_err," -idea     - encrypt the generated key with IDEA in cbc mode\n");
 155 #endif
 156                 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
 157                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 158                 BIO_printf(bio_err,"           - load the file (or the files in the directory) into\n");
 159                 BIO_printf(bio_err,"             the random number generator\n");
 160                 BIO_printf(bio_err," dsaparam-file\n");
 161                 BIO_printf(bio_err,"           - a DSA parameter file as generated by the dsaparam command\n");
 162                 goto end;
 163                 }
 164
 165         if (engine != NULL)
 166                 {
 167                 if((e = ENGINE_by_id(engine)) == NULL)
 168                         {
 169                         BIO_printf(bio_err,"invalid engine \"%s\"\n",
 170                                 engine);
 171                         goto end;
 172                         }
 173                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 174                         {
 175                         BIO_printf(bio_err,"can't use that engine\n");
 176                         goto end;
 177                         }
 178                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
 179                 /* Free our "structural" reference. */
 180                 ENGINE_free(e);
 181                 }
 182
 183         if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 184                 BIO_printf(bio_err, "Error getting password\n");
 185                 goto end;
 186         }
 187
 188
 189         in=BIO_new(BIO_s_file());
 190         if (!(BIO_read_filename(in,dsaparams)))
 191                 {
 192                 perror(dsaparams);
 193                 goto end;
 194                 }
 195
 196         if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
 197                 {
 198                 BIO_printf(bio_err,"unable to load DSA parameter file\n");
 199                 goto end;
 200                 }
 201         BIO_free(in);
 202         in = NULL;
 203
 204         out=BIO_new(BIO_s_file());
 205         if (out == NULL) goto end;
 206
 207         if (outfile == NULL)
 208                 {
 209                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 210 #ifdef OPENSSL_SYS_VMS
 211                 {
 212                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 213                 out = BIO_push(tmpbio, out);
 214                 }
 215 #endif
 216                 }
 217         else
 218                 {
 219                 if (BIO_write_filename(out,outfile) <= 0)
 220                         {
 221                         perror(outfile);
 222                         goto end;
 223                         }
 224                 }
 225
 226         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
 227                 {
 228                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 229                 }
 230         if (inrand != NULL)
 231                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 232                         app_RAND_load_files(inrand));
 233
 234         BIO_printf(bio_err,"Generating DSA key, %d bits\n",
 235                                                         BN_num_bits(dsa->p));
 236         if (!DSA_generate_key(dsa)) goto end;
 237
 238         app_RAND_write_file(NULL, bio_err);
 239
 240         if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
 241                 goto end;
 242         ret=0;
 243 end:
 244         if (ret != 0)
 245                 ERR_print_errors(bio_err);
 246         if (in != NULL) BIO_free(in);
 247         if (out != NULL) BIO_free_all(out);
 248         if (dsa != NULL) DSA_free(dsa);
 249         if(passout) OPENSSL_free(passout);
 250         EXIT(ret);
 251         }
 252 #endif