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 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
  72 #define DEFBITS 512
  73 #undef PROG
  74 #define PROG gendsa_main
  75
  76 int MAIN(int, char **);
  77
  78 int MAIN(int argc, char **argv)
  79         {
  80         DSA *dsa=NULL;
  81         int ret=1;
  82         char *outfile=NULL;
  83         char *inrand=NULL,*dsaparams=NULL;
  84         char *passargout = NULL, *passout = NULL;
  85         BIO *out=NULL,*in=NULL;
  86         EVP_CIPHER *enc=NULL;
  87
  88         apps_startup();
  89
  90         if (bio_err == NULL)
  91                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  92                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  93
  94         argv++;
  95         argc--;
  96         for (;;)
  97                 {
  98                 if (argc <= 0) break;
  99                 if (strcmp(*argv,"-out") == 0)
 100                         {
 101                         if (--argc < 1) goto bad;
 102                         outfile= *(++argv);
 103                         }
 104                 else if (strcmp(*argv,"-passout") == 0)
 105                         {
 106                         if (--argc < 1) goto bad;
 107                         passargout= *(++argv);
 108                         }
 109                 else if (strcmp(*argv,"-rand") == 0)
 110                         {
 111                         if (--argc < 1) goto bad;
 112                         inrand= *(++argv);
 113                         }
 114                 else if (strcmp(*argv,"-") == 0)
 115                         goto bad;
 116 #ifndef NO_DES
 117                 else if (strcmp(*argv,"-des") == 0)
 118                         enc=EVP_des_cbc();
 119                 else if (strcmp(*argv,"-des3") == 0)
 120                         enc=EVP_des_ede3_cbc();
 121 #endif
 122 #ifndef NO_IDEA
 123                 else if (strcmp(*argv,"-idea") == 0)
 124                         enc=EVP_idea_cbc();
 125 #endif
 126                 else if (**argv != '-' && dsaparams == NULL)
 127                         {
 128                         dsaparams = *argv;
 129                         }
 130                 else
 131                         goto bad;
 132                 argv++;
 133                 argc--;
 134                 }
 135
 136         if (dsaparams == NULL)
 137                 {
 138 bad:
 139                 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
 140                 BIO_printf(bio_err," -out file - output the key to 'file'\n");
 141 #ifndef NO_DES
 142                 BIO_printf(bio_err," -des      - encrypt the generated key with DES in cbc mode\n");
 143                 BIO_printf(bio_err," -des3     - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 144 #endif
 145 #ifndef NO_IDEA
 146                 BIO_printf(bio_err," -idea     - encrypt the generated key with IDEA in cbc mode\n");
 147 #endif
 148                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 149                 BIO_printf(bio_err,"           - load the file (or the files in the directory) into\n");
 150                 BIO_printf(bio_err,"             the random number generator\n");
 151                 BIO_printf(bio_err," dsaparam-file\n");
 152                 BIO_printf(bio_err,"           - a DSA parameter file as generated by the dsaparam command\n");
 153                 goto end;
 154                 }
 155
 156         if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 157                 BIO_printf(bio_err, "Error getting password\n");
 158                 goto end;
 159         }
 160
 161
 162         in=BIO_new(BIO_s_file());
 163         if (!(BIO_read_filename(in,dsaparams)))
 164                 {
 165                 perror(dsaparams);
 166                 goto end;
 167                 }
 168
 169         if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
 170                 {
 171                 BIO_printf(bio_err,"unable to load DSA parameter file\n");
 172                 goto end;
 173                 }
 174         BIO_free(in);
 175         in = NULL;
 176
 177         out=BIO_new(BIO_s_file());
 178         if (out == NULL) goto end;
 179
 180         if (outfile == NULL)
 181                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 182         else
 183                 {
 184                 if (BIO_write_filename(out,outfile) <= 0)
 185                         {
 186                         perror(outfile);
 187                         goto end;
 188                         }
 189                 }
 190
 191         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
 192                 {
 193                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 194                 }
 195         if (inrand != NULL)
 196                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 197                         app_RAND_load_files(inrand));
 198
 199         BIO_printf(bio_err,"Generating DSA key, %d bits\n",
 200                                                         BN_num_bits(dsa->p));
 201         if (!DSA_generate_key(dsa)) goto end;
 202
 203         app_RAND_write_file(NULL, bio_err);
 204
 205         if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
 206                 goto end;
 207         ret=0;
 208 end:
 209         if (ret != 0)
 210                 ERR_print_errors(bio_err);
 211         if (in != NULL) BIO_free(in);
 212         if (out != NULL) BIO_free(out);
 213         if (dsa != NULL) DSA_free(dsa);
 214         if(passout) Free(passout);
 215         EXIT(ret);
 216         }
 217 #endif