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