apps/dsa.c

   1 /* apps/dsa.c */
   2 /* Copyright (C) 1995-1997 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 <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <time.h>
  63 #include "apps.h"
  64 #include "bio.h"
  65 #include "err.h"
  66 #include "dsa.h"
  67 #include "evp.h"
  68 #include "x509.h"
  69 #include "pem.h"
  70
  71 #undef PROG
  72 #define PROG    dsa_main
  73
  74 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  75  * -outform arg - output format - default PEM
  76  * -in arg      - input file - default stdin
  77  * -out arg     - output file - default stdout
  78  * -des         - encrypt output if PEM format with DES in cbc mode
  79  * -des3        - encrypt output if PEM format
  80  * -idea        - encrypt output if PEM format
  81  * -text        - print a text version
  82  * -modulus     - print the DSA public key
  83  */
  84
  85 int MAIN(argc, argv)
  86 int argc;
  87 char **argv;
  88         {
  89         int ret=1;
  90         DSA *dsa=NULL;
  91         int i,badops=0;
  92         EVP_CIPHER *enc=NULL;
  93         BIO *in=NULL,*out=NULL;
  94         int informat,outformat,text=0,noout=0;
  95         char *infile,*outfile,*prog;
  96         int modulus=0;
  97
  98         apps_startup();
  99
 100         if (bio_err == NULL)
 101                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 102                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);
 103
 104         infile=NULL;
 105         outfile=NULL;
 106         informat=FORMAT_PEM;
 107         outformat=FORMAT_PEM;
 108
 109         prog=argv[0];
 110         argc--;
 111         argv++;
 112         while (argc >= 1)
 113                 {
 114                 if      (strcmp(*argv,"-inform") == 0)
 115                         {
 116                         if (--argc < 1) goto bad;
 117                         informat=str2fmt(*(++argv));
 118                         }
 119                 else if (strcmp(*argv,"-outform") == 0)
 120                         {
 121                         if (--argc < 1) goto bad;
 122                         outformat=str2fmt(*(++argv));
 123                         }
 124                 else if (strcmp(*argv,"-in") == 0)
 125                         {
 126                         if (--argc < 1) goto bad;
 127                         infile= *(++argv);
 128                         }
 129                 else if (strcmp(*argv,"-out") == 0)
 130                         {
 131                         if (--argc < 1) goto bad;
 132                         outfile= *(++argv);
 133                         }
 134                 else if (strcmp(*argv,"-noout") == 0)
 135                         noout=1;
 136                 else if (strcmp(*argv,"-text") == 0)
 137                         text=1;
 138                 else if (strcmp(*argv,"-modulus") == 0)
 139                         modulus=1;
 140                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 141                         {
 142                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 143                         badops=1;
 144                         break;
 145                         }
 146                 argc--;
 147                 argv++;
 148                 }
 149
 150         if (badops)
 151                 {
 152 bad:
 153                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 154                 BIO_printf(bio_err,"where options are\n");
 155                 BIO_printf(bio_err," -inform arg   input format - one of DER NET PEM\n");
 156                 BIO_printf(bio_err," -outform arg  output format - one of DER NET PEM\n");
 157                 BIO_printf(bio_err," -in arg       inout file\n");
 158                 BIO_printf(bio_err," -out arg      output file\n");
 159                 BIO_printf(bio_err," -des          encrypt PEM output with cbc des\n");
 160                 BIO_printf(bio_err," -des3         encrypt PEM output with ede cbc des using 168 bit key\n");
 161 #ifndef NO_IDEA
 162                 BIO_printf(bio_err," -idea         encrypt PEM output with cbc idea\n");
 163 #endif
 164                 BIO_printf(bio_err," -text         print the key in text\n");
 165                 BIO_printf(bio_err," -noout        don't print key out\n");
 166                 BIO_printf(bio_err," -modulus      print the DSA public value\n");
 167                 goto end;
 168                 }
 169
 170         ERR_load_crypto_strings();
 171
 172         in=BIO_new(BIO_s_file());
 173         out=BIO_new(BIO_s_file());
 174         if ((in == NULL) || (out == NULL))
 175                 {
 176                 ERR_print_errors(bio_err);
 177                 goto end;
 178                 }
 179
 180         if (infile == NULL)
 181                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 182         else
 183                 {
 184                 if (BIO_read_filename(in,infile) <= 0)
 185                         {
 186                         perror(infile);
 187                         goto end;
 188                         }
 189                 }
 190
 191         BIO_printf(bio_err,"read DSA private key\n");
 192         if      (informat == FORMAT_ASN1)
 193                 dsa=d2i_DSAPrivateKey_bio(in,NULL);
 194         else if (informat == FORMAT_PEM)
 195                 dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL);
 196         else
 197                 {
 198                 BIO_printf(bio_err,"bad input format specified for key\n");
 199                 goto end;
 200                 }
 201         if (dsa == NULL)
 202                 {
 203                 BIO_printf(bio_err,"unable to load Private Key\n");
 204                 ERR_print_errors(bio_err);
 205                 goto end;
 206                 }
 207
 208         if (outfile == NULL)
 209                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 210         else
 211                 {
 212                 if (BIO_write_filename(out,outfile) <= 0)
 213                         {
 214                         perror(outfile);
 215                         goto end;
 216                         }
 217                 }
 218
 219         if (text)
 220                 if (!DSA_print(out,dsa,0))
 221                         {
 222                         perror(outfile);
 223                         ERR_print_errors(bio_err);
 224                         goto end;
 225                         }
 226
 227         if (modulus)
 228                 {
 229                 fprintf(stdout,"Public Key=");
 230                 BN_print(out,dsa->pub_key);
 231                 fprintf(stdout,"\n");
 232                 }
 233
 234         if (noout) goto end;
 235         BIO_printf(bio_err,"writing DSA private key\n");
 236         if      (outformat == FORMAT_ASN1)
 237                 i=i2d_DSAPrivateKey_bio(out,dsa);
 238         else if (outformat == FORMAT_PEM)
 239                 i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL);
 240         else    {
 241                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 242                 goto end;
 243                 }
 244         if (!i)
 245                 {
 246                 BIO_printf(bio_err,"unable to write private key\n");
 247                 ERR_print_errors(bio_err);
 248                 }
 249         else
 250                 ret=0;
 251 end:
 252         if (in != NULL) BIO_free(in);
 253         if (out != NULL) BIO_free(out);
 254         if (dsa != NULL) DSA_free(dsa);
 255         EXIT(ret);
 256         }
 257