apps/dsa.c

   1 /* apps/dsa.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 <stdlib.h>
  62 #include <string.h>
  63 #include <time.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/dsa.h>
  68 #include <openssl/evp.h>
  69 #include <openssl/x509.h>
  70 #include <openssl/pem.h>
  71 #include <openssl/engine.h>
  72
  73 #undef PROG
  74 #define PROG    dsa_main
  75
  76 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  77  * -outform arg - output format - default PEM
  78  * -in arg      - input file - default stdin
  79  * -out arg     - output file - default stdout
  80  * -des         - encrypt output if PEM format with DES in cbc mode
  81  * -des3        - encrypt output if PEM format
  82  * -idea        - encrypt output if PEM format
  83  * -text        - print a text version
  84  * -modulus     - print the DSA public key
  85  */
  86
  87 int MAIN(int, char **);
  88
  89 int MAIN(int argc, char **argv)
  90         {
  91         ENGINE *e = NULL;
  92         int ret=1;
  93         DSA *dsa=NULL;
  94         int i,badops=0;
  95         const EVP_CIPHER *enc=NULL;
  96         BIO *in=NULL,*out=NULL;
  97         int informat,outformat,text=0,noout=0;
  98         int pubin = 0, pubout = 0;
  99         char *infile,*outfile,*prog,*engine;
 100         char *passargin = NULL, *passargout = NULL;
 101         char *passin = NULL, *passout = NULL;
 102         int modulus=0;
 103
 104         apps_startup();
 105
 106         if (bio_err == NULL)
 107                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 108                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 109
 110         engine=NULL;
 111         infile=NULL;
 112         outfile=NULL;
 113         informat=FORMAT_PEM;
 114         outformat=FORMAT_PEM;
 115
 116         prog=argv[0];
 117         argc--;
 118         argv++;
 119         while (argc >= 1)
 120                 {
 121                 if      (strcmp(*argv,"-inform") == 0)
 122                         {
 123                         if (--argc < 1) goto bad;
 124                         informat=str2fmt(*(++argv));
 125                         }
 126                 else if (strcmp(*argv,"-outform") == 0)
 127                         {
 128                         if (--argc < 1) goto bad;
 129                         outformat=str2fmt(*(++argv));
 130                         }
 131                 else if (strcmp(*argv,"-in") == 0)
 132                         {
 133                         if (--argc < 1) goto bad;
 134                         infile= *(++argv);
 135                         }
 136                 else if (strcmp(*argv,"-out") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         outfile= *(++argv);
 140                         }
 141                 else if (strcmp(*argv,"-passin") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         passargin= *(++argv);
 145                         }
 146                 else if (strcmp(*argv,"-passout") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         passargout= *(++argv);
 150                         }
 151                 else if (strcmp(*argv,"-engine") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         engine= *(++argv);
 155                         }
 156                 else if (strcmp(*argv,"-noout") == 0)
 157                         noout=1;
 158                 else if (strcmp(*argv,"-text") == 0)
 159                         text=1;
 160                 else if (strcmp(*argv,"-modulus") == 0)
 161                         modulus=1;
 162                 else if (strcmp(*argv,"-pubin") == 0)
 163                         pubin=1;
 164                 else if (strcmp(*argv,"-pubout") == 0)
 165                         pubout=1;
 166                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 167                         {
 168                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 169                         badops=1;
 170                         break;
 171                         }
 172                 argc--;
 173                 argv++;
 174                 }
 175
 176         if (badops)
 177                 {
 178 bad:
 179                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 180                 BIO_printf(bio_err,"where options are\n");
 181                 BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
 182                 BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
 183                 BIO_printf(bio_err," -in arg         input file\n");
 184                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 185                 BIO_printf(bio_err," -out arg        output file\n");
 186                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 187                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 188                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 189                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 190 #ifndef OPENSSL_NO_IDEA
 191                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 192 #endif
 193                 BIO_printf(bio_err," -text           print the key in text\n");
 194                 BIO_printf(bio_err," -noout          don't print key out\n");
 195                 BIO_printf(bio_err," -modulus        print the DSA public value\n");
 196                 goto end;
 197                 }
 198
 199         ERR_load_crypto_strings();
 200
 201         if (engine != NULL)
 202                 {
 203                 if((e = ENGINE_by_id(engine)) == NULL)
 204                         {
 205                         BIO_printf(bio_err,"invalid engine \"%s\"\n",
 206                                 engine);
 207                         goto end;
 208                         }
 209                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 210                         {
 211                         BIO_printf(bio_err,"can't use that engine\n");
 212                         goto end;
 213                         }
 214                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
 215                 /* Free our "structural" reference. */
 216                 ENGINE_free(e);
 217                 }
 218
 219         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 220                 BIO_printf(bio_err, "Error getting passwords\n");
 221                 goto end;
 222         }
 223
 224         in=BIO_new(BIO_s_file());
 225         out=BIO_new(BIO_s_file());
 226         if ((in == NULL) || (out == NULL))
 227                 {
 228                 ERR_print_errors(bio_err);
 229                 goto end;
 230                 }
 231
 232         if (infile == NULL)
 233                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 234         else
 235                 {
 236                 if (BIO_read_filename(in,infile) <= 0)
 237                         {
 238                         perror(infile);
 239                         goto end;
 240                         }
 241                 }
 242
 243         BIO_printf(bio_err,"read DSA key\n");
 244         if      (informat == FORMAT_ASN1) {
 245                 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL);
 246                 else dsa=d2i_DSAPrivateKey_bio(in,NULL);
 247         } else if (informat == FORMAT_PEM) {
 248                 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL);
 249                 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin);
 250         } else
 251                 {
 252                 BIO_printf(bio_err,"bad input format specified for key\n");
 253                 goto end;
 254                 }
 255         if (dsa == NULL)
 256                 {
 257                 BIO_printf(bio_err,"unable to load Key\n");
 258                 ERR_print_errors(bio_err);
 259                 goto end;
 260                 }
 261
 262         if (outfile == NULL)
 263                 {
 264                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 265 #ifdef VMS
 266                 {
 267                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 268                 out = BIO_push(tmpbio, out);
 269                 }
 270 #endif
 271                 }
 272         else
 273                 {
 274                 if (BIO_write_filename(out,outfile) <= 0)
 275                         {
 276                         perror(outfile);
 277                         goto end;
 278                         }
 279                 }
 280
 281         if (text)
 282                 if (!DSA_print(out,dsa,0))
 283                         {
 284                         perror(outfile);
 285                         ERR_print_errors(bio_err);
 286                         goto end;
 287                         }
 288
 289         if (modulus)
 290                 {
 291                 fprintf(stdout,"Public Key=");
 292                 BN_print(out,dsa->pub_key);
 293                 fprintf(stdout,"\n");
 294                 }
 295
 296         if (noout) goto end;
 297         BIO_printf(bio_err,"writing DSA key\n");
 298         if      (outformat == FORMAT_ASN1) {
 299                 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
 300                 else i=i2d_DSAPrivateKey_bio(out,dsa);
 301         } else if (outformat == FORMAT_PEM) {
 302                 if(pubin || pubout)
 303                         i=PEM_write_bio_DSA_PUBKEY(out,dsa);
 304                 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
 305                                                         NULL,0,NULL, passout);
 306         } else {
 307                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 308                 goto end;
 309                 }
 310         if (!i)
 311                 {
 312                 BIO_printf(bio_err,"unable to write private key\n");
 313                 ERR_print_errors(bio_err);
 314                 }
 315         else
 316                 ret=0;
 317 end:
 318         if(in != NULL) BIO_free(in);
 319         if(out != NULL) BIO_free_all(out);
 320         if(dsa != NULL) DSA_free(dsa);
 321         if(passin) OPENSSL_free(passin);
 322         if(passout) OPENSSL_free(passout);
 323         EXIT(ret);
 324         }
 325 #endif