crypto/openssl-0.9/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 #include <openssl/opensslconf.h>        /* for OPENSSL_NO_DSA */
  60 #ifndef OPENSSL_NO_DSA
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64 #include <time.h>
  65 #include "apps.h"
  66 #include <openssl/bio.h>
  67 #include <openssl/err.h>
  68 #include <openssl/dsa.h>
  69 #include <openssl/evp.h>
  70 #include <openssl/x509.h>
  71 #include <openssl/pem.h>
  72 #include <openssl/bn.h>
  73
  74 #undef PROG
  75 #define PROG    dsa_main
  76
  77 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  78  * -outform arg - output format - default PEM
  79  * -in arg      - input file - default stdin
  80  * -out arg     - output file - default stdout
  81  * -des         - encrypt output if PEM format with DES in cbc mode
  82  * -des3        - encrypt output if PEM format
  83  * -idea        - encrypt output if PEM format
  84  * -aes128      - encrypt output if PEM format
  85  * -aes192      - encrypt output if PEM format
  86  * -aes256      - encrypt output if PEM format
  87  * -camellia128 - encrypt output if PEM format
  88  * -camellia192 - encrypt output if PEM format
  89  * -camellia256 - encrypt output if PEM format
  90  * -seed        - encrypt output if PEM format
  91  * -text        - print a text version
  92  * -modulus     - print the DSA public key
  93  */
  94
  95 int MAIN(int, char **);
  96
  97 int MAIN(int argc, char **argv)
  98         {
  99 #ifndef OPENSSL_NO_ENGINE
 100         ENGINE *e = NULL;
 101 #endif
 102         int ret=1;
 103         DSA *dsa=NULL;
 104         int i,badops=0;
 105         const EVP_CIPHER *enc=NULL;
 106         BIO *in=NULL,*out=NULL;
 107         int informat,outformat,text=0,noout=0;
 108         int pubin = 0, pubout = 0;
 109         char *infile,*outfile,*prog;
 110 #ifndef OPENSSL_NO_ENGINE
 111         char *engine;
 112 #endif
 113         char *passargin = NULL, *passargout = NULL;
 114         char *passin = NULL, *passout = NULL;
 115         int modulus=0;
 116
 117         apps_startup();
 118
 119         if (bio_err == NULL)
 120                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 121                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 122
 123         if (!load_config(bio_err, NULL))
 124                 goto end;
 125
 126 #ifndef OPENSSL_NO_ENGINE
 127         engine=NULL;
 128 #endif
 129         infile=NULL;
 130         outfile=NULL;
 131         informat=FORMAT_PEM;
 132         outformat=FORMAT_PEM;
 133
 134         prog=argv[0];
 135         argc--;
 136         argv++;
 137         while (argc >= 1)
 138                 {
 139                 if      (strcmp(*argv,"-inform") == 0)
 140                         {
 141                         if (--argc < 1) goto bad;
 142                         informat=str2fmt(*(++argv));
 143                         }
 144                 else if (strcmp(*argv,"-outform") == 0)
 145                         {
 146                         if (--argc < 1) goto bad;
 147                         outformat=str2fmt(*(++argv));
 148                         }
 149                 else if (strcmp(*argv,"-in") == 0)
 150                         {
 151                         if (--argc < 1) goto bad;
 152                         infile= *(++argv);
 153                         }
 154                 else if (strcmp(*argv,"-out") == 0)
 155                         {
 156                         if (--argc < 1) goto bad;
 157                         outfile= *(++argv);
 158                         }
 159                 else if (strcmp(*argv,"-passin") == 0)
 160                         {
 161                         if (--argc < 1) goto bad;
 162                         passargin= *(++argv);
 163                         }
 164                 else if (strcmp(*argv,"-passout") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         passargout= *(++argv);
 168                         }
 169 #ifndef OPENSSL_NO_ENGINE
 170                 else if (strcmp(*argv,"-engine") == 0)
 171                         {
 172                         if (--argc < 1) goto bad;
 173                         engine= *(++argv);
 174                         }
 175 #endif
 176                 else if (strcmp(*argv,"-noout") == 0)
 177                         noout=1;
 178                 else if (strcmp(*argv,"-text") == 0)
 179                         text=1;
 180                 else if (strcmp(*argv,"-modulus") == 0)
 181                         modulus=1;
 182                 else if (strcmp(*argv,"-pubin") == 0)
 183                         pubin=1;
 184                 else if (strcmp(*argv,"-pubout") == 0)
 185                         pubout=1;
 186                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 187                         {
 188                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 189                         badops=1;
 190                         break;
 191                         }
 192                 argc--;
 193                 argv++;
 194                 }
 195
 196         if (badops)
 197                 {
 198 bad:
 199                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 200                 BIO_printf(bio_err,"where options are\n");
 201                 BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
 202                 BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
 203                 BIO_printf(bio_err," -in arg         input file\n");
 204                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 205                 BIO_printf(bio_err," -out arg        output file\n");
 206                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 207 #ifndef OPENSSL_NO_ENGINE
 208                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 209 #endif
 210                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 211                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 212 #ifndef OPENSSL_NO_IDEA
 213                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 214 #endif
 215 #ifndef OPENSSL_NO_AES
 216                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 217                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 218 #endif
 219 #ifndef OPENSSL_NO_CAMELLIA
 220                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 221                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 222 #endif
 223 #ifndef OPENSSL_NO_SEED
 224                 BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
 225 #endif
 226                 BIO_printf(bio_err," -text           print the key in text\n");
 227                 BIO_printf(bio_err," -noout          don't print key out\n");
 228                 BIO_printf(bio_err," -modulus        print the DSA public value\n");
 229                 goto end;
 230                 }
 231
 232         ERR_load_crypto_strings();
 233
 234 #ifndef OPENSSL_NO_ENGINE
 235         e = setup_engine(bio_err, engine, 0);
 236 #endif
 237
 238         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 239                 BIO_printf(bio_err, "Error getting passwords\n");
 240                 goto end;
 241         }
 242
 243         in=BIO_new(BIO_s_file());
 244         out=BIO_new(BIO_s_file());
 245         if ((in == NULL) || (out == NULL))
 246                 {
 247                 ERR_print_errors(bio_err);
 248                 goto end;
 249                 }
 250
 251         if (infile == NULL)
 252                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 253         else
 254                 {
 255                 if (BIO_read_filename(in,infile) <= 0)
 256                         {
 257                         perror(infile);
 258                         goto end;
 259                         }
 260                 }
 261
 262         BIO_printf(bio_err,"read DSA key\n");
 263         if      (informat == FORMAT_ASN1) {
 264                 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL);
 265                 else dsa=d2i_DSAPrivateKey_bio(in,NULL);
 266         } else if (informat == FORMAT_PEM) {
 267                 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL);
 268                 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin);
 269         } else
 270                 {
 271                 BIO_printf(bio_err,"bad input format specified for key\n");
 272                 goto end;
 273                 }
 274         if (dsa == NULL)
 275                 {
 276                 BIO_printf(bio_err,"unable to load Key\n");
 277                 ERR_print_errors(bio_err);
 278                 goto end;
 279                 }
 280
 281         if (outfile == NULL)
 282                 {
 283                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 284 #ifdef OPENSSL_SYS_VMS
 285                 {
 286                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 287                 out = BIO_push(tmpbio, out);
 288                 }
 289 #endif
 290                 }
 291         else
 292                 {
 293                 if (BIO_write_filename(out,outfile) <= 0)
 294                         {
 295                         perror(outfile);
 296                         goto end;
 297                         }
 298                 }
 299
 300         if (text)
 301                 if (!DSA_print(out,dsa,0))
 302                         {
 303                         perror(outfile);
 304                         ERR_print_errors(bio_err);
 305                         goto end;
 306                         }
 307
 308         if (modulus)
 309                 {
 310                 fprintf(stdout,"Public Key=");
 311                 BN_print(out,dsa->pub_key);
 312                 fprintf(stdout,"\n");
 313                 }
 314
 315         if (noout) goto end;
 316         BIO_printf(bio_err,"writing DSA key\n");
 317         if      (outformat == FORMAT_ASN1) {
 318                 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
 319                 else i=i2d_DSAPrivateKey_bio(out,dsa);
 320         } else if (outformat == FORMAT_PEM) {
 321                 if(pubin || pubout)
 322                         i=PEM_write_bio_DSA_PUBKEY(out,dsa);
 323                 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
 324                                                         NULL,0,NULL, passout);
 325         } else {
 326                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 327                 goto end;
 328                 }
 329         if (!i)
 330                 {
 331                 BIO_printf(bio_err,"unable to write private key\n");
 332                 ERR_print_errors(bio_err);
 333                 }
 334         else
 335                 ret=0;
 336 end:
 337         if(in != NULL) BIO_free(in);
 338         if(out != NULL) BIO_free_all(out);
 339         if(dsa != NULL) DSA_free(dsa);
 340         if(passin) OPENSSL_free(passin);
 341         if(passout) OPENSSL_free(passout);
 342         apps_shutdown();
 343         OPENSSL_EXIT(ret);
 344         }
 345 #endif