crypto/openssl-0.9.7e/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
  72 #undef PROG
  73 #define PROG    dsa_main
  74
  75 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  76  * -outform arg - output format - default PEM
  77  * -in arg      - input file - default stdin
  78  * -out arg     - output file - default stdout
  79  * -des         - encrypt output if PEM format with DES in cbc mode
  80  * -des3        - encrypt output if PEM format
  81  * -idea        - encrypt output if PEM format
  82  * -aes128      - encrypt output if PEM format
  83  * -aes192      - encrypt output if PEM format
  84  * -aes256      - encrypt output if PEM format
  85  * -text        - print a text version
  86  * -modulus     - print the DSA public key
  87  */
  88
  89 int MAIN(int, char **);
  90
  91 int MAIN(int argc, char **argv)
  92         {
  93 #ifndef OPENSSL_NO_ENGINE
  94         ENGINE *e = NULL;
  95 #endif
  96         int ret=1;
  97         DSA *dsa=NULL;
  98         int i,badops=0;
  99         const EVP_CIPHER *enc=NULL;
 100         BIO *in=NULL,*out=NULL;
 101         int informat,outformat,text=0,noout=0;
 102         int pubin = 0, pubout = 0;
 103         char *infile,*outfile,*prog;
 104 #ifndef OPENSSL_NO_ENGINE
 105         char *engine;
 106 #endif
 107         char *passargin = NULL, *passargout = NULL;
 108         char *passin = NULL, *passout = NULL;
 109         int modulus=0;
 110
 111         apps_startup();
 112
 113         if (bio_err == NULL)
 114                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 115                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 116
 117         if (!load_config(bio_err, NULL))
 118                 goto end;
 119
 120 #ifndef OPENSSL_NO_ENGINE
 121         engine=NULL;
 122 #endif
 123         infile=NULL;
 124         outfile=NULL;
 125         informat=FORMAT_PEM;
 126         outformat=FORMAT_PEM;
 127
 128         prog=argv[0];
 129         argc--;
 130         argv++;
 131         while (argc >= 1)
 132                 {
 133                 if      (strcmp(*argv,"-inform") == 0)
 134                         {
 135                         if (--argc < 1) goto bad;
 136                         informat=str2fmt(*(++argv));
 137                         }
 138                 else if (strcmp(*argv,"-outform") == 0)
 139                         {
 140                         if (--argc < 1) goto bad;
 141                         outformat=str2fmt(*(++argv));
 142                         }
 143                 else if (strcmp(*argv,"-in") == 0)
 144                         {
 145                         if (--argc < 1) goto bad;
 146                         infile= *(++argv);
 147                         }
 148                 else if (strcmp(*argv,"-out") == 0)
 149                         {
 150                         if (--argc < 1) goto bad;
 151                         outfile= *(++argv);
 152                         }
 153                 else if (strcmp(*argv,"-passin") == 0)
 154                         {
 155                         if (--argc < 1) goto bad;
 156                         passargin= *(++argv);
 157                         }
 158                 else if (strcmp(*argv,"-passout") == 0)
 159                         {
 160                         if (--argc < 1) goto bad;
 161                         passargout= *(++argv);
 162                         }
 163 #ifndef OPENSSL_NO_ENGINE
 164                 else if (strcmp(*argv,"-engine") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         engine= *(++argv);
 168                         }
 169 #endif
 170                 else if (strcmp(*argv,"-noout") == 0)
 171                         noout=1;
 172                 else if (strcmp(*argv,"-text") == 0)
 173                         text=1;
 174                 else if (strcmp(*argv,"-modulus") == 0)
 175                         modulus=1;
 176                 else if (strcmp(*argv,"-pubin") == 0)
 177                         pubin=1;
 178                 else if (strcmp(*argv,"-pubout") == 0)
 179                         pubout=1;
 180                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 181                         {
 182                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 183                         badops=1;
 184                         break;
 185                         }
 186                 argc--;
 187                 argv++;
 188                 }
 189
 190         if (badops)
 191                 {
 192 bad:
 193                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 194                 BIO_printf(bio_err,"where options are\n");
 195                 BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
 196                 BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
 197                 BIO_printf(bio_err," -in arg         input file\n");
 198                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 199                 BIO_printf(bio_err," -out arg        output file\n");
 200                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 201 #ifndef OPENSSL_NO_ENGINE
 202                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 203 #endif
 204                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 205                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 206 #ifndef OPENSSL_NO_IDEA
 207                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 208 #endif
 209 #ifndef OPENSSL_NO_AES
 210                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 211                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 212 #endif
 213                 BIO_printf(bio_err," -text           print the key in text\n");
 214                 BIO_printf(bio_err," -noout          don't print key out\n");
 215                 BIO_printf(bio_err," -modulus        print the DSA public value\n");
 216                 goto end;
 217                 }
 218
 219         ERR_load_crypto_strings();
 220
 221 #ifndef OPENSSL_NO_ENGINE
 222         e = setup_engine(bio_err, engine, 0);
 223 #endif
 224
 225         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 226                 BIO_printf(bio_err, "Error getting passwords\n");
 227                 goto end;
 228         }
 229
 230         in=BIO_new(BIO_s_file());
 231         out=BIO_new(BIO_s_file());
 232         if ((in == NULL) || (out == NULL))
 233                 {
 234                 ERR_print_errors(bio_err);
 235                 goto end;
 236                 }
 237
 238         if (infile == NULL)
 239                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 240         else
 241                 {
 242                 if (BIO_read_filename(in,infile) <= 0)
 243                         {
 244                         perror(infile);
 245                         goto end;
 246                         }
 247                 }
 248
 249         BIO_printf(bio_err,"read DSA key\n");
 250         if      (informat == FORMAT_ASN1) {
 251                 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL);
 252                 else dsa=d2i_DSAPrivateKey_bio(in,NULL);
 253         } else if (informat == FORMAT_PEM) {
 254                 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL);
 255                 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin);
 256         } else
 257                 {
 258                 BIO_printf(bio_err,"bad input format specified for key\n");
 259                 goto end;
 260                 }
 261         if (dsa == NULL)
 262                 {
 263                 BIO_printf(bio_err,"unable to load Key\n");
 264                 ERR_print_errors(bio_err);
 265                 goto end;
 266                 }
 267
 268         if (outfile == NULL)
 269                 {
 270                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 271 #ifdef OPENSSL_SYS_VMS
 272                 {
 273                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 274                 out = BIO_push(tmpbio, out);
 275                 }
 276 #endif
 277                 }
 278         else
 279                 {
 280                 if (BIO_write_filename(out,outfile) <= 0)
 281                         {
 282                         perror(outfile);
 283                         goto end;
 284                         }
 285                 }
 286
 287         if (text)
 288                 if (!DSA_print(out,dsa,0))
 289                         {
 290                         perror(outfile);
 291                         ERR_print_errors(bio_err);
 292                         goto end;
 293                         }
 294
 295         if (modulus)
 296                 {
 297                 fprintf(stdout,"Public Key=");
 298                 BN_print(out,dsa->pub_key);
 299                 fprintf(stdout,"\n");
 300                 }
 301
 302         if (noout) goto end;
 303         BIO_printf(bio_err,"writing DSA key\n");
 304         if      (outformat == FORMAT_ASN1) {
 305                 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
 306                 else i=i2d_DSAPrivateKey_bio(out,dsa);
 307         } else if (outformat == FORMAT_PEM) {
 308                 if(pubin || pubout)
 309                         i=PEM_write_bio_DSA_PUBKEY(out,dsa);
 310                 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
 311                                                         NULL,0,NULL, passout);
 312         } else {
 313                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 314                 goto end;
 315                 }
 316         if (!i)
 317                 {
 318                 BIO_printf(bio_err,"unable to write private key\n");
 319                 ERR_print_errors(bio_err);
 320                 }
 321         else
 322                 ret=0;
 323 end:
 324         if(in != NULL) BIO_free(in);
 325         if(out != NULL) BIO_free_all(out);
 326         if(dsa != NULL) DSA_free(dsa);
 327         if(passin) OPENSSL_free(passin);
 328         if(passout) OPENSSL_free(passout);
 329         apps_shutdown();
 330         OPENSSL_EXIT(ret);
 331         }
 332 #endif