crypto/openssl/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         ENGINE *e = NULL;
 100         int ret=1;
 101         DSA *dsa=NULL;
 102         int i,badops=0;
 103         const EVP_CIPHER *enc=NULL;
 104         BIO *in=NULL,*out=NULL;
 105         int informat,outformat,text=0,noout=0;
 106         int pubin = 0, pubout = 0;
 107         char *infile,*outfile,*prog;
 108 #ifndef OPENSSL_NO_ENGINE
 109         char *engine;
 110 #endif
 111         char *passargin = NULL, *passargout = NULL;
 112         char *passin = NULL, *passout = NULL;
 113         int modulus=0;
 114
 115         apps_startup();
 116
 117         if (bio_err == NULL)
 118                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 119                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 120
 121         if (!load_config(bio_err, NULL))
 122                 goto end;
 123
 124 #ifndef OPENSSL_NO_ENGINE
 125         engine=NULL;
 126 #endif
 127         infile=NULL;
 128         outfile=NULL;
 129         informat=FORMAT_PEM;
 130         outformat=FORMAT_PEM;
 131
 132         prog=argv[0];
 133         argc--;
 134         argv++;
 135         while (argc >= 1)
 136                 {
 137                 if      (strcmp(*argv,"-inform") == 0)
 138                         {
 139                         if (--argc < 1) goto bad;
 140                         informat=str2fmt(*(++argv));
 141                         }
 142                 else if (strcmp(*argv,"-outform") == 0)
 143                         {
 144                         if (--argc < 1) goto bad;
 145                         outformat=str2fmt(*(++argv));
 146                         }
 147                 else if (strcmp(*argv,"-in") == 0)
 148                         {
 149                         if (--argc < 1) goto bad;
 150                         infile= *(++argv);
 151                         }
 152                 else if (strcmp(*argv,"-out") == 0)
 153                         {
 154                         if (--argc < 1) goto bad;
 155                         outfile= *(++argv);
 156                         }
 157                 else if (strcmp(*argv,"-passin") == 0)
 158                         {
 159                         if (--argc < 1) goto bad;
 160                         passargin= *(++argv);
 161                         }
 162                 else if (strcmp(*argv,"-passout") == 0)
 163                         {
 164                         if (--argc < 1) goto bad;
 165                         passargout= *(++argv);
 166                         }
 167 #ifndef OPENSSL_NO_ENGINE
 168                 else if (strcmp(*argv,"-engine") == 0)
 169                         {
 170                         if (--argc < 1) goto bad;
 171                         engine= *(++argv);
 172                         }
 173 #endif
 174                 else if (strcmp(*argv,"-noout") == 0)
 175                         noout=1;
 176                 else if (strcmp(*argv,"-text") == 0)
 177                         text=1;
 178                 else if (strcmp(*argv,"-modulus") == 0)
 179                         modulus=1;
 180                 else if (strcmp(*argv,"-pubin") == 0)
 181                         pubin=1;
 182                 else if (strcmp(*argv,"-pubout") == 0)
 183                         pubout=1;
 184                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 185                         {
 186                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 187                         badops=1;
 188                         break;
 189                         }
 190                 argc--;
 191                 argv++;
 192                 }
 193
 194         if (badops)
 195                 {
 196 bad:
 197                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 198                 BIO_printf(bio_err,"where options are\n");
 199                 BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
 200                 BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
 201                 BIO_printf(bio_err," -in arg         input file\n");
 202                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 203                 BIO_printf(bio_err," -out arg        output file\n");
 204                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 205 #ifndef OPENSSL_NO_ENGINE
 206                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 207 #endif
 208                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 209                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 210 #ifndef OPENSSL_NO_IDEA
 211                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 212 #endif
 213 #ifndef OPENSSL_NO_AES
 214                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 215                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 216 #endif
 217 #ifndef OPENSSL_NO_CAMELLIA
 218                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 219                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 220 #endif
 221 #ifndef OPENSSL_NO_SEED
 222                 BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
 223 #endif
 224                 BIO_printf(bio_err," -text           print the key in text\n");
 225                 BIO_printf(bio_err," -noout          don't print key out\n");
 226                 BIO_printf(bio_err," -modulus        print the DSA public value\n");
 227                 goto end;
 228                 }
 229
 230         ERR_load_crypto_strings();
 231
 232 #ifndef OPENSSL_NO_ENGINE
 233         e = setup_engine(bio_err, engine, 0);
 234 #endif
 235
 236         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 237                 BIO_printf(bio_err, "Error getting passwords\n");
 238                 goto end;
 239         }
 240
 241         out=BIO_new(BIO_s_file());
 242         if (out == NULL)
 243                 {
 244                 ERR_print_errors(bio_err);
 245                 goto end;
 246                 }
 247
 248         BIO_printf(bio_err,"read DSA key\n");
 249         {
 250                 EVP_PKEY        *pkey;
 251                 if (pubin)
 252                         pkey = load_pubkey(bio_err, infile, informat, 1,
 253                                 passin, e, "Public Key");
 254                 else
 255                         pkey = load_key(bio_err, infile, informat, 1,
 256                                 passin, e, "Private Key");
 257
 258                 if (pkey != NULL)
 259                 dsa = pkey == NULL ? NULL : EVP_PKEY_get1_DSA(pkey);
 260                 EVP_PKEY_free(pkey);
 261         }
 262         if (dsa == NULL)
 263                 {
 264                 BIO_printf(bio_err,"unable to load Key\n");
 265                 ERR_print_errors(bio_err);
 266                 goto end;
 267                 }
 268
 269         if (outfile == NULL)
 270                 {
 271                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 272 #ifdef OPENSSL_SYS_VMS
 273                 {
 274                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 275                 out = BIO_push(tmpbio, out);
 276                 }
 277 #endif
 278                 }
 279         else
 280                 {
 281                 if (BIO_write_filename(out,outfile) <= 0)
 282                         {
 283                         perror(outfile);
 284                         goto end;
 285                         }
 286                 }
 287
 288         if (text)
 289                 if (!DSA_print(out,dsa,0))
 290                         {
 291                         perror(outfile);
 292                         ERR_print_errors(bio_err);
 293                         goto end;
 294                         }
 295
 296         if (modulus)
 297                 {
 298                 fprintf(stdout,"Public Key=");
 299                 BN_print(out,dsa->pub_key);
 300                 fprintf(stdout,"\n");
 301                 }
 302
 303         if (noout) goto end;
 304         BIO_printf(bio_err,"writing DSA key\n");
 305         if      (outformat == FORMAT_ASN1) {
 306                 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
 307                 else i=i2d_DSAPrivateKey_bio(out,dsa);
 308         } else if (outformat == FORMAT_PEM) {
 309                 if(pubin || pubout)
 310                         i=PEM_write_bio_DSA_PUBKEY(out,dsa);
 311                 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
 312                                                         NULL,0,NULL, passout);
 313         } else {
 314                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 315                 goto end;
 316                 }
 317         if (!i)
 318                 {
 319                 BIO_printf(bio_err,"unable to write private key\n");
 320                 ERR_print_errors(bio_err);
 321                 }
 322         else
 323                 ret=0;
 324 end:
 325         if(in != NULL) BIO_free(in);
 326         if(out != NULL) BIO_free_all(out);
 327         if(dsa != NULL) DSA_free(dsa);
 328         if(passin) OPENSSL_free(passin);
 329         if(passout) OPENSSL_free(passout);
 330         apps_shutdown();
 331         OPENSSL_EXIT(ret);
 332         }
 333 #endif