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         int pvk_encr = 2;
 118
 119         apps_startup();
 120
 121         if (bio_err == NULL)
 122                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 123                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 124
 125         if (!load_config(bio_err, NULL))
 126                 goto end;
 127
 128 #ifndef OPENSSL_NO_ENGINE
 129         engine=NULL;
 130 #endif
 131         infile=NULL;
 132         outfile=NULL;
 133         informat=FORMAT_PEM;
 134         outformat=FORMAT_PEM;
 135
 136         prog=argv[0];
 137         argc--;
 138         argv++;
 139         while (argc >= 1)
 140                 {
 141                 if      (strcmp(*argv,"-inform") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         informat=str2fmt(*(++argv));
 145                         }
 146                 else if (strcmp(*argv,"-outform") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         outformat=str2fmt(*(++argv));
 150                         }
 151                 else if (strcmp(*argv,"-in") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         infile= *(++argv);
 155                         }
 156                 else if (strcmp(*argv,"-out") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         outfile= *(++argv);
 160                         }
 161                 else if (strcmp(*argv,"-passin") == 0)
 162                         {
 163                         if (--argc < 1) goto bad;
 164                         passargin= *(++argv);
 165                         }
 166                 else if (strcmp(*argv,"-passout") == 0)
 167                         {
 168                         if (--argc < 1) goto bad;
 169                         passargout= *(++argv);
 170                         }
 171 #ifndef OPENSSL_NO_ENGINE
 172                 else if (strcmp(*argv,"-engine") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         engine= *(++argv);
 176                         }
 177 #endif
 178                 else if (strcmp(*argv,"-pvk-strong") == 0)
 179                         pvk_encr=2;
 180                 else if (strcmp(*argv,"-pvk-weak") == 0)
 181                         pvk_encr=1;
 182                 else if (strcmp(*argv,"-pvk-none") == 0)
 183                         pvk_encr=0;
 184                 else if (strcmp(*argv,"-noout") == 0)
 185                         noout=1;
 186                 else if (strcmp(*argv,"-text") == 0)
 187                         text=1;
 188                 else if (strcmp(*argv,"-modulus") == 0)
 189                         modulus=1;
 190                 else if (strcmp(*argv,"-pubin") == 0)
 191                         pubin=1;
 192                 else if (strcmp(*argv,"-pubout") == 0)
 193                         pubout=1;
 194                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 195                         {
 196                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 197                         badops=1;
 198                         break;
 199                         }
 200                 argc--;
 201                 argv++;
 202                 }
 203
 204         if (badops)
 205                 {
 206 bad:
 207                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 208                 BIO_printf(bio_err,"where options are\n");
 209                 BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
 210                 BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
 211                 BIO_printf(bio_err," -in arg         input file\n");
 212                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 213                 BIO_printf(bio_err," -out arg        output file\n");
 214                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 215 #ifndef OPENSSL_NO_ENGINE
 216                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 217 #endif
 218                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 219                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 220 #ifndef OPENSSL_NO_IDEA
 221                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 222 #endif
 223 #ifndef OPENSSL_NO_AES
 224                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 225                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 226 #endif
 227 #ifndef OPENSSL_NO_CAMELLIA
 228                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 229                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 230 #endif
 231 #ifndef OPENSSL_NO_SEED
 232                 BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
 233 #endif
 234                 BIO_printf(bio_err," -text           print the key in text\n");
 235                 BIO_printf(bio_err," -noout          don't print key out\n");
 236                 BIO_printf(bio_err," -modulus        print the DSA public value\n");
 237                 goto end;
 238                 }
 239
 240         ERR_load_crypto_strings();
 241
 242 #ifndef OPENSSL_NO_ENGINE
 243         e = setup_engine(bio_err, engine, 0);
 244 #endif
 245
 246         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 247                 BIO_printf(bio_err, "Error getting passwords\n");
 248                 goto end;
 249         }
 250
 251         in=BIO_new(BIO_s_file());
 252         out=BIO_new(BIO_s_file());
 253         if ((in == NULL) || (out == NULL))
 254                 {
 255                 ERR_print_errors(bio_err);
 256                 goto end;
 257                 }
 258
 259         if (infile == NULL)
 260                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 261         else
 262                 {
 263                 if (BIO_read_filename(in,infile) <= 0)
 264                         {
 265                         perror(infile);
 266                         goto end;
 267                         }
 268                 }
 269
 270         BIO_printf(bio_err,"read DSA key\n");
 271
 272                 {
 273                 EVP_PKEY        *pkey;
 274
 275                 if (pubin)
 276                         pkey = load_pubkey(bio_err, infile, informat, 1,
 277                                 passin, e, "Public Key");
 278                 else
 279                         pkey = load_key(bio_err, infile, informat, 1,
 280                                 passin, e, "Private Key");
 281
 282                 if (pkey)
 283                         {
 284                         dsa = EVP_PKEY_get1_DSA(pkey);
 285                         EVP_PKEY_free(pkey);
 286                         }
 287                 }
 288         if (dsa == NULL)
 289                 {
 290                 BIO_printf(bio_err,"unable to load Key\n");
 291                 ERR_print_errors(bio_err);
 292                 goto end;
 293                 }
 294
 295         if (outfile == NULL)
 296                 {
 297                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 298 #ifdef OPENSSL_SYS_VMS
 299                 {
 300                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 301                 out = BIO_push(tmpbio, out);
 302                 }
 303 #endif
 304                 }
 305         else
 306                 {
 307                 if (BIO_write_filename(out,outfile) <= 0)
 308                         {
 309                         perror(outfile);
 310                         goto end;
 311                         }
 312                 }
 313
 314         if (text)
 315                 if (!DSA_print(out,dsa,0))
 316                         {
 317                         perror(outfile);
 318                         ERR_print_errors(bio_err);
 319                         goto end;
 320                         }
 321
 322         if (modulus)
 323                 {
 324                 fprintf(stdout,"Public Key=");
 325                 BN_print(out,dsa->pub_key);
 326                 fprintf(stdout,"\n");
 327                 }
 328
 329         if (noout) goto end;
 330         BIO_printf(bio_err,"writing DSA key\n");
 331         if      (outformat == FORMAT_ASN1) {
 332                 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
 333                 else i=i2d_DSAPrivateKey_bio(out,dsa);
 334         } else if (outformat == FORMAT_PEM) {
 335                 if(pubin || pubout)
 336                         i=PEM_write_bio_DSA_PUBKEY(out,dsa);
 337                 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
 338                                                         NULL,0,NULL, passout);
 339         } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 340                 EVP_PKEY *pk;
 341                 pk = EVP_PKEY_new();
 342                 EVP_PKEY_set1_DSA(pk, dsa);
 343                 if (outformat == FORMAT_PVK)
 344                         i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 345                 else if (pubin || pubout)
 346                         i = i2b_PublicKey_bio(out, pk);
 347                 else
 348                         i = i2b_PrivateKey_bio(out, pk);
 349                 EVP_PKEY_free(pk);
 350         } else {
 351                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 352                 goto end;
 353                 }
 354         if (!i)
 355                 {
 356                 BIO_printf(bio_err,"unable to write private key\n");
 357                 ERR_print_errors(bio_err);
 358                 }
 359         else
 360                 ret=0;
 361 end:
 362         if(in != NULL) BIO_free(in);
 363         if(out != NULL) BIO_free_all(out);
 364         if(dsa != NULL) DSA_free(dsa);
 365         if(passin) OPENSSL_free(passin);
 366         if(passout) OPENSSL_free(passout);
 367         apps_shutdown();
 368         OPENSSL_EXIT(ret);
 369         }
 370 #endif