apps/dgst.c

   1 /* apps/dgst.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 <stdio.h>
  60 #include <string.h>
  61 #include <stdlib.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/evp.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/pem.h>
  69
  70 #undef BUFSIZE
  71 #define BUFSIZE 1024*8
  72
  73 #undef PROG
  74 #define PROG    dgst_main
  75
  76 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
  77           EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
  78           const char *file);
  79
  80 int MAIN(int, char **);
  81
  82 int MAIN(int argc, char **argv)
  83         {
  84         ENGINE *e = NULL;
  85         unsigned char *buf=NULL;
  86         int i,err=0;
  87         const EVP_MD *md=NULL,*m;
  88         BIO *in=NULL,*inp;
  89         BIO *bmd=NULL;
  90         BIO *out = NULL;
  91         const char *name;
  92 #define PROG_NAME_SIZE  39
  93         char pname[PROG_NAME_SIZE+1];
  94         int separator=0;
  95         int debug=0;
  96         int keyform=FORMAT_PEM;
  97         const char *outfile = NULL, *keyfile = NULL;
  98         const char *sigfile = NULL, *randfile = NULL;
  99         int out_bin = -1, want_pub = 0, do_verify = 0;
 100         EVP_PKEY *sigkey = NULL;
 101         unsigned char *sigbuf = NULL;
 102         int siglen = 0;
 103         char *passargin = NULL, *passin = NULL;
 104 #ifndef OPENSSL_NO_ENGINE
 105         char *engine=NULL;
 106 #endif
 107
 108         apps_startup();
 109
 110         if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
 111                 {
 112                 BIO_printf(bio_err,"out of memory\n");
 113                 goto end;
 114                 }
 115         if (bio_err == NULL)
 116                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 117                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 118
 119         if (!load_config(bio_err, NULL))
 120                 goto end;
 121
 122         /* first check the program name */
 123         program_name(argv[0],pname,sizeof pname);
 124
 125         md=EVP_get_digestbyname(pname);
 126
 127         argc--;
 128         argv++;
 129         while (argc > 0)
 130                 {
 131                 if ((*argv)[0] != '-') break;
 132                 if (strcmp(*argv,"-c") == 0)
 133                         separator=1;
 134                 else if (strcmp(*argv,"-rand") == 0)
 135                         {
 136                         if (--argc < 1) break;
 137                         randfile=*(++argv);
 138                         }
 139                 else if (strcmp(*argv,"-out") == 0)
 140                         {
 141                         if (--argc < 1) break;
 142                         outfile=*(++argv);
 143                         }
 144                 else if (strcmp(*argv,"-sign") == 0)
 145                         {
 146                         if (--argc < 1) break;
 147                         keyfile=*(++argv);
 148                         }
 149                 else if (!strcmp(*argv,"-passin"))
 150                         {
 151                         if (--argc < 1)
 152                                 break;
 153                         passargin=*++argv;
 154                         }
 155                 else if (strcmp(*argv,"-verify") == 0)
 156                         {
 157                         if (--argc < 1) break;
 158                         keyfile=*(++argv);
 159                         want_pub = 1;
 160                         do_verify = 1;
 161                         }
 162                 else if (strcmp(*argv,"-prverify") == 0)
 163                         {
 164                         if (--argc < 1) break;
 165                         keyfile=*(++argv);
 166                         do_verify = 1;
 167                         }
 168                 else if (strcmp(*argv,"-signature") == 0)
 169                         {
 170                         if (--argc < 1) break;
 171                         sigfile=*(++argv);
 172                         }
 173                 else if (strcmp(*argv,"-keyform") == 0)
 174                         {
 175                         if (--argc < 1) break;
 176                         keyform=str2fmt(*(++argv));
 177                         }
 178 #ifndef OPENSSL_NO_ENGINE
 179                 else if (strcmp(*argv,"-engine") == 0)
 180                         {
 181                         if (--argc < 1) break;
 182                         engine= *(++argv);
 183                         }
 184 #endif
 185                 else if (strcmp(*argv,"-hex") == 0)
 186                         out_bin = 0;
 187                 else if (strcmp(*argv,"-binary") == 0)
 188                         out_bin = 1;
 189                 else if (strcmp(*argv,"-d") == 0)
 190                         debug=1;
 191                 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
 192                         md=m;
 193                 else
 194                         break;
 195                 argc--;
 196                 argv++;
 197                 }
 198
 199         if (md == NULL)
 200                 md=EVP_md5();
 201
 202         if(do_verify && !sigfile) {
 203                 BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
 204                 err = 1;
 205                 goto end;
 206         }
 207
 208         if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
 209                 {
 210                 BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 211                 BIO_printf(bio_err,"options are\n");
 212                 BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
 213                 BIO_printf(bio_err,"-d              to output debug info\n");
 214                 BIO_printf(bio_err,"-hex            output as hex dump\n");
 215                 BIO_printf(bio_err,"-binary         output in binary form\n");
 216                 BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
 217                 BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
 218                 BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
 219                 BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\n");
 220                 BIO_printf(bio_err,"-signature file signature to verify\n");
 221                 BIO_printf(bio_err,"-binary         output in binary form\n");
 222 #ifndef OPENSSL_NO_ENGINE
 223                 BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
 224 #endif
 225
 226                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm (default)\n",
 227                         LN_md5,LN_md5);
 228                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 229                         LN_md4,LN_md4);
 230                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 231                         LN_md2,LN_md2);
 232 #ifndef OPENSSL_NO_SHA
 233                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 234                         LN_sha1,LN_sha1);
 235 #ifndef OPENSSL_NO_SHA256
 236                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 237                         LN_sha224,LN_sha224);
 238                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 239                         LN_sha256,LN_sha256);
 240 #endif
 241 #ifndef OPENSSL_NO_SHA512
 242                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 243                         LN_sha384,LN_sha384);
 244                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 245                         LN_sha512,LN_sha512);
 246 #endif
 247 #endif
 248                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 249                         LN_mdc2,LN_mdc2);
 250                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 251                         LN_ripemd160,LN_ripemd160);
 252 #ifndef OPENSSL_NO_WHIRLPOOL
 253                 BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
 254                         SN_whirlpool,SN_whirlpool);
 255 #endif
 256                 err=1;
 257                 goto end;
 258                 }
 259
 260 #ifndef OPENSSL_NO_ENGINE
 261         e = setup_engine(bio_err, engine, 0);
 262 #endif
 263
 264         in=BIO_new(BIO_s_file());
 265         bmd=BIO_new(BIO_f_md());
 266         if (debug)
 267                 {
 268                 BIO_set_callback(in,BIO_debug_callback);
 269                 /* needed for windows 3.1 */
 270                 BIO_set_callback_arg(in,bio_err);
 271                 }
 272
 273         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 274                 {
 275                 BIO_printf(bio_err, "Error getting password\n");
 276                 goto end;
 277                 }
 278
 279         if ((in == NULL) || (bmd == NULL))
 280                 {
 281                 ERR_print_errors(bio_err);
 282                 goto end;
 283                 }
 284
 285         if(out_bin == -1) {
 286                 if(keyfile) out_bin = 1;
 287                 else out_bin = 0;
 288         }
 289
 290         if(randfile)
 291                 app_RAND_load_file(randfile, bio_err, 0);
 292
 293         if(outfile) {
 294                 if(out_bin)
 295                         out = BIO_new_file(outfile, "wb");
 296                 else    out = BIO_new_file(outfile, "w");
 297         } else {
 298                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 299 #ifdef OPENSSL_SYS_VMS
 300                 {
 301                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 302                 out = BIO_push(tmpbio, out);
 303                 }
 304 #endif
 305         }
 306
 307         if(!out) {
 308                 BIO_printf(bio_err, "Error opening output file %s\n",
 309                                         outfile ? outfile : "(stdout)");
 310                 ERR_print_errors(bio_err);
 311                 goto end;
 312         }
 313
 314         if(keyfile)
 315                 {
 316                 if (want_pub)
 317                         sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
 318                                 e, "key file");
 319                 else
 320                         sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
 321                                 e, "key file");
 322                 if (!sigkey)
 323                         {
 324                         /* load_[pub]key() has already printed an appropriate
 325                            message */
 326                         goto end;
 327                         }
 328                 }
 329
 330         if(sigfile && sigkey) {
 331                 BIO *sigbio;
 332                 sigbio = BIO_new_file(sigfile, "rb");
 333                 siglen = EVP_PKEY_size(sigkey);
 334                 sigbuf = OPENSSL_malloc(siglen);
 335                 if(!sigbio) {
 336                         BIO_printf(bio_err, "Error opening signature file %s\n",
 337                                                                 sigfile);
 338                         ERR_print_errors(bio_err);
 339                         goto end;
 340                 }
 341                 siglen = BIO_read(sigbio, sigbuf, siglen);
 342                 BIO_free(sigbio);
 343                 if(siglen <= 0) {
 344                         BIO_printf(bio_err, "Error reading signature file %s\n",
 345                                                                 sigfile);
 346                         ERR_print_errors(bio_err);
 347                         goto end;
 348                 }
 349         }
 350
 351
 352
 353         /* we use md as a filter, reading from 'in' */
 354         if (!BIO_set_md(bmd,md))
 355                 {
 356                 BIO_printf(bio_err, "Error setting digest %s\n", pname);
 357                 ERR_print_errors(bio_err);
 358                 goto end;
 359                 }
 360
 361         inp=BIO_push(bmd,in);
 362
 363         if (argc == 0)
 364                 {
 365                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 366                 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
 367                           siglen,"","(stdin)");
 368                 }
 369         else
 370                 {
 371                 name=OBJ_nid2sn(md->type);
 372                 for (i=0; i<argc; i++)
 373                         {
 374                         char *tmp,*tofree=NULL;
 375                         int r;
 376
 377                         if (BIO_read_filename(in,argv[i]) <= 0)
 378                                 {
 379                                 perror(argv[i]);
 380                                 err++;
 381                                 continue;
 382                                 }
 383                         if(!out_bin)
 384                                 {
 385                                 size_t len = strlen(name)+strlen(argv[i])+5;
 386                                 tmp=tofree=OPENSSL_malloc(len);
 387                                 BIO_snprintf(tmp,len,"%s(%s)= ",name,argv[i]);
 388                                 }
 389                         else
 390                                 tmp="";
 391                         r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
 392                                 siglen,tmp,argv[i]);
 393                         if(r)
 394                             err=r;
 395                         if(tofree)
 396                                 OPENSSL_free(tofree);
 397                         (void)BIO_reset(bmd);
 398                         }
 399                 }
 400 end:
 401         if (buf != NULL)
 402                 {
 403                 OPENSSL_cleanse(buf,BUFSIZE);
 404                 OPENSSL_free(buf);
 405                 }
 406         if (in != NULL) BIO_free(in);
 407         if (passin)
 408                 OPENSSL_free(passin);
 409         BIO_free_all(out);
 410         EVP_PKEY_free(sigkey);
 411         if(sigbuf) OPENSSL_free(sigbuf);
 412         if (bmd != NULL) BIO_free(bmd);
 413         apps_shutdown();
 414         OPENSSL_EXIT(err);
 415         }
 416
 417 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 418           EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
 419           const char *file)
 420         {
 421         int len;
 422         int i;
 423
 424         for (;;)
 425                 {
 426                 i=BIO_read(bp,(char *)buf,BUFSIZE);
 427                 if(i < 0)
 428                         {
 429                         BIO_printf(bio_err, "Read Error in %s\n",file);
 430                         ERR_print_errors(bio_err);
 431                         return 1;
 432                         }
 433                 if (i == 0) break;
 434                 }
 435         if(sigin)
 436                 {
 437                 EVP_MD_CTX *ctx;
 438                 BIO_get_md_ctx(bp, &ctx);
 439                 i = EVP_VerifyFinal(ctx, sigin, (unsigned int)siglen, key);
 440                 if(i > 0)
 441                         BIO_printf(out, "Verified OK\n");
 442                 else if(i == 0)
 443                         {
 444                         BIO_printf(out, "Verification Failure\n");
 445                         return 1;
 446                         }
 447                 else
 448                         {
 449                         BIO_printf(bio_err, "Error Verifying Data\n");
 450                         ERR_print_errors(bio_err);
 451                         return 1;
 452                         }
 453                 return 0;
 454                 }
 455         if(key)
 456                 {
 457                 EVP_MD_CTX *ctx;
 458                 BIO_get_md_ctx(bp, &ctx);
 459                 if(!EVP_SignFinal(ctx, buf, (unsigned int *)&len, key))
 460                         {
 461                         BIO_printf(bio_err, "Error Signing Data\n");
 462                         ERR_print_errors(bio_err);
 463                         return 1;
 464                         }
 465                 }
 466         else
 467                 len=BIO_gets(bp,(char *)buf,BUFSIZE);
 468
 469         if(binout) BIO_write(out, buf, len);
 470         else
 471                 {
 472                 BIO_write(out,title,strlen(title));
 473                 for (i=0; i<len; i++)
 474                         {
 475                         if (sep && (i != 0))
 476                                 BIO_printf(out, ":");
 477                         BIO_printf(out, "%02x",buf[i]);
 478                         }
 479                 BIO_printf(out, "\n");
 480                 }
 481         return 0;
 482         }
 483