Security framework.
[openssl.git] / 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 #include <openssl/hmac.h>
70
71 #undef BUFSIZE
72 #define BUFSIZE 1024*8
73
74 #undef PROG
75 #define PROG    dgst_main
76
77 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
78           EVP_PKEY *key, unsigned char *sigin, int siglen,
79           const char *sig_name, const char *md_name,
80           const char *file,BIO *bmd);
81
82 static void list_md_fn(const EVP_MD *m,
83                         const char *from, const char *to, void *arg)
84         {
85         const char *mname;
86         /* Skip aliases */
87         if (!m)
88                 return;
89         mname = OBJ_nid2ln(EVP_MD_type(m));
90         /* Skip shortnames */
91         if (strcmp(from, mname))
92                 return;
93         /* Skip clones */
94         if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST)
95                 return;
96         if (strchr(mname, ' '))
97                 mname= EVP_MD_name(m);
98         BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n",
99                         mname, mname);
100         }
101
102 int MAIN(int, char **);
103
104 int MAIN(int argc, char **argv)
105         {
106         ENGINE *e = NULL, *impl = NULL;
107         unsigned char *buf=NULL;
108         int i,err=1;
109         const EVP_MD *md=NULL,*m;
110         BIO *in=NULL,*inp;
111         BIO *bmd=NULL;
112         BIO *out = NULL;
113 #define PROG_NAME_SIZE  39
114         char pname[PROG_NAME_SIZE+1];
115         int separator=0;
116         int debug=0;
117         int keyform=FORMAT_PEM;
118         const char *outfile = NULL, *keyfile = NULL;
119         const char *sigfile = NULL, *randfile = NULL;
120         int out_bin = -1, want_pub = 0, do_verify = 0;
121         EVP_PKEY *sigkey = NULL;
122         unsigned char *sigbuf = NULL;
123         int siglen = 0;
124         char *passargin = NULL, *passin = NULL;
125 #ifndef OPENSSL_NO_ENGINE
126         char *engine=NULL;
127         int engine_impl = 0;
128 #endif
129         char *hmac_key=NULL;
130         char *mac_name=NULL;
131         int non_fips_allow = 0;
132         STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
133
134         apps_startup();
135
136         if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
137                 {
138                 BIO_printf(bio_err,"out of memory\n");
139                 goto end;
140                 }
141         if (bio_err == NULL)
142                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
143                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
144
145         if (!load_config(bio_err, NULL))
146                 goto end;
147
148         /* first check the program name */
149         program_name(argv[0],pname,sizeof pname);
150
151         md=EVP_get_digestbyname(pname);
152
153         argc--;
154         argv++;
155         while (argc > 0)
156                 {
157                 if ((*argv)[0] != '-') break;
158                 if (strcmp(*argv,"-c") == 0)
159                         separator=1;
160                 else if (strcmp(*argv,"-r") == 0)
161                         separator=2;
162                 else if (strcmp(*argv,"-rand") == 0)
163                         {
164                         if (--argc < 1) break;
165                         randfile=*(++argv);
166                         }
167                 else if (strcmp(*argv,"-out") == 0)
168                         {
169                         if (--argc < 1) break;
170                         outfile=*(++argv);
171                         }
172                 else if (strcmp(*argv,"-sign") == 0)
173                         {
174                         if (--argc < 1) break;
175                         keyfile=*(++argv);
176                         }
177                 else if (!strcmp(*argv,"-passin"))
178                         {
179                         if (--argc < 1)
180                                 break;
181                         passargin=*++argv;
182                         }
183                 else if (strcmp(*argv,"-verify") == 0)
184                         {
185                         if (--argc < 1) break;
186                         keyfile=*(++argv);
187                         want_pub = 1;
188                         do_verify = 1;
189                         }
190                 else if (strcmp(*argv,"-prverify") == 0)
191                         {
192                         if (--argc < 1) break;
193                         keyfile=*(++argv);
194                         do_verify = 1;
195                         }
196                 else if (strcmp(*argv,"-signature") == 0)
197                         {
198                         if (--argc < 1) break;
199                         sigfile=*(++argv);
200                         }
201                 else if (strcmp(*argv,"-keyform") == 0)
202                         {
203                         if (--argc < 1) break;
204                         keyform=str2fmt(*(++argv));
205                         }
206 #ifndef OPENSSL_NO_ENGINE
207                 else if (strcmp(*argv,"-engine") == 0)
208                         {
209                         if (--argc < 1) break;
210                         engine= *(++argv);
211                         e = setup_engine(bio_err, engine, 0);
212                         }
213                 else if (strcmp(*argv,"-engine_impl") == 0)
214                         engine_impl = 1;
215 #endif
216                 else if (strcmp(*argv,"-hex") == 0)
217                         out_bin = 0;
218                 else if (strcmp(*argv,"-binary") == 0)
219                         out_bin = 1;
220                 else if (strcmp(*argv,"-d") == 0)
221                         debug=1;
222                 else if (!strcmp(*argv,"-fips-fingerprint"))
223                         hmac_key = "etaonrishdlcupfm";
224                 else if (strcmp(*argv,"-non-fips-allow") == 0)
225                         non_fips_allow=1;
226                 else if (!strcmp(*argv,"-hmac"))
227                         {
228                         if (--argc < 1)
229                                 break;
230                         hmac_key=*++argv;
231                         }
232                 else if (!strcmp(*argv,"-mac"))
233                         {
234                         if (--argc < 1)
235                                 break;
236                         mac_name=*++argv;
237                         }
238                 else if (strcmp(*argv,"-sigopt") == 0)
239                         {
240                         if (--argc < 1)
241                                 break;
242                         if (!sigopts)
243                                 sigopts = sk_OPENSSL_STRING_new_null();
244                         if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
245                                 break;
246                         }
247                 else if (strcmp(*argv,"-macopt") == 0)
248                         {
249                         if (--argc < 1)
250                                 break;
251                         if (!macopts)
252                                 macopts = sk_OPENSSL_STRING_new_null();
253                         if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
254                                 break;
255                         }
256                 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
257                         md=m;
258                 else
259                         break;
260                 argc--;
261                 argv++;
262                 }
263
264
265         if(do_verify && !sigfile) {
266                 BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
267                 goto end;
268         }
269
270         if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
271                 {
272                 BIO_printf(bio_err,"unknown option '%s'\n",*argv);
273                 BIO_printf(bio_err,"options are\n");
274                 BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
275                 BIO_printf(bio_err,"-r              to output the digest in coreutils format\n");
276                 BIO_printf(bio_err,"-d              to output debug info\n");
277                 BIO_printf(bio_err,"-hex            output as hex dump\n");
278                 BIO_printf(bio_err,"-binary         output in binary form\n");
279                 BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
280                 BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
281                 BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
282                 BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\n");
283                 BIO_printf(bio_err,"-out filename   output to filename rather than stdout\n");
284                 BIO_printf(bio_err,"-signature file signature to verify\n");
285                 BIO_printf(bio_err,"-sigopt nm:v    signature parameter\n");
286                 BIO_printf(bio_err,"-hmac key       create hashed MAC with key\n");
287                 BIO_printf(bio_err,"-mac algorithm  create MAC (not neccessarily HMAC)\n"); 
288                 BIO_printf(bio_err,"-macopt nm:v    MAC algorithm parameters or key\n");
289 #ifndef OPENSSL_NO_ENGINE
290                 BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
291 #endif
292
293                 EVP_MD_do_all_sorted(list_md_fn, bio_err);
294                 goto end;
295                 }
296
297 #ifndef OPENSSL_NO_ENGINE
298         if (engine_impl)
299                 impl = e;
300 #endif
301
302         in=BIO_new(BIO_s_file());
303         bmd=BIO_new(BIO_f_md());
304         if (debug)
305                 {
306                 BIO_set_callback(in,BIO_debug_callback);
307                 /* needed for windows 3.1 */
308                 BIO_set_callback_arg(in,(char *)bio_err);
309                 }
310
311         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
312                 {
313                 BIO_printf(bio_err, "Error getting password\n");
314                 goto end;
315                 }
316
317         if ((in == NULL) || (bmd == NULL))
318                 {
319                 ERR_print_errors(bio_err);
320                 goto end;
321                 }
322
323         if(out_bin == -1) {
324                 if(keyfile)
325                         out_bin = 1;
326                 else
327                         out_bin = 0;
328         }
329
330         if(randfile)
331                 app_RAND_load_file(randfile, bio_err, 0);
332
333         if(outfile) {
334                 if(out_bin)
335                         out = BIO_new_file(outfile, "wb");
336                 else    out = BIO_new_file(outfile, "w");
337         } else {
338                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
339 #ifdef OPENSSL_SYS_VMS
340                 {
341                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
342                 out = BIO_push(tmpbio, out);
343                 }
344 #endif
345         }
346
347         if(!out) {
348                 BIO_printf(bio_err, "Error opening output file %s\n", 
349                                         outfile ? outfile : "(stdout)");
350                 ERR_print_errors(bio_err);
351                 goto end;
352         }
353         if ((!!mac_name + !!keyfile + !!hmac_key) > 1)
354                 {
355                 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
356                 goto end;
357                 }
358
359         if(keyfile)
360                 {
361                 if (want_pub)
362                         sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
363                                 e, "key file");
364                 else
365                         sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
366                                 e, "key file");
367                 if (!sigkey)
368                         {
369                         /* load_[pub]key() has already printed an appropriate
370                            message */
371                         goto end;
372                         }
373                 }
374
375         if (mac_name)
376                 {
377                 EVP_PKEY_CTX *mac_ctx = NULL;
378                 int r = 0;
379                 if (!init_gen_str(bio_err, &mac_ctx, mac_name, impl, 0))
380                         goto mac_end;
381                 if (macopts)
382                         {
383                         char *macopt;
384                         for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++)
385                                 {
386                                 macopt = sk_OPENSSL_STRING_value(macopts, i);
387                                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
388                                         {
389                                         BIO_printf(bio_err,
390                                                 "MAC parameter error \"%s\"\n",
391                                                 macopt);
392                                         ERR_print_errors(bio_err);
393                                         goto mac_end;
394                                         }
395                                 }
396                         }
397                 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
398                         {
399                         BIO_puts(bio_err, "Error generating key\n");
400                         ERR_print_errors(bio_err);
401                         goto mac_end;
402                         }
403                 r = 1;
404                 mac_end:
405                 if (mac_ctx)
406                         EVP_PKEY_CTX_free(mac_ctx);
407                 if (r == 0)
408                         goto end;
409                 }
410
411         if (non_fips_allow)
412                 {
413                 EVP_MD_CTX *md_ctx;
414                 BIO_get_md_ctx(bmd,&md_ctx);
415                 EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
416                 }
417
418         if (hmac_key)
419                 {
420                 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
421                                         (unsigned char *)hmac_key, -1);
422                 if (!sigkey)
423                         goto end;
424                 }
425
426         if (sigkey)
427                 {
428                 EVP_MD_CTX *mctx = NULL;
429                 EVP_PKEY_CTX *pctx = NULL;
430                 int r;
431                 if (!BIO_get_md_ctx(bmd, &mctx))
432                         {
433                         BIO_printf(bio_err, "Error getting context\n");
434                         ERR_print_errors(bio_err);
435                         goto end;
436                         }
437                 if (do_verify)
438                         r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
439                 else
440                         r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
441                 if (!r)
442                         {
443                         BIO_printf(bio_err, "Error setting context\n");
444                         ERR_print_errors(bio_err);
445                         goto end;
446                         }
447                 if (sigopts)
448                         {
449                         char *sigopt;
450                         for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++)
451                                 {
452                                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
453                                 if (pkey_ctrl_string(pctx, sigopt) <= 0)
454                                         {
455                                         BIO_printf(bio_err,
456                                                 "parameter error \"%s\"\n",
457                                                 sigopt);
458                                         ERR_print_errors(bio_err);
459                                         goto end;
460                                         }
461                                 }
462                         }
463                 }
464         /* we use md as a filter, reading from 'in' */
465         else
466                 {
467                 EVP_MD_CTX *mctx = NULL;
468                 if (!BIO_get_md_ctx(bmd, &mctx))
469                         {
470                         BIO_printf(bio_err, "Error getting context\n");
471                         ERR_print_errors(bio_err);
472                         goto end;
473                         }
474                 if (md == NULL)
475                         md = EVP_md5(); 
476                 if (!EVP_DigestInit_ex(mctx, md, impl))
477                         {
478                         BIO_printf(bio_err, "Error setting digest %s\n", pname);
479                         ERR_print_errors(bio_err);
480                         goto end;
481                         }
482                 }
483
484         if(sigfile && sigkey) {
485                 BIO *sigbio;
486                 sigbio = BIO_new_file(sigfile, "rb");
487                 siglen = EVP_PKEY_size(sigkey);
488                 sigbuf = OPENSSL_malloc(siglen);
489                 if(!sigbio) {
490                         BIO_printf(bio_err, "Error opening signature file %s\n",
491                                                                 sigfile);
492                         ERR_print_errors(bio_err);
493                         goto end;
494                 }
495                 siglen = BIO_read(sigbio, sigbuf, siglen);
496                 BIO_free(sigbio);
497                 if(siglen <= 0) {
498                         BIO_printf(bio_err, "Error reading signature file %s\n",
499                                                                 sigfile);
500                         ERR_print_errors(bio_err);
501                         goto end;
502                 }
503         }
504         inp=BIO_push(bmd,in);
505
506         if (md == NULL)
507                 {
508                 EVP_MD_CTX *tctx;
509                 BIO_get_md_ctx(bmd, &tctx);
510                 md = EVP_MD_CTX_md(tctx);
511                 }
512
513         if (argc == 0)
514                 {
515                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
516                 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
517                           siglen,NULL,NULL,"stdin",bmd);
518                 }
519         else
520                 {
521                 const char *md_name = NULL, *sig_name = NULL;
522                 if(!out_bin)
523                         {
524                         if (sigkey)
525                                 {
526                                 const EVP_PKEY_ASN1_METHOD *ameth;
527                                 ameth = EVP_PKEY_get0_asn1(sigkey);
528                                 if (ameth)
529                                         EVP_PKEY_asn1_get0_info(NULL, NULL,
530                                                 NULL, NULL, &sig_name, ameth);
531                                 }
532                         md_name = EVP_MD_name(md);
533                         }
534                 err = 0;
535                 for (i=0; i<argc; i++)
536                         {
537                         int r;
538                         if (BIO_read_filename(in,argv[i]) <= 0)
539                                 {
540                                 perror(argv[i]);
541                                 err++;
542                                 continue;
543                                 }
544                         else
545                         r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
546                                 siglen,sig_name,md_name, argv[i],bmd);
547                         if(r)
548                             err=r;
549                         (void)BIO_reset(bmd);
550                         }
551                 }
552 end:
553         if (buf != NULL)
554                 {
555                 OPENSSL_cleanse(buf,BUFSIZE);
556                 OPENSSL_free(buf);
557                 }
558         if (in != NULL) BIO_free(in);
559         if (passin)
560                 OPENSSL_free(passin);
561         BIO_free_all(out);
562         EVP_PKEY_free(sigkey);
563         if (sigopts)
564                 sk_OPENSSL_STRING_free(sigopts);
565         if (macopts)
566                 sk_OPENSSL_STRING_free(macopts);
567         if(sigbuf) OPENSSL_free(sigbuf);
568         if (bmd != NULL) BIO_free(bmd);
569         apps_shutdown();
570         OPENSSL_EXIT(err);
571         }
572
573 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
574           EVP_PKEY *key, unsigned char *sigin, int siglen,
575           const char *sig_name, const char *md_name,
576           const char *file,BIO *bmd)
577         {
578         size_t len;
579         int i;
580
581         for (;;)
582                 {
583                 i=BIO_read(bp,(char *)buf,BUFSIZE);
584                 if(i < 0)
585                         {
586                         BIO_printf(bio_err, "Read Error in %s\n",file);
587                         ERR_print_errors(bio_err);
588                         return 1;
589                         }
590                 if (i == 0) break;
591                 }
592         if(sigin)
593                 {
594                 EVP_MD_CTX *ctx;
595                 BIO_get_md_ctx(bp, &ctx);
596                 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen); 
597                 if(i > 0)
598                         BIO_printf(out, "Verified OK\n");
599                 else if(i == 0)
600                         {
601                         BIO_printf(out, "Verification Failure\n");
602                         return 1;
603                         }
604                 else
605                         {
606                         BIO_printf(bio_err, "Error Verifying Data\n");
607                         ERR_print_errors(bio_err);
608                         return 1;
609                         }
610                 return 0;
611                 }
612         if(key)
613                 {
614                 EVP_MD_CTX *ctx;
615                 BIO_get_md_ctx(bp, &ctx);
616                 len = BUFSIZE;
617                 if(!EVP_DigestSignFinal(ctx, buf, &len)) 
618                         {
619                         BIO_printf(bio_err, "Error Signing Data\n");
620                         ERR_print_errors(bio_err);
621                         return 1;
622                         }
623                 }
624         else
625                 {
626                 len=BIO_gets(bp,(char *)buf,BUFSIZE);
627                 if ((int)len <0)
628                         {
629                         ERR_print_errors(bio_err);
630                         return 1;
631                         }
632                 }
633
634         if(binout) BIO_write(out, buf, len);
635         else if (sep == 2)
636                 {
637                 for (i=0; i<(int)len; i++)
638                         BIO_printf(out, "%02x",buf[i]);
639                 BIO_printf(out, " *%s\n", file);
640                 }
641         else 
642                 {
643                 if (sig_name)
644                         BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
645                 else if (md_name)
646                         BIO_printf(out, "%s(%s)= ", md_name, file);
647                 else
648                         BIO_printf(out, "(%s)= ", file);
649                 for (i=0; i<(int)len; i++)
650                         {
651                         if (sep && (i != 0))
652                                 BIO_printf(out, ":");
653                         BIO_printf(out, "%02x",buf[i]);
654                         }
655                 BIO_printf(out, "\n");
656                 }
657         return 0;
658         }
659