1 /* $OpenBSD: dgst.c,v 1.19 2022/01/14 09:28:07 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/evp.h>
68 #include <openssl/hmac.h>
69 #include <openssl/objects.h>
70 #include <openssl/pem.h>
71 #include <openssl/x509.h>
73 #define BUFSIZE 1024*8
76 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
77 EVP_PKEY * key, unsigned char *sigin, int siglen,
78 const char *sig_name, const char *md_name,
79 const char *file, BIO * bmd);
90 STACK_OF(OPENSSL_STRING) *macopts;
97 STACK_OF(OPENSSL_STRING) *sigopts;
102 dgst_opt_macopt(char *arg)
107 if (dgst_config.macopts == NULL &&
108 (dgst_config.macopts = sk_OPENSSL_STRING_new_null()) == NULL)
111 if (!sk_OPENSSL_STRING_push(dgst_config.macopts, arg))
118 dgst_opt_md(int argc, char **argv, int *argsused)
120 char *name = argv[0];
125 if ((dgst_config.m = EVP_get_digestbyname(name)) == NULL)
128 dgst_config.md = dgst_config.m;
135 dgst_opt_prverify(char *arg)
140 dgst_config.keyfile = arg;
141 dgst_config.do_verify = 1;
146 dgst_opt_sigopt(char *arg)
151 if (dgst_config.sigopts == NULL &&
152 (dgst_config.sigopts = sk_OPENSSL_STRING_new_null()) == NULL)
155 if (!sk_OPENSSL_STRING_push(dgst_config.sigopts, arg))
162 dgst_opt_verify(char *arg)
167 dgst_config.keyfile = arg;
168 dgst_config.want_pub = 1;
169 dgst_config.do_verify = 1;
173 static const struct option dgst_options[] = {
176 .desc = "Output the digest or signature in binary form",
177 .type = OPTION_VALUE,
178 .opt.value = &dgst_config.out_bin,
183 .desc = "Print the digest in two-digit groups separated by colons",
184 .type = OPTION_VALUE,
185 .opt.value = &dgst_config.separator,
190 .desc = "Print BIO debugging information",
192 .opt.flag = &dgst_config.debug,
196 .desc = "Output as hex dump",
197 .type = OPTION_VALUE,
198 .opt.value = &dgst_config.out_bin,
204 .desc = "Create hashed MAC with key",
206 .opt.arg = &dgst_config.hmac_key,
211 .desc = "Key file format (PEM)",
212 .type = OPTION_ARG_FORMAT,
213 .opt.value = &dgst_config.keyform,
217 .argname = "algorithm",
218 .desc = "Create MAC (not necessarily HMAC)",
220 .opt.arg = &dgst_config.mac_name,
225 .desc = "MAC algorithm parameters or key",
226 .type = OPTION_ARG_FUNC,
227 .opt.argfunc = dgst_opt_macopt,
232 .desc = "Output to file rather than stdout",
234 .opt.arg = &dgst_config.outfile,
239 .desc = "Input file passphrase source",
241 .opt.arg = &dgst_config.passargin,
246 .desc = "Verify a signature using private key in file",
247 .type = OPTION_ARG_FUNC,
248 .opt.argfunc = dgst_opt_prverify,
252 .desc = "Output the digest in coreutils format",
253 .type = OPTION_VALUE,
254 .opt.value = &dgst_config.separator,
260 .desc = "Sign digest using private key in file",
262 .opt.arg = &dgst_config.keyfile,
267 .desc = "Signature to verify",
269 .opt.arg = &dgst_config.sigfile,
274 .desc = "Signature parameter",
275 .type = OPTION_ARG_FUNC,
276 .opt.argfunc = dgst_opt_sigopt,
281 .desc = "Verify a signature using public key in file",
282 .type = OPTION_ARG_FUNC,
283 .opt.argfunc = dgst_opt_verify,
288 .type = OPTION_ARGV_FUNC,
289 .opt.argvfunc = dgst_opt_md,
295 list_md_fn(const EVP_MD * m, const char *from, const char *to, void *arg)
301 mname = OBJ_nid2ln(EVP_MD_type(m));
302 /* Skip shortnames */
303 if (strcmp(from, mname))
305 if (strchr(mname, ' '))
306 mname = EVP_MD_name(m);
307 BIO_printf(arg, " -%-17s To use the %s message digest algorithm\n",
314 fprintf(stderr, "usage: dgst [-cdr] [-binary] [-digest] [-hex]");
315 fprintf(stderr, " [-hmac key] [-keyform fmt]\n");
316 fprintf(stderr, " [-mac algorithm] [-macopt nm:v] [-out file]");
317 fprintf(stderr, " [-passin arg]\n");
318 fprintf(stderr, " [-prverify file] [-sign file]");
319 fprintf(stderr, " [-signature file]\n");
320 fprintf(stderr, " [-sigopt nm:v] [-verify file] [file ...]\n\n");
321 options_usage(dgst_options);
322 EVP_MD_do_all_sorted(list_md_fn, bio_err);
323 fprintf(stderr, "\n");
327 dgst_main(int argc, char **argv)
329 unsigned char *buf = NULL;
331 BIO *in = NULL, *inp;
334 #define PROG_NAME_SIZE 39
335 char pname[PROG_NAME_SIZE + 1];
336 EVP_PKEY *sigkey = NULL;
337 unsigned char *sigbuf = NULL;
341 if (single_execution) {
342 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
348 if ((buf = malloc(BUFSIZE)) == NULL) {
349 BIO_printf(bio_err, "out of memory\n");
353 memset(&dgst_config, 0, sizeof(dgst_config));
354 dgst_config.keyform = FORMAT_PEM;
355 dgst_config.out_bin = -1;
357 /* first check the program name */
358 program_name(argv[0], pname, sizeof pname);
360 dgst_config.md = EVP_get_digestbyname(pname);
362 if (options_parse(argc, argv, dgst_options, NULL,
363 &dgst_config.argsused) != 0) {
367 argc -= dgst_config.argsused;
368 argv += dgst_config.argsused;
370 if (dgst_config.do_verify && !dgst_config.sigfile) {
372 "No signature to verify: use the -signature option\n");
376 in = BIO_new(BIO_s_file());
377 bmd = BIO_new(BIO_f_md());
378 if (in == NULL || bmd == NULL) {
379 ERR_print_errors(bio_err);
383 if (dgst_config.debug) {
384 BIO_set_callback(in, BIO_debug_callback);
385 /* needed for windows 3.1 */
386 BIO_set_callback_arg(in, (char *) bio_err);
388 if (!app_passwd(bio_err, dgst_config.passargin, NULL, &passin, NULL)) {
389 BIO_printf(bio_err, "Error getting password\n");
392 if (dgst_config.out_bin == -1) {
393 if (dgst_config.keyfile)
394 dgst_config.out_bin = 1;
396 dgst_config.out_bin = 0;
399 if (dgst_config.outfile) {
400 if (dgst_config.out_bin)
401 out = BIO_new_file(dgst_config.outfile, "wb");
403 out = BIO_new_file(dgst_config.outfile, "w");
405 out = BIO_new_fp(stdout, BIO_NOCLOSE);
409 BIO_printf(bio_err, "Error opening output file %s\n",
410 dgst_config.outfile ? dgst_config.outfile : "(stdout)");
411 ERR_print_errors(bio_err);
414 if ((!!dgst_config.mac_name + !!dgst_config.keyfile +
415 !!dgst_config.hmac_key) > 1) {
417 "MAC and Signing key cannot both be specified\n");
420 if (dgst_config.keyfile) {
421 if (dgst_config.want_pub)
422 sigkey = load_pubkey(bio_err, dgst_config.keyfile,
423 dgst_config.keyform, 0, NULL, "key file");
425 sigkey = load_key(bio_err, dgst_config.keyfile,
426 dgst_config.keyform, 0, passin, "key file");
429 * load_[pub]key() has already printed an appropriate
435 if (dgst_config.mac_name) {
436 EVP_PKEY_CTX *mac_ctx = NULL;
438 if (!init_gen_str(bio_err, &mac_ctx, dgst_config.mac_name, 0))
440 if (dgst_config.macopts) {
442 for (i = 0; i < sk_OPENSSL_STRING_num(
443 dgst_config.macopts); i++) {
444 macopt = sk_OPENSSL_STRING_value(
445 dgst_config.macopts, i);
446 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
448 "MAC parameter error \"%s\"\n",
450 ERR_print_errors(bio_err);
455 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
456 BIO_puts(bio_err, "Error generating key\n");
457 ERR_print_errors(bio_err);
462 EVP_PKEY_CTX_free(mac_ctx);
466 if (dgst_config.hmac_key) {
467 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
468 (unsigned char *) dgst_config.hmac_key, -1);
473 EVP_MD_CTX *mctx = NULL;
474 EVP_PKEY_CTX *pctx = NULL;
476 if (!BIO_get_md_ctx(bmd, &mctx)) {
477 BIO_printf(bio_err, "Error getting context\n");
478 ERR_print_errors(bio_err);
481 if (dgst_config.do_verify)
482 r = EVP_DigestVerifyInit(mctx, &pctx, dgst_config.md,
485 r = EVP_DigestSignInit(mctx, &pctx, dgst_config.md,
488 BIO_printf(bio_err, "Error setting context\n");
489 ERR_print_errors(bio_err);
492 if (dgst_config.sigopts) {
494 for (i = 0; i < sk_OPENSSL_STRING_num(
495 dgst_config.sigopts); i++) {
496 sigopt = sk_OPENSSL_STRING_value(
497 dgst_config.sigopts, i);
498 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
500 "parameter error \"%s\"\n",
502 ERR_print_errors(bio_err);
508 /* we use md as a filter, reading from 'in' */
510 if (dgst_config.md == NULL)
511 dgst_config.md = EVP_sha256();
512 if (!BIO_set_md(bmd, dgst_config.md)) {
513 BIO_printf(bio_err, "Error setting digest %s\n", pname);
514 ERR_print_errors(bio_err);
519 if (dgst_config.sigfile && sigkey) {
521 siglen = EVP_PKEY_size(sigkey);
522 sigbuf = malloc(siglen);
523 if (sigbuf == NULL) {
524 BIO_printf(bio_err, "out of memory\n");
525 ERR_print_errors(bio_err);
528 sigbio = BIO_new_file(dgst_config.sigfile, "rb");
530 BIO_printf(bio_err, "Error opening signature file %s\n",
531 dgst_config.sigfile);
532 ERR_print_errors(bio_err);
535 siglen = BIO_read(sigbio, sigbuf, siglen);
538 BIO_printf(bio_err, "Error reading signature file %s\n",
539 dgst_config.sigfile);
540 ERR_print_errors(bio_err);
544 inp = BIO_push(bmd, in);
546 if (dgst_config.md == NULL) {
548 BIO_get_md_ctx(bmd, &tctx);
549 dgst_config.md = EVP_MD_CTX_md(tctx);
552 BIO_set_fp(in, stdin, BIO_NOCLOSE);
553 err = do_fp(out, buf, inp, dgst_config.separator,
554 dgst_config.out_bin, sigkey, sigbuf, siglen, NULL, NULL,
557 const char *md_name = NULL, *sig_name = NULL;
558 if (!dgst_config.out_bin) {
560 const EVP_PKEY_ASN1_METHOD *ameth;
561 ameth = EVP_PKEY_get0_asn1(sigkey);
563 EVP_PKEY_asn1_get0_info(NULL, NULL,
564 NULL, NULL, &sig_name, ameth);
566 md_name = EVP_MD_name(dgst_config.md);
569 for (i = 0; i < argc; i++) {
571 if (BIO_read_filename(in, argv[i]) <= 0) {
576 r = do_fp(out, buf, inp, dgst_config.separator,
577 dgst_config.out_bin, sigkey, sigbuf, siglen,
578 sig_name, md_name, argv[i], bmd);
582 (void) BIO_reset(bmd);
587 freezero(buf, BUFSIZE);
591 EVP_PKEY_free(sigkey);
592 sk_OPENSSL_STRING_free(dgst_config.sigopts);
593 sk_OPENSSL_STRING_free(dgst_config.macopts);
601 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
602 EVP_PKEY * key, unsigned char *sigin, int siglen,
603 const char *sig_name, const char *md_name,
604 const char *file, BIO * bmd)
610 i = BIO_read(bp, (char *) buf, BUFSIZE);
612 BIO_printf(bio_err, "Read Error in %s\n", file);
613 ERR_print_errors(bio_err);
621 BIO_get_md_ctx(bp, &ctx);
622 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
624 BIO_printf(out, "Verified OK\n");
626 BIO_printf(out, "Verification Failure\n");
629 BIO_printf(bio_err, "Error Verifying Data\n");
630 ERR_print_errors(bio_err);
637 BIO_get_md_ctx(bp, &ctx);
639 if (!EVP_DigestSignFinal(ctx, buf, &len)) {
640 BIO_printf(bio_err, "Error Signing Data\n");
641 ERR_print_errors(bio_err);
645 len = BIO_gets(bp, (char *) buf, BUFSIZE);
647 ERR_print_errors(bio_err);
653 BIO_write(out, buf, len);
655 for (i = 0; i < (int) len; i++)
656 BIO_printf(out, "%02x", buf[i]);
657 BIO_printf(out, " *%s\n", file);
660 BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
662 BIO_printf(out, "%s(%s)= ", md_name, file);
664 BIO_printf(out, "(%s)= ", file);
665 for (i = 0; i < (int) len; i++) {
667 BIO_printf(out, ":");
668 BIO_printf(out, "%02x", buf[i]);
670 BIO_printf(out, "\n");