dgst.c@ 100908

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1	/*
2	* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3	*
4	* Licensed under the Apache License 2.0 (the "License"). You may not use
5	* this file except in compliance with the License. You can obtain a copy
6	* in the file LICENSE in the source distribution or at
7	* https://www.openssl.org/source/license.html
8	*/
9
10	#include <stdio.h>
11	#include <string.h>
12	#include <stdlib.h>
13	#include "apps.h"
14	#include "progs.h"
15	#include <openssl/bio.h>
16	#include <openssl/err.h>
17	#include <openssl/evp.h>
18	#include <openssl/objects.h>
19	#include <openssl/x509.h>
20	#include <openssl/pem.h>
21	#include <openssl/hmac.h>
22	#include <ctype.h>
23
24	#undef BUFSIZE
25	#define BUFSIZE 1024*8
26
27	int do_fp(BIO out, unsigned char buf, BIO *bp, int sep, int binout, int xoflen,
28	EVP_PKEY key, unsigned char sigin, int siglen,
29	const char sig_name, const char md_name,
30	const char *file);
31	static void show_digests(const OBJ_NAME name, void bio_);
32
33	struct doall_dgst_digests {
34	BIO *bio;
35	int n;
36	};
37
38	typedef enum OPTION_choice {
39	OPT_COMMON,
40	OPT_LIST,
41	OPT_C, OPT_R, OPT_OUT, OPT_SIGN, OPT_PASSIN, OPT_VERIFY,
42	OPT_PRVERIFY, OPT_SIGNATURE, OPT_KEYFORM, OPT_ENGINE, OPT_ENGINE_IMPL,
43	OPT_HEX, OPT_BINARY, OPT_DEBUG, OPT_FIPS_FINGERPRINT,
44	OPT_HMAC, OPT_MAC, OPT_SIGOPT, OPT_MACOPT, OPT_XOFLEN,
45	OPT_DIGEST,
46	OPT_R_ENUM, OPT_PROV_ENUM
47	} OPTION_CHOICE;
48
49	const OPTIONS dgst_options[] = {
50	{OPT_HELP_STR, 1, '-', "Usage: %s [options] [file...]\n"},
51
52	OPT_SECTION("General"),
53	{"help", OPT_HELP, '-', "Display this summary"},
54	{"list", OPT_LIST, '-', "List digests"},
55	#ifndef OPENSSL_NO_ENGINE
56	{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
57	{"engine_impl", OPT_ENGINE_IMPL, '-',
58	"Also use engine given by -engine for digest operations"},
59	#endif
60	{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
61
62	OPT_SECTION("Output"),
63	{"c", OPT_C, '-', "Print the digest with separating colons"},
64	{"r", OPT_R, '-', "Print the digest in coreutils format"},
65	{"out", OPT_OUT, '>', "Output to filename rather than stdout"},
66	{"keyform", OPT_KEYFORM, 'f', "Key file format (ENGINE, other values ignored)"},
67	{"hex", OPT_HEX, '-', "Print as hex dump"},
68	{"binary", OPT_BINARY, '-', "Print in binary form"},
69	{"xoflen", OPT_XOFLEN, 'p', "Output length for XOF algorithms. To obtain the maximum security strength set this to 32 (or greater) for SHAKE128, and 64 (or greater) for SHAKE256"},
70	{"d", OPT_DEBUG, '-', "Print debug info"},
71	{"debug", OPT_DEBUG, '-', "Print debug info"},
72
73	OPT_SECTION("Signing"),
74	{"sign", OPT_SIGN, 's', "Sign digest using private key"},
75	{"verify", OPT_VERIFY, 's', "Verify a signature using public key"},
76	{"prverify", OPT_PRVERIFY, 's', "Verify a signature using private key"},
77	{"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
78	{"signature", OPT_SIGNATURE, '<', "File with signature to verify"},
79	{"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
80	{"mac", OPT_MAC, 's', "Create MAC (not necessarily HMAC)"},
81	{"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
82	{"", OPT_DIGEST, '-', "Any supported digest"},
83	{"fips-fingerprint", OPT_FIPS_FINGERPRINT, '-',
84	"Compute HMAC with the key used in OpenSSL-FIPS fingerprint"},
85
86	OPT_R_OPTIONS,
87	OPT_PROV_OPTIONS,
88
89	OPT_PARAMETERS(),
90	{"file", 0, 0, "Files to digest (optional; default is stdin)"},
91	{NULL}
92	};
93
94	int dgst_main(int argc, char **argv)
95	{
96	BIO in = NULL, inp, bmd = NULL, out = NULL;
97	ENGINE e = NULL, impl = NULL;
98	EVP_PKEY *sigkey = NULL;
99	STACK_OF(OPENSSL_STRING) sigopts = NULL, macopts = NULL;
100	char *hmac_key = NULL;
101	char mac_name = NULL, digestname = NULL;
102	char passinarg = NULL, passin = NULL;
103	EVP_MD *md = NULL;
104	const char outfile = NULL, keyfile = NULL, *prog = NULL;
105	const char *sigfile = NULL;
106	const char *md_name = NULL;
107	OPTION_CHOICE o;
108	int separator = 0, debug = 0, keyform = FORMAT_UNDEF, siglen = 0;
109	int i, ret = EXIT_FAILURE, out_bin = -1, want_pub = 0, do_verify = 0;
110	int xoflen = 0;
111	unsigned char buf = NULL, sigbuf = NULL;
112	int engine_impl = 0;
113	struct doall_dgst_digests dec;
114
115	buf = app_malloc(BUFSIZE, "I/O buffer");
116	md = (EVP_MD *)EVP_get_digestbyname(argv[0]);
117
118	prog = opt_init(argc, argv, dgst_options);
119	while ((o = opt_next()) != OPT_EOF) {
120	switch (o) {
121	case OPT_EOF:
122	case OPT_ERR:
123	opthelp:
124	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
125	goto end;
126	case OPT_HELP:
127	opt_help(dgst_options);
128	ret = EXIT_SUCCESS;
129	goto end;
130	case OPT_LIST:
131	BIO_printf(bio_out, "Supported digests:\n");
132	dec.bio = bio_out;
133	dec.n = 0;
134	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH,
135	show_digests, &dec);
136	BIO_printf(bio_out, "\n");
137	ret = EXIT_SUCCESS;
138	goto end;
139	case OPT_C:
140	separator = 1;
141	break;
142	case OPT_R:
143	separator = 2;
144	break;
145	case OPT_R_CASES:
146	if (!opt_rand(o))
147	goto end;
148	break;
149	case OPT_OUT:
150	outfile = opt_arg();
151	break;
152	case OPT_SIGN:
153	keyfile = opt_arg();
154	break;
155	case OPT_PASSIN:
156	passinarg = opt_arg();
157	break;
158	case OPT_VERIFY:
159	keyfile = opt_arg();
160	want_pub = do_verify = 1;
161	break;
162	case OPT_PRVERIFY:
163	keyfile = opt_arg();
164	do_verify = 1;
165	break;
166	case OPT_SIGNATURE:
167	sigfile = opt_arg();
168	break;
169	case OPT_KEYFORM:
170	if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
171	goto opthelp;
172	break;
173	case OPT_ENGINE:
174	e = setup_engine(opt_arg(), 0);
175	break;
176	case OPT_ENGINE_IMPL:
177	engine_impl = 1;
178	break;
179	case OPT_HEX:
180	out_bin = 0;
181	break;
182	case OPT_BINARY:
183	out_bin = 1;
184	break;
185	case OPT_XOFLEN:
186	xoflen = atoi(opt_arg());
187	break;
188	case OPT_DEBUG:
189	debug = 1;
190	break;
191	case OPT_FIPS_FINGERPRINT:
192	hmac_key = "etaonrishdlcupfm";
193	break;
194	case OPT_HMAC:
195	hmac_key = opt_arg();
196	break;
197	case OPT_MAC:
198	mac_name = opt_arg();
199	break;
200	case OPT_SIGOPT:
201	if (!sigopts)
202	sigopts = sk_OPENSSL_STRING_new_null();
203	if (!sigopts \|\| !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
204	goto opthelp;
205	break;
206	case OPT_MACOPT:
207	if (!macopts)
208	macopts = sk_OPENSSL_STRING_new_null();
209	if (!macopts \|\| !sk_OPENSSL_STRING_push(macopts, opt_arg()))
210	goto opthelp;
211	break;
212	case OPT_DIGEST:
213	digestname = opt_unknown();
214	break;
215	case OPT_PROV_CASES:
216	if (!opt_provider(o))
217	goto end;
218	break;
219	}
220	}
221
222	/* Remaining args are files to digest. */
223	argc = opt_num_rest();
224	argv = opt_rest();
225	if (keyfile != NULL && argc > 1) {
226	BIO_printf(bio_err, "%s: Can only sign or verify one file.\n", prog);
227	goto end;
228	}
229	if (!app_RAND_load())
230	goto end;
231
232	if (digestname != NULL) {
233	if (!opt_md(digestname, &md))
234	goto opthelp;
235	}
236
237	if (do_verify && sigfile == NULL) {
238	BIO_printf(bio_err,
239	"No signature to verify: use the -signature option\n");
240	goto end;
241	}
242	if (engine_impl)
243	impl = e;
244
245	in = BIO_new(BIO_s_file());
246	bmd = BIO_new(BIO_f_md());
247	if (in == NULL \|\| bmd == NULL)
248	goto end;
249
250	if (debug) {
251	BIO_set_callback_ex(in, BIO_debug_callback_ex);
252	/* needed for windows 3.1 */
253	BIO_set_callback_arg(in, (char *)bio_err);
254	}
255
256	if (!app_passwd(passinarg, NULL, &passin, NULL)) {
257	BIO_printf(bio_err, "Error getting password\n");
258	goto end;
259	}
260
261	if (out_bin == -1) {
262	if (keyfile != NULL)
263	out_bin = 1;
264	else
265	out_bin = 0;
266	}
267
268	out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
269	if (out == NULL)
270	goto end;
271
272	if ((!(mac_name == NULL) + !(keyfile == NULL) + !(hmac_key == NULL)) > 1) {
273	BIO_printf(bio_err, "MAC and signing key cannot both be specified\n");
274	goto end;
275	}
276
277	if (keyfile != NULL) {
278	int type;
279
280	if (want_pub)
281	sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
282	else
283	sigkey = load_key(keyfile, keyform, 0, passin, e, "private key");
284	if (sigkey == NULL) {
285	/*
286	* load_[pub]key() has already printed an appropriate message
287	*/
288	goto end;
289	}
290	type = EVP_PKEY_get_id(sigkey);
291	if (type == EVP_PKEY_ED25519 \|\| type == EVP_PKEY_ED448) {
292	/*
293	* We implement PureEdDSA for these which doesn't have a separate
294	* digest, and only supports one shot.
295	*/
296	BIO_printf(bio_err, "Key type not supported for this operation\n");
297	goto end;
298	}
299	}
300
301	if (mac_name != NULL) {
302	EVP_PKEY_CTX *mac_ctx = NULL;
303
304	if (!init_gen_str(&mac_ctx, mac_name, impl, 0, NULL, NULL))
305	goto end;
306	if (macopts != NULL) {
307	for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
308	char *macopt = sk_OPENSSL_STRING_value(macopts, i);
309
310	if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
311	EVP_PKEY_CTX_free(mac_ctx);
312	BIO_printf(bio_err, "MAC parameter error \"%s\"\n", macopt);
313	goto end;
314	}
315	}
316	}
317
318	sigkey = app_keygen(mac_ctx, mac_name, 0, 0 /* not verbose */);
319	/* Verbose output would make external-tests gost-engine fail */
320	EVP_PKEY_CTX_free(mac_ctx);
321	}
322
323	if (hmac_key != NULL) {
324	if (md == NULL) {
325	md = (EVP_MD *)EVP_sha256();
326	digestname = SN_sha256;
327	}
328	sigkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, impl,
329	(unsigned char *)hmac_key,
330	strlen(hmac_key));
331	if (sigkey == NULL)
332	goto end;
333	}
334
335	if (sigkey != NULL) {
336	EVP_MD_CTX *mctx = NULL;
337	EVP_PKEY_CTX *pctx = NULL;
338	int res;
339
340	if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
341	BIO_printf(bio_err, "Error getting context\n");
342	goto end;
343	}
344	if (do_verify)
345	if (impl == NULL)
346	res = EVP_DigestVerifyInit_ex(mctx, &pctx, digestname,
347	app_get0_libctx(),
348	app_get0_propq(), sigkey, NULL);
349	else
350	res = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
351	else
352	if (impl == NULL)
353	res = EVP_DigestSignInit_ex(mctx, &pctx, digestname,
354	app_get0_libctx(),
355	app_get0_propq(), sigkey, NULL);
356	else
357	res = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
358	if (res == 0) {
359	BIO_printf(bio_err, "Error setting context\n");
360	goto end;
361	}
362	if (sigopts != NULL) {
363	for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
364	char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
365
366	if (pkey_ctrl_string(pctx, sigopt) <= 0) {
367	BIO_printf(bio_err, "Signature parameter error \"%s\"\n",
368	sigopt);
369	goto end;
370	}
371	}
372	}
373	}
374	/* we use md as a filter, reading from 'in' */
375	else {
376	EVP_MD_CTX *mctx = NULL;
377	if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
378	BIO_printf(bio_err, "Error getting context\n");
379	goto end;
380	}
381	if (md == NULL)
382	md = (EVP_MD *)EVP_sha256();
383	if (!EVP_DigestInit_ex(mctx, md, impl)) {
384	BIO_printf(bio_err, "Error setting digest\n");
385	goto end;
386	}
387	}
388
389	if (sigfile != NULL && sigkey != NULL) {
390	BIO *sigbio = BIO_new_file(sigfile, "rb");
391
392	if (sigbio == NULL) {
393	BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
394	goto end;
395	}
396	siglen = EVP_PKEY_get_size(sigkey);
397	sigbuf = app_malloc(siglen, "signature buffer");
398	siglen = BIO_read(sigbio, sigbuf, siglen);
399	BIO_free(sigbio);
400	if (siglen <= 0) {
401	BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
402	goto end;
403	}
404	}
405	inp = BIO_push(bmd, in);
406
407	if (md == NULL) {
408	EVP_MD_CTX *tctx;
409
410	BIO_get_md_ctx(bmd, &tctx);
411	md = EVP_MD_CTX_get1_md(tctx);
412	}
413	if (md != NULL)
414	md_name = EVP_MD_get0_name(md);
415
416	if (xoflen > 0) {
417	if (!(EVP_MD_get_flags(md) & EVP_MD_FLAG_XOF)) {
418	BIO_printf(bio_err, "Length can only be specified for XOF\n");
419	goto end;
420	}
421	/*
422	* Signing using XOF is not supported by any algorithms currently since
423	* each algorithm only calls EVP_DigestFinal_ex() in their sign_final
424	* and verify_final methods.
425	*/
426	if (sigkey != NULL) {
427	BIO_printf(bio_err, "Signing key cannot be specified for XOF\n");
428	goto end;
429	}
430	}
431
432	if (argc == 0) {
433	BIO_set_fp(in, stdin, BIO_NOCLOSE);
434	ret = do_fp(out, buf, inp, separator, out_bin, xoflen, sigkey, sigbuf,
435	siglen, NULL, md_name, "stdin");
436	} else {
437	const char *sig_name = NULL;
438
439	if (out_bin == 0) {
440	if (sigkey != NULL)
441	sig_name = EVP_PKEY_get0_type_name(sigkey);
442	}
443	ret = EXIT_SUCCESS;
444	for (i = 0; i < argc; i++) {
445	if (BIO_read_filename(in, argv[i]) <= 0) {
446	perror(argv[i]);
447	ret = EXIT_FAILURE;
448	continue;
449	} else {
450	if (do_fp(out, buf, inp, separator, out_bin, xoflen,
451	sigkey, sigbuf, siglen, sig_name, md_name, argv[i]))
452	ret = EXIT_FAILURE;
453	}
454	(void)BIO_reset(bmd);
455	}
456	}
457	end:
458	if (ret != EXIT_SUCCESS)
459	ERR_print_errors(bio_err);
460	OPENSSL_clear_free(buf, BUFSIZE);
461	BIO_free(in);
462	OPENSSL_free(passin);
463	BIO_free_all(out);
464	EVP_MD_free(md);
465	EVP_PKEY_free(sigkey);
466	sk_OPENSSL_STRING_free(sigopts);
467	sk_OPENSSL_STRING_free(macopts);
468	OPENSSL_free(sigbuf);
469	BIO_free(bmd);
470	release_engine(e);
471	return ret;
472	}
473
474	static void show_digests(const OBJ_NAME name, void arg)
475	{
476	struct doall_dgst_digests dec = (struct doall_dgst_digests )arg;
477	const EVP_MD *md = NULL;
478
479	/* Filter out signed digests (a.k.a signature algorithms) */
480	if (strstr(name->name, "rsa") != NULL \|\| strstr(name->name, "RSA") != NULL)
481	return;
482
483	if (!islower((unsigned char)*name->name))
484	return;
485
486	/* Filter out message digests that we cannot use */
487	md = EVP_MD_fetch(app_get0_libctx(), name->name, app_get0_propq());
488	if (md == NULL)
489	return;
490
491	BIO_printf(dec->bio, "-%-25s", name->name);
492	if (++dec->n == 3) {
493	BIO_printf(dec->bio, "\n");
494	dec->n = 0;
495	} else {
496	BIO_printf(dec->bio, " ");
497	}
498	}
499
500	/*
501	* The newline_escape_filename function performs newline escaping for any
502	* filename that contains a newline. This function also takes a pointer
503	* to backslash. The backslash pointer is a flag to indicating whether a newline
504	* is present in the filename. If a newline is present, the backslash flag is
505	* set and the output format will contain a backslash at the beginning of the
506	* digest output. This output format is to replicate the output format found
507	* in the '*sum' checksum programs. This aims to preserve backward
508	* compatibility.
509	*/
510	static const char newline_escape_filename(const char file, int * backslash)
511	{
512	size_t i, e = 0, length = strlen(file), newline_count = 0, mem_len = 0;
513	char *file_cpy = NULL;
514
515	for (i = 0; i < length; i++)
516	if (file[i] == '\n')
517	newline_count++;
518
519	mem_len = length + newline_count + 1;
520	file_cpy = app_malloc(mem_len, file);
521	i = 0;
522
523	while(e < length) {
524	const char c = file[e];
525	if (c == '\n') {
526	file_cpy[i++] = '\\';
527	file_cpy[i++] = 'n';
528	*backslash = 1;
529	} else {
530	file_cpy[i++] = c;
531	}
532	e++;
533	}
534	file_cpy[i] = '\0';
535	return (const char*)file_cpy;
536	}
537
538
539	int do_fp(BIO out, unsigned char buf, BIO *bp, int sep, int binout, int xoflen,
540	EVP_PKEY key, unsigned char sigin, int siglen,
541	const char sig_name, const char md_name,
542	const char *file)
543	{
544	size_t len = BUFSIZE;
545	int i, backslash = 0, ret = EXIT_FAILURE;
546	unsigned char *allocated_buf = NULL;
547
548	while (BIO_pending(bp) \|\| !BIO_eof(bp)) {
549	i = BIO_read(bp, (char *)buf, BUFSIZE);
550	if (i < 0) {
551	BIO_printf(bio_err, "Read error in %s\n", file);
552	goto end;
553	}
554	if (i == 0)
555	break;
556	}
557	if (sigin != NULL) {
558	EVP_MD_CTX *ctx;
559	BIO_get_md_ctx(bp, &ctx);
560	i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
561	if (i > 0) {
562	BIO_printf(out, "Verified OK\n");
563	} else if (i == 0) {
564	BIO_printf(out, "Verification failure\n");
565	goto end;
566	} else {
567	BIO_printf(bio_err, "Error verifying data\n");
568	goto end;
569	}
570	ret = EXIT_SUCCESS;
571	goto end;
572	}
573	if (key != NULL) {
574	EVP_MD_CTX *ctx;
575	size_t tmplen;
576
577	BIO_get_md_ctx(bp, &ctx);
578	if (!EVP_DigestSignFinal(ctx, NULL, &tmplen)) {
579	BIO_printf(bio_err, "Error getting maximum length of signed data\n");
580	goto end;
581	}
582	if (tmplen > BUFSIZE) {
583	len = tmplen;
584	allocated_buf = app_malloc(len, "Signature buffer");
585	buf = allocated_buf;
586	}
587	if (!EVP_DigestSignFinal(ctx, buf, &len)) {
588	BIO_printf(bio_err, "Error signing data\n");
589	goto end;
590	}
591	} else if (xoflen > 0) {
592	EVP_MD_CTX *ctx;
593
594	len = xoflen;
595	if (len > BUFSIZE) {
596	allocated_buf = app_malloc(len, "Digest buffer");
597	buf = allocated_buf;
598	}
599
600	BIO_get_md_ctx(bp, &ctx);
601
602	if (!EVP_DigestFinalXOF(ctx, buf, len)) {
603	BIO_printf(bio_err, "Error Digesting Data\n");
604	goto end;
605	}
606	} else {
607	len = BIO_gets(bp, (char *)buf, BUFSIZE);
608	if ((int)len < 0)
609	goto end;
610	}
611
612	if (binout) {
613	BIO_write(out, buf, len);
614	} else if (sep == 2) {
615	file = newline_escape_filename(file, &backslash);
616
617	if (backslash == 1)
618	BIO_puts(out, "\\");
619
620	for (i = 0; i < (int)len; i++)
621	BIO_printf(out, "%02x", buf[i]);
622
623	BIO_printf(out, " *%s\n", file);
624	OPENSSL_free((char *)file);
625	} else {
626	if (sig_name != NULL) {
627	BIO_puts(out, sig_name);
628	if (md_name != NULL)
629	BIO_printf(out, "-%s", md_name);
630	BIO_printf(out, "(%s)= ", file);
631	} else if (md_name != NULL) {
632	BIO_printf(out, "%s(%s)= ", md_name, file);
633	} else {
634	BIO_printf(out, "(%s)= ", file);
635	}
636	for (i = 0; i < (int)len; i++) {
637	if (sep && (i != 0))
638	BIO_printf(out, ":");
639	BIO_printf(out, "%02x", buf[i]);
640	}
641	BIO_printf(out, "\n");
642	}
643
644	ret = EXIT_SUCCESS;
645	end:
646	if (allocated_buf != NULL)
647	OPENSSL_clear_free(allocated_buf, len);
648
649	return ret;
650	}

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source: vbox/trunk/src/libs/openssl-3.0.7/apps/dgst.c@ 100908

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