dgst.c@ 100908

最後變更在這個檔案從100908是 99366,由 vboxsync 提交於 22 月前
openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
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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	if (md != NULL)
118	digestname = argv[0];
119
120	prog = opt_init(argc, argv, dgst_options);
121	while ((o = opt_next()) != OPT_EOF) {
122	switch (o) {
123	case OPT_EOF:
124	case OPT_ERR:
125	opthelp:
126	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
127	goto end;
128	case OPT_HELP:
129	opt_help(dgst_options);
130	ret = EXIT_SUCCESS;
131	goto end;
132	case OPT_LIST:
133	BIO_printf(bio_out, "Supported digests:\n");
134	dec.bio = bio_out;
135	dec.n = 0;
136	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH,
137	show_digests, &dec);
138	BIO_printf(bio_out, "\n");
139	ret = EXIT_SUCCESS;
140	goto end;
141	case OPT_C:
142	separator = 1;
143	break;
144	case OPT_R:
145	separator = 2;
146	break;
147	case OPT_R_CASES:
148	if (!opt_rand(o))
149	goto end;
150	break;
151	case OPT_OUT:
152	outfile = opt_arg();
153	break;
154	case OPT_SIGN:
155	keyfile = opt_arg();
156	break;
157	case OPT_PASSIN:
158	passinarg = opt_arg();
159	break;
160	case OPT_VERIFY:
161	keyfile = opt_arg();
162	want_pub = do_verify = 1;
163	break;
164	case OPT_PRVERIFY:
165	keyfile = opt_arg();
166	do_verify = 1;
167	break;
168	case OPT_SIGNATURE:
169	sigfile = opt_arg();
170	break;
171	case OPT_KEYFORM:
172	if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
173	goto opthelp;
174	break;
175	case OPT_ENGINE:
176	e = setup_engine(opt_arg(), 0);
177	break;
178	case OPT_ENGINE_IMPL:
179	engine_impl = 1;
180	break;
181	case OPT_HEX:
182	out_bin = 0;
183	break;
184	case OPT_BINARY:
185	out_bin = 1;
186	break;
187	case OPT_XOFLEN:
188	xoflen = atoi(opt_arg());
189	break;
190	case OPT_DEBUG:
191	debug = 1;
192	break;
193	case OPT_FIPS_FINGERPRINT:
194	hmac_key = "etaonrishdlcupfm";
195	break;
196	case OPT_HMAC:
197	hmac_key = opt_arg();
198	break;
199	case OPT_MAC:
200	mac_name = opt_arg();
201	break;
202	case OPT_SIGOPT:
203	if (!sigopts)
204	sigopts = sk_OPENSSL_STRING_new_null();
205	if (!sigopts \|\| !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
206	goto opthelp;
207	break;
208	case OPT_MACOPT:
209	if (!macopts)
210	macopts = sk_OPENSSL_STRING_new_null();
211	if (!macopts \|\| !sk_OPENSSL_STRING_push(macopts, opt_arg()))
212	goto opthelp;
213	break;
214	case OPT_DIGEST:
215	digestname = opt_unknown();
216	break;
217	case OPT_PROV_CASES:
218	if (!opt_provider(o))
219	goto end;
220	break;
221	}
222	}
223
224	/* Remaining args are files to digest. */
225	argc = opt_num_rest();
226	argv = opt_rest();
227	if (keyfile != NULL && argc > 1) {
228	BIO_printf(bio_err, "%s: Can only sign or verify one file.\n", prog);
229	goto end;
230	}
231	if (!app_RAND_load())
232	goto end;
233
234	if (digestname != NULL) {
235	if (!opt_md(digestname, &md))
236	goto opthelp;
237	}
238
239	if (do_verify && sigfile == NULL) {
240	BIO_printf(bio_err,
241	"No signature to verify: use the -signature option\n");
242	goto end;
243	}
244	if (engine_impl)
245	impl = e;
246
247	in = BIO_new(BIO_s_file());
248	bmd = BIO_new(BIO_f_md());
249	if (in == NULL \|\| bmd == NULL)
250	goto end;
251
252	if (debug) {
253	BIO_set_callback_ex(in, BIO_debug_callback_ex);
254	/* needed for windows 3.1 */
255	BIO_set_callback_arg(in, (char *)bio_err);
256	}
257
258	if (!app_passwd(passinarg, NULL, &passin, NULL)) {
259	BIO_printf(bio_err, "Error getting password\n");
260	goto end;
261	}
262
263	if (out_bin == -1) {
264	if (keyfile != NULL)
265	out_bin = 1;
266	else
267	out_bin = 0;
268	}
269
270	out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
271	if (out == NULL)
272	goto end;
273
274	if ((!(mac_name == NULL) + !(keyfile == NULL) + !(hmac_key == NULL)) > 1) {
275	BIO_printf(bio_err, "MAC and signing key cannot both be specified\n");
276	goto end;
277	}
278
279	if (keyfile != NULL) {
280	int type;
281
282	if (want_pub)
283	sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
284	else
285	sigkey = load_key(keyfile, keyform, 0, passin, e, "private key");
286	if (sigkey == NULL) {
287	/*
288	* load_[pub]key() has already printed an appropriate message
289	*/
290	goto end;
291	}
292	type = EVP_PKEY_get_id(sigkey);
293	if (type == EVP_PKEY_ED25519 \|\| type == EVP_PKEY_ED448) {
294	/*
295	* We implement PureEdDSA for these which doesn't have a separate
296	* digest, and only supports one shot.
297	*/
298	BIO_printf(bio_err, "Key type not supported for this operation\n");
299	goto end;
300	}
301	}
302
303	if (mac_name != NULL) {
304	EVP_PKEY_CTX *mac_ctx = NULL;
305
306	if (!init_gen_str(&mac_ctx, mac_name, impl, 0, NULL, NULL))
307	goto end;
308	if (macopts != NULL) {
309	for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
310	char *macopt = sk_OPENSSL_STRING_value(macopts, i);
311
312	if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
313	EVP_PKEY_CTX_free(mac_ctx);
314	BIO_printf(bio_err, "MAC parameter error \"%s\"\n", macopt);
315	goto end;
316	}
317	}
318	}
319
320	sigkey = app_keygen(mac_ctx, mac_name, 0, 0 /* not verbose */);
321	/* Verbose output would make external-tests gost-engine fail */
322	EVP_PKEY_CTX_free(mac_ctx);
323	}
324
325	if (hmac_key != NULL) {
326	if (md == NULL) {
327	md = (EVP_MD *)EVP_sha256();
328	digestname = SN_sha256;
329	}
330	sigkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, impl,
331	(unsigned char *)hmac_key,
332	strlen(hmac_key));
333	if (sigkey == NULL)
334	goto end;
335	}
336
337	if (sigkey != NULL) {
338	EVP_MD_CTX *mctx = NULL;
339	EVP_PKEY_CTX *pctx = NULL;
340	int res;
341
342	if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
343	BIO_printf(bio_err, "Error getting context\n");
344	goto end;
345	}
346	if (do_verify)
347	if (impl == NULL)
348	res = EVP_DigestVerifyInit_ex(mctx, &pctx, digestname,
349	app_get0_libctx(),
350	app_get0_propq(), sigkey, NULL);
351	else
352	res = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
353	else
354	if (impl == NULL)
355	res = EVP_DigestSignInit_ex(mctx, &pctx, digestname,
356	app_get0_libctx(),
357	app_get0_propq(), sigkey, NULL);
358	else
359	res = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
360	if (res == 0) {
361	BIO_printf(bio_err, "Error setting context\n");
362	goto end;
363	}
364	if (sigopts != NULL) {
365	for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
366	char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
367
368	if (pkey_ctrl_string(pctx, sigopt) <= 0) {
369	BIO_printf(bio_err, "Signature parameter error \"%s\"\n",
370	sigopt);
371	goto end;
372	}
373	}
374	}
375	}
376	/* we use md as a filter, reading from 'in' */
377	else {
378	EVP_MD_CTX *mctx = NULL;
379	if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
380	BIO_printf(bio_err, "Error getting context\n");
381	goto end;
382	}
383	if (md == NULL)
384	md = (EVP_MD *)EVP_sha256();
385	if (!EVP_DigestInit_ex(mctx, md, impl)) {
386	BIO_printf(bio_err, "Error setting digest\n");
387	goto end;
388	}
389	}
390
391	if (sigfile != NULL && sigkey != NULL) {
392	BIO *sigbio = BIO_new_file(sigfile, "rb");
393
394	if (sigbio == NULL) {
395	BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
396	goto end;
397	}
398	siglen = EVP_PKEY_get_size(sigkey);
399	sigbuf = app_malloc(siglen, "signature buffer");
400	siglen = BIO_read(sigbio, sigbuf, siglen);
401	BIO_free(sigbio);
402	if (siglen <= 0) {
403	BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
404	goto end;
405	}
406	}
407	inp = BIO_push(bmd, in);
408
409	if (md == NULL) {
410	EVP_MD_CTX *tctx;
411
412	BIO_get_md_ctx(bmd, &tctx);
413	md = EVP_MD_CTX_get1_md(tctx);
414	}
415	if (md != NULL)
416	md_name = EVP_MD_get0_name(md);
417
418	if (xoflen > 0) {
419	if (!(EVP_MD_get_flags(md) & EVP_MD_FLAG_XOF)) {
420	BIO_printf(bio_err, "Length can only be specified for XOF\n");
421	goto end;
422	}
423	/*
424	* Signing using XOF is not supported by any algorithms currently since
425	* each algorithm only calls EVP_DigestFinal_ex() in their sign_final
426	* and verify_final methods.
427	*/
428	if (sigkey != NULL) {
429	BIO_printf(bio_err, "Signing key cannot be specified for XOF\n");
430	goto end;
431	}
432	}
433
434	if (argc == 0) {
435	BIO_set_fp(in, stdin, BIO_NOCLOSE);
436	ret = do_fp(out, buf, inp, separator, out_bin, xoflen, sigkey, sigbuf,
437	siglen, NULL, md_name, "stdin");
438	} else {
439	const char *sig_name = NULL;
440
441	if (out_bin == 0) {
442	if (sigkey != NULL)
443	sig_name = EVP_PKEY_get0_type_name(sigkey);
444	}
445	ret = EXIT_SUCCESS;
446	for (i = 0; i < argc; i++) {
447	if (BIO_read_filename(in, argv[i]) <= 0) {
448	perror(argv[i]);
449	ret = EXIT_FAILURE;
450	continue;
451	} else {
452	if (do_fp(out, buf, inp, separator, out_bin, xoflen,
453	sigkey, sigbuf, siglen, sig_name, md_name, argv[i]))
454	ret = EXIT_FAILURE;
455	}
456	(void)BIO_reset(bmd);
457	}
458	}
459	end:
460	if (ret != EXIT_SUCCESS)
461	ERR_print_errors(bio_err);
462	OPENSSL_clear_free(buf, BUFSIZE);
463	BIO_free(in);
464	OPENSSL_free(passin);
465	BIO_free_all(out);
466	EVP_MD_free(md);
467	EVP_PKEY_free(sigkey);
468	sk_OPENSSL_STRING_free(sigopts);
469	sk_OPENSSL_STRING_free(macopts);
470	OPENSSL_free(sigbuf);
471	BIO_free(bmd);
472	release_engine(e);
473	return ret;
474	}
475
476	static void show_digests(const OBJ_NAME name, void arg)
477	{
478	struct doall_dgst_digests dec = (struct doall_dgst_digests )arg;
479	const EVP_MD *md = NULL;
480
481	/* Filter out signed digests (a.k.a signature algorithms) */
482	if (strstr(name->name, "rsa") != NULL \|\| strstr(name->name, "RSA") != NULL)
483	return;
484
485	if (!islower((unsigned char)*name->name))
486	return;
487
488	/* Filter out message digests that we cannot use */
489	md = EVP_MD_fetch(app_get0_libctx(), name->name, app_get0_propq());
490	if (md == NULL)
491	return;
492
493	BIO_printf(dec->bio, "-%-25s", name->name);
494	if (++dec->n == 3) {
495	BIO_printf(dec->bio, "\n");
496	dec->n = 0;
497	} else {
498	BIO_printf(dec->bio, " ");
499	}
500	}
501
502	/*
503	* The newline_escape_filename function performs newline escaping for any
504	* filename that contains a newline. This function also takes a pointer
505	* to backslash. The backslash pointer is a flag to indicating whether a newline
506	* is present in the filename. If a newline is present, the backslash flag is
507	* set and the output format will contain a backslash at the beginning of the
508	* digest output. This output format is to replicate the output format found
509	* in the '*sum' checksum programs. This aims to preserve backward
510	* compatibility.
511	*/
512	static const char newline_escape_filename(const char file, int * backslash)
513	{
514	size_t i, e = 0, length = strlen(file), newline_count = 0, mem_len = 0;
515	char *file_cpy = NULL;
516
517	for (i = 0; i < length; i++)
518	if (file[i] == '\n')
519	newline_count++;
520
521	mem_len = length + newline_count + 1;
522	file_cpy = app_malloc(mem_len, file);
523	i = 0;
524
525	while(e < length) {
526	const char c = file[e];
527	if (c == '\n') {
528	file_cpy[i++] = '\\';
529	file_cpy[i++] = 'n';
530	*backslash = 1;
531	} else {
532	file_cpy[i++] = c;
533	}
534	e++;
535	}
536	file_cpy[i] = '\0';
537	return (const char*)file_cpy;
538	}
539
540
541	int do_fp(BIO out, unsigned char buf, BIO *bp, int sep, int binout, int xoflen,
542	EVP_PKEY key, unsigned char sigin, int siglen,
543	const char sig_name, const char md_name,
544	const char *file)
545	{
546	size_t len = BUFSIZE;
547	int i, backslash = 0, ret = EXIT_FAILURE;
548	unsigned char *allocated_buf = NULL;
549
550	while (BIO_pending(bp) \|\| !BIO_eof(bp)) {
551	i = BIO_read(bp, (char *)buf, BUFSIZE);
552	if (i < 0) {
553	BIO_printf(bio_err, "Read error in %s\n", file);
554	goto end;
555	}
556	if (i == 0)
557	break;
558	}
559	if (sigin != NULL) {
560	EVP_MD_CTX *ctx;
561	BIO_get_md_ctx(bp, &ctx);
562	i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
563	if (i > 0) {
564	BIO_printf(out, "Verified OK\n");
565	} else if (i == 0) {
566	BIO_printf(out, "Verification failure\n");
567	goto end;
568	} else {
569	BIO_printf(bio_err, "Error verifying data\n");
570	goto end;
571	}
572	ret = EXIT_SUCCESS;
573	goto end;
574	}
575	if (key != NULL) {
576	EVP_MD_CTX *ctx;
577	size_t tmplen;
578
579	BIO_get_md_ctx(bp, &ctx);
580	if (!EVP_DigestSignFinal(ctx, NULL, &tmplen)) {
581	BIO_printf(bio_err, "Error getting maximum length of signed data\n");
582	goto end;
583	}
584	if (tmplen > BUFSIZE) {
585	len = tmplen;
586	allocated_buf = app_malloc(len, "Signature buffer");
587	buf = allocated_buf;
588	}
589	if (!EVP_DigestSignFinal(ctx, buf, &len)) {
590	BIO_printf(bio_err, "Error signing data\n");
591	goto end;
592	}
593	} else if (xoflen > 0) {
594	EVP_MD_CTX *ctx;
595
596	len = xoflen;
597	if (len > BUFSIZE) {
598	allocated_buf = app_malloc(len, "Digest buffer");
599	buf = allocated_buf;
600	}
601
602	BIO_get_md_ctx(bp, &ctx);
603
604	if (!EVP_DigestFinalXOF(ctx, buf, len)) {
605	BIO_printf(bio_err, "Error Digesting Data\n");
606	goto end;
607	}
608	} else {
609	len = BIO_gets(bp, (char *)buf, BUFSIZE);
610	if ((int)len < 0)
611	goto end;
612	}
613
614	if (binout) {
615	BIO_write(out, buf, len);
616	} else if (sep == 2) {
617	file = newline_escape_filename(file, &backslash);
618
619	if (backslash == 1)
620	BIO_puts(out, "\\");
621
622	for (i = 0; i < (int)len; i++)
623	BIO_printf(out, "%02x", buf[i]);
624
625	BIO_printf(out, " *%s\n", file);
626	OPENSSL_free((char *)file);
627	} else {
628	if (sig_name != NULL) {
629	BIO_puts(out, sig_name);
630	if (md_name != NULL)
631	BIO_printf(out, "-%s", md_name);
632	BIO_printf(out, "(%s)= ", file);
633	} else if (md_name != NULL) {
634	BIO_printf(out, "%s(%s)= ", md_name, file);
635	} else {
636	BIO_printf(out, "(%s)= ", file);
637	}
638	for (i = 0; i < (int)len; i++) {
639	if (sep && (i != 0))
640	BIO_printf(out, ":");
641	BIO_printf(out, "%02x", buf[i]);
642	}
643	BIO_printf(out, "\n");
644	}
645
646	ret = EXIT_SUCCESS;
647	end:
648	if (allocated_buf != NULL)
649	OPENSSL_clear_free(allocated_buf, len);
650
651	return ret;
652	}

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