1 /*
2 * Copyright 1995-2026 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 static int do_fp_oneshot_sign(BIO *out, EVP_MD_CTX *ctx, BIO *in, int sep, int binout,
28 EVP_PKEY *key, unsigned char *sigin, int siglen,
29 const char *sig_name, const char *file);
30 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, int xoflen,
31 EVP_PKEY *key, unsigned char *sigin, int siglen,
32 const char *sig_name, const char *md_name,
33 const char *file);
34 static void show_digests(const OBJ_NAME *name, void *bio_);
35
36 struct doall_dgst_digests {
37 BIO *bio;
38 int n;
39 };
40
41 typedef enum OPTION_choice {
42 OPT_COMMON,
43 OPT_LIST,
44 OPT_C,
45 OPT_R,
46 OPT_OUT,
47 OPT_SIGN,
48 OPT_PASSIN,
49 OPT_VERIFY,
50 OPT_PRVERIFY,
51 OPT_SIGNATURE,
52 OPT_KEYFORM,
53 OPT_ENGINE,
54 OPT_ENGINE_IMPL,
55 OPT_HEX,
56 OPT_BINARY,
57 OPT_DEBUG,
58 OPT_FIPS_FINGERPRINT,
59 OPT_HMAC,
60 OPT_MAC,
61 OPT_SIGOPT,
62 OPT_MACOPT,
63 OPT_XOFLEN,
64 OPT_DIGEST,
65 OPT_R_ENUM,
66 OPT_PROV_ENUM
67 } OPTION_CHOICE;
68
69 const OPTIONS dgst_options[] = {
70 { OPT_HELP_STR, 1, '-', "Usage: %s [options] [file...]\n" },
71
72 OPT_SECTION("General"),
73 { "help", OPT_HELP, '-', "Display this summary" },
74 { "list", OPT_LIST, '-', "List digests" },
75 #ifndef OPENSSL_NO_ENGINE
76 { "engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device" },
77 { "engine_impl", OPT_ENGINE_IMPL, '-',
78 "Also use engine given by -engine for digest operations" },
79 #endif
80 { "passin", OPT_PASSIN, 's', "Input file pass phrase source" },
81
82 OPT_SECTION("Output"),
83 { "c", OPT_C, '-', "Print the digest with separating colons" },
84 { "r", OPT_R, '-', "Print the digest in coreutils format" },
85 { "out", OPT_OUT, '>', "Output to filename rather than stdout" },
86 { "keyform", OPT_KEYFORM, 'f', "Key file format (ENGINE, other values ignored)" },
87 { "hex", OPT_HEX, '-', "Print as hex dump" },
88 { "binary", OPT_BINARY, '-', "Print in binary form" },
89 { "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" },
90 { "d", OPT_DEBUG, '-', "Print debug info" },
91 { "debug", OPT_DEBUG, '-', "Print debug info" },
92
93 OPT_SECTION("Signing"),
94 { "sign", OPT_SIGN, 's', "Sign digest using private key" },
95 { "verify", OPT_VERIFY, 's', "Verify a signature using public key" },
96 { "prverify", OPT_PRVERIFY, 's', "Verify a signature using private key" },
97 { "sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form" },
98 { "signature", OPT_SIGNATURE, '<', "File with signature to verify" },
99 { "hmac", OPT_HMAC, 's', "Create hashed MAC with key" },
100 { "mac", OPT_MAC, 's', "Create MAC (not necessarily HMAC)" },
101 { "macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key" },
102 { "", OPT_DIGEST, '-', "Any supported digest" },
103 { "fips-fingerprint", OPT_FIPS_FINGERPRINT, '-',
104 "Compute HMAC with the key used in OpenSSL-FIPS fingerprint" },
105
106 OPT_R_OPTIONS,
107 OPT_PROV_OPTIONS,
108
109 OPT_PARAMETERS(),
110 { "file", 0, 0, "Files to digest (optional; default is stdin)" },
111 { NULL }
112 };
113
dgst_main(int argc,char ** argv)114 int dgst_main(int argc, char **argv)
115 {
116 BIO *in = NULL, *inp = NULL, *bmd = NULL, *out = NULL;
117 ENGINE *e = NULL, *impl = NULL;
118 EVP_PKEY *sigkey = NULL;
119 STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
120 char *hmac_key = NULL;
121 char *mac_name = NULL, *digestname = NULL;
122 char *passinarg = NULL, *passin = NULL;
123 EVP_MD *md = NULL;
124 const char *outfile = NULL, *keyfile = NULL, *prog = NULL;
125 const char *sigfile = NULL;
126 const char *md_name = NULL;
127 OPTION_CHOICE o;
128 int separator = 0, debug = 0, keyform = FORMAT_UNDEF, siglen = 0;
129 int i, ret = EXIT_FAILURE, out_bin = -1, want_pub = 0, do_verify = 0;
130 int xoflen = 0;
131 unsigned char *buf = NULL, *sigbuf = NULL;
132 int engine_impl = 0;
133 struct doall_dgst_digests dec;
134 EVP_MD_CTX *signctx = NULL;
135 int oneshot_sign = 0;
136
137 buf = app_malloc(BUFSIZE, "I/O buffer");
138 md = (EVP_MD *)EVP_get_digestbyname(argv[0]);
139 if (md != NULL)
140 digestname = argv[0];
141
142 opt_set_unknown_name("digest");
143 prog = opt_init(argc, argv, dgst_options);
144 while ((o = opt_next()) != OPT_EOF) {
145 switch (o) {
146 case OPT_EOF:
147 case OPT_ERR:
148 opthelp:
149 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
150 goto end;
151 case OPT_HELP:
152 opt_help(dgst_options);
153 ret = EXIT_SUCCESS;
154 goto end;
155 case OPT_LIST:
156 BIO_printf(bio_out, "Supported digests:\n");
157 dec.bio = bio_out;
158 dec.n = 0;
159 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH,
160 show_digests, &dec);
161 BIO_printf(bio_out, "\n");
162 ret = EXIT_SUCCESS;
163 goto end;
164 case OPT_C:
165 separator = 1;
166 break;
167 case OPT_R:
168 separator = 2;
169 break;
170 case OPT_R_CASES:
171 if (!opt_rand(o))
172 goto end;
173 break;
174 case OPT_OUT:
175 outfile = opt_arg();
176 break;
177 case OPT_SIGN:
178 keyfile = opt_arg();
179 break;
180 case OPT_PASSIN:
181 passinarg = opt_arg();
182 break;
183 case OPT_VERIFY:
184 keyfile = opt_arg();
185 want_pub = do_verify = 1;
186 break;
187 case OPT_PRVERIFY:
188 keyfile = opt_arg();
189 do_verify = 1;
190 break;
191 case OPT_SIGNATURE:
192 sigfile = opt_arg();
193 break;
194 case OPT_KEYFORM:
195 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
196 goto opthelp;
197 break;
198 case OPT_ENGINE:
199 e = setup_engine(opt_arg(), 0);
200 break;
201 case OPT_ENGINE_IMPL:
202 engine_impl = 1;
203 break;
204 case OPT_HEX:
205 out_bin = 0;
206 break;
207 case OPT_BINARY:
208 out_bin = 1;
209 break;
210 case OPT_XOFLEN:
211 xoflen = atoi(opt_arg());
212 break;
213 case OPT_DEBUG:
214 debug = 1;
215 break;
216 case OPT_FIPS_FINGERPRINT:
217 hmac_key = "etaonrishdlcupfm";
218 break;
219 case OPT_HMAC:
220 hmac_key = opt_arg();
221 break;
222 case OPT_MAC:
223 mac_name = opt_arg();
224 break;
225 case OPT_SIGOPT:
226 if (!sigopts)
227 sigopts = sk_OPENSSL_STRING_new_null();
228 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
229 goto opthelp;
230 break;
231 case OPT_MACOPT:
232 if (!macopts)
233 macopts = sk_OPENSSL_STRING_new_null();
234 if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
235 goto opthelp;
236 break;
237 case OPT_DIGEST:
238 digestname = opt_unknown();
239 break;
240 case OPT_PROV_CASES:
241 if (!opt_provider(o))
242 goto end;
243 break;
244 }
245 }
246
247 /* Remaining args are files to digest. */
248 argc = opt_num_rest();
249 argv = opt_rest();
250 if (keyfile != NULL && argc > 1) {
251 BIO_printf(bio_err, "%s: Can only sign or verify one file.\n", prog);
252 goto end;
253 }
254 if (!app_RAND_load())
255 goto end;
256
257 if (digestname != NULL) {
258 if (!opt_md(digestname, &md))
259 goto opthelp;
260 }
261
262 if (do_verify && sigfile == NULL) {
263 BIO_printf(bio_err,
264 "No signature to verify: use the -signature option\n");
265 goto end;
266 }
267 if (engine_impl)
268 impl = e;
269
270 in = BIO_new(BIO_s_file());
271 bmd = BIO_new(BIO_f_md());
272 if (in == NULL || bmd == NULL)
273 goto end;
274
275 if (debug) {
276 BIO_set_callback_ex(in, BIO_debug_callback_ex);
277 /* needed for windows 3.1 */
278 BIO_set_callback_arg(in, (char *)bio_err);
279 }
280
281 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
282 BIO_printf(bio_err, "Error getting password\n");
283 goto end;
284 }
285
286 if (out_bin == -1) {
287 if (keyfile != NULL)
288 out_bin = 1;
289 else
290 out_bin = 0;
291 }
292
293 out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
294 if (out == NULL)
295 goto end;
296
297 if ((!(mac_name == NULL) + !(keyfile == NULL) + !(hmac_key == NULL)) > 1) {
298 BIO_printf(bio_err, "MAC and signing key cannot both be specified\n");
299 goto end;
300 }
301
302 if (keyfile != NULL) {
303 if (want_pub)
304 sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
305 else
306 sigkey = load_key(keyfile, keyform, 0, passin, e, "private key");
307 if (sigkey == NULL) {
308 /*
309 * load_[pub]key() has already printed an appropriate message
310 */
311 goto end;
312 }
313 {
314 char def_md[80];
315
316 if (EVP_PKEY_get_default_digest_name(sigkey, def_md,
317 sizeof(def_md))
318 == 2
319 && strcmp(def_md, "UNDEF") == 0)
320 oneshot_sign = 1;
321 signctx = EVP_MD_CTX_new();
322 if (signctx == NULL)
323 goto end;
324 }
325 }
326
327 if (mac_name != NULL) {
328 EVP_PKEY_CTX *mac_ctx = NULL;
329
330 if (!init_gen_str(&mac_ctx, mac_name, impl, 0, NULL, NULL))
331 goto end;
332 if (macopts != NULL) {
333 for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
334 char *macopt = sk_OPENSSL_STRING_value(macopts, i);
335
336 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
337 EVP_PKEY_CTX_free(mac_ctx);
338 BIO_printf(bio_err, "MAC parameter error \"%s\"\n", macopt);
339 goto end;
340 }
341 }
342 }
343
344 sigkey = app_keygen(mac_ctx, mac_name, 0, 0 /* not verbose */);
345 /* Verbose output would make external-tests gost-engine fail */
346 EVP_PKEY_CTX_free(mac_ctx);
347 if (sigkey == NULL)
348 goto end;
349 }
350
351 if (hmac_key != NULL) {
352 if (md == NULL) {
353 md = (EVP_MD *)EVP_sha256();
354 digestname = SN_sha256;
355 }
356 sigkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, impl,
357 (unsigned char *)hmac_key,
358 strlen(hmac_key));
359 if (sigkey == NULL)
360 goto end;
361 }
362
363 if (sigkey != NULL) {
364 EVP_MD_CTX *mctx = NULL;
365 EVP_PKEY_CTX *pctx = NULL;
366 int res;
367
368 if (oneshot_sign) {
369 mctx = signctx;
370 } else if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
371 BIO_printf(bio_err, "Error getting context\n");
372 goto end;
373 }
374 if (do_verify)
375 if (impl == NULL)
376 res = EVP_DigestVerifyInit_ex(mctx, &pctx, digestname,
377 app_get0_libctx(),
378 app_get0_propq(), sigkey, NULL);
379 else
380 res = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
381 else if (impl == NULL)
382 res = EVP_DigestSignInit_ex(mctx, &pctx, digestname,
383 app_get0_libctx(),
384 app_get0_propq(), sigkey, NULL);
385 else
386 res = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
387 if (res == 0) {
388 BIO_printf(bio_err, "Error setting context\n");
389 goto end;
390 }
391 if (sigopts != NULL) {
392 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
393 char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
394
395 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
396 BIO_printf(bio_err, "Signature parameter error \"%s\"\n",
397 sigopt);
398 goto end;
399 }
400 }
401 }
402 }
403 /* we use md as a filter, reading from 'in' */
404 else {
405 EVP_MD_CTX *mctx = NULL;
406
407 if (oneshot_sign) {
408 BIO_printf(bio_err, "Oneshot algorithms don't use a digest\n");
409 goto end;
410 }
411 if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
412 BIO_printf(bio_err, "Error getting context\n");
413 goto end;
414 }
415 if (md == NULL)
416 md = (EVP_MD *)EVP_sha256();
417 if (!EVP_DigestInit_ex(mctx, md, impl)) {
418 BIO_printf(bio_err, "Error setting digest\n");
419 goto end;
420 }
421 }
422
423 if (sigfile != NULL && sigkey != NULL) {
424 BIO *sigbio = BIO_new_file(sigfile, "rb");
425
426 if (sigbio == NULL) {
427 BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
428 goto end;
429 }
430 siglen = EVP_PKEY_get_size(sigkey);
431 sigbuf = app_malloc(siglen, "signature buffer");
432 siglen = BIO_read(sigbio, sigbuf, siglen);
433 BIO_free(sigbio);
434 if (siglen <= 0) {
435 BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
436 goto end;
437 }
438 }
439 if (!oneshot_sign) {
440 inp = BIO_push(bmd, in);
441
442 if (md == NULL) {
443 EVP_MD_CTX *tctx;
444
445 BIO_get_md_ctx(bmd, &tctx);
446 md = EVP_MD_CTX_get1_md(tctx);
447 }
448 if (md != NULL)
449 md_name = EVP_MD_get0_name(md);
450 }
451 if (xoflen > 0) {
452 if (!EVP_MD_xof(md)) {
453 BIO_printf(bio_err, "Length can only be specified for XOF\n");
454 goto end;
455 }
456 /*
457 * Signing using XOF is not supported by any algorithms currently since
458 * each algorithm only calls EVP_DigestFinal_ex() in their sign_final
459 * and verify_final methods.
460 */
461 if (sigkey != NULL) {
462 BIO_printf(bio_err, "Signing key cannot be specified for XOF\n");
463 goto end;
464 }
465 }
466
467 if (argc == 0) {
468 BIO_set_fp(in, stdin, BIO_NOCLOSE);
469 if (oneshot_sign)
470 ret = do_fp_oneshot_sign(out, signctx, in, separator, out_bin,
471 sigkey, sigbuf, siglen, NULL, "stdin");
472 else
473 ret = do_fp(out, buf, inp, separator, out_bin, xoflen,
474 sigkey, sigbuf, siglen, NULL, md_name, "stdin");
475 } else {
476 const char *sig_name = NULL;
477
478 if (out_bin == 0) {
479 if (sigkey != NULL)
480 sig_name = EVP_PKEY_get0_type_name(sigkey);
481 }
482 ret = EXIT_SUCCESS;
483 for (i = 0; i < argc; i++) {
484 if (BIO_read_filename(in, argv[i]) <= 0) {
485 perror(argv[i]);
486 ret = EXIT_FAILURE;
487 continue;
488 } else {
489 if (oneshot_sign) {
490 if (do_fp_oneshot_sign(out, signctx, in, separator, out_bin,
491 sigkey, sigbuf, siglen, sig_name,
492 argv[i]))
493 ret = EXIT_FAILURE;
494 } else {
495 if (do_fp(out, buf, inp, separator, out_bin, xoflen,
496 sigkey, sigbuf, siglen, sig_name, md_name, argv[i]))
497 ret = EXIT_FAILURE;
498 }
499 }
500 (void)BIO_reset(bmd);
501 }
502 }
503 end:
504 if (ret != EXIT_SUCCESS)
505 ERR_print_errors(bio_err);
506 OPENSSL_clear_free(buf, BUFSIZE);
507 BIO_free(in);
508 OPENSSL_free(passin);
509 BIO_free_all(out);
510 EVP_MD_free(md);
511 EVP_PKEY_free(sigkey);
512 EVP_MD_CTX_free(signctx);
513 sk_OPENSSL_STRING_free(sigopts);
514 sk_OPENSSL_STRING_free(macopts);
515 OPENSSL_free(sigbuf);
516 BIO_free(bmd);
517 release_engine(e);
518 return ret;
519 }
520
show_digests(const OBJ_NAME * name,void * arg)521 static void show_digests(const OBJ_NAME *name, void *arg)
522 {
523 struct doall_dgst_digests *dec = (struct doall_dgst_digests *)arg;
524 EVP_MD *md = NULL;
525
526 /* Filter out signed digests (a.k.a signature algorithms) */
527 if (strstr(name->name, "rsa") != NULL || strstr(name->name, "RSA") != NULL)
528 return;
529
530 if (!islower((unsigned char)*name->name))
531 return;
532
533 /* Filter out message digests that we cannot use */
534 md = EVP_MD_fetch(app_get0_libctx(), name->name, app_get0_propq());
535 if (md == NULL) {
536 if (EVP_get_digestbyname(name->name) == NULL)
537 return;
538 }
539
540 BIO_printf(dec->bio, "-%-25s", name->name);
541 if (++dec->n == 3) {
542 BIO_printf(dec->bio, "\n");
543 dec->n = 0;
544 } else {
545 BIO_printf(dec->bio, " ");
546 }
547
548 EVP_MD_free(md);
549 }
550
551 /*
552 * The newline_escape_filename function performs newline escaping for any
553 * filename that contains a newline. This function also takes a pointer
554 * to backslash. The backslash pointer is a flag to indicating whether a newline
555 * is present in the filename. If a newline is present, the backslash flag is
556 * set and the output format will contain a backslash at the beginning of the
557 * digest output. This output format is to replicate the output format found
558 * in the '*sum' checksum programs. This aims to preserve backward
559 * compatibility.
560 */
newline_escape_filename(const char * file,int * backslash)561 static const char *newline_escape_filename(const char *file, int *backslash)
562 {
563 size_t i, e = 0, length = strlen(file), newline_count = 0, mem_len = 0;
564 char *file_cpy = NULL;
565
566 for (i = 0; i < length; i++)
567 if (file[i] == '\n')
568 newline_count++;
569
570 mem_len = length + newline_count + 1;
571 file_cpy = app_malloc(mem_len, file);
572 i = 0;
573
574 while (e < length) {
575 const char c = file[e];
576 if (c == '\n') {
577 file_cpy[i++] = '\\';
578 file_cpy[i++] = 'n';
579 *backslash = 1;
580 } else {
581 file_cpy[i++] = c;
582 }
583 e++;
584 }
585 file_cpy[i] = '\0';
586 return (const char *)file_cpy;
587 }
588
print_out(BIO * out,unsigned char * buf,size_t len,int sep,int binout,const char * sig_name,const char * md_name,const char * file)589 static void print_out(BIO *out, unsigned char *buf, size_t len,
590 int sep, int binout,
591 const char *sig_name, const char *md_name, const char *file)
592 {
593 int i, backslash = 0;
594
595 if (binout) {
596 BIO_write(out, buf, len);
597 } else if (sep == 2) {
598 file = newline_escape_filename(file, &backslash);
599
600 if (backslash == 1)
601 BIO_puts(out, "\\");
602
603 for (i = 0; i < (int)len; i++)
604 BIO_printf(out, "%02x", buf[i]);
605
606 BIO_printf(out, " *%s\n", file);
607 OPENSSL_free((char *)file);
608 } else {
609 if (sig_name != NULL) {
610 BIO_puts(out, sig_name);
611 if (md_name != NULL)
612 BIO_printf(out, "-%s", md_name);
613 BIO_printf(out, "(%s)= ", file);
614 } else if (md_name != NULL) {
615 BIO_printf(out, "%s(%s)= ", md_name, file);
616 } else {
617 BIO_printf(out, "(%s)= ", file);
618 }
619 for (i = 0; i < (int)len; i++) {
620 if (sep && (i != 0))
621 BIO_printf(out, ":");
622 BIO_printf(out, "%02x", buf[i]);
623 }
624 BIO_printf(out, "\n");
625 }
626 }
627
print_verify_result(BIO * out,int i)628 static void print_verify_result(BIO *out, int i)
629 {
630 if (i > 0)
631 BIO_printf(out, "Verified OK\n");
632 else if (i == 0)
633 BIO_printf(out, "Verification failure\n");
634 else
635 BIO_printf(bio_err, "Error verifying data\n");
636 }
637
do_fp(BIO * out,unsigned char * buf,BIO * bp,int sep,int binout,int xoflen,EVP_PKEY * key,unsigned char * sigin,int siglen,const char * sig_name,const char * md_name,const char * file)638 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, int xoflen,
639 EVP_PKEY *key, unsigned char *sigin, int siglen,
640 const char *sig_name, const char *md_name,
641 const char *file)
642 {
643 size_t len = BUFSIZE;
644 int i, ret = EXIT_FAILURE;
645 unsigned char *allocated_buf = NULL;
646
647 while (BIO_pending(bp) || !BIO_eof(bp)) {
648 i = BIO_read(bp, (char *)buf, BUFSIZE);
649 if (i < 0) {
650 BIO_printf(bio_err, "Read error in %s\n", file);
651 goto end;
652 }
653 if (i == 0)
654 break;
655 }
656 if (sigin != NULL) {
657 EVP_MD_CTX *ctx;
658 BIO_get_md_ctx(bp, &ctx);
659 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
660 print_verify_result(out, i);
661 if (i > 0)
662 ret = EXIT_SUCCESS;
663 goto end;
664 }
665 if (key != NULL) {
666 EVP_MD_CTX *ctx;
667 size_t tmplen;
668
669 BIO_get_md_ctx(bp, &ctx);
670 if (!EVP_DigestSignFinal(ctx, NULL, &tmplen)) {
671 BIO_printf(bio_err, "Error getting maximum length of signed data\n");
672 goto end;
673 }
674 if (tmplen > BUFSIZE) {
675 len = tmplen;
676 allocated_buf = app_malloc(len, "Signature buffer");
677 buf = allocated_buf;
678 }
679 if (!EVP_DigestSignFinal(ctx, buf, &len)) {
680 BIO_printf(bio_err, "Error signing data\n");
681 goto end;
682 }
683 } else if (xoflen > 0) {
684 EVP_MD_CTX *ctx;
685
686 len = xoflen;
687 if (len > BUFSIZE) {
688 allocated_buf = app_malloc(len, "Digest buffer");
689 buf = allocated_buf;
690 }
691
692 BIO_get_md_ctx(bp, &ctx);
693
694 if (!EVP_DigestFinalXOF(ctx, buf, len)) {
695 BIO_printf(bio_err, "Error Digesting Data\n");
696 goto end;
697 }
698 } else {
699 len = BIO_gets(bp, (char *)buf, BUFSIZE);
700 if ((int)len < 0)
701 goto end;
702 }
703 print_out(out, buf, len, sep, binout, sig_name, md_name, file);
704 ret = EXIT_SUCCESS;
705 end:
706 if (allocated_buf != NULL)
707 OPENSSL_clear_free(allocated_buf, len);
708
709 return ret;
710 }
711
712 /*
713 * Some new algorithms only support one shot operations.
714 * For these we need to buffer all input and then do the sign on the
715 * total buffered input. These algorithms set a NULL digest name which is
716 * then used inside EVP_DigestVerify() and EVP_DigestSign().
717 */
do_fp_oneshot_sign(BIO * out,EVP_MD_CTX * ctx,BIO * in,int sep,int binout,EVP_PKEY * key,unsigned char * sigin,int siglen,const char * sig_name,const char * file)718 static int do_fp_oneshot_sign(BIO *out, EVP_MD_CTX *ctx, BIO *in, int sep, int binout,
719 EVP_PKEY *key, unsigned char *sigin, int siglen,
720 const char *sig_name, const char *file)
721 {
722 int res, ret = EXIT_FAILURE;
723 size_t len = 0;
724 size_t buflen = 0;
725 size_t maxlen = 16 * 1024 * 1024;
726 uint8_t *buf = NULL, *sig = NULL;
727
728 if (!bio_to_mem(&buf, &buflen, maxlen, in)) {
729 BIO_printf(bio_err, "Read error in %s\n", file);
730 return ret;
731 }
732 if (sigin != NULL) {
733 res = EVP_DigestVerify(ctx, sigin, siglen, buf, buflen);
734 print_verify_result(out, res);
735 if (res > 0)
736 ret = EXIT_SUCCESS;
737 goto end;
738 }
739 if (key != NULL) {
740 if (EVP_DigestSign(ctx, NULL, &len, buf, buflen) != 1) {
741 BIO_printf(bio_err, "Error getting maximum length of signed data\n");
742 goto end;
743 }
744 sig = app_malloc(len, "Signature buffer");
745 if (EVP_DigestSign(ctx, sig, &len, buf, buflen) != 1) {
746 BIO_printf(bio_err, "Error signing data\n");
747 goto end;
748 }
749 print_out(out, sig, len, sep, binout, sig_name, NULL, file);
750 ret = EXIT_SUCCESS;
751 } else {
752 BIO_printf(bio_err, "key must be set for one-shot algorithms\n");
753 goto end;
754 }
755
756 end:
757 OPENSSL_free(sig);
758 OPENSSL_clear_free(buf, buflen);
759
760 return ret;
761 }
762