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path: root/src/lib/libcrypto/ts/ts_rsp_sign.c
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-rw-r--r--src/lib/libcrypto/ts/ts_rsp_sign.c1022
1 files changed, 0 insertions, 1022 deletions
diff --git a/src/lib/libcrypto/ts/ts_rsp_sign.c b/src/lib/libcrypto/ts/ts_rsp_sign.c
deleted file mode 100644
index f9e8c53cc8..0000000000
--- a/src/lib/libcrypto/ts/ts_rsp_sign.c
+++ /dev/null
@@ -1,1022 +0,0 @@
1/* $OpenBSD: ts_rsp_sign.c,v 1.20 2016/03/11 07:08:45 mmcc Exp $ */
2/* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL
3 * project 2002.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <sys/time.h>
60
61#include <string.h>
62
63#include <openssl/err.h>
64#include <openssl/objects.h>
65#include <openssl/pkcs7.h>
66#include <openssl/ts.h>
67
68/* Private function declarations. */
69
70static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *);
71static int def_time_cb(struct TS_resp_ctx *, void *, time_t *sec, long *usec);
72static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *);
73
74static void TS_RESP_CTX_init(TS_RESP_CTX *ctx);
75static void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx);
76static int TS_RESP_check_request(TS_RESP_CTX *ctx);
77static ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx);
78static TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx,
79 ASN1_OBJECT *policy);
80static int TS_RESP_process_extensions(TS_RESP_CTX *ctx);
81static int TS_RESP_sign(TS_RESP_CTX *ctx);
82
83static ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert,
84 STACK_OF(X509) *certs);
85static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed);
86static int TS_TST_INFO_content_new(PKCS7 *p7);
87static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc);
88
89static ASN1_GENERALIZEDTIME *TS_RESP_set_genTime_with_precision(
90 ASN1_GENERALIZEDTIME *, time_t, long, unsigned);
91
92/* Default callbacks for response generation. */
93
94static ASN1_INTEGER *
95def_serial_cb(struct TS_resp_ctx *ctx, void *data)
96{
97 ASN1_INTEGER *serial = ASN1_INTEGER_new();
98
99 if (!serial)
100 goto err;
101 if (!ASN1_INTEGER_set(serial, 1))
102 goto err;
103 return serial;
104
105err:
106 TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE);
107 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
108 "Error during serial number generation.");
109 return NULL;
110}
111
112/* Use the gettimeofday function call. */
113static int
114def_time_cb(struct TS_resp_ctx *ctx, void *data, time_t *sec, long *usec)
115{
116 struct timeval tv;
117
118 if (gettimeofday(&tv, NULL) != 0) {
119 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
120 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
121 "Time is not available.");
122 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
123 return 0;
124 }
125 /* Return time to caller. */
126 *sec = tv.tv_sec;
127 *usec = tv.tv_usec;
128
129 return 1;
130}
131
132static int
133def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, void *data)
134{
135 /* No extensions are processed here. */
136 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
137 "Unsupported extension.");
138 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION);
139 return 0;
140}
141
142/* TS_RESP_CTX management functions. */
143
144TS_RESP_CTX *
145TS_RESP_CTX_new(void)
146{
147 TS_RESP_CTX *ctx;
148
149 if (!(ctx = calloc(1, sizeof(TS_RESP_CTX)))) {
150 TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE);
151 return NULL;
152 }
153
154 /* Setting default callbacks. */
155 ctx->serial_cb = def_serial_cb;
156 ctx->time_cb = def_time_cb;
157 ctx->extension_cb = def_extension_cb;
158
159 return ctx;
160}
161
162void
163TS_RESP_CTX_free(TS_RESP_CTX *ctx)
164{
165 if (!ctx)
166 return;
167
168 X509_free(ctx->signer_cert);
169 EVP_PKEY_free(ctx->signer_key);
170 sk_X509_pop_free(ctx->certs, X509_free);
171 sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free);
172 ASN1_OBJECT_free(ctx->default_policy);
173 sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */
174 ASN1_INTEGER_free(ctx->seconds);
175 ASN1_INTEGER_free(ctx->millis);
176 ASN1_INTEGER_free(ctx->micros);
177 free(ctx);
178}
179
180int
181TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer)
182{
183 if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) {
184 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT,
185 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE);
186 return 0;
187 }
188 X509_free(ctx->signer_cert);
189 ctx->signer_cert = signer;
190 CRYPTO_add(&ctx->signer_cert->references, +1, CRYPTO_LOCK_X509);
191 return 1;
192}
193
194int
195TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key)
196{
197 EVP_PKEY_free(ctx->signer_key);
198 ctx->signer_key = key;
199 CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY);
200
201 return 1;
202}
203
204int
205TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *def_policy)
206{
207 if (ctx->default_policy)
208 ASN1_OBJECT_free(ctx->default_policy);
209 if (!(ctx->default_policy = OBJ_dup(def_policy)))
210 goto err;
211 return 1;
212
213err:
214 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE);
215 return 0;
216}
217
218int
219TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs)
220{
221 int i;
222
223 if (ctx->certs) {
224 sk_X509_pop_free(ctx->certs, X509_free);
225 ctx->certs = NULL;
226 }
227 if (!certs)
228 return 1;
229 if (!(ctx->certs = sk_X509_dup(certs))) {
230 TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE);
231 return 0;
232 }
233 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
234 X509 *cert = sk_X509_value(ctx->certs, i);
235 CRYPTO_add(&cert->references, +1, CRYPTO_LOCK_X509);
236 }
237
238 return 1;
239}
240
241int
242TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *policy)
243{
244 ASN1_OBJECT *copy = NULL;
245
246 /* Create new policy stack if necessary. */
247 if (!ctx->policies && !(ctx->policies = sk_ASN1_OBJECT_new_null()))
248 goto err;
249 if (!(copy = OBJ_dup(policy)))
250 goto err;
251 if (!sk_ASN1_OBJECT_push(ctx->policies, copy))
252 goto err;
253
254 return 1;
255
256err:
257 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE);
258 ASN1_OBJECT_free(copy);
259 return 0;
260}
261
262int
263TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md)
264{
265 /* Create new md stack if necessary. */
266 if (!ctx->mds && !(ctx->mds = sk_EVP_MD_new_null()))
267 goto err;
268 /* Add the shared md, no copy needed. */
269 if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md))
270 goto err;
271
272 return 1;
273
274err:
275 TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE);
276 return 0;
277}
278
279#define TS_RESP_CTX_accuracy_free(ctx) \
280 ASN1_INTEGER_free(ctx->seconds); \
281 ctx->seconds = NULL; \
282 ASN1_INTEGER_free(ctx->millis); \
283 ctx->millis = NULL; \
284 ASN1_INTEGER_free(ctx->micros); \
285 ctx->micros = NULL;
286
287int
288TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, int secs, int millis, int micros)
289{
290 TS_RESP_CTX_accuracy_free(ctx);
291 if (secs && (!(ctx->seconds = ASN1_INTEGER_new()) ||
292 !ASN1_INTEGER_set(ctx->seconds, secs)))
293 goto err;
294 if (millis && (!(ctx->millis = ASN1_INTEGER_new()) ||
295 !ASN1_INTEGER_set(ctx->millis, millis)))
296 goto err;
297 if (micros && (!(ctx->micros = ASN1_INTEGER_new()) ||
298 !ASN1_INTEGER_set(ctx->micros, micros)))
299 goto err;
300
301 return 1;
302
303err:
304 TS_RESP_CTX_accuracy_free(ctx);
305 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE);
306 return 0;
307}
308
309void
310TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags)
311{
312 ctx->flags |= flags;
313}
314
315void
316TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data)
317{
318 ctx->serial_cb = cb;
319 ctx->serial_cb_data = data;
320}
321
322void
323TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, TS_extension_cb cb, void *data)
324{
325 ctx->extension_cb = cb;
326 ctx->extension_cb_data = data;
327}
328
329int
330TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, int status, const char *text)
331{
332 TS_STATUS_INFO *si = NULL;
333 ASN1_UTF8STRING *utf8_text = NULL;
334 int ret = 0;
335
336 if (!(si = TS_STATUS_INFO_new()))
337 goto err;
338 if (!ASN1_INTEGER_set(si->status, status))
339 goto err;
340 if (text) {
341 if (!(utf8_text = ASN1_UTF8STRING_new()) ||
342 !ASN1_STRING_set(utf8_text, text, strlen(text)))
343 goto err;
344 if (!si->text && !(si->text = sk_ASN1_UTF8STRING_new_null()))
345 goto err;
346 if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text))
347 goto err;
348 utf8_text = NULL; /* Ownership is lost. */
349 }
350 if (!TS_RESP_set_status_info(ctx->response, si))
351 goto err;
352 ret = 1;
353
354err:
355 if (!ret)
356 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE);
357 TS_STATUS_INFO_free(si);
358 ASN1_UTF8STRING_free(utf8_text);
359 return ret;
360}
361
362int
363TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, int status, const char *text)
364{
365 int ret = 1;
366 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
367
368 if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) {
369 /* Status has not been set, set it now. */
370 ret = TS_RESP_CTX_set_status_info(ctx, status, text);
371 }
372 return ret;
373}
374
375int
376TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure)
377{
378 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
379
380 if (!si->failure_info && !(si->failure_info = ASN1_BIT_STRING_new()))
381 goto err;
382 if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1))
383 goto err;
384 return 1;
385
386err:
387 TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE);
388 return 0;
389}
390
391TS_REQ *
392TS_RESP_CTX_get_request(TS_RESP_CTX *ctx)
393{
394 return ctx->request;
395}
396
397TS_TST_INFO *
398TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx)
399{
400 return ctx->tst_info;
401}
402
403int
404TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, unsigned precision)
405{
406 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
407 return 0;
408 ctx->clock_precision_digits = precision;
409 return 1;
410}
411
412/* Main entry method of the response generation. */
413TS_RESP *
414TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio)
415{
416 ASN1_OBJECT *policy;
417 TS_RESP *response;
418 int result = 0;
419
420 TS_RESP_CTX_init(ctx);
421
422 /* Creating the response object. */
423 if (!(ctx->response = TS_RESP_new())) {
424 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE);
425 goto end;
426 }
427
428 /* Parsing DER request. */
429 if (!(ctx->request = d2i_TS_REQ_bio(req_bio, NULL))) {
430 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
431 "Bad request format or "
432 "system error.");
433 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
434 goto end;
435 }
436
437 /* Setting default status info. */
438 if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL))
439 goto end;
440
441 /* Checking the request format. */
442 if (!TS_RESP_check_request(ctx))
443 goto end;
444
445 /* Checking acceptable policies. */
446 if (!(policy = TS_RESP_get_policy(ctx)))
447 goto end;
448
449 /* Creating the TS_TST_INFO object. */
450 if (!(ctx->tst_info = TS_RESP_create_tst_info(ctx, policy)))
451 goto end;
452
453 /* Processing extensions. */
454 if (!TS_RESP_process_extensions(ctx))
455 goto end;
456
457 /* Generating the signature. */
458 if (!TS_RESP_sign(ctx))
459 goto end;
460
461 /* Everything was successful. */
462 result = 1;
463
464end:
465 if (!result) {
466 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR);
467 if (ctx->response != NULL) {
468 if (TS_RESP_CTX_set_status_info_cond(ctx,
469 TS_STATUS_REJECTION, "Error during response "
470 "generation.") == 0) {
471 TS_RESP_free(ctx->response);
472 ctx->response = NULL;
473 }
474 }
475 }
476 response = ctx->response;
477 ctx->response = NULL; /* Ownership will be returned to caller. */
478 TS_RESP_CTX_cleanup(ctx);
479 return response;
480}
481
482/* Initializes the variable part of the context. */
483static void
484TS_RESP_CTX_init(TS_RESP_CTX *ctx)
485{
486 ctx->request = NULL;
487 ctx->response = NULL;
488 ctx->tst_info = NULL;
489}
490
491/* Cleans up the variable part of the context. */
492static void
493TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx)
494{
495 TS_REQ_free(ctx->request);
496 ctx->request = NULL;
497 TS_RESP_free(ctx->response);
498 ctx->response = NULL;
499 TS_TST_INFO_free(ctx->tst_info);
500 ctx->tst_info = NULL;
501}
502
503/* Checks the format and content of the request. */
504static int
505TS_RESP_check_request(TS_RESP_CTX *ctx)
506{
507 TS_REQ *request = ctx->request;
508 TS_MSG_IMPRINT *msg_imprint;
509 X509_ALGOR *md_alg;
510 int md_alg_id;
511 const ASN1_OCTET_STRING *digest;
512 EVP_MD *md = NULL;
513 int i;
514
515 /* Checking request version. */
516 if (TS_REQ_get_version(request) != 1) {
517 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
518 "Bad request version.");
519 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST);
520 return 0;
521 }
522
523 /* Checking message digest algorithm. */
524 msg_imprint = TS_REQ_get_msg_imprint(request);
525 md_alg = TS_MSG_IMPRINT_get_algo(msg_imprint);
526 md_alg_id = OBJ_obj2nid(md_alg->algorithm);
527 for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) {
528 EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i);
529 if (md_alg_id == EVP_MD_type(current_md))
530 md = current_md;
531 }
532 if (!md) {
533 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
534 "Message digest algorithm is "
535 "not supported.");
536 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
537 return 0;
538 }
539
540 /* No message digest takes parameter. */
541 if (md_alg->parameter &&
542 ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) {
543 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
544 "Superfluous message digest "
545 "parameter.");
546 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
547 return 0;
548 }
549 /* Checking message digest size. */
550 digest = TS_MSG_IMPRINT_get_msg(msg_imprint);
551 if (digest->length != EVP_MD_size(md)) {
552 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
553 "Bad message digest.");
554 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
555 return 0;
556 }
557
558 return 1;
559}
560
561/* Returns the TSA policy based on the requested and acceptable policies. */
562static ASN1_OBJECT *
563TS_RESP_get_policy(TS_RESP_CTX *ctx)
564{
565 ASN1_OBJECT *requested = TS_REQ_get_policy_id(ctx->request);
566 ASN1_OBJECT *policy = NULL;
567 int i;
568
569 if (ctx->default_policy == NULL) {
570 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER);
571 return NULL;
572 }
573 /* Return the default policy if none is requested or the default is
574 requested. */
575 if (!requested || !OBJ_cmp(requested, ctx->default_policy))
576 policy = ctx->default_policy;
577
578 /* Check if the policy is acceptable. */
579 for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) {
580 ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i);
581 if (!OBJ_cmp(requested, current))
582 policy = current;
583 }
584 if (!policy) {
585 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY);
586 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
587 "Requested policy is not "
588 "supported.");
589 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY);
590 }
591 return policy;
592}
593
594/* Creates the TS_TST_INFO object based on the settings of the context. */
595static TS_TST_INFO *
596TS_RESP_create_tst_info(TS_RESP_CTX *ctx, ASN1_OBJECT *policy)
597{
598 int result = 0;
599 TS_TST_INFO *tst_info = NULL;
600 ASN1_INTEGER *serial = NULL;
601 ASN1_GENERALIZEDTIME *asn1_time = NULL;
602 time_t sec;
603 long usec;
604 TS_ACCURACY *accuracy = NULL;
605 const ASN1_INTEGER *nonce;
606 GENERAL_NAME *tsa_name = NULL;
607
608 if (!(tst_info = TS_TST_INFO_new()))
609 goto end;
610 if (!TS_TST_INFO_set_version(tst_info, 1))
611 goto end;
612 if (!TS_TST_INFO_set_policy_id(tst_info, policy))
613 goto end;
614 if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint))
615 goto end;
616 if (!(serial = (*ctx->serial_cb)(ctx, ctx->serial_cb_data)) ||
617 !TS_TST_INFO_set_serial(tst_info, serial))
618 goto end;
619 if (!(*ctx->time_cb)(ctx, ctx->time_cb_data, &sec, &usec) ||
620 !(asn1_time = TS_RESP_set_genTime_with_precision(NULL, sec, usec,
621 ctx->clock_precision_digits)) ||
622 !TS_TST_INFO_set_time(tst_info, asn1_time))
623 goto end;
624
625 /* Setting accuracy if needed. */
626 if ((ctx->seconds || ctx->millis || ctx->micros) &&
627 !(accuracy = TS_ACCURACY_new()))
628 goto end;
629
630 if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds))
631 goto end;
632 if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis))
633 goto end;
634 if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros))
635 goto end;
636 if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy))
637 goto end;
638
639 /* Setting ordering. */
640 if ((ctx->flags & TS_ORDERING) &&
641 !TS_TST_INFO_set_ordering(tst_info, 1))
642 goto end;
643
644 /* Setting nonce if needed. */
645 if ((nonce = TS_REQ_get_nonce(ctx->request)) != NULL &&
646 !TS_TST_INFO_set_nonce(tst_info, nonce))
647 goto end;
648
649 /* Setting TSA name to subject of signer certificate. */
650 if (ctx->flags & TS_TSA_NAME) {
651 if (!(tsa_name = GENERAL_NAME_new()))
652 goto end;
653 tsa_name->type = GEN_DIRNAME;
654 tsa_name->d.dirn =
655 X509_NAME_dup(ctx->signer_cert->cert_info->subject);
656 if (!tsa_name->d.dirn)
657 goto end;
658 if (!TS_TST_INFO_set_tsa(tst_info, tsa_name))
659 goto end;
660 }
661
662 result = 1;
663
664end:
665 if (!result) {
666 TS_TST_INFO_free(tst_info);
667 tst_info = NULL;
668 TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR);
669 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
670 "Error during TSTInfo "
671 "generation.");
672 }
673 GENERAL_NAME_free(tsa_name);
674 TS_ACCURACY_free(accuracy);
675 ASN1_GENERALIZEDTIME_free(asn1_time);
676 ASN1_INTEGER_free(serial);
677
678 return tst_info;
679}
680
681/* Processing the extensions of the request. */
682static int
683TS_RESP_process_extensions(TS_RESP_CTX *ctx)
684{
685 STACK_OF(X509_EXTENSION) *exts = TS_REQ_get_exts(ctx->request);
686 int i;
687 int ok = 1;
688
689 for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) {
690 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
691 /* XXXXX The last argument was previously
692 (void *)ctx->extension_cb, but ISO C doesn't permit
693 converting a function pointer to void *. For lack of
694 better information, I'm placing a NULL there instead.
695 The callback can pick its own address out from the ctx
696 anyway...
697 */
698 ok = (*ctx->extension_cb)(ctx, ext, NULL);
699 }
700
701 return ok;
702}
703
704/* Functions for signing the TS_TST_INFO structure of the context. */
705static int
706TS_RESP_sign(TS_RESP_CTX *ctx)
707{
708 int ret = 0;
709 PKCS7 *p7 = NULL;
710 PKCS7_SIGNER_INFO *si;
711 STACK_OF(X509) *certs; /* Certificates to include in sc. */
712 ESS_SIGNING_CERT *sc = NULL;
713 ASN1_OBJECT *oid;
714 BIO *p7bio = NULL;
715 int i;
716
717 /* Check if signcert and pkey match. */
718 if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) {
719 TSerr(TS_F_TS_RESP_SIGN,
720 TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
721 goto err;
722 }
723
724 /* Create a new PKCS7 signed object. */
725 if (!(p7 = PKCS7_new())) {
726 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
727 goto err;
728 }
729 if (!PKCS7_set_type(p7, NID_pkcs7_signed))
730 goto err;
731
732 /* Force SignedData version to be 3 instead of the default 1. */
733 if (!ASN1_INTEGER_set(p7->d.sign->version, 3))
734 goto err;
735
736 /* Add signer certificate and optional certificate chain. */
737 if (TS_REQ_get_cert_req(ctx->request)) {
738 PKCS7_add_certificate(p7, ctx->signer_cert);
739 if (ctx->certs) {
740 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
741 X509 *cert = sk_X509_value(ctx->certs, i);
742 PKCS7_add_certificate(p7, cert);
743 }
744 }
745 }
746
747 /* Add a new signer info. */
748 if (!(si = PKCS7_add_signature(p7, ctx->signer_cert,
749 ctx->signer_key, EVP_sha1()))) {
750 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR);
751 goto err;
752 }
753
754 /* Add content type signed attribute to the signer info. */
755 oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
756 if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
757 V_ASN1_OBJECT, oid)) {
758 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR);
759 goto err;
760 }
761
762 /* Create the ESS SigningCertificate attribute which contains
763 the signer certificate id and optionally the certificate chain. */
764 certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL;
765 if (!(sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs)))
766 goto err;
767
768 /* Add SigningCertificate signed attribute to the signer info. */
769 if (!ESS_add_signing_cert(si, sc)) {
770 TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR);
771 goto err;
772 }
773
774 /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */
775 if (!TS_TST_INFO_content_new(p7))
776 goto err;
777
778 /* Add the DER encoded tst_info to the PKCS7 structure. */
779 if (!(p7bio = PKCS7_dataInit(p7, NULL))) {
780 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
781 goto err;
782 }
783
784 /* Convert tst_info to DER. */
785 if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) {
786 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
787 goto err;
788 }
789
790 /* Create the signature and add it to the signer info. */
791 if (!PKCS7_dataFinal(p7, p7bio)) {
792 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
793 goto err;
794 }
795
796 /* Set new PKCS7 and TST_INFO objects. */
797 TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info);
798 p7 = NULL; /* Ownership is lost. */
799 ctx->tst_info = NULL; /* Ownership is lost. */
800
801 ret = 1;
802
803err:
804 if (!ret)
805 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
806 "Error during signature "
807 "generation.");
808 BIO_free_all(p7bio);
809 ESS_SIGNING_CERT_free(sc);
810 PKCS7_free(p7);
811 return ret;
812}
813
814static ESS_SIGNING_CERT *
815ESS_SIGNING_CERT_new_init(X509 *signcert, STACK_OF(X509) *certs)
816{
817 ESS_CERT_ID *cid;
818 ESS_SIGNING_CERT *sc = NULL;
819 int i;
820
821 /* Creating the ESS_CERT_ID stack. */
822 if (!(sc = ESS_SIGNING_CERT_new()))
823 goto err;
824 if (!sc->cert_ids && !(sc->cert_ids = sk_ESS_CERT_ID_new_null()))
825 goto err;
826
827 /* Adding the signing certificate id. */
828 if (!(cid = ESS_CERT_ID_new_init(signcert, 0)) ||
829 !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
830 goto err;
831 /* Adding the certificate chain ids. */
832 for (i = 0; i < sk_X509_num(certs); ++i) {
833 X509 *cert = sk_X509_value(certs, i);
834 if (!(cid = ESS_CERT_ID_new_init(cert, 1)) ||
835 !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
836 goto err;
837 }
838
839 return sc;
840
841err:
842 ESS_SIGNING_CERT_free(sc);
843 TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE);
844 return NULL;
845}
846
847static ESS_CERT_ID *
848ESS_CERT_ID_new_init(X509 *cert, int issuer_needed)
849{
850 ESS_CERT_ID *cid = NULL;
851 GENERAL_NAME *name = NULL;
852
853 /* Recompute SHA1 hash of certificate if necessary (side effect). */
854 X509_check_purpose(cert, -1, 0);
855
856 if (!(cid = ESS_CERT_ID_new()))
857 goto err;
858 if (!ASN1_OCTET_STRING_set(cid->hash, cert->sha1_hash,
859 sizeof(cert->sha1_hash)))
860 goto err;
861
862 /* Setting the issuer/serial if requested. */
863 if (issuer_needed) {
864 /* Creating issuer/serial structure. */
865 if (!cid->issuer_serial &&
866 !(cid->issuer_serial = ESS_ISSUER_SERIAL_new()))
867 goto err;
868 /* Creating general name from the certificate issuer. */
869 if (!(name = GENERAL_NAME_new()))
870 goto err;
871 name->type = GEN_DIRNAME;
872 if (!(name->d.dirn = X509_NAME_dup(cert->cert_info->issuer)))
873 goto err;
874 if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name))
875 goto err;
876 name = NULL; /* Ownership is lost. */
877 /* Setting the serial number. */
878 ASN1_INTEGER_free(cid->issuer_serial->serial);
879 if (!(cid->issuer_serial->serial =
880 ASN1_INTEGER_dup(cert->cert_info->serialNumber)))
881 goto err;
882 }
883
884 return cid;
885
886err:
887 GENERAL_NAME_free(name);
888 ESS_CERT_ID_free(cid);
889 TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE);
890 return NULL;
891}
892
893static int
894TS_TST_INFO_content_new(PKCS7 *p7)
895{
896 PKCS7 *ret = NULL;
897 ASN1_OCTET_STRING *octet_string = NULL;
898
899 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
900 if (!(ret = PKCS7_new()))
901 goto err;
902 if (!(ret->d.other = ASN1_TYPE_new()))
903 goto err;
904 ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
905 if (!(octet_string = ASN1_OCTET_STRING_new()))
906 goto err;
907 ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string);
908 octet_string = NULL;
909
910 /* Add encapsulated content to signed PKCS7 structure. */
911 if (!PKCS7_set_content(p7, ret))
912 goto err;
913
914 return 1;
915
916err:
917 ASN1_OCTET_STRING_free(octet_string);
918 PKCS7_free(ret);
919 return 0;
920}
921
922static int
923ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc)
924{
925 ASN1_STRING *seq = NULL;
926 unsigned char *p, *pp = NULL;
927 int len;
928
929 len = i2d_ESS_SIGNING_CERT(sc, NULL);
930 if (!(pp = malloc(len))) {
931 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
932 goto err;
933 }
934 p = pp;
935 i2d_ESS_SIGNING_CERT(sc, &p);
936 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
937 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
938 goto err;
939 }
940 free(pp);
941 pp = NULL;
942 return PKCS7_add_signed_attribute(si,
943 NID_id_smime_aa_signingCertificate, V_ASN1_SEQUENCE, seq);
944
945err:
946 ASN1_STRING_free(seq);
947 free(pp);
948
949 return 0;
950}
951
952
953static ASN1_GENERALIZEDTIME *
954TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time,
955 time_t sec, long usec, unsigned precision)
956{
957 struct tm *tm = NULL;
958 char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS];
959 char usecstr[TS_MAX_CLOCK_PRECISION_DIGITS + 2];
960 char *p;
961 int rv;
962
963 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
964 goto err;
965
966 if (!(tm = gmtime(&sec)))
967 goto err;
968
969 /*
970 * Put "genTime_str" in GeneralizedTime format. We work around the
971 * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST
972 * NOT include fractional seconds") and OpenSSL related functions to
973 * meet the rfc3161 requirement: "GeneralizedTime syntax can include
974 * fraction-of-second details".
975 */
976 if (precision > 0) {
977 /* To make things a bit harder, X.690 | ISO/IEC 8825-1 provides
978 the following restrictions for a DER-encoding, which OpenSSL
979 (specifically ASN1_GENERALIZEDTIME_check() function) doesn't
980 support:
981 "The encoding MUST terminate with a "Z" (which means "Zulu"
982 time). The decimal point element, if present, MUST be the
983 point option ".". The fractional-seconds elements,
984 if present, MUST omit all trailing 0's;
985 if the elements correspond to 0, they MUST be wholly
986 omitted, and the decimal point element also MUST be
987 omitted." */
988 (void) snprintf(usecstr, sizeof(usecstr), ".%06ld", usec);
989 /* truncate and trim trailing 0 */
990 usecstr[precision + 1] = '\0';
991 p = usecstr + strlen(usecstr) - 1;
992 while (p > usecstr && *p == '0')
993 *p-- = '\0';
994 /* if we've reached the beginning, delete the . too */
995 if (p == usecstr)
996 *p = '\0';
997
998 } else {
999 /* empty */
1000 usecstr[0] = '\0';
1001 }
1002 rv = snprintf(genTime_str, sizeof(genTime_str),
1003 "%04d%02d%02d%02d%02d%02d%sZ",
1004 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1005 tm->tm_hour, tm->tm_min, tm->tm_sec, usecstr);
1006 if (rv == -1 || rv >= sizeof(genTime_str))
1007 goto err;
1008
1009 /* Now call OpenSSL to check and set our genTime value */
1010 if (!asn1_time && !(asn1_time = ASN1_GENERALIZEDTIME_new()))
1011 goto err;
1012 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) {
1013 ASN1_GENERALIZEDTIME_free(asn1_time);
1014 goto err;
1015 }
1016
1017 return asn1_time;
1018
1019err:
1020 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME);
1021 return NULL;
1022}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-07 21:38:03 +0000