summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/ts/ts_rsp_sign.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/ts/ts_rsp_sign.c')
-rw-r--r--src/lib/libcrypto/ts/ts_rsp_sign.c982
1 files changed, 0 insertions, 982 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 e3101340c5..0000000000
--- a/src/lib/libcrypto/ts/ts_rsp_sign.c
+++ /dev/null
@@ -1,982 +0,0 @@
1/* $OpenBSD: ts_rsp_sign.c,v 1.35 2024/03/26 00:39:22 beck 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#include "evp_local.h"
69#include "ts_local.h"
70#include "x509_local.h"
71
72/* Private function declarations. */
73
74static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *);
75static int def_time_cb(struct TS_resp_ctx *, void *, time_t *sec, long *usec);
76static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *);
77
78static void TS_RESP_CTX_init(TS_RESP_CTX *ctx);
79static void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx);
80static int TS_RESP_check_request(TS_RESP_CTX *ctx);
81static ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx);
82static TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx,
83 ASN1_OBJECT *policy);
84static int TS_RESP_process_extensions(TS_RESP_CTX *ctx);
85static int TS_RESP_sign(TS_RESP_CTX *ctx);
86
87static ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert,
88 STACK_OF(X509) *certs);
89static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed);
90static int TS_TST_INFO_content_new(PKCS7 *p7);
91static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc);
92
93/* Default callbacks for response generation. */
94
95static ASN1_INTEGER *
96def_serial_cb(struct TS_resp_ctx *ctx, void *data)
97{
98 ASN1_INTEGER *serial;
99
100 if ((serial = ASN1_INTEGER_new()) == NULL)
101 goto err;
102 if (!ASN1_INTEGER_set(serial, 1))
103 goto err;
104
105 return serial;
106
107 err:
108 ASN1_INTEGER_free(serial);
109 TSerror(ERR_R_MALLOC_FAILURE);
110 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
111 "Error during serial number generation.");
112
113 return NULL;
114}
115
116/* Use the gettimeofday function call. */
117static int
118def_time_cb(struct TS_resp_ctx *ctx, void *data, time_t *sec, long *usec)
119{
120 struct timeval tv;
121
122 if (gettimeofday(&tv, NULL) != 0) {
123 TSerror(TS_R_TIME_SYSCALL_ERROR);
124 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
125 "Time is not available.");
126 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
127 return 0;
128 }
129 /* Return time to caller. */
130 *sec = tv.tv_sec;
131 *usec = tv.tv_usec;
132
133 return 1;
134}
135
136static int
137def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, void *data)
138{
139 /* No extensions are processed here. */
140 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
141 "Unsupported extension.");
142 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION);
143 return 0;
144}
145
146void
147TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data)
148{
149 ctx->time_cb = cb;
150 ctx->time_cb_data = data;
151}
152LCRYPTO_ALIAS(TS_RESP_CTX_set_time_cb);
153
154/* TS_RESP_CTX management functions. */
155
156TS_RESP_CTX *
157TS_RESP_CTX_new(void)
158{
159 TS_RESP_CTX *ctx;
160
161 if (!(ctx = calloc(1, sizeof(TS_RESP_CTX)))) {
162 TSerror(ERR_R_MALLOC_FAILURE);
163 return NULL;
164 }
165
166 /* Setting default callbacks. */
167 ctx->serial_cb = def_serial_cb;
168 ctx->time_cb = def_time_cb;
169 ctx->extension_cb = def_extension_cb;
170
171 return ctx;
172}
173LCRYPTO_ALIAS(TS_RESP_CTX_new);
174
175void
176TS_RESP_CTX_free(TS_RESP_CTX *ctx)
177{
178 if (!ctx)
179 return;
180
181 X509_free(ctx->signer_cert);
182 EVP_PKEY_free(ctx->signer_key);
183 sk_X509_pop_free(ctx->certs, X509_free);
184 sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free);
185 ASN1_OBJECT_free(ctx->default_policy);
186 sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */
187 ASN1_INTEGER_free(ctx->seconds);
188 ASN1_INTEGER_free(ctx->millis);
189 ASN1_INTEGER_free(ctx->micros);
190 free(ctx);
191}
192LCRYPTO_ALIAS(TS_RESP_CTX_free);
193
194int
195TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer)
196{
197 if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) {
198 TSerror(TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE);
199 return 0;
200 }
201 X509_free(ctx->signer_cert);
202 ctx->signer_cert = signer;
203 CRYPTO_add(&ctx->signer_cert->references, +1, CRYPTO_LOCK_X509);
204 return 1;
205}
206LCRYPTO_ALIAS(TS_RESP_CTX_set_signer_cert);
207
208int
209TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key)
210{
211 EVP_PKEY_free(ctx->signer_key);
212 ctx->signer_key = key;
213 CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY);
214
215 return 1;
216}
217LCRYPTO_ALIAS(TS_RESP_CTX_set_signer_key);
218
219int
220TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy)
221{
222 if (ctx->default_policy)
223 ASN1_OBJECT_free(ctx->default_policy);
224 if (!(ctx->default_policy = OBJ_dup(def_policy)))
225 goto err;
226 return 1;
227
228err:
229 TSerror(ERR_R_MALLOC_FAILURE);
230 return 0;
231}
232LCRYPTO_ALIAS(TS_RESP_CTX_set_def_policy);
233
234int
235TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs)
236{
237 int i;
238
239 if (ctx->certs) {
240 sk_X509_pop_free(ctx->certs, X509_free);
241 ctx->certs = NULL;
242 }
243 if (!certs)
244 return 1;
245 if (!(ctx->certs = sk_X509_dup(certs))) {
246 TSerror(ERR_R_MALLOC_FAILURE);
247 return 0;
248 }
249 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
250 X509 *cert = sk_X509_value(ctx->certs, i);
251 CRYPTO_add(&cert->references, +1, CRYPTO_LOCK_X509);
252 }
253
254 return 1;
255}
256LCRYPTO_ALIAS(TS_RESP_CTX_set_certs);
257
258int
259TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy)
260{
261 ASN1_OBJECT *copy = NULL;
262
263 /* Create new policy stack if necessary. */
264 if (!ctx->policies && !(ctx->policies = sk_ASN1_OBJECT_new_null()))
265 goto err;
266 if (!(copy = OBJ_dup(policy)))
267 goto err;
268 if (!sk_ASN1_OBJECT_push(ctx->policies, copy))
269 goto err;
270
271 return 1;
272
273err:
274 TSerror(ERR_R_MALLOC_FAILURE);
275 ASN1_OBJECT_free(copy);
276 return 0;
277}
278LCRYPTO_ALIAS(TS_RESP_CTX_add_policy);
279
280int
281TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md)
282{
283 /* Create new md stack if necessary. */
284 if (!ctx->mds && !(ctx->mds = sk_EVP_MD_new_null()))
285 goto err;
286 /* Add the shared md, no copy needed. */
287 if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md))
288 goto err;
289
290 return 1;
291
292err:
293 TSerror(ERR_R_MALLOC_FAILURE);
294 return 0;
295}
296LCRYPTO_ALIAS(TS_RESP_CTX_add_md);
297
298#define TS_RESP_CTX_accuracy_free(ctx) \
299 ASN1_INTEGER_free(ctx->seconds); \
300 ctx->seconds = NULL; \
301 ASN1_INTEGER_free(ctx->millis); \
302 ctx->millis = NULL; \
303 ASN1_INTEGER_free(ctx->micros); \
304 ctx->micros = NULL;
305
306int
307TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, int secs, int millis, int micros)
308{
309 TS_RESP_CTX_accuracy_free(ctx);
310 if (secs && (!(ctx->seconds = ASN1_INTEGER_new()) ||
311 !ASN1_INTEGER_set(ctx->seconds, secs)))
312 goto err;
313 if (millis && (!(ctx->millis = ASN1_INTEGER_new()) ||
314 !ASN1_INTEGER_set(ctx->millis, millis)))
315 goto err;
316 if (micros && (!(ctx->micros = ASN1_INTEGER_new()) ||
317 !ASN1_INTEGER_set(ctx->micros, micros)))
318 goto err;
319
320 return 1;
321
322err:
323 TS_RESP_CTX_accuracy_free(ctx);
324 TSerror(ERR_R_MALLOC_FAILURE);
325 return 0;
326}
327LCRYPTO_ALIAS(TS_RESP_CTX_set_accuracy);
328
329void
330TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags)
331{
332 ctx->flags |= flags;
333}
334LCRYPTO_ALIAS(TS_RESP_CTX_add_flags);
335
336void
337TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data)
338{
339 ctx->serial_cb = cb;
340 ctx->serial_cb_data = data;
341}
342LCRYPTO_ALIAS(TS_RESP_CTX_set_serial_cb);
343
344void
345TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, TS_extension_cb cb, void *data)
346{
347 ctx->extension_cb = cb;
348 ctx->extension_cb_data = data;
349}
350LCRYPTO_ALIAS(TS_RESP_CTX_set_extension_cb);
351
352int
353TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, int status, const char *text)
354{
355 TS_STATUS_INFO *si = NULL;
356 ASN1_UTF8STRING *utf8_text = NULL;
357 int ret = 0;
358
359 if (!(si = TS_STATUS_INFO_new()))
360 goto err;
361 if (!ASN1_INTEGER_set(si->status, status))
362 goto err;
363 if (text) {
364 if (!(utf8_text = ASN1_UTF8STRING_new()) ||
365 !ASN1_STRING_set(utf8_text, text, strlen(text)))
366 goto err;
367 if (!si->text && !(si->text = sk_ASN1_UTF8STRING_new_null()))
368 goto err;
369 if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text))
370 goto err;
371 utf8_text = NULL; /* Ownership is lost. */
372 }
373 if (!TS_RESP_set_status_info(ctx->response, si))
374 goto err;
375 ret = 1;
376
377err:
378 if (!ret)
379 TSerror(ERR_R_MALLOC_FAILURE);
380 TS_STATUS_INFO_free(si);
381 ASN1_UTF8STRING_free(utf8_text);
382 return ret;
383}
384LCRYPTO_ALIAS(TS_RESP_CTX_set_status_info);
385
386int
387TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, int status, const char *text)
388{
389 int ret = 1;
390 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
391
392 if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) {
393 /* Status has not been set, set it now. */
394 ret = TS_RESP_CTX_set_status_info(ctx, status, text);
395 }
396 return ret;
397}
398LCRYPTO_ALIAS(TS_RESP_CTX_set_status_info_cond);
399
400int
401TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure)
402{
403 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
404
405 if (!si->failure_info && !(si->failure_info = ASN1_BIT_STRING_new()))
406 goto err;
407 if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1))
408 goto err;
409 return 1;
410
411err:
412 TSerror(ERR_R_MALLOC_FAILURE);
413 return 0;
414}
415LCRYPTO_ALIAS(TS_RESP_CTX_add_failure_info);
416
417TS_REQ *
418TS_RESP_CTX_get_request(TS_RESP_CTX *ctx)
419{
420 return ctx->request;
421}
422LCRYPTO_ALIAS(TS_RESP_CTX_get_request);
423
424TS_TST_INFO *
425TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx)
426{
427 return ctx->tst_info;
428}
429LCRYPTO_ALIAS(TS_RESP_CTX_get_tst_info);
430
431int
432TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, unsigned precision)
433{
434 if (precision > 0)
435 return 0;
436 ctx->clock_precision_digits = precision;
437 return 1;
438}
439LCRYPTO_ALIAS(TS_RESP_CTX_set_clock_precision_digits);
440
441/* Main entry method of the response generation. */
442TS_RESP *
443TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio)
444{
445 ASN1_OBJECT *policy;
446 TS_RESP *response;
447 int result = 0;
448
449 TS_RESP_CTX_init(ctx);
450
451 /* Creating the response object. */
452 if (!(ctx->response = TS_RESP_new())) {
453 TSerror(ERR_R_MALLOC_FAILURE);
454 goto end;
455 }
456
457 /* Parsing DER request. */
458 if (!(ctx->request = d2i_TS_REQ_bio(req_bio, NULL))) {
459 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
460 "Bad request format or "
461 "system error.");
462 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
463 goto end;
464 }
465
466 /* Setting default status info. */
467 if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL))
468 goto end;
469
470 /* Checking the request format. */
471 if (!TS_RESP_check_request(ctx))
472 goto end;
473
474 /* Checking acceptable policies. */
475 if (!(policy = TS_RESP_get_policy(ctx)))
476 goto end;
477
478 /* Creating the TS_TST_INFO object. */
479 if (!(ctx->tst_info = TS_RESP_create_tst_info(ctx, policy)))
480 goto end;
481
482 /* Processing extensions. */
483 if (!TS_RESP_process_extensions(ctx))
484 goto end;
485
486 /* Generating the signature. */
487 if (!TS_RESP_sign(ctx))
488 goto end;
489
490 /* Everything was successful. */
491 result = 1;
492
493end:
494 if (!result) {
495 TSerror(TS_R_RESPONSE_SETUP_ERROR);
496 if (ctx->response != NULL) {
497 if (TS_RESP_CTX_set_status_info_cond(ctx,
498 TS_STATUS_REJECTION, "Error during response "
499 "generation.") == 0) {
500 TS_RESP_free(ctx->response);
501 ctx->response = NULL;
502 }
503 }
504 }
505 response = ctx->response;
506 ctx->response = NULL; /* Ownership will be returned to caller. */
507 TS_RESP_CTX_cleanup(ctx);
508 return response;
509}
510LCRYPTO_ALIAS(TS_RESP_create_response);
511
512/* Initializes the variable part of the context. */
513static void
514TS_RESP_CTX_init(TS_RESP_CTX *ctx)
515{
516 ctx->request = NULL;
517 ctx->response = NULL;
518 ctx->tst_info = NULL;
519}
520
521/* Cleans up the variable part of the context. */
522static void
523TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx)
524{
525 TS_REQ_free(ctx->request);
526 ctx->request = NULL;
527 TS_RESP_free(ctx->response);
528 ctx->response = NULL;
529 TS_TST_INFO_free(ctx->tst_info);
530 ctx->tst_info = NULL;
531}
532
533/* Checks the format and content of the request. */
534static int
535TS_RESP_check_request(TS_RESP_CTX *ctx)
536{
537 TS_REQ *request = ctx->request;
538 TS_MSG_IMPRINT *msg_imprint;
539 X509_ALGOR *md_alg;
540 int md_alg_id;
541 const ASN1_OCTET_STRING *digest;
542 EVP_MD *md = NULL;
543 int i;
544
545 /* Checking request version. */
546 if (TS_REQ_get_version(request) != 1) {
547 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
548 "Bad request version.");
549 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST);
550 return 0;
551 }
552
553 /* Checking message digest algorithm. */
554 msg_imprint = TS_REQ_get_msg_imprint(request);
555 md_alg = TS_MSG_IMPRINT_get_algo(msg_imprint);
556 md_alg_id = OBJ_obj2nid(md_alg->algorithm);
557 for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) {
558 EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i);
559 if (md_alg_id == EVP_MD_type(current_md))
560 md = current_md;
561 }
562 if (!md) {
563 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
564 "Message digest algorithm is "
565 "not supported.");
566 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
567 return 0;
568 }
569
570 /* No message digest takes parameter. */
571 if (md_alg->parameter &&
572 ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) {
573 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
574 "Superfluous message digest "
575 "parameter.");
576 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
577 return 0;
578 }
579 /* Checking message digest size. */
580 digest = TS_MSG_IMPRINT_get_msg(msg_imprint);
581 if (digest->length != EVP_MD_size(md)) {
582 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
583 "Bad message digest.");
584 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
585 return 0;
586 }
587
588 return 1;
589}
590
591/* Returns the TSA policy based on the requested and acceptable policies. */
592static ASN1_OBJECT *
593TS_RESP_get_policy(TS_RESP_CTX *ctx)
594{
595 ASN1_OBJECT *requested = TS_REQ_get_policy_id(ctx->request);
596 ASN1_OBJECT *policy = NULL;
597 int i;
598
599 if (ctx->default_policy == NULL) {
600 TSerror(TS_R_INVALID_NULL_POINTER);
601 return NULL;
602 }
603 /* Return the default policy if none is requested or the default is
604 requested. */
605 if (!requested || !OBJ_cmp(requested, ctx->default_policy))
606 policy = ctx->default_policy;
607
608 /* Check if the policy is acceptable. */
609 for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) {
610 ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i);
611 if (!OBJ_cmp(requested, current))
612 policy = current;
613 }
614 if (!policy) {
615 TSerror(TS_R_UNACCEPTABLE_POLICY);
616 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
617 "Requested policy is not "
618 "supported.");
619 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY);
620 }
621 return policy;
622}
623
624/* Creates the TS_TST_INFO object based on the settings of the context. */
625static TS_TST_INFO *
626TS_RESP_create_tst_info(TS_RESP_CTX *ctx, ASN1_OBJECT *policy)
627{
628 int result = 0;
629 TS_TST_INFO *tst_info = NULL;
630 ASN1_INTEGER *serial = NULL;
631 ASN1_GENERALIZEDTIME *asn1_time = NULL;
632 time_t sec;
633 long usec;
634 TS_ACCURACY *accuracy = NULL;
635 const ASN1_INTEGER *nonce;
636 GENERAL_NAME *tsa_name = NULL;
637
638 if (!(tst_info = TS_TST_INFO_new()))
639 goto end;
640 if (!TS_TST_INFO_set_version(tst_info, 1))
641 goto end;
642 if (!TS_TST_INFO_set_policy_id(tst_info, policy))
643 goto end;
644 if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint))
645 goto end;
646 if (!(serial = (*ctx->serial_cb)(ctx, ctx->serial_cb_data)) ||
647 !TS_TST_INFO_set_serial(tst_info, serial))
648 goto end;
649 if (!(*ctx->time_cb)(ctx, ctx->time_cb_data, &sec, &usec) ||
650 ((asn1_time = ASN1_GENERALIZEDTIME_set(NULL, sec)) == NULL) ||
651 !TS_TST_INFO_set_time(tst_info, asn1_time))
652 goto end;
653
654 /* Setting accuracy if needed. */
655 if ((ctx->seconds || ctx->millis || ctx->micros) &&
656 !(accuracy = TS_ACCURACY_new()))
657 goto end;
658
659 if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds))
660 goto end;
661 if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis))
662 goto end;
663 if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros))
664 goto end;
665 if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy))
666 goto end;
667
668 /* Setting ordering. */
669 if ((ctx->flags & TS_ORDERING) &&
670 !TS_TST_INFO_set_ordering(tst_info, 1))
671 goto end;
672
673 /* Setting nonce if needed. */
674 if ((nonce = TS_REQ_get_nonce(ctx->request)) != NULL &&
675 !TS_TST_INFO_set_nonce(tst_info, nonce))
676 goto end;
677
678 /* Setting TSA name to subject of signer certificate. */
679 if (ctx->flags & TS_TSA_NAME) {
680 if (!(tsa_name = GENERAL_NAME_new()))
681 goto end;
682 tsa_name->type = GEN_DIRNAME;
683 tsa_name->d.dirn =
684 X509_NAME_dup(X509_get_subject_name(ctx->signer_cert));
685 if (!tsa_name->d.dirn)
686 goto end;
687 if (!TS_TST_INFO_set_tsa(tst_info, tsa_name))
688 goto end;
689 }
690
691 result = 1;
692
693end:
694 if (!result) {
695 TS_TST_INFO_free(tst_info);
696 tst_info = NULL;
697 TSerror(TS_R_TST_INFO_SETUP_ERROR);
698 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
699 "Error during TSTInfo "
700 "generation.");
701 }
702 GENERAL_NAME_free(tsa_name);
703 TS_ACCURACY_free(accuracy);
704 ASN1_GENERALIZEDTIME_free(asn1_time);
705 ASN1_INTEGER_free(serial);
706
707 return tst_info;
708}
709
710/* Processing the extensions of the request. */
711static int
712TS_RESP_process_extensions(TS_RESP_CTX *ctx)
713{
714 STACK_OF(X509_EXTENSION) *exts = TS_REQ_get_exts(ctx->request);
715 int i;
716 int ok = 1;
717
718 for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) {
719 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
720 /* XXXXX The last argument was previously
721 (void *)ctx->extension_cb, but ISO C doesn't permit
722 converting a function pointer to void *. For lack of
723 better information, I'm placing a NULL there instead.
724 The callback can pick its own address out from the ctx
725 anyway...
726 */
727 ok = (*ctx->extension_cb)(ctx, ext, NULL);
728 }
729
730 return ok;
731}
732
733/* Functions for signing the TS_TST_INFO structure of the context. */
734static int
735TS_RESP_sign(TS_RESP_CTX *ctx)
736{
737 int ret = 0;
738 PKCS7 *p7 = NULL;
739 PKCS7_SIGNER_INFO *si;
740 STACK_OF(X509) *certs; /* Certificates to include in sc. */
741 ESS_SIGNING_CERT *sc = NULL;
742 ASN1_OBJECT *oid;
743 BIO *p7bio = NULL;
744 int i;
745
746 /* Check if signcert and pkey match. */
747 if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) {
748 TSerror(TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
749 goto err;
750 }
751
752 /* Create a new PKCS7 signed object. */
753 if (!(p7 = PKCS7_new())) {
754 TSerror(ERR_R_MALLOC_FAILURE);
755 goto err;
756 }
757 if (!PKCS7_set_type(p7, NID_pkcs7_signed))
758 goto err;
759
760 /* Force SignedData version to be 3 instead of the default 1. */
761 if (!ASN1_INTEGER_set(p7->d.sign->version, 3))
762 goto err;
763
764 /* Add signer certificate and optional certificate chain. */
765 if (TS_REQ_get_cert_req(ctx->request)) {
766 PKCS7_add_certificate(p7, ctx->signer_cert);
767 if (ctx->certs) {
768 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
769 X509 *cert = sk_X509_value(ctx->certs, i);
770 PKCS7_add_certificate(p7, cert);
771 }
772 }
773 }
774
775 /* Add a new signer info. */
776 if (!(si = PKCS7_add_signature(p7, ctx->signer_cert,
777 ctx->signer_key, EVP_sha1()))) {
778 TSerror(TS_R_PKCS7_ADD_SIGNATURE_ERROR);
779 goto err;
780 }
781
782 /* Add content type signed attribute to the signer info. */
783 oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
784 if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
785 V_ASN1_OBJECT, oid)) {
786 TSerror(TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR);
787 goto err;
788 }
789
790 /* Create the ESS SigningCertificate attribute which contains
791 the signer certificate id and optionally the certificate chain. */
792 certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL;
793 if (!(sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs)))
794 goto err;
795
796 /* Add SigningCertificate signed attribute to the signer info. */
797 if (!ESS_add_signing_cert(si, sc)) {
798 TSerror(TS_R_ESS_ADD_SIGNING_CERT_ERROR);
799 goto err;
800 }
801
802 /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */
803 if (!TS_TST_INFO_content_new(p7))
804 goto err;
805
806 /* Add the DER encoded tst_info to the PKCS7 structure. */
807 if (!(p7bio = PKCS7_dataInit(p7, NULL))) {
808 TSerror(ERR_R_MALLOC_FAILURE);
809 goto err;
810 }
811
812 /* Convert tst_info to DER. */
813 if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) {
814 TSerror(TS_R_TS_DATASIGN);
815 goto err;
816 }
817
818 /* Create the signature and add it to the signer info. */
819 if (!PKCS7_dataFinal(p7, p7bio)) {
820 TSerror(TS_R_TS_DATASIGN);
821 goto err;
822 }
823
824 /* Set new PKCS7 and TST_INFO objects. */
825 TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info);
826 p7 = NULL; /* Ownership is lost. */
827 ctx->tst_info = NULL; /* Ownership is lost. */
828
829 ret = 1;
830
831err:
832 if (!ret)
833 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
834 "Error during signature "
835 "generation.");
836 BIO_free_all(p7bio);
837 ESS_SIGNING_CERT_free(sc);
838 PKCS7_free(p7);
839 return ret;
840}
841
842static ESS_SIGNING_CERT *
843ESS_SIGNING_CERT_new_init(X509 *signcert, STACK_OF(X509) *certs)
844{
845 ESS_CERT_ID *cid;
846 ESS_SIGNING_CERT *sc = NULL;
847 int i;
848
849 /* Creating the ESS_CERT_ID stack. */
850 if (!(sc = ESS_SIGNING_CERT_new()))
851 goto err;
852 if (!sc->cert_ids && !(sc->cert_ids = sk_ESS_CERT_ID_new_null()))
853 goto err;
854
855 /* Adding the signing certificate id. */
856 if (!(cid = ESS_CERT_ID_new_init(signcert, 0)) ||
857 !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
858 goto err;
859 /* Adding the certificate chain ids. */
860 for (i = 0; i < sk_X509_num(certs); ++i) {
861 X509 *cert = sk_X509_value(certs, i);
862 if (!(cid = ESS_CERT_ID_new_init(cert, 1)) ||
863 !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
864 goto err;
865 }
866
867 return sc;
868
869err:
870 ESS_SIGNING_CERT_free(sc);
871 TSerror(ERR_R_MALLOC_FAILURE);
872 return NULL;
873}
874
875static ESS_CERT_ID *
876ESS_CERT_ID_new_init(X509 *cert, int issuer_needed)
877{
878 ESS_CERT_ID *cid = NULL;
879 GENERAL_NAME *name = NULL;
880 unsigned char cert_hash[TS_HASH_LEN];
881
882 /* Recompute SHA1 hash of certificate if necessary (side effect). */
883 X509_check_purpose(cert, -1, 0);
884
885 if (!(cid = ESS_CERT_ID_new()))
886 goto err;
887
888 if (!X509_digest(cert, TS_HASH_EVP, cert_hash, NULL))
889 goto err;
890
891 if (!ASN1_OCTET_STRING_set(cid->hash, cert_hash, sizeof(cert_hash)))
892 goto err;
893
894 /* Setting the issuer/serial if requested. */
895 if (issuer_needed) {
896 /* Creating issuer/serial structure. */
897 if (!cid->issuer_serial &&
898 !(cid->issuer_serial = ESS_ISSUER_SERIAL_new()))
899 goto err;
900 /* Creating general name from the certificate issuer. */
901 if (!(name = GENERAL_NAME_new()))
902 goto err;
903 name->type = GEN_DIRNAME;
904 if ((name->d.dirn = X509_NAME_dup(X509_get_issuer_name(cert))) == NULL)
905 goto err;
906 if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name))
907 goto err;
908 name = NULL; /* Ownership is lost. */
909 /* Setting the serial number. */
910 ASN1_INTEGER_free(cid->issuer_serial->serial);
911 if (!(cid->issuer_serial->serial =
912 ASN1_INTEGER_dup(X509_get_serialNumber(cert))))
913 goto err;
914 }
915
916 return cid;
917
918err:
919 GENERAL_NAME_free(name);
920 ESS_CERT_ID_free(cid);
921 TSerror(ERR_R_MALLOC_FAILURE);
922 return NULL;
923}
924
925static int
926TS_TST_INFO_content_new(PKCS7 *p7)
927{
928 PKCS7 *ret = NULL;
929 ASN1_OCTET_STRING *octet_string = NULL;
930
931 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
932 if (!(ret = PKCS7_new()))
933 goto err;
934 if (!(ret->d.other = ASN1_TYPE_new()))
935 goto err;
936 ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
937 if (!(octet_string = ASN1_OCTET_STRING_new()))
938 goto err;
939 ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string);
940 octet_string = NULL;
941
942 /* Add encapsulated content to signed PKCS7 structure. */
943 if (!PKCS7_set_content(p7, ret))
944 goto err;
945
946 return 1;
947
948err:
949 ASN1_OCTET_STRING_free(octet_string);
950 PKCS7_free(ret);
951 return 0;
952}
953
954static int
955ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc)
956{
957 ASN1_STRING *seq = NULL;
958 unsigned char *p, *pp = NULL;
959 int len;
960
961 len = i2d_ESS_SIGNING_CERT(sc, NULL);
962 if (!(pp = malloc(len))) {
963 TSerror(ERR_R_MALLOC_FAILURE);
964 goto err;
965 }
966 p = pp;
967 i2d_ESS_SIGNING_CERT(sc, &p);
968 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
969 TSerror(ERR_R_MALLOC_FAILURE);
970 goto err;
971 }
972 free(pp);
973 pp = NULL;
974 return PKCS7_add_signed_attribute(si,
975 NID_id_smime_aa_signingCertificate, V_ASN1_SEQUENCE, seq);
976
977err:
978 ASN1_STRING_free(seq);
979 free(pp);
980
981 return 0;
982}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-06 16:48:51 +0000