1 /* crypto/ts/ts_resp_sign.c */
3 * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #if defined(OPENSSL_SYS_UNIX)
63 # include <sys/time.h>
66 #include <openssl/objects.h>
67 #include <openssl/ts.h>
68 #include <openssl/pkcs7.h>
70 /* Private function declarations. */
72 static ASN1_INTEGER
*def_serial_cb(struct TS_resp_ctx
*, void *);
73 static int def_time_cb(struct TS_resp_ctx
*, void *, long *sec
, long *usec
);
74 static int def_extension_cb(struct TS_resp_ctx
*, X509_EXTENSION
*, void *);
76 static void TS_RESP_CTX_init(TS_RESP_CTX
*ctx
);
77 static void TS_RESP_CTX_cleanup(TS_RESP_CTX
*ctx
);
78 static int TS_RESP_check_request(TS_RESP_CTX
*ctx
);
79 static ASN1_OBJECT
*TS_RESP_get_policy(TS_RESP_CTX
*ctx
);
80 static TS_TST_INFO
*TS_RESP_create_tst_info(TS_RESP_CTX
*ctx
,
82 static int TS_RESP_process_extensions(TS_RESP_CTX
*ctx
);
83 static int TS_RESP_sign(TS_RESP_CTX
*ctx
);
85 static ESS_SIGNING_CERT
*ESS_SIGNING_CERT_new_init(X509
*signcert
,
86 STACK_OF(X509
) *certs
);
87 static ESS_CERT_ID
*ESS_CERT_ID_new_init(X509
*cert
, int issuer_needed
);
88 static int TS_TST_INFO_content_new(PKCS7
*p7
);
89 static int ESS_add_signing_cert(PKCS7_SIGNER_INFO
*si
, ESS_SIGNING_CERT
*sc
);
91 static ASN1_GENERALIZEDTIME
92 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME
*, long, long,
95 /* Default callbacks for response generation. */
97 static ASN1_INTEGER
*def_serial_cb(struct TS_resp_ctx
*ctx
, void *data
)
99 ASN1_INTEGER
*serial
= ASN1_INTEGER_new();
102 if (!ASN1_INTEGER_set(serial
, 1))
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.");
112 #if defined(OPENSSL_SYS_UNIX)
114 /* Use the gettimeofday function call. */
115 static int def_time_cb(struct TS_resp_ctx
*ctx
, void *data
,
116 long *sec
, long *usec
)
119 if (gettimeofday(&tv
, NULL
) != 0) {
120 TSerr(TS_F_DEF_TIME_CB
, TS_R_TIME_SYSCALL_ERROR
);
121 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
122 "Time is not available.");
123 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_TIME_NOT_AVAILABLE
);
126 /* Return time to caller. */
135 /* Use the time function call that provides only seconds precision. */
136 static int def_time_cb(struct TS_resp_ctx
*ctx
, void *data
,
137 long *sec
, long *usec
)
140 if (time(&t
) == (time_t)-1) {
141 TSerr(TS_F_DEF_TIME_CB
, TS_R_TIME_SYSCALL_ERROR
);
142 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
143 "Time is not available.");
144 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_TIME_NOT_AVAILABLE
);
147 /* Return time to caller, only second precision. */
156 static int def_extension_cb(struct TS_resp_ctx
*ctx
, X509_EXTENSION
*ext
,
159 /* No extensions are processed here. */
160 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
161 "Unsupported extension.");
162 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_UNACCEPTED_EXTENSION
);
166 /* TS_RESP_CTX management functions. */
168 TS_RESP_CTX
*TS_RESP_CTX_new()
172 if (!(ctx
= (TS_RESP_CTX
*)OPENSSL_malloc(sizeof(TS_RESP_CTX
)))) {
173 TSerr(TS_F_TS_RESP_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
176 memset(ctx
, 0, sizeof(TS_RESP_CTX
));
178 /* Setting default callbacks. */
179 ctx
->serial_cb
= def_serial_cb
;
180 ctx
->time_cb
= def_time_cb
;
181 ctx
->extension_cb
= def_extension_cb
;
186 void TS_RESP_CTX_free(TS_RESP_CTX
*ctx
)
191 X509_free(ctx
->signer_cert
);
192 EVP_PKEY_free(ctx
->signer_key
);
193 sk_X509_pop_free(ctx
->certs
, X509_free
);
194 sk_ASN1_OBJECT_pop_free(ctx
->policies
, ASN1_OBJECT_free
);
195 ASN1_OBJECT_free(ctx
->default_policy
);
196 sk_EVP_MD_free(ctx
->mds
); /* No EVP_MD_free method exists. */
197 ASN1_INTEGER_free(ctx
->seconds
);
198 ASN1_INTEGER_free(ctx
->millis
);
199 ASN1_INTEGER_free(ctx
->micros
);
203 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX
*ctx
, X509
*signer
)
205 if (X509_check_purpose(signer
, X509_PURPOSE_TIMESTAMP_SIGN
, 0) != 1) {
206 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT
,
207 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE
);
210 if (ctx
->signer_cert
)
211 X509_free(ctx
->signer_cert
);
212 ctx
->signer_cert
= signer
;
213 CRYPTO_add(&ctx
->signer_cert
->references
, +1, CRYPTO_LOCK_X509
);
217 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX
*ctx
, EVP_PKEY
*key
)
220 EVP_PKEY_free(ctx
->signer_key
);
221 ctx
->signer_key
= key
;
222 CRYPTO_add(&ctx
->signer_key
->references
, +1, CRYPTO_LOCK_EVP_PKEY
);
227 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX
*ctx
, ASN1_OBJECT
*def_policy
)
229 if (ctx
->default_policy
)
230 ASN1_OBJECT_free(ctx
->default_policy
);
231 if (!(ctx
->default_policy
= OBJ_dup(def_policy
)))
235 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY
, ERR_R_MALLOC_FAILURE
);
239 int TS_RESP_CTX_set_certs(TS_RESP_CTX
*ctx
, STACK_OF(X509
) *certs
)
244 sk_X509_pop_free(ctx
->certs
, X509_free
);
249 if (!(ctx
->certs
= sk_X509_dup(certs
))) {
250 TSerr(TS_F_TS_RESP_CTX_SET_CERTS
, ERR_R_MALLOC_FAILURE
);
253 for (i
= 0; i
< sk_X509_num(ctx
->certs
); ++i
) {
254 X509
*cert
= sk_X509_value(ctx
->certs
, i
);
255 CRYPTO_add(&cert
->references
, +1, CRYPTO_LOCK_X509
);
261 int TS_RESP_CTX_add_policy(TS_RESP_CTX
*ctx
, ASN1_OBJECT
*policy
)
263 ASN1_OBJECT
*copy
= NULL
;
265 /* Create new policy stack if necessary. */
266 if (!ctx
->policies
&& !(ctx
->policies
= sk_ASN1_OBJECT_new_null()))
268 if (!(copy
= OBJ_dup(policy
)))
270 if (!sk_ASN1_OBJECT_push(ctx
->policies
, copy
))
275 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY
, ERR_R_MALLOC_FAILURE
);
276 ASN1_OBJECT_free(copy
);
280 int TS_RESP_CTX_add_md(TS_RESP_CTX
*ctx
, const EVP_MD
*md
)
282 /* Create new md stack if necessary. */
283 if (!ctx
->mds
&& !(ctx
->mds
= sk_EVP_MD_new_null()))
285 /* Add the shared md, no copy needed. */
286 if (!sk_EVP_MD_push(ctx
->mds
, (EVP_MD
*)md
))
291 TSerr(TS_F_TS_RESP_CTX_ADD_MD
, ERR_R_MALLOC_FAILURE
);
295 #define TS_RESP_CTX_accuracy_free(ctx) \
296 ASN1_INTEGER_free(ctx->seconds); \
297 ctx->seconds = NULL; \
298 ASN1_INTEGER_free(ctx->millis); \
299 ctx->millis = NULL; \
300 ASN1_INTEGER_free(ctx->micros); \
303 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX
*ctx
,
304 int secs
, int millis
, int micros
)
307 TS_RESP_CTX_accuracy_free(ctx
);
308 if (secs
&& (!(ctx
->seconds
= ASN1_INTEGER_new())
309 || !ASN1_INTEGER_set(ctx
->seconds
, secs
)))
311 if (millis
&& (!(ctx
->millis
= ASN1_INTEGER_new())
312 || !ASN1_INTEGER_set(ctx
->millis
, millis
)))
314 if (micros
&& (!(ctx
->micros
= ASN1_INTEGER_new())
315 || !ASN1_INTEGER_set(ctx
->micros
, micros
)))
320 TS_RESP_CTX_accuracy_free(ctx
);
321 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY
, ERR_R_MALLOC_FAILURE
);
325 void TS_RESP_CTX_add_flags(TS_RESP_CTX
*ctx
, int flags
)
330 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX
*ctx
, TS_serial_cb cb
, void *data
)
333 ctx
->serial_cb_data
= data
;
336 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX
*ctx
, TS_time_cb cb
, void *data
)
339 ctx
->time_cb_data
= data
;
342 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX
*ctx
,
343 TS_extension_cb cb
, void *data
)
345 ctx
->extension_cb
= cb
;
346 ctx
->extension_cb_data
= data
;
349 int TS_RESP_CTX_set_status_info(TS_RESP_CTX
*ctx
,
350 int status
, const char *text
)
352 TS_STATUS_INFO
*si
= NULL
;
353 ASN1_UTF8STRING
*utf8_text
= NULL
;
356 if (!(si
= TS_STATUS_INFO_new()))
358 if (!ASN1_INTEGER_set(si
->status
, status
))
361 if (!(utf8_text
= ASN1_UTF8STRING_new())
362 || !ASN1_STRING_set(utf8_text
, text
, strlen(text
)))
364 if (!si
->text
&& !(si
->text
= sk_ASN1_UTF8STRING_new_null()))
366 if (!sk_ASN1_UTF8STRING_push(si
->text
, utf8_text
))
368 utf8_text
= NULL
; /* Ownership is lost. */
370 if (!TS_RESP_set_status_info(ctx
->response
, si
))
375 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO
, ERR_R_MALLOC_FAILURE
);
376 TS_STATUS_INFO_free(si
);
377 ASN1_UTF8STRING_free(utf8_text
);
381 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX
*ctx
,
382 int status
, const char *text
)
385 TS_STATUS_INFO
*si
= TS_RESP_get_status_info(ctx
->response
);
387 if (ASN1_INTEGER_get(si
->status
) == TS_STATUS_GRANTED
) {
388 /* Status has not been set, set it now. */
389 ret
= TS_RESP_CTX_set_status_info(ctx
, status
, text
);
394 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX
*ctx
, int failure
)
396 TS_STATUS_INFO
*si
= TS_RESP_get_status_info(ctx
->response
);
397 if (!si
->failure_info
&& !(si
->failure_info
= ASN1_BIT_STRING_new()))
399 if (!ASN1_BIT_STRING_set_bit(si
->failure_info
, failure
, 1))
403 TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO
, ERR_R_MALLOC_FAILURE
);
407 TS_REQ
*TS_RESP_CTX_get_request(TS_RESP_CTX
*ctx
)
412 TS_TST_INFO
*TS_RESP_CTX_get_tst_info(TS_RESP_CTX
*ctx
)
414 return ctx
->tst_info
;
417 int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX
*ctx
,
420 if (precision
> TS_MAX_CLOCK_PRECISION_DIGITS
)
422 ctx
->clock_precision_digits
= precision
;
426 /* Main entry method of the response generation. */
427 TS_RESP
*TS_RESP_create_response(TS_RESP_CTX
*ctx
, BIO
*req_bio
)
433 TS_RESP_CTX_init(ctx
);
435 /* Creating the response object. */
436 if (!(ctx
->response
= TS_RESP_new())) {
437 TSerr(TS_F_TS_RESP_CREATE_RESPONSE
, ERR_R_MALLOC_FAILURE
);
441 /* Parsing DER request. */
442 if (!(ctx
->request
= d2i_TS_REQ_bio(req_bio
, NULL
))) {
443 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
444 "Bad request format or " "system error.");
445 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_DATA_FORMAT
);
449 /* Setting default status info. */
450 if (!TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_GRANTED
, NULL
))
453 /* Checking the request format. */
454 if (!TS_RESP_check_request(ctx
))
457 /* Checking acceptable policies. */
458 if (!(policy
= TS_RESP_get_policy(ctx
)))
461 /* Creating the TS_TST_INFO object. */
462 if (!(ctx
->tst_info
= TS_RESP_create_tst_info(ctx
, policy
)))
465 /* Processing extensions. */
466 if (!TS_RESP_process_extensions(ctx
))
469 /* Generating the signature. */
470 if (!TS_RESP_sign(ctx
))
473 /* Everything was successful. */
477 TSerr(TS_F_TS_RESP_CREATE_RESPONSE
, TS_R_RESPONSE_SETUP_ERROR
);
478 if (ctx
->response
!= NULL
) {
479 if (TS_RESP_CTX_set_status_info_cond(ctx
,
481 "Error during response "
482 "generation.") == 0) {
483 TS_RESP_free(ctx
->response
);
484 ctx
->response
= NULL
;
488 response
= ctx
->response
;
489 ctx
->response
= NULL
; /* Ownership will be returned to caller. */
490 TS_RESP_CTX_cleanup(ctx
);
494 /* Initializes the variable part of the context. */
495 static void TS_RESP_CTX_init(TS_RESP_CTX
*ctx
)
498 ctx
->response
= NULL
;
499 ctx
->tst_info
= NULL
;
502 /* Cleans up the variable part of the context. */
503 static void TS_RESP_CTX_cleanup(TS_RESP_CTX
*ctx
)
505 TS_REQ_free(ctx
->request
);
507 TS_RESP_free(ctx
->response
);
508 ctx
->response
= NULL
;
509 TS_TST_INFO_free(ctx
->tst_info
);
510 ctx
->tst_info
= NULL
;
513 /* Checks the format and content of the request. */
514 static int TS_RESP_check_request(TS_RESP_CTX
*ctx
)
516 TS_REQ
*request
= ctx
->request
;
517 TS_MSG_IMPRINT
*msg_imprint
;
520 const ASN1_OCTET_STRING
*digest
;
524 /* Checking request version. */
525 if (TS_REQ_get_version(request
) != 1) {
526 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
527 "Bad request version.");
528 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_REQUEST
);
532 /* Checking message digest algorithm. */
533 msg_imprint
= TS_REQ_get_msg_imprint(request
);
534 md_alg
= TS_MSG_IMPRINT_get_algo(msg_imprint
);
535 md_alg_id
= OBJ_obj2nid(md_alg
->algorithm
);
536 for (i
= 0; !md
&& i
< sk_EVP_MD_num(ctx
->mds
); ++i
) {
537 EVP_MD
*current_md
= sk_EVP_MD_value(ctx
->mds
, i
);
538 if (md_alg_id
== EVP_MD_type(current_md
))
542 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
543 "Message digest algorithm is "
545 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_ALG
);
549 /* No message digest takes parameter. */
550 if (md_alg
->parameter
&& ASN1_TYPE_get(md_alg
->parameter
) != V_ASN1_NULL
) {
551 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
552 "Superfluous message digest "
554 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_ALG
);
557 /* Checking message digest size. */
558 digest
= TS_MSG_IMPRINT_get_msg(msg_imprint
);
559 if (digest
->length
!= EVP_MD_size(md
)) {
560 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
561 "Bad message digest.");
562 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_DATA_FORMAT
);
569 /* Returns the TSA policy based on the requested and acceptable policies. */
570 static ASN1_OBJECT
*TS_RESP_get_policy(TS_RESP_CTX
*ctx
)
572 ASN1_OBJECT
*requested
= TS_REQ_get_policy_id(ctx
->request
);
573 ASN1_OBJECT
*policy
= NULL
;
576 if (ctx
->default_policy
== NULL
) {
577 TSerr(TS_F_TS_RESP_GET_POLICY
, TS_R_INVALID_NULL_POINTER
);
581 * Return the default policy if none is requested or the default is
584 if (!requested
|| !OBJ_cmp(requested
, ctx
->default_policy
))
585 policy
= ctx
->default_policy
;
587 /* Check if the policy is acceptable. */
588 for (i
= 0; !policy
&& i
< sk_ASN1_OBJECT_num(ctx
->policies
); ++i
) {
589 ASN1_OBJECT
*current
= sk_ASN1_OBJECT_value(ctx
->policies
, i
);
590 if (!OBJ_cmp(requested
, current
))
594 TSerr(TS_F_TS_RESP_GET_POLICY
, TS_R_UNACCEPTABLE_POLICY
);
595 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
596 "Requested policy is not " "supported.");
597 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_UNACCEPTED_POLICY
);
602 /* Creates the TS_TST_INFO object based on the settings of the context. */
603 static TS_TST_INFO
*TS_RESP_create_tst_info(TS_RESP_CTX
*ctx
,
607 TS_TST_INFO
*tst_info
= NULL
;
608 ASN1_INTEGER
*serial
= NULL
;
609 ASN1_GENERALIZEDTIME
*asn1_time
= NULL
;
611 TS_ACCURACY
*accuracy
= NULL
;
612 const ASN1_INTEGER
*nonce
;
613 GENERAL_NAME
*tsa_name
= NULL
;
615 if (!(tst_info
= TS_TST_INFO_new()))
617 if (!TS_TST_INFO_set_version(tst_info
, 1))
619 if (!TS_TST_INFO_set_policy_id(tst_info
, policy
))
621 if (!TS_TST_INFO_set_msg_imprint(tst_info
, ctx
->request
->msg_imprint
))
623 if (!(serial
= (*ctx
->serial_cb
) (ctx
, ctx
->serial_cb_data
))
624 || !TS_TST_INFO_set_serial(tst_info
, serial
))
626 if (!(*ctx
->time_cb
) (ctx
, ctx
->time_cb_data
, &sec
, &usec
)
627 || !(asn1_time
= TS_RESP_set_genTime_with_precision(NULL
,
629 ctx
->clock_precision_digits
))
630 || !TS_TST_INFO_set_time(tst_info
, asn1_time
))
633 /* Setting accuracy if needed. */
634 if ((ctx
->seconds
|| ctx
->millis
|| ctx
->micros
)
635 && !(accuracy
= TS_ACCURACY_new()))
638 if (ctx
->seconds
&& !TS_ACCURACY_set_seconds(accuracy
, ctx
->seconds
))
640 if (ctx
->millis
&& !TS_ACCURACY_set_millis(accuracy
, ctx
->millis
))
642 if (ctx
->micros
&& !TS_ACCURACY_set_micros(accuracy
, ctx
->micros
))
644 if (accuracy
&& !TS_TST_INFO_set_accuracy(tst_info
, accuracy
))
647 /* Setting ordering. */
648 if ((ctx
->flags
& TS_ORDERING
)
649 && !TS_TST_INFO_set_ordering(tst_info
, 1))
652 /* Setting nonce if needed. */
653 if ((nonce
= TS_REQ_get_nonce(ctx
->request
)) != NULL
654 && !TS_TST_INFO_set_nonce(tst_info
, nonce
))
657 /* Setting TSA name to subject of signer certificate. */
658 if (ctx
->flags
& TS_TSA_NAME
) {
659 if (!(tsa_name
= GENERAL_NAME_new()))
661 tsa_name
->type
= GEN_DIRNAME
;
663 X509_NAME_dup(ctx
->signer_cert
->cert_info
->subject
);
664 if (!tsa_name
->d
.dirn
)
666 if (!TS_TST_INFO_set_tsa(tst_info
, tsa_name
))
673 TS_TST_INFO_free(tst_info
);
675 TSerr(TS_F_TS_RESP_CREATE_TST_INFO
, TS_R_TST_INFO_SETUP_ERROR
);
676 TS_RESP_CTX_set_status_info_cond(ctx
, TS_STATUS_REJECTION
,
677 "Error during TSTInfo "
680 GENERAL_NAME_free(tsa_name
);
681 TS_ACCURACY_free(accuracy
);
682 ASN1_GENERALIZEDTIME_free(asn1_time
);
683 ASN1_INTEGER_free(serial
);
688 /* Processing the extensions of the request. */
689 static int TS_RESP_process_extensions(TS_RESP_CTX
*ctx
)
691 STACK_OF(X509_EXTENSION
) *exts
= TS_REQ_get_exts(ctx
->request
);
695 for (i
= 0; ok
&& i
< sk_X509_EXTENSION_num(exts
); ++i
) {
696 X509_EXTENSION
*ext
= sk_X509_EXTENSION_value(exts
, i
);
698 * XXXXX The last argument was previously (void *)ctx->extension_cb,
699 * but ISO C doesn't permit converting a function pointer to void *.
700 * For lack of better information, I'm placing a NULL there instead.
701 * The callback can pick its own address out from the ctx anyway...
703 ok
= (*ctx
->extension_cb
) (ctx
, ext
, NULL
);
709 /* Functions for signing the TS_TST_INFO structure of the context. */
710 static int TS_RESP_sign(TS_RESP_CTX
*ctx
)
714 PKCS7_SIGNER_INFO
*si
;
715 STACK_OF(X509
) *certs
; /* Certificates to include in sc. */
716 ESS_SIGNING_CERT
*sc
= NULL
;
721 /* Check if signcert and pkey match. */
722 if (!X509_check_private_key(ctx
->signer_cert
, ctx
->signer_key
)) {
723 TSerr(TS_F_TS_RESP_SIGN
, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
727 /* Create a new PKCS7 signed object. */
728 if (!(p7
= PKCS7_new())) {
729 TSerr(TS_F_TS_RESP_SIGN
, ERR_R_MALLOC_FAILURE
);
732 if (!PKCS7_set_type(p7
, NID_pkcs7_signed
))
735 /* Force SignedData version to be 3 instead of the default 1. */
736 if (!ASN1_INTEGER_set(p7
->d
.sign
->version
, 3))
739 /* Add signer certificate and optional certificate chain. */
740 if (TS_REQ_get_cert_req(ctx
->request
)) {
741 PKCS7_add_certificate(p7
, ctx
->signer_cert
);
743 for (i
= 0; i
< sk_X509_num(ctx
->certs
); ++i
) {
744 X509
*cert
= sk_X509_value(ctx
->certs
, i
);
745 PKCS7_add_certificate(p7
, cert
);
750 /* Add a new signer info. */
751 if (!(si
= PKCS7_add_signature(p7
, ctx
->signer_cert
,
752 ctx
->signer_key
, EVP_sha1()))) {
753 TSerr(TS_F_TS_RESP_SIGN
, TS_R_PKCS7_ADD_SIGNATURE_ERROR
);
757 /* Add content type signed attribute to the signer info. */
758 oid
= OBJ_nid2obj(NID_id_smime_ct_TSTInfo
);
759 if (!PKCS7_add_signed_attribute(si
, NID_pkcs9_contentType
,
760 V_ASN1_OBJECT
, oid
)) {
761 TSerr(TS_F_TS_RESP_SIGN
, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR
);
766 * Create the ESS SigningCertificate attribute which contains the signer
767 * certificate id and optionally the certificate chain.
769 certs
= ctx
->flags
& TS_ESS_CERT_ID_CHAIN
? ctx
->certs
: NULL
;
770 if (!(sc
= ESS_SIGNING_CERT_new_init(ctx
->signer_cert
, certs
)))
773 /* Add SigningCertificate signed attribute to the signer info. */
774 if (!ESS_add_signing_cert(si
, sc
)) {
775 TSerr(TS_F_TS_RESP_SIGN
, TS_R_ESS_ADD_SIGNING_CERT_ERROR
);
779 /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */
780 if (!TS_TST_INFO_content_new(p7
))
783 /* Add the DER encoded tst_info to the PKCS7 structure. */
784 if (!(p7bio
= PKCS7_dataInit(p7
, NULL
))) {
785 TSerr(TS_F_TS_RESP_SIGN
, ERR_R_MALLOC_FAILURE
);
789 /* Convert tst_info to DER. */
790 if (!i2d_TS_TST_INFO_bio(p7bio
, ctx
->tst_info
)) {
791 TSerr(TS_F_TS_RESP_SIGN
, TS_R_TS_DATASIGN
);
795 /* Create the signature and add it to the signer info. */
796 if (!PKCS7_dataFinal(p7
, p7bio
)) {
797 TSerr(TS_F_TS_RESP_SIGN
, TS_R_TS_DATASIGN
);
801 /* Set new PKCS7 and TST_INFO objects. */
802 TS_RESP_set_tst_info(ctx
->response
, p7
, ctx
->tst_info
);
803 p7
= NULL
; /* Ownership is lost. */
804 ctx
->tst_info
= NULL
; /* Ownership is lost. */
809 TS_RESP_CTX_set_status_info_cond(ctx
, TS_STATUS_REJECTION
,
810 "Error during signature "
813 ESS_SIGNING_CERT_free(sc
);
818 static ESS_SIGNING_CERT
*ESS_SIGNING_CERT_new_init(X509
*signcert
,
819 STACK_OF(X509
) *certs
)
822 ESS_SIGNING_CERT
*sc
= NULL
;
825 /* Creating the ESS_CERT_ID stack. */
826 if (!(sc
= ESS_SIGNING_CERT_new()))
828 if (!sc
->cert_ids
&& !(sc
->cert_ids
= sk_ESS_CERT_ID_new_null()))
831 /* Adding the signing certificate id. */
832 if (!(cid
= ESS_CERT_ID_new_init(signcert
, 0))
833 || !sk_ESS_CERT_ID_push(sc
->cert_ids
, cid
))
835 /* Adding the certificate chain ids. */
836 for (i
= 0; i
< sk_X509_num(certs
); ++i
) {
837 X509
*cert
= sk_X509_value(certs
, i
);
838 if (!(cid
= ESS_CERT_ID_new_init(cert
, 1))
839 || !sk_ESS_CERT_ID_push(sc
->cert_ids
, cid
))
845 ESS_SIGNING_CERT_free(sc
);
846 TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT
, ERR_R_MALLOC_FAILURE
);
850 static ESS_CERT_ID
*ESS_CERT_ID_new_init(X509
*cert
, int issuer_needed
)
852 ESS_CERT_ID
*cid
= NULL
;
853 GENERAL_NAME
*name
= NULL
;
855 /* Recompute SHA1 hash of certificate if necessary (side effect). */
856 X509_check_purpose(cert
, -1, 0);
858 if (!(cid
= ESS_CERT_ID_new()))
860 if (!ASN1_OCTET_STRING_set(cid
->hash
, cert
->sha1_hash
,
861 sizeof(cert
->sha1_hash
)))
864 /* Setting the issuer/serial if requested. */
866 /* Creating issuer/serial structure. */
867 if (!cid
->issuer_serial
868 && !(cid
->issuer_serial
= ESS_ISSUER_SERIAL_new()))
870 /* Creating general name from the certificate issuer. */
871 if (!(name
= GENERAL_NAME_new()))
873 name
->type
= GEN_DIRNAME
;
874 if (!(name
->d
.dirn
= X509_NAME_dup(cert
->cert_info
->issuer
)))
876 if (!sk_GENERAL_NAME_push(cid
->issuer_serial
->issuer
, name
))
878 name
= NULL
; /* Ownership is lost. */
879 /* Setting the serial number. */
880 ASN1_INTEGER_free(cid
->issuer_serial
->serial
);
881 if (!(cid
->issuer_serial
->serial
=
882 ASN1_INTEGER_dup(cert
->cert_info
->serialNumber
)))
888 GENERAL_NAME_free(name
);
889 ESS_CERT_ID_free(cid
);
890 TSerr(TS_F_ESS_CERT_ID_NEW_INIT
, ERR_R_MALLOC_FAILURE
);
894 static int TS_TST_INFO_content_new(PKCS7
*p7
)
897 ASN1_OCTET_STRING
*octet_string
= NULL
;
899 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
900 if (!(ret
= PKCS7_new()))
902 if (!(ret
->d
.other
= ASN1_TYPE_new()))
904 ret
->type
= OBJ_nid2obj(NID_id_smime_ct_TSTInfo
);
905 if (!(octet_string
= ASN1_OCTET_STRING_new()))
907 ASN1_TYPE_set(ret
->d
.other
, V_ASN1_OCTET_STRING
, octet_string
);
910 /* Add encapsulated content to signed PKCS7 structure. */
911 if (!PKCS7_set_content(p7
, ret
))
916 ASN1_OCTET_STRING_free(octet_string
);
921 static int ESS_add_signing_cert(PKCS7_SIGNER_INFO
*si
, ESS_SIGNING_CERT
*sc
)
923 ASN1_STRING
*seq
= NULL
;
924 unsigned char *p
, *pp
= NULL
;
927 len
= i2d_ESS_SIGNING_CERT(sc
, NULL
);
928 if (!(pp
= (unsigned char *)OPENSSL_malloc(len
))) {
929 TSerr(TS_F_ESS_ADD_SIGNING_CERT
, ERR_R_MALLOC_FAILURE
);
933 i2d_ESS_SIGNING_CERT(sc
, &p
);
934 if (!(seq
= ASN1_STRING_new()) || !ASN1_STRING_set(seq
, pp
, len
)) {
935 TSerr(TS_F_ESS_ADD_SIGNING_CERT
, ERR_R_MALLOC_FAILURE
);
940 return PKCS7_add_signed_attribute(si
,
941 NID_id_smime_aa_signingCertificate
,
942 V_ASN1_SEQUENCE
, seq
);
944 ASN1_STRING_free(seq
);
950 static ASN1_GENERALIZEDTIME
951 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME
*asn1_time
,
952 long sec
, long usec
, unsigned precision
)
954 time_t time_sec
= (time_t)sec
;
955 struct tm
*tm
= NULL
;
956 char genTime_str
[17 + TS_MAX_CLOCK_PRECISION_DIGITS
];
957 char *p
= genTime_str
;
958 char *p_end
= genTime_str
+ sizeof(genTime_str
);
960 if (precision
> TS_MAX_CLOCK_PRECISION_DIGITS
)
963 if (!(tm
= gmtime(&time_sec
)))
967 * Put "genTime_str" in GeneralizedTime format. We work around the
968 * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST
969 * NOT include fractional seconds") and OpenSSL related functions to
970 * meet the rfc3161 requirement: "GeneralizedTime syntax can include
971 * fraction-of-second details".
973 p
+= BIO_snprintf(p
, p_end
- p
,
974 "%04d%02d%02d%02d%02d%02d",
975 tm
->tm_year
+ 1900, tm
->tm_mon
+ 1, tm
->tm_mday
,
976 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
978 /* Add fraction of seconds (leave space for dot and null). */
979 BIO_snprintf(p
, 2 + precision
, ".%06ld", usec
);
981 * We cannot use the snprintf return value, because it might have
987 * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the
988 * following restrictions for a DER-encoding, which OpenSSL
989 * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't
990 * support: "The encoding MUST terminate with a "Z" (which means
991 * "Zulu" time). The decimal point element, if present, MUST be the
992 * point option ".". The fractional-seconds elements, if present,
993 * MUST omit all trailing 0's; if the elements correspond to 0, they
994 * MUST be wholly omitted, and the decimal point element also MUST be
998 * Remove trailing zeros. The dot guarantees the exit condition of
999 * this loop even if all the digits are zero.
1005 /* p points to either the dot or the last non-zero digit. */
1009 /* Add the trailing Z and the terminating null. */
1013 /* Now call OpenSSL to check and set our genTime value */
1014 if (!asn1_time
&& !(asn1_time
= M_ASN1_GENERALIZEDTIME_new()))
1016 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time
, genTime_str
)) {
1017 ASN1_GENERALIZEDTIME_free(asn1_time
);
1023 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION
, TS_R_COULD_NOT_SET_TIME
);