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).
60 #include "internal/cryptlib.h"
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
= OPENSSL_zalloc(sizeof(*ctx
))) == NULL
) {
173 TSerr(TS_F_TS_RESP_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
177 /* Setting default callbacks. */
178 ctx
->serial_cb
= def_serial_cb
;
179 ctx
->time_cb
= def_time_cb
;
180 ctx
->extension_cb
= def_extension_cb
;
185 void TS_RESP_CTX_free(TS_RESP_CTX
*ctx
)
190 X509_free(ctx
->signer_cert
);
191 EVP_PKEY_free(ctx
->signer_key
);
192 sk_X509_pop_free(ctx
->certs
, X509_free
);
193 sk_ASN1_OBJECT_pop_free(ctx
->policies
, ASN1_OBJECT_free
);
194 ASN1_OBJECT_free(ctx
->default_policy
);
195 sk_EVP_MD_free(ctx
->mds
); /* No EVP_MD_free method exists. */
196 ASN1_INTEGER_free(ctx
->seconds
);
197 ASN1_INTEGER_free(ctx
->millis
);
198 ASN1_INTEGER_free(ctx
->micros
);
202 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX
*ctx
, X509
*signer
)
204 if (X509_check_purpose(signer
, X509_PURPOSE_TIMESTAMP_SIGN
, 0) != 1) {
205 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT
,
206 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE
);
209 X509_free(ctx
->signer_cert
);
210 ctx
->signer_cert
= signer
;
211 X509_up_ref(ctx
->signer_cert
);
215 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX
*ctx
, EVP_PKEY
*key
)
217 EVP_PKEY_free(ctx
->signer_key
);
218 ctx
->signer_key
= key
;
219 CRYPTO_add(&ctx
->signer_key
->references
, +1, CRYPTO_LOCK_EVP_PKEY
);
224 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX
*ctx
, ASN1_OBJECT
*def_policy
)
226 ASN1_OBJECT_free(ctx
->default_policy
);
227 if ((ctx
->default_policy
= OBJ_dup(def_policy
)) == NULL
)
231 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY
, ERR_R_MALLOC_FAILURE
);
235 int TS_RESP_CTX_set_certs(TS_RESP_CTX
*ctx
, STACK_OF(X509
) *certs
)
238 sk_X509_pop_free(ctx
->certs
, X509_free
);
242 if ((ctx
->certs
= X509_chain_up_ref(certs
)) == NULL
) {
243 TSerr(TS_F_TS_RESP_CTX_SET_CERTS
, ERR_R_MALLOC_FAILURE
);
250 int TS_RESP_CTX_add_policy(TS_RESP_CTX
*ctx
, ASN1_OBJECT
*policy
)
252 ASN1_OBJECT
*copy
= NULL
;
254 /* Create new policy stack if necessary. */
255 if (ctx
->policies
== NULL
256 && (ctx
->policies
= sk_ASN1_OBJECT_new_null()) == NULL
)
258 if ((copy
= OBJ_dup(policy
)) == NULL
)
260 if (!sk_ASN1_OBJECT_push(ctx
->policies
, copy
))
265 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY
, ERR_R_MALLOC_FAILURE
);
266 ASN1_OBJECT_free(copy
);
270 int TS_RESP_CTX_add_md(TS_RESP_CTX
*ctx
, const EVP_MD
*md
)
272 /* Create new md stack if necessary. */
274 && (ctx
->mds
= sk_EVP_MD_new_null()) == NULL
)
276 /* Add the shared md, no copy needed. */
277 if (!sk_EVP_MD_push(ctx
->mds
, (EVP_MD
*)md
))
282 TSerr(TS_F_TS_RESP_CTX_ADD_MD
, ERR_R_MALLOC_FAILURE
);
286 #define TS_RESP_CTX_accuracy_free(ctx) \
287 ASN1_INTEGER_free(ctx->seconds); \
288 ctx->seconds = NULL; \
289 ASN1_INTEGER_free(ctx->millis); \
290 ctx->millis = NULL; \
291 ASN1_INTEGER_free(ctx->micros); \
294 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX
*ctx
,
295 int secs
, int millis
, int micros
)
298 TS_RESP_CTX_accuracy_free(ctx
);
300 && ((ctx
->seconds
= ASN1_INTEGER_new()) == NULL
301 || !ASN1_INTEGER_set(ctx
->seconds
, secs
)))
304 && ((ctx
->millis
= ASN1_INTEGER_new()) == NULL
305 || !ASN1_INTEGER_set(ctx
->millis
, millis
)))
308 && ((ctx
->micros
= ASN1_INTEGER_new()) == NULL
309 || !ASN1_INTEGER_set(ctx
->micros
, micros
)))
314 TS_RESP_CTX_accuracy_free(ctx
);
315 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY
, ERR_R_MALLOC_FAILURE
);
319 void TS_RESP_CTX_add_flags(TS_RESP_CTX
*ctx
, int flags
)
324 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX
*ctx
, TS_serial_cb cb
, void *data
)
327 ctx
->serial_cb_data
= data
;
330 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX
*ctx
, TS_time_cb cb
, void *data
)
333 ctx
->time_cb_data
= data
;
336 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX
*ctx
,
337 TS_extension_cb cb
, void *data
)
339 ctx
->extension_cb
= cb
;
340 ctx
->extension_cb_data
= data
;
343 int TS_RESP_CTX_set_status_info(TS_RESP_CTX
*ctx
,
344 int status
, const char *text
)
346 TS_STATUS_INFO
*si
= NULL
;
347 ASN1_UTF8STRING
*utf8_text
= NULL
;
350 if ((si
= TS_STATUS_INFO_new()) == NULL
)
352 if (!ASN1_INTEGER_set(si
->status
, status
))
355 if ((utf8_text
= ASN1_UTF8STRING_new()) == NULL
356 || !ASN1_STRING_set(utf8_text
, text
, strlen(text
)))
359 && (si
->text
= sk_ASN1_UTF8STRING_new_null()) == NULL
)
361 if (!sk_ASN1_UTF8STRING_push(si
->text
, utf8_text
))
363 utf8_text
= NULL
; /* Ownership is lost. */
365 if (!TS_RESP_set_status_info(ctx
->response
, si
))
370 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO
, ERR_R_MALLOC_FAILURE
);
371 TS_STATUS_INFO_free(si
);
372 ASN1_UTF8STRING_free(utf8_text
);
376 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX
*ctx
,
377 int status
, const char *text
)
380 TS_STATUS_INFO
*si
= TS_RESP_get_status_info(ctx
->response
);
382 if (ASN1_INTEGER_get(si
->status
) == TS_STATUS_GRANTED
) {
383 /* Status has not been set, set it now. */
384 ret
= TS_RESP_CTX_set_status_info(ctx
, status
, text
);
389 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX
*ctx
, int failure
)
391 TS_STATUS_INFO
*si
= TS_RESP_get_status_info(ctx
->response
);
392 if (si
->failure_info
== NULL
393 && (si
->failure_info
= ASN1_BIT_STRING_new()) == NULL
)
395 if (!ASN1_BIT_STRING_set_bit(si
->failure_info
, failure
, 1))
399 TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO
, ERR_R_MALLOC_FAILURE
);
403 TS_REQ
*TS_RESP_CTX_get_request(TS_RESP_CTX
*ctx
)
408 TS_TST_INFO
*TS_RESP_CTX_get_tst_info(TS_RESP_CTX
*ctx
)
410 return ctx
->tst_info
;
413 int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX
*ctx
,
416 if (precision
> TS_MAX_CLOCK_PRECISION_DIGITS
)
418 ctx
->clock_precision_digits
= precision
;
422 /* Main entry method of the response generation. */
423 TS_RESP
*TS_RESP_create_response(TS_RESP_CTX
*ctx
, BIO
*req_bio
)
429 ts_RESP_CTX_init(ctx
);
431 /* Creating the response object. */
432 if ((ctx
->response
= TS_RESP_new()) == NULL
) {
433 TSerr(TS_F_TS_RESP_CREATE_RESPONSE
, ERR_R_MALLOC_FAILURE
);
437 /* Parsing DER request. */
438 if ((ctx
->request
= d2i_TS_REQ_bio(req_bio
, NULL
)) == NULL
) {
439 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
440 "Bad request format or " "system error.");
441 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_DATA_FORMAT
);
445 /* Setting default status info. */
446 if (!TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_GRANTED
, NULL
))
449 /* Checking the request format. */
450 if (!ts_RESP_check_request(ctx
))
453 /* Checking acceptable policies. */
454 if ((policy
= ts_RESP_get_policy(ctx
)) == NULL
)
457 /* Creating the TS_TST_INFO object. */
458 if ((ctx
->tst_info
= ts_RESP_create_tst_info(ctx
, policy
)) == NULL
)
461 /* Processing extensions. */
462 if (!ts_RESP_process_extensions(ctx
))
465 /* Generating the signature. */
466 if (!ts_RESP_sign(ctx
))
469 /* Everything was successful. */
473 TSerr(TS_F_TS_RESP_CREATE_RESPONSE
, TS_R_RESPONSE_SETUP_ERROR
);
474 if (ctx
->response
!= NULL
) {
475 if (TS_RESP_CTX_set_status_info_cond(ctx
,
477 "Error during response "
478 "generation.") == 0) {
479 TS_RESP_free(ctx
->response
);
480 ctx
->response
= NULL
;
484 response
= ctx
->response
;
485 ctx
->response
= NULL
; /* Ownership will be returned to caller. */
486 ts_RESP_CTX_cleanup(ctx
);
490 /* Initializes the variable part of the context. */
491 static void ts_RESP_CTX_init(TS_RESP_CTX
*ctx
)
494 ctx
->response
= NULL
;
495 ctx
->tst_info
= NULL
;
498 /* Cleans up the variable part of the context. */
499 static void ts_RESP_CTX_cleanup(TS_RESP_CTX
*ctx
)
501 TS_REQ_free(ctx
->request
);
503 TS_RESP_free(ctx
->response
);
504 ctx
->response
= NULL
;
505 TS_TST_INFO_free(ctx
->tst_info
);
506 ctx
->tst_info
= NULL
;
509 /* Checks the format and content of the request. */
510 static int ts_RESP_check_request(TS_RESP_CTX
*ctx
)
512 TS_REQ
*request
= ctx
->request
;
513 TS_MSG_IMPRINT
*msg_imprint
;
516 const ASN1_OCTET_STRING
*digest
;
520 /* Checking request version. */
521 if (TS_REQ_get_version(request
) != 1) {
522 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
523 "Bad request version.");
524 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_REQUEST
);
528 /* Checking message digest algorithm. */
529 msg_imprint
= TS_REQ_get_msg_imprint(request
);
530 md_alg
= TS_MSG_IMPRINT_get_algo(msg_imprint
);
531 md_alg_id
= OBJ_obj2nid(md_alg
->algorithm
);
532 for (i
= 0; !md
&& i
< sk_EVP_MD_num(ctx
->mds
); ++i
) {
533 EVP_MD
*current_md
= sk_EVP_MD_value(ctx
->mds
, i
);
534 if (md_alg_id
== EVP_MD_type(current_md
))
538 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
539 "Message digest algorithm is "
541 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_ALG
);
545 /* No message digest takes parameter. */
546 if (md_alg
->parameter
&& ASN1_TYPE_get(md_alg
->parameter
) != V_ASN1_NULL
) {
547 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
548 "Superfluous message digest "
550 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_ALG
);
553 /* Checking message digest size. */
554 digest
= TS_MSG_IMPRINT_get_msg(msg_imprint
);
555 if (digest
->length
!= EVP_MD_size(md
)) {
556 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
557 "Bad message digest.");
558 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_BAD_DATA_FORMAT
);
565 /* Returns the TSA policy based on the requested and acceptable policies. */
566 static ASN1_OBJECT
*ts_RESP_get_policy(TS_RESP_CTX
*ctx
)
568 ASN1_OBJECT
*requested
= TS_REQ_get_policy_id(ctx
->request
);
569 ASN1_OBJECT
*policy
= NULL
;
572 if (ctx
->default_policy
== NULL
) {
573 TSerr(TS_F_TS_RESP_GET_POLICY
, TS_R_INVALID_NULL_POINTER
);
577 * Return the default policy if none is requested or the default is
580 if (!requested
|| !OBJ_cmp(requested
, ctx
->default_policy
))
581 policy
= ctx
->default_policy
;
583 /* Check if the policy is acceptable. */
584 for (i
= 0; !policy
&& i
< sk_ASN1_OBJECT_num(ctx
->policies
); ++i
) {
585 ASN1_OBJECT
*current
= sk_ASN1_OBJECT_value(ctx
->policies
, i
);
586 if (!OBJ_cmp(requested
, current
))
590 TSerr(TS_F_TS_RESP_GET_POLICY
, TS_R_UNACCEPTABLE_POLICY
);
591 TS_RESP_CTX_set_status_info(ctx
, TS_STATUS_REJECTION
,
592 "Requested policy is not " "supported.");
593 TS_RESP_CTX_add_failure_info(ctx
, TS_INFO_UNACCEPTED_POLICY
);
598 /* Creates the TS_TST_INFO object based on the settings of the context. */
599 static TS_TST_INFO
*ts_RESP_create_tst_info(TS_RESP_CTX
*ctx
,
603 TS_TST_INFO
*tst_info
= NULL
;
604 ASN1_INTEGER
*serial
= NULL
;
605 ASN1_GENERALIZEDTIME
*asn1_time
= NULL
;
607 TS_ACCURACY
*accuracy
= NULL
;
608 const ASN1_INTEGER
*nonce
;
609 GENERAL_NAME
*tsa_name
= NULL
;
611 if ((tst_info
= TS_TST_INFO_new()) == NULL
)
613 if (!TS_TST_INFO_set_version(tst_info
, 1))
615 if (!TS_TST_INFO_set_policy_id(tst_info
, policy
))
617 if (!TS_TST_INFO_set_msg_imprint(tst_info
, ctx
->request
->msg_imprint
))
619 if ((serial
= ctx
->serial_cb(ctx
, ctx
->serial_cb_data
)) == NULL
620 || !TS_TST_INFO_set_serial(tst_info
, serial
))
622 if (!ctx
->time_cb(ctx
, ctx
->time_cb_data
, &sec
, &usec
)
624 TS_RESP_set_genTime_with_precision(NULL
, sec
, usec
,
625 ctx
->clock_precision_digits
)) == NULL
626 || !TS_TST_INFO_set_time(tst_info
, asn1_time
))
629 /* Setting accuracy if needed. */
630 if ((ctx
->seconds
|| ctx
->millis
|| ctx
->micros
)
631 && (accuracy
= TS_ACCURACY_new()) == NULL
)
634 if (ctx
->seconds
&& !TS_ACCURACY_set_seconds(accuracy
, ctx
->seconds
))
636 if (ctx
->millis
&& !TS_ACCURACY_set_millis(accuracy
, ctx
->millis
))
638 if (ctx
->micros
&& !TS_ACCURACY_set_micros(accuracy
, ctx
->micros
))
640 if (accuracy
&& !TS_TST_INFO_set_accuracy(tst_info
, accuracy
))
643 /* Setting ordering. */
644 if ((ctx
->flags
& TS_ORDERING
)
645 && !TS_TST_INFO_set_ordering(tst_info
, 1))
648 /* Setting nonce if needed. */
649 if ((nonce
= TS_REQ_get_nonce(ctx
->request
)) != NULL
650 && !TS_TST_INFO_set_nonce(tst_info
, nonce
))
653 /* Setting TSA name to subject of signer certificate. */
654 if (ctx
->flags
& TS_TSA_NAME
) {
655 if ((tsa_name
= GENERAL_NAME_new()) == NULL
)
657 tsa_name
->type
= GEN_DIRNAME
;
659 X509_NAME_dup(ctx
->signer_cert
->cert_info
->subject
);
660 if (!tsa_name
->d
.dirn
)
662 if (!TS_TST_INFO_set_tsa(tst_info
, tsa_name
))
669 TS_TST_INFO_free(tst_info
);
671 TSerr(TS_F_TS_RESP_CREATE_TST_INFO
, TS_R_TST_INFO_SETUP_ERROR
);
672 TS_RESP_CTX_set_status_info_cond(ctx
, TS_STATUS_REJECTION
,
673 "Error during TSTInfo "
676 GENERAL_NAME_free(tsa_name
);
677 TS_ACCURACY_free(accuracy
);
678 ASN1_GENERALIZEDTIME_free(asn1_time
);
679 ASN1_INTEGER_free(serial
);
684 /* Processing the extensions of the request. */
685 static int ts_RESP_process_extensions(TS_RESP_CTX
*ctx
)
687 STACK_OF(X509_EXTENSION
) *exts
= TS_REQ_get_exts(ctx
->request
);
691 for (i
= 0; ok
&& i
< sk_X509_EXTENSION_num(exts
); ++i
) {
692 X509_EXTENSION
*ext
= sk_X509_EXTENSION_value(exts
, i
);
694 * XXXXX The last argument was previously (void *)ctx->extension_cb,
695 * but ISO C doesn't permit converting a function pointer to void *.
696 * For lack of better information, I'm placing a NULL there instead.
697 * The callback can pick its own address out from the ctx anyway...
699 ok
= (*ctx
->extension_cb
) (ctx
, ext
, NULL
);
705 /* Functions for signing the TS_TST_INFO structure of the context. */
706 static int ts_RESP_sign(TS_RESP_CTX
*ctx
)
710 PKCS7_SIGNER_INFO
*si
;
711 STACK_OF(X509
) *certs
; /* Certificates to include in sc. */
712 ESS_SIGNING_CERT
*sc
= NULL
;
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
, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
723 /* Create a new PKCS7 signed object. */
724 if ((p7
= PKCS7_new()) == NULL
) {
725 TSerr(TS_F_TS_RESP_SIGN
, ERR_R_MALLOC_FAILURE
);
728 if (!PKCS7_set_type(p7
, NID_pkcs7_signed
))
731 /* Force SignedData version to be 3 instead of the default 1. */
732 if (!ASN1_INTEGER_set(p7
->d
.sign
->version
, 3))
735 /* Add signer certificate and optional certificate chain. */
736 if (TS_REQ_get_cert_req(ctx
->request
)) {
737 PKCS7_add_certificate(p7
, ctx
->signer_cert
);
739 for (i
= 0; i
< sk_X509_num(ctx
->certs
); ++i
) {
740 X509
*cert
= sk_X509_value(ctx
->certs
, i
);
741 PKCS7_add_certificate(p7
, cert
);
746 /* Add a new signer info. */
747 if ((si
= PKCS7_add_signature(p7
, ctx
->signer_cert
,
748 ctx
->signer_key
, EVP_sha1())) == NULL
) {
749 TSerr(TS_F_TS_RESP_SIGN
, TS_R_PKCS7_ADD_SIGNATURE_ERROR
);
753 /* Add content type signed attribute to the signer info. */
754 oid
= OBJ_nid2obj(NID_id_smime_ct_TSTInfo
);
755 if (!PKCS7_add_signed_attribute(si
, NID_pkcs9_contentType
,
756 V_ASN1_OBJECT
, oid
)) {
757 TSerr(TS_F_TS_RESP_SIGN
, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR
);
762 * Create the ESS SigningCertificate attribute which contains the signer
763 * certificate id and optionally the certificate chain.
765 certs
= ctx
->flags
& TS_ESS_CERT_ID_CHAIN
? ctx
->certs
: NULL
;
766 if ((sc
= ess_SIGNING_CERT_new_init(ctx
->signer_cert
, certs
)) == NULL
)
769 /* Add SigningCertificate signed attribute to the signer info. */
770 if (!ESS_add_signing_cert(si
, sc
)) {
771 TSerr(TS_F_TS_RESP_SIGN
, TS_R_ESS_ADD_SIGNING_CERT_ERROR
);
775 /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */
776 if (!ts_TST_INFO_content_new(p7
))
779 /* Add the DER encoded tst_info to the PKCS7 structure. */
780 if ((p7bio
= PKCS7_dataInit(p7
, NULL
)) == NULL
) {
781 TSerr(TS_F_TS_RESP_SIGN
, ERR_R_MALLOC_FAILURE
);
785 /* Convert tst_info to DER. */
786 if (!i2d_TS_TST_INFO_bio(p7bio
, ctx
->tst_info
)) {
787 TSerr(TS_F_TS_RESP_SIGN
, TS_R_TS_DATASIGN
);
791 /* Create the signature and add it to the signer info. */
792 if (!PKCS7_dataFinal(p7
, p7bio
)) {
793 TSerr(TS_F_TS_RESP_SIGN
, TS_R_TS_DATASIGN
);
797 /* Set new PKCS7 and TST_INFO objects. */
798 TS_RESP_set_tst_info(ctx
->response
, p7
, ctx
->tst_info
);
799 p7
= NULL
; /* Ownership is lost. */
800 ctx
->tst_info
= NULL
; /* Ownership is lost. */
805 TS_RESP_CTX_set_status_info_cond(ctx
, TS_STATUS_REJECTION
,
806 "Error during signature "
809 ESS_SIGNING_CERT_free(sc
);
814 static ESS_SIGNING_CERT
*ess_SIGNING_CERT_new_init(X509
*signcert
,
815 STACK_OF(X509
) *certs
)
818 ESS_SIGNING_CERT
*sc
= NULL
;
821 /* Creating the ESS_CERT_ID stack. */
822 if ((sc
= ESS_SIGNING_CERT_new()) == NULL
)
824 if (sc
->cert_ids
== NULL
825 && (sc
->cert_ids
= sk_ESS_CERT_ID_new_null()) == NULL
)
828 /* Adding the signing certificate id. */
829 if ((cid
= ess_CERT_ID_new_init(signcert
, 0)) == NULL
830 || !sk_ESS_CERT_ID_push(sc
->cert_ids
, cid
))
832 /* Adding the certificate chain ids. */
833 for (i
= 0; i
< sk_X509_num(certs
); ++i
) {
834 X509
*cert
= sk_X509_value(certs
, i
);
835 if ((cid
= ess_CERT_ID_new_init(cert
, 1)) == NULL
836 || !sk_ESS_CERT_ID_push(sc
->cert_ids
, cid
))
842 ESS_SIGNING_CERT_free(sc
);
843 TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT
, ERR_R_MALLOC_FAILURE
);
847 static ESS_CERT_ID
*ess_CERT_ID_new_init(X509
*cert
, int issuer_needed
)
849 ESS_CERT_ID
*cid
= NULL
;
850 GENERAL_NAME
*name
= NULL
;
852 /* Recompute SHA1 hash of certificate if necessary (side effect). */
853 X509_check_purpose(cert
, -1, 0);
855 if ((cid
= ESS_CERT_ID_new()) == NULL
)
857 if (!ASN1_OCTET_STRING_set(cid
->hash
, cert
->sha1_hash
,
858 sizeof(cert
->sha1_hash
)))
861 /* Setting the issuer/serial if requested. */
863 /* Creating issuer/serial structure. */
864 if (cid
->issuer_serial
== NULL
865 && (cid
->issuer_serial
= ESS_ISSUER_SERIAL_new()) == NULL
)
867 /* Creating general name from the certificate issuer. */
868 if ((name
= GENERAL_NAME_new()) == NULL
)
870 name
->type
= GEN_DIRNAME
;
871 if ((name
->d
.dirn
= X509_NAME_dup(cert
->cert_info
->issuer
)) == NULL
)
873 if (!sk_GENERAL_NAME_push(cid
->issuer_serial
->issuer
, name
))
875 name
= NULL
; /* Ownership is lost. */
876 /* Setting the serial number. */
877 ASN1_INTEGER_free(cid
->issuer_serial
->serial
);
878 if (!(cid
->issuer_serial
->serial
=
879 ASN1_INTEGER_dup(cert
->cert_info
->serialNumber
)))
885 GENERAL_NAME_free(name
);
886 ESS_CERT_ID_free(cid
);
887 TSerr(TS_F_ESS_CERT_ID_NEW_INIT
, ERR_R_MALLOC_FAILURE
);
891 static int ts_TST_INFO_content_new(PKCS7
*p7
)
894 ASN1_OCTET_STRING
*octet_string
= NULL
;
896 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
897 if ((ret
= PKCS7_new()) == NULL
)
899 if ((ret
->d
.other
= ASN1_TYPE_new()) == NULL
)
901 ret
->type
= OBJ_nid2obj(NID_id_smime_ct_TSTInfo
);
902 if ((octet_string
= ASN1_OCTET_STRING_new()) == NULL
)
904 ASN1_TYPE_set(ret
->d
.other
, V_ASN1_OCTET_STRING
, octet_string
);
907 /* Add encapsulated content to signed PKCS7 structure. */
908 if (!PKCS7_set_content(p7
, ret
))
913 ASN1_OCTET_STRING_free(octet_string
);
918 static int ESS_add_signing_cert(PKCS7_SIGNER_INFO
*si
, ESS_SIGNING_CERT
*sc
)
920 ASN1_STRING
*seq
= NULL
;
921 unsigned char *p
, *pp
= NULL
;
924 len
= i2d_ESS_SIGNING_CERT(sc
, NULL
);
925 if ((pp
= OPENSSL_malloc(len
)) == NULL
) {
926 TSerr(TS_F_ESS_ADD_SIGNING_CERT
, ERR_R_MALLOC_FAILURE
);
930 i2d_ESS_SIGNING_CERT(sc
, &p
);
931 if ((seq
= ASN1_STRING_new()) == NULL
|| !ASN1_STRING_set(seq
, pp
, len
)) {
932 TSerr(TS_F_ESS_ADD_SIGNING_CERT
, ERR_R_MALLOC_FAILURE
);
937 return PKCS7_add_signed_attribute(si
,
938 NID_id_smime_aa_signingCertificate
,
939 V_ASN1_SEQUENCE
, seq
);
941 ASN1_STRING_free(seq
);
947 static ASN1_GENERALIZEDTIME
948 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME
*asn1_time
,
949 long sec
, long usec
, unsigned precision
)
951 time_t time_sec
= (time_t)sec
;
952 struct tm
*tm
= NULL
;
953 char genTime_str
[17 + TS_MAX_CLOCK_PRECISION_DIGITS
];
954 char *p
= genTime_str
;
955 char *p_end
= genTime_str
+ sizeof(genTime_str
);
957 if (precision
> TS_MAX_CLOCK_PRECISION_DIGITS
)
960 if ((tm
= gmtime(&time_sec
)) == NULL
)
964 * Put "genTime_str" in GeneralizedTime format. We work around the
965 * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST
966 * NOT include fractional seconds") and OpenSSL related functions to
967 * meet the rfc3161 requirement: "GeneralizedTime syntax can include
968 * fraction-of-second details".
970 p
+= BIO_snprintf(p
, p_end
- p
,
971 "%04d%02d%02d%02d%02d%02d",
972 tm
->tm_year
+ 1900, tm
->tm_mon
+ 1, tm
->tm_mday
,
973 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
975 /* Add fraction of seconds (leave space for dot and null). */
976 BIO_snprintf(p
, 2 + precision
, ".%06ld", usec
);
978 * We cannot use the snprintf return value, because it might have
984 * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the
985 * following restrictions for a DER-encoding, which OpenSSL
986 * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't
987 * support: "The encoding MUST terminate with a "Z" (which means
988 * "Zulu" time). The decimal point element, if present, MUST be the
989 * point option ".". The fractional-seconds elements, if present,
990 * MUST omit all trailing 0's; if the elements correspond to 0, they
991 * MUST be wholly omitted, and the decimal point element also MUST be
995 * Remove trailing zeros. The dot guarantees the exit condition of
996 * this loop even if all the digits are zero.
1002 /* p points to either the dot or the last non-zero digit. */
1006 /* Add the trailing Z and the terminating null. */
1010 /* Now call OpenSSL to check and set our genTime value */
1011 if (asn1_time
== NULL
1012 && (asn1_time
= ASN1_GENERALIZEDTIME_new()) == NULL
)
1014 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time
, genTime_str
)) {
1015 ASN1_GENERALIZEDTIME_free(asn1_time
);
1021 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION
, TS_R_COULD_NOT_SET_TIME
);