2 * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
13 #include <openssl/objects.h>
14 #include <openssl/ts.h>
15 #include <openssl/pkcs7.h>
16 #include <openssl/crypto.h>
18 #include "crypto/ess.h"
20 DEFINE_STACK_OF_CONST(EVP_MD)
22 static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *);
23 static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec);
24 static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *);
26 static void ts_RESP_CTX_init(TS_RESP_CTX *ctx);
27 static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx);
28 static int ts_RESP_check_request(TS_RESP_CTX *ctx);
29 static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx);
30 static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx,
32 static int ts_RESP_process_extensions(TS_RESP_CTX *ctx);
33 static int ts_RESP_sign(TS_RESP_CTX *ctx);
35 static int ts_TST_INFO_content_new(PKCS7 *p7);
37 static ASN1_GENERALIZEDTIME
38 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long,
41 /* Default callback for response generation. */
42 static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data)
44 ASN1_INTEGER *serial = ASN1_INTEGER_new();
48 if (!ASN1_INTEGER_set(serial, 1))
53 TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE);
54 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
55 "Error during serial number generation.");
56 ASN1_INTEGER_free(serial);
60 #if defined(OPENSSL_SYS_UNIX)
62 static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
63 long *sec, long *usec)
66 if (gettimeofday(&tv, NULL) != 0) {
67 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
68 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
69 "Time is not available.");
70 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
81 static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
82 long *sec, long *usec)
85 if (time(&t) == (time_t)-1) {
86 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
87 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
88 "Time is not available.");
89 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
100 static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext,
103 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
104 "Unsupported extension.");
105 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION);
109 /* TS_RESP_CTX management functions. */
111 TS_RESP_CTX *TS_RESP_CTX_new(void)
115 if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) {
116 TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE);
120 ctx->signer_md = EVP_sha256();
122 ctx->serial_cb = def_serial_cb;
123 ctx->time_cb = def_time_cb;
124 ctx->extension_cb = def_extension_cb;
129 void TS_RESP_CTX_free(TS_RESP_CTX *ctx)
134 X509_free(ctx->signer_cert);
135 EVP_PKEY_free(ctx->signer_key);
136 sk_X509_pop_free(ctx->certs, X509_free);
137 sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free);
138 ASN1_OBJECT_free(ctx->default_policy);
139 sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */
140 ASN1_INTEGER_free(ctx->seconds);
141 ASN1_INTEGER_free(ctx->millis);
142 ASN1_INTEGER_free(ctx->micros);
146 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer)
148 if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) {
149 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT,
150 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE);
153 X509_free(ctx->signer_cert);
154 ctx->signer_cert = signer;
155 X509_up_ref(ctx->signer_cert);
159 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key)
161 EVP_PKEY_free(ctx->signer_key);
162 ctx->signer_key = key;
163 EVP_PKEY_up_ref(ctx->signer_key);
168 int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx, const EVP_MD *md)
174 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy)
176 ASN1_OBJECT_free(ctx->default_policy);
177 if ((ctx->default_policy = OBJ_dup(def_policy)) == NULL)
181 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE);
185 int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs)
188 sk_X509_pop_free(ctx->certs, X509_free);
192 if ((ctx->certs = X509_chain_up_ref(certs)) == NULL) {
193 TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE);
200 int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy)
202 ASN1_OBJECT *copy = NULL;
204 if (ctx->policies == NULL
205 && (ctx->policies = sk_ASN1_OBJECT_new_null()) == NULL)
207 if ((copy = OBJ_dup(policy)) == NULL)
209 if (!sk_ASN1_OBJECT_push(ctx->policies, copy))
214 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE);
215 ASN1_OBJECT_free(copy);
219 int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md)
222 && (ctx->mds = sk_EVP_MD_new_null()) == NULL)
224 if (!sk_EVP_MD_push(ctx->mds, md))
229 TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE);
233 #define TS_RESP_CTX_accuracy_free(ctx) \
234 ASN1_INTEGER_free(ctx->seconds); \
235 ctx->seconds = NULL; \
236 ASN1_INTEGER_free(ctx->millis); \
237 ctx->millis = NULL; \
238 ASN1_INTEGER_free(ctx->micros); \
241 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
242 int secs, int millis, int micros)
245 TS_RESP_CTX_accuracy_free(ctx);
247 && ((ctx->seconds = ASN1_INTEGER_new()) == NULL
248 || !ASN1_INTEGER_set(ctx->seconds, secs)))
251 && ((ctx->millis = ASN1_INTEGER_new()) == NULL
252 || !ASN1_INTEGER_set(ctx->millis, millis)))
255 && ((ctx->micros = ASN1_INTEGER_new()) == NULL
256 || !ASN1_INTEGER_set(ctx->micros, micros)))
261 TS_RESP_CTX_accuracy_free(ctx);
262 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE);
266 void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags)
271 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data)
274 ctx->serial_cb_data = data;
277 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data)
280 ctx->time_cb_data = data;
283 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
284 TS_extension_cb cb, void *data)
286 ctx->extension_cb = cb;
287 ctx->extension_cb_data = data;
290 int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
291 int status, const char *text)
293 TS_STATUS_INFO *si = NULL;
294 ASN1_UTF8STRING *utf8_text = NULL;
297 if ((si = TS_STATUS_INFO_new()) == NULL)
299 if (!ASN1_INTEGER_set(si->status, status))
302 if ((utf8_text = ASN1_UTF8STRING_new()) == NULL
303 || !ASN1_STRING_set(utf8_text, text, strlen(text)))
306 && (si->text = sk_ASN1_UTF8STRING_new_null()) == NULL)
308 if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text))
310 utf8_text = NULL; /* Ownership is lost. */
312 if (!TS_RESP_set_status_info(ctx->response, si))
317 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE);
318 TS_STATUS_INFO_free(si);
319 ASN1_UTF8STRING_free(utf8_text);
323 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
324 int status, const char *text)
327 TS_STATUS_INFO *si = ctx->response->status_info;
329 if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) {
330 ret = TS_RESP_CTX_set_status_info(ctx, status, text);
335 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure)
337 TS_STATUS_INFO *si = ctx->response->status_info;
338 if (si->failure_info == NULL
339 && (si->failure_info = ASN1_BIT_STRING_new()) == NULL)
341 if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1))
345 TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE);
349 TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx)
354 TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx)
356 return ctx->tst_info;
359 int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx,
362 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
364 ctx->clock_precision_digits = precision;
368 /* Main entry method of the response generation. */
369 TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio)
375 ts_RESP_CTX_init(ctx);
377 if ((ctx->response = TS_RESP_new()) == NULL) {
378 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE);
381 if ((ctx->request = d2i_TS_REQ_bio(req_bio, NULL)) == NULL) {
382 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
383 "Bad request format or system error.");
384 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
387 if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL))
389 if (!ts_RESP_check_request(ctx))
391 if ((policy = ts_RESP_get_policy(ctx)) == NULL)
393 if ((ctx->tst_info = ts_RESP_create_tst_info(ctx, policy)) == NULL)
395 if (!ts_RESP_process_extensions(ctx))
397 if (!ts_RESP_sign(ctx))
403 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR);
404 if (ctx->response != NULL) {
405 if (TS_RESP_CTX_set_status_info_cond(ctx,
407 "Error during response "
408 "generation.") == 0) {
409 TS_RESP_free(ctx->response);
410 ctx->response = NULL;
414 response = ctx->response;
415 ctx->response = NULL; /* Ownership will be returned to caller. */
416 ts_RESP_CTX_cleanup(ctx);
420 /* Initializes the variable part of the context. */
421 static void ts_RESP_CTX_init(TS_RESP_CTX *ctx)
424 ctx->response = NULL;
425 ctx->tst_info = NULL;
428 /* Cleans up the variable part of the context. */
429 static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx)
431 TS_REQ_free(ctx->request);
433 TS_RESP_free(ctx->response);
434 ctx->response = NULL;
435 TS_TST_INFO_free(ctx->tst_info);
436 ctx->tst_info = NULL;
439 /* Checks the format and content of the request. */
440 static int ts_RESP_check_request(TS_RESP_CTX *ctx)
442 TS_REQ *request = ctx->request;
443 TS_MSG_IMPRINT *msg_imprint;
446 const ASN1_OCTET_STRING *digest;
447 const EVP_MD *md = NULL;
450 if (TS_REQ_get_version(request) != 1) {
451 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
452 "Bad request version.");
453 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST);
457 msg_imprint = request->msg_imprint;
458 md_alg = msg_imprint->hash_algo;
459 md_alg_id = OBJ_obj2nid(md_alg->algorithm);
460 for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) {
461 const EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i);
462 if (md_alg_id == EVP_MD_type(current_md))
466 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
467 "Message digest algorithm is "
469 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
473 if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) {
474 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
475 "Superfluous message digest "
477 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
480 digest = msg_imprint->hashed_msg;
481 if (digest->length != EVP_MD_size(md)) {
482 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
483 "Bad message digest.");
484 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
491 /* Returns the TSA policy based on the requested and acceptable policies. */
492 static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx)
494 ASN1_OBJECT *requested = ctx->request->policy_id;
495 ASN1_OBJECT *policy = NULL;
498 if (ctx->default_policy == NULL) {
499 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER);
502 if (!requested || !OBJ_cmp(requested, ctx->default_policy))
503 policy = ctx->default_policy;
505 /* Check if the policy is acceptable. */
506 for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) {
507 ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i);
508 if (!OBJ_cmp(requested, current))
511 if (policy == NULL) {
512 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY);
513 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
514 "Requested policy is not " "supported.");
515 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY);
520 /* Creates the TS_TST_INFO object based on the settings of the context. */
521 static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx,
525 TS_TST_INFO *tst_info = NULL;
526 ASN1_INTEGER *serial = NULL;
527 ASN1_GENERALIZEDTIME *asn1_time = NULL;
529 TS_ACCURACY *accuracy = NULL;
530 const ASN1_INTEGER *nonce;
531 GENERAL_NAME *tsa_name = NULL;
533 if ((tst_info = TS_TST_INFO_new()) == NULL)
535 if (!TS_TST_INFO_set_version(tst_info, 1))
537 if (!TS_TST_INFO_set_policy_id(tst_info, policy))
539 if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint))
541 if ((serial = ctx->serial_cb(ctx, ctx->serial_cb_data)) == NULL
542 || !TS_TST_INFO_set_serial(tst_info, serial))
544 if (!ctx->time_cb(ctx, ctx->time_cb_data, &sec, &usec)
546 TS_RESP_set_genTime_with_precision(NULL, sec, usec,
547 ctx->clock_precision_digits)) == NULL
548 || !TS_TST_INFO_set_time(tst_info, asn1_time))
551 if ((ctx->seconds || ctx->millis || ctx->micros)
552 && (accuracy = TS_ACCURACY_new()) == NULL)
554 if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds))
556 if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis))
558 if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros))
560 if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy))
563 if ((ctx->flags & TS_ORDERING)
564 && !TS_TST_INFO_set_ordering(tst_info, 1))
567 if ((nonce = ctx->request->nonce) != NULL
568 && !TS_TST_INFO_set_nonce(tst_info, nonce))
571 if (ctx->flags & TS_TSA_NAME) {
572 if ((tsa_name = GENERAL_NAME_new()) == NULL)
574 tsa_name->type = GEN_DIRNAME;
576 X509_NAME_dup(X509_get_subject_name(ctx->signer_cert));
577 if (!tsa_name->d.dirn)
579 if (!TS_TST_INFO_set_tsa(tst_info, tsa_name))
586 TS_TST_INFO_free(tst_info);
588 TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR);
589 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
590 "Error during TSTInfo "
593 GENERAL_NAME_free(tsa_name);
594 TS_ACCURACY_free(accuracy);
595 ASN1_GENERALIZEDTIME_free(asn1_time);
596 ASN1_INTEGER_free(serial);
601 /* Processing the extensions of the request. */
602 static int ts_RESP_process_extensions(TS_RESP_CTX *ctx)
604 STACK_OF(X509_EXTENSION) *exts = ctx->request->extensions;
608 for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) {
609 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
611 * The last argument was previously (void *)ctx->extension_cb,
612 * but ISO C doesn't permit converting a function pointer to void *.
613 * For lack of better information, I'm placing a NULL there instead.
614 * The callback can pick its own address out from the ctx anyway...
616 ok = (*ctx->extension_cb) (ctx, ext, NULL);
622 /* Functions for signing the TS_TST_INFO structure of the context. */
623 static int ts_RESP_sign(TS_RESP_CTX *ctx)
627 PKCS7_SIGNER_INFO *si;
628 STACK_OF(X509) *certs; /* Certificates to include in sc. */
629 ESS_SIGNING_CERT_V2 *sc2 = NULL;
630 ESS_SIGNING_CERT *sc = NULL;
635 if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) {
636 TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
640 if ((p7 = PKCS7_new()) == NULL) {
641 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
644 if (!PKCS7_set_type(p7, NID_pkcs7_signed))
646 if (!ASN1_INTEGER_set(p7->d.sign->version, 3))
649 if (ctx->request->cert_req) {
650 PKCS7_add_certificate(p7, ctx->signer_cert);
652 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
653 X509 *cert = sk_X509_value(ctx->certs, i);
654 PKCS7_add_certificate(p7, cert);
659 if ((si = PKCS7_add_signature(p7, ctx->signer_cert,
660 ctx->signer_key, ctx->signer_md)) == NULL) {
661 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR);
665 oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
666 if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
667 V_ASN1_OBJECT, oid)) {
668 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR);
672 certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL;
673 if (ctx->ess_cert_id_digest == NULL
674 || ctx->ess_cert_id_digest == EVP_sha1()) {
675 if ((sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs, 0)) == NULL)
678 if (!ESS_SIGNING_CERT_add(si, sc)) {
679 TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR);
683 sc2 = ESS_SIGNING_CERT_V2_new_init(ctx->ess_cert_id_digest,
684 ctx->signer_cert, certs, 0);
688 if (!ESS_SIGNING_CERT_V2_add(si, sc2)) {
689 TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_V2_ERROR);
694 if (!ts_TST_INFO_content_new(p7))
696 if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) {
697 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
700 if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) {
701 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
704 if (!PKCS7_dataFinal(p7, p7bio)) {
705 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
708 TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info);
709 p7 = NULL; /* Ownership is lost. */
710 ctx->tst_info = NULL; /* Ownership is lost. */
715 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
716 "Error during signature "
719 ESS_SIGNING_CERT_V2_free(sc2);
720 ESS_SIGNING_CERT_free(sc);
725 static int ts_TST_INFO_content_new(PKCS7 *p7)
728 ASN1_OCTET_STRING *octet_string = NULL;
730 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
731 if ((ret = PKCS7_new()) == NULL)
733 if ((ret->d.other = ASN1_TYPE_new()) == NULL)
735 ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
736 if ((octet_string = ASN1_OCTET_STRING_new()) == NULL)
738 ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string);
741 /* Add encapsulated content to signed PKCS7 structure. */
742 if (!PKCS7_set_content(p7, ret))
747 ASN1_OCTET_STRING_free(octet_string);
752 static ASN1_GENERALIZEDTIME *TS_RESP_set_genTime_with_precision(
753 ASN1_GENERALIZEDTIME *asn1_time, long sec, long usec,
756 time_t time_sec = (time_t)sec;
757 struct tm *tm = NULL, tm_result;
758 char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS];
759 char *p = genTime_str;
760 char *p_end = genTime_str + sizeof(genTime_str);
762 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
765 if ((tm = OPENSSL_gmtime(&time_sec, &tm_result)) == NULL)
769 * Put "genTime_str" in GeneralizedTime format. We work around the
770 * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST
771 * NOT include fractional seconds") and OpenSSL related functions to
772 * meet the rfc3161 requirement: "GeneralizedTime syntax can include
773 * fraction-of-second details".
775 p += BIO_snprintf(p, p_end - p,
776 "%04d%02d%02d%02d%02d%02d",
777 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
778 tm->tm_hour, tm->tm_min, tm->tm_sec);
780 BIO_snprintf(p, 2 + precision, ".%06ld", usec);
784 * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the
785 * following restrictions for a DER-encoding, which OpenSSL
786 * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't
787 * support: "The encoding MUST terminate with a "Z" (which means
788 * "Zulu" time). The decimal point element, if present, MUST be the
789 * point option ".". The fractional-seconds elements, if present,
790 * MUST omit all trailing 0's; if the elements correspond to 0, they
791 * MUST be wholly omitted, and the decimal point element also MUST be
795 * Remove trailing zeros. The dot guarantees the exit condition of
796 * this loop even if all the digits are zero.
806 if (asn1_time == NULL
807 && (asn1_time = ASN1_GENERALIZEDTIME_new()) == NULL)
809 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) {
810 ASN1_GENERALIZEDTIME_free(asn1_time);
816 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME);
820 int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX *ctx, const EVP_MD *md)
822 ctx->ess_cert_id_digest = md;