1 /* crypto/ts/ts_resp_sign.c */
3 * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2006-2018 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).
63 #if defined(OPENSSL_SYS_UNIX)
64 # include <sys/time.h>
67 #include <openssl/objects.h>
68 #include <openssl/ts.h>
69 #include <openssl/pkcs7.h>
71 /* Private function declarations. */
73 static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *);
74 static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec);
75 static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *);
77 static void TS_RESP_CTX_init(TS_RESP_CTX *ctx);
78 static void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx);
79 static int TS_RESP_check_request(TS_RESP_CTX *ctx);
80 static ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx);
81 static TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx,
83 static int TS_RESP_process_extensions(TS_RESP_CTX *ctx);
84 static int TS_RESP_sign(TS_RESP_CTX *ctx);
86 static ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert,
87 STACK_OF(X509) *certs);
88 static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed);
89 static int TS_TST_INFO_content_new(PKCS7 *p7);
90 static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc);
92 static ASN1_GENERALIZEDTIME
93 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long,
96 /* Default callbacks for response generation. */
98 static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data)
100 ASN1_INTEGER *serial = ASN1_INTEGER_new();
103 if (!ASN1_INTEGER_set(serial, 1))
107 TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE);
108 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
109 "Error during serial number generation.");
113 #if defined(OPENSSL_SYS_UNIX)
115 /* Use the gettimeofday function call. */
116 static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
117 long *sec, long *usec)
120 if (gettimeofday(&tv, NULL) != 0) {
121 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
122 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
123 "Time is not available.");
124 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
127 /* Return time to caller. */
136 /* Use the time function call that provides only seconds precision. */
137 static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
138 long *sec, long *usec)
141 if (time(&t) == (time_t)-1) {
142 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
143 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
144 "Time is not available.");
145 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
148 /* Return time to caller, only second precision. */
157 static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext,
160 /* No extensions are processed here. */
161 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
162 "Unsupported extension.");
163 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION);
167 /* TS_RESP_CTX management functions. */
169 TS_RESP_CTX *TS_RESP_CTX_new()
173 if (!(ctx = (TS_RESP_CTX *)OPENSSL_malloc(sizeof(TS_RESP_CTX)))) {
174 TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE);
177 memset(ctx, 0, sizeof(TS_RESP_CTX));
179 /* Setting default callbacks. */
180 ctx->serial_cb = def_serial_cb;
181 ctx->time_cb = def_time_cb;
182 ctx->extension_cb = def_extension_cb;
187 void TS_RESP_CTX_free(TS_RESP_CTX *ctx)
192 X509_free(ctx->signer_cert);
193 EVP_PKEY_free(ctx->signer_key);
194 sk_X509_pop_free(ctx->certs, X509_free);
195 sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free);
196 ASN1_OBJECT_free(ctx->default_policy);
197 sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */
198 ASN1_INTEGER_free(ctx->seconds);
199 ASN1_INTEGER_free(ctx->millis);
200 ASN1_INTEGER_free(ctx->micros);
204 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer)
206 if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) {
207 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT,
208 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE);
211 if (ctx->signer_cert)
212 X509_free(ctx->signer_cert);
213 ctx->signer_cert = signer;
214 CRYPTO_add(&ctx->signer_cert->references, +1, CRYPTO_LOCK_X509);
218 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key)
221 EVP_PKEY_free(ctx->signer_key);
222 ctx->signer_key = key;
223 CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY);
228 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *def_policy)
230 if (ctx->default_policy)
231 ASN1_OBJECT_free(ctx->default_policy);
232 if (!(ctx->default_policy = OBJ_dup(def_policy)))
236 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE);
240 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 = X509_chain_up_ref(certs))) {
250 TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE);
257 int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *policy)
259 ASN1_OBJECT *copy = NULL;
261 /* Create new policy stack if necessary. */
262 if (!ctx->policies && !(ctx->policies = sk_ASN1_OBJECT_new_null()))
264 if (!(copy = OBJ_dup(policy)))
266 if (!sk_ASN1_OBJECT_push(ctx->policies, copy))
271 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE);
272 ASN1_OBJECT_free(copy);
276 int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md)
278 /* Create new md stack if necessary. */
279 if (!ctx->mds && !(ctx->mds = sk_EVP_MD_new_null()))
281 /* Add the shared md, no copy needed. */
282 if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md))
287 TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE);
291 #define TS_RESP_CTX_accuracy_free(ctx) \
292 ASN1_INTEGER_free(ctx->seconds); \
293 ctx->seconds = NULL; \
294 ASN1_INTEGER_free(ctx->millis); \
295 ctx->millis = NULL; \
296 ASN1_INTEGER_free(ctx->micros); \
299 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
300 int secs, int millis, int micros)
303 TS_RESP_CTX_accuracy_free(ctx);
304 if (secs && (!(ctx->seconds = ASN1_INTEGER_new())
305 || !ASN1_INTEGER_set(ctx->seconds, secs)))
307 if (millis && (!(ctx->millis = ASN1_INTEGER_new())
308 || !ASN1_INTEGER_set(ctx->millis, millis)))
310 if (micros && (!(ctx->micros = ASN1_INTEGER_new())
311 || !ASN1_INTEGER_set(ctx->micros, micros)))
316 TS_RESP_CTX_accuracy_free(ctx);
317 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE);
321 void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags)
326 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data)
329 ctx->serial_cb_data = data;
332 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data)
335 ctx->time_cb_data = data;
338 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
339 TS_extension_cb cb, void *data)
341 ctx->extension_cb = cb;
342 ctx->extension_cb_data = data;
345 int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
346 int status, const char *text)
348 TS_STATUS_INFO *si = NULL;
349 ASN1_UTF8STRING *utf8_text = NULL;
352 if (!(si = TS_STATUS_INFO_new()))
354 if (!ASN1_INTEGER_set(si->status, status))
357 if (!(utf8_text = ASN1_UTF8STRING_new())
358 || !ASN1_STRING_set(utf8_text, text, strlen(text)))
360 if (!si->text && !(si->text = sk_ASN1_UTF8STRING_new_null()))
362 if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text))
364 utf8_text = NULL; /* Ownership is lost. */
366 if (!TS_RESP_set_status_info(ctx->response, si))
371 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE);
372 TS_STATUS_INFO_free(si);
373 ASN1_UTF8STRING_free(utf8_text);
377 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
378 int status, const char *text)
381 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
383 if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) {
384 /* Status has not been set, set it now. */
385 ret = TS_RESP_CTX_set_status_info(ctx, status, text);
390 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure)
392 TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response);
393 if (!si->failure_info && !(si->failure_info = ASN1_BIT_STRING_new()))
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())) {
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))) {
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)))
457 /* Creating the TS_TST_INFO object. */
458 if (!(ctx->tst_info = TS_RESP_create_tst_info(ctx, policy)))
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()))
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))
620 || !TS_TST_INFO_set_serial(tst_info, serial))
622 if (!(*ctx->time_cb) (ctx, ctx->time_cb_data, &sec, &usec)
623 || !(asn1_time = TS_RESP_set_genTime_with_precision(NULL,
625 ctx->clock_precision_digits))
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()))
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()))
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())) {
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()))) {
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)))
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))) {
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()))
824 if (!sc->cert_ids && !(sc->cert_ids = sk_ESS_CERT_ID_new_null()))
827 /* Adding the signing certificate id. */
828 if (!(cid = ESS_CERT_ID_new_init(signcert, 0))
829 || !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
831 /* Adding the certificate chain ids. */
832 for (i = 0; i < sk_X509_num(certs); ++i) {
833 X509 *cert = sk_X509_value(certs, i);
834 if (!(cid = ESS_CERT_ID_new_init(cert, 1))
835 || !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
841 ESS_SIGNING_CERT_free(sc);
842 TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE);
846 static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed)
848 ESS_CERT_ID *cid = NULL;
849 GENERAL_NAME *name = NULL;
851 /* Recompute SHA1 hash of certificate if necessary (side effect). */
852 X509_check_purpose(cert, -1, 0);
854 if (!(cid = ESS_CERT_ID_new()))
856 if (!ASN1_OCTET_STRING_set(cid->hash, cert->sha1_hash,
857 sizeof(cert->sha1_hash)))
860 /* Setting the issuer/serial if requested. */
862 /* Creating issuer/serial structure. */
863 if (!cid->issuer_serial
864 && !(cid->issuer_serial = ESS_ISSUER_SERIAL_new()))
866 /* Creating general name from the certificate issuer. */
867 if (!(name = GENERAL_NAME_new()))
869 name->type = GEN_DIRNAME;
870 if (!(name->d.dirn = X509_NAME_dup(cert->cert_info->issuer)))
872 if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name))
874 name = NULL; /* Ownership is lost. */
875 /* Setting the serial number. */
876 ASN1_INTEGER_free(cid->issuer_serial->serial);
877 if (!(cid->issuer_serial->serial =
878 ASN1_INTEGER_dup(cert->cert_info->serialNumber)))
884 GENERAL_NAME_free(name);
885 ESS_CERT_ID_free(cid);
886 TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE);
890 static int TS_TST_INFO_content_new(PKCS7 *p7)
893 ASN1_OCTET_STRING *octet_string = NULL;
895 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
896 if (!(ret = PKCS7_new()))
898 if (!(ret->d.other = ASN1_TYPE_new()))
900 ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
901 if (!(octet_string = ASN1_OCTET_STRING_new()))
903 ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string);
906 /* Add encapsulated content to signed PKCS7 structure. */
907 if (!PKCS7_set_content(p7, ret))
912 ASN1_OCTET_STRING_free(octet_string);
917 static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc)
919 ASN1_STRING *seq = NULL;
920 unsigned char *p, *pp = NULL;
923 len = i2d_ESS_SIGNING_CERT(sc, NULL);
924 if (!(pp = (unsigned char *)OPENSSL_malloc(len))) {
925 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
929 i2d_ESS_SIGNING_CERT(sc, &p);
930 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
931 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
936 return PKCS7_add_signed_attribute(si,
937 NID_id_smime_aa_signingCertificate,
938 V_ASN1_SEQUENCE, seq);
940 ASN1_STRING_free(seq);
946 static ASN1_GENERALIZEDTIME
947 *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time,
948 long sec, long usec, unsigned precision)
950 time_t time_sec = (time_t)sec;
951 struct tm *tm = NULL;
952 struct tm result = {0};
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 = OPENSSL_gmtime(&time_sec, &result)))
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 && !(asn1_time = M_ASN1_GENERALIZEDTIME_new()))
1013 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) {
1014 ASN1_GENERALIZEDTIME_free(asn1_time);
1020 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME);