2 * Copyright 2008-2020 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
10 #include "internal/cryptlib.h"
11 #include <openssl/asn1t.h>
12 #include <openssl/pem.h>
13 #include <openssl/rand.h>
14 #include <openssl/x509v3.h>
15 #include <openssl/err.h>
16 #include <openssl/cms.h>
17 #include <openssl/ess.h>
18 #include "crypto/ess.h"
19 #include "crypto/cms.h"
20 #include "crypto/x509.h"
21 #include "cms_local.h"
23 DEFINE_STACK_OF(GENERAL_NAMES)
24 DEFINE_STACK_OF(CMS_SignerInfo)
25 DEFINE_STACK_OF(ESS_CERT_ID)
26 DEFINE_STACK_OF(ESS_CERT_ID_V2)
29 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
33 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
36 CMS_ReceiptRequest *rr;
37 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_receiptRequest);
41 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
45 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
51 CMS_ReceiptRequest_free(rr);
56 First, get the ESS_SIGNING_CERT(V2) signed attribute from |si|.
57 Then check matching of each cert of trust |chain| with one of
58 the |cert_ids|(Hash+IssuerID) list from this ESS_SIGNING_CERT.
59 Derived from ts_check_signing_certs()
61 int ess_check_signing_certs(CMS_SignerInfo *si, STACK_OF(X509) *chain)
63 ESS_SIGNING_CERT *ss = NULL;
64 ESS_SIGNING_CERT_V2 *ssv2 = NULL;
68 if (cms_signerinfo_get_signing_cert(si, &ss) > 0 && ss->cert_ids != NULL) {
69 STACK_OF(ESS_CERT_ID) *cert_ids = ss->cert_ids;
71 cert = sk_X509_value(chain, 0);
72 if (ess_find_cert(cert_ids, cert) != 0)
76 * Check the other certificates of the chain.
77 * Fail if no signing certificate ids found for each certificate.
79 if (sk_ESS_CERT_ID_num(cert_ids) > 1) {
80 /* for each chain cert, try to find its cert id */
81 for (i = 1; i < sk_X509_num(chain); ++i) {
82 cert = sk_X509_value(chain, i);
83 if (ess_find_cert(cert_ids, cert) < 0)
87 } else if (cms_signerinfo_get_signing_cert_v2(si, &ssv2) > 0
88 && ssv2->cert_ids!= NULL) {
89 STACK_OF(ESS_CERT_ID_V2) *cert_ids_v2 = ssv2->cert_ids;
91 cert = sk_X509_value(chain, 0);
92 if (ess_find_cert_v2(cert_ids_v2, cert) != 0)
96 * Check the other certificates of the chain.
97 * Fail if no signing certificate ids found for each certificate.
99 if (sk_ESS_CERT_ID_V2_num(cert_ids_v2) > 1) {
100 /* for each chain cert, try to find its cert id */
101 for (i = 1; i < sk_X509_num(chain); ++i) {
102 cert = sk_X509_value(chain, i);
103 if (ess_find_cert_v2(cert_ids_v2, cert) < 0)
108 CMSerr(CMS_F_ESS_CHECK_SIGNING_CERTS,
109 CMS_R_ESS_NO_SIGNING_CERTID_ATTRIBUTE);
115 CMSerr(CMS_F_ESS_CHECK_SIGNING_CERTS,
116 CMS_R_ESS_SIGNING_CERTID_MISMATCH_ERROR);
118 ESS_SIGNING_CERT_free(ss);
119 ESS_SIGNING_CERT_V2_free(ssv2);
123 CMS_ReceiptRequest *CMS_ReceiptRequest_create0_with_libctx(
124 unsigned char *id, int idlen, int allorfirst,
125 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo,
126 OPENSSL_CTX *libctx, const char *propq)
128 CMS_ReceiptRequest *rr;
130 rr = CMS_ReceiptRequest_new();
134 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
136 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
138 if (RAND_bytes_ex(libctx, rr->signedContentIdentifier->data, 32) <= 0)
142 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
143 rr->receiptsTo = receiptsTo;
145 if (receiptList != NULL) {
146 rr->receiptsFrom->type = 1;
147 rr->receiptsFrom->d.receiptList = receiptList;
149 rr->receiptsFrom->type = 0;
150 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
156 CMSerr(0, ERR_R_MALLOC_FAILURE);
159 CMS_ReceiptRequest_free(rr);
164 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(
165 unsigned char *id, int idlen, int allorfirst,
166 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo)
168 return CMS_ReceiptRequest_create0_with_libctx(id, idlen, allorfirst,
169 receiptList, receiptsTo,
173 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
175 unsigned char *rrder = NULL;
178 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
182 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
183 V_ASN1_SEQUENCE, rrder, rrderlen))
190 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
198 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
201 STACK_OF(GENERAL_NAMES) **plist,
202 STACK_OF(GENERAL_NAMES) **prto)
205 *pcid = rr->signedContentIdentifier;
206 if (rr->receiptsFrom->type == 0) {
207 if (pallorfirst != NULL)
208 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
212 if (pallorfirst != NULL)
215 *plist = rr->receiptsFrom->d.receiptList;
218 *prto = rr->receiptsTo;
221 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
223 static int cms_msgSigDigest(CMS_SignerInfo *si,
224 unsigned char *dig, unsigned int *diglen)
226 const EVP_MD *md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
230 if (!asn1_item_digest_with_libctx(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
231 si->signedAttrs, dig, diglen,
232 si->cms_ctx->libctx, si->cms_ctx->propq))
237 /* Add a msgSigDigest attribute to a SignerInfo */
239 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
241 unsigned char dig[EVP_MAX_MD_SIZE];
244 if (!cms_msgSigDigest(src, dig, &diglen)) {
245 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
248 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
249 V_ASN1_OCTET_STRING, dig, diglen)) {
250 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
256 /* Verify signed receipt after it has already passed normal CMS verify */
258 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
261 CMS_ReceiptRequest *rr = NULL;
262 CMS_Receipt *rct = NULL;
263 STACK_OF(CMS_SignerInfo) *sis, *osis;
264 CMS_SignerInfo *si, *osi = NULL;
265 ASN1_OCTET_STRING *msig, **pcont;
267 unsigned char dig[EVP_MAX_MD_SIZE];
270 /* Get SignerInfos, also checks SignedData content type */
271 osis = CMS_get0_SignerInfos(req_cms);
272 sis = CMS_get0_SignerInfos(cms);
276 if (sk_CMS_SignerInfo_num(sis) != 1) {
277 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
281 /* Check receipt content type */
282 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
283 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
287 /* Extract and decode receipt content */
288 pcont = CMS_get0_content(cms);
289 if (pcont == NULL || *pcont == NULL) {
290 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
294 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
297 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
301 /* Locate original request */
303 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
304 osi = sk_CMS_SignerInfo_value(osis, i);
305 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
309 if (i == sk_CMS_SignerInfo_num(osis)) {
310 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
314 si = sk_CMS_SignerInfo_value(sis, 0);
316 /* Get msgSigDigest value and compare */
318 msig = CMS_signed_get0_data_by_OBJ(si,
320 (NID_id_smime_aa_msgSigDigest), -3,
321 V_ASN1_OCTET_STRING);
324 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
328 if (!cms_msgSigDigest(osi, dig, &diglen)) {
329 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
333 if (diglen != (unsigned int)msig->length) {
334 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
338 if (memcmp(dig, msig->data, diglen)) {
339 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
340 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
344 /* Compare content types */
346 octype = CMS_signed_get0_data_by_OBJ(osi,
347 OBJ_nid2obj(NID_pkcs9_contentType),
350 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
354 /* Compare details in receipt request */
356 if (OBJ_cmp(octype, rct->contentType)) {
357 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
361 /* Get original receipt request details */
363 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
364 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
368 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
369 rct->signedContentIdentifier)) {
370 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
377 CMS_ReceiptRequest_free(rr);
378 M_ASN1_free_of(rct, CMS_Receipt);
384 * Encode a Receipt into an OCTET STRING read for including into content of a
385 * SignedData ContentInfo.
388 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
391 CMS_ReceiptRequest *rr = NULL;
393 ASN1_OCTET_STRING *os = NULL;
395 /* Get original receipt request */
397 /* Get original receipt request details */
399 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
400 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
404 /* Get original content type */
406 ctype = CMS_signed_get0_data_by_OBJ(si,
407 OBJ_nid2obj(NID_pkcs9_contentType),
410 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
415 rct.contentType = ctype;
416 rct.signedContentIdentifier = rr->signedContentIdentifier;
417 rct.originatorSignatureValue = si->signature;
419 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
422 CMS_ReceiptRequest_free(rr);
427 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
430 int cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
432 ASN1_STRING *seq = NULL;
433 unsigned char *p, *pp;
436 /* Add SigningCertificateV2 signed attribute to the signer info. */
437 len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
438 if ((pp = OPENSSL_malloc(len)) == NULL)
441 i2d_ESS_SIGNING_CERT_V2(sc, &p);
442 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
446 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
447 V_ASN1_SEQUENCE, seq, -1))
449 ASN1_STRING_free(seq);
452 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
453 ASN1_STRING_free(seq);
459 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
462 int cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
464 ASN1_STRING *seq = NULL;
465 unsigned char *p, *pp;
468 /* Add SigningCertificate signed attribute to the signer info. */
469 len = i2d_ESS_SIGNING_CERT(sc, NULL);
470 if ((pp = OPENSSL_malloc(len)) == NULL)
473 i2d_ESS_SIGNING_CERT(sc, &p);
474 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
478 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
479 V_ASN1_SEQUENCE, seq, -1))
481 ASN1_STRING_free(seq);
484 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
485 ASN1_STRING_free(seq);