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(CMS_SignerInfo)
24 DEFINE_STACK_OF(ESS_CERT_ID)
25 DEFINE_STACK_OF(ESS_CERT_ID_V2)
27 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
31 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
34 CMS_ReceiptRequest *rr;
35 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_receiptRequest);
39 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
43 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
49 CMS_ReceiptRequest_free(rr);
54 First, get the ESS_SIGNING_CERT(V2) signed attribute from |si|.
55 Then check matching of each cert of trust |chain| with one of
56 the |cert_ids|(Hash+IssuerID) list from this ESS_SIGNING_CERT.
57 Derived from ts_check_signing_certs()
59 int ess_check_signing_certs(CMS_SignerInfo *si, STACK_OF(X509) *chain)
61 ESS_SIGNING_CERT *ss = NULL;
62 ESS_SIGNING_CERT_V2 *ssv2 = NULL;
66 if (cms_signerinfo_get_signing_cert(si, &ss) > 0 && ss->cert_ids != NULL) {
67 STACK_OF(ESS_CERT_ID) *cert_ids = ss->cert_ids;
69 cert = sk_X509_value(chain, 0);
70 if (ess_find_cert(cert_ids, cert) != 0)
74 * Check the other certificates of the chain.
75 * Fail if no signing certificate ids found for each certificate.
77 if (sk_ESS_CERT_ID_num(cert_ids) > 1) {
78 /* for each chain cert, try to find its cert id */
79 for (i = 1; i < sk_X509_num(chain); ++i) {
80 cert = sk_X509_value(chain, i);
81 if (ess_find_cert(cert_ids, cert) < 0)
85 } else if (cms_signerinfo_get_signing_cert_v2(si, &ssv2) > 0
86 && ssv2->cert_ids!= NULL) {
87 STACK_OF(ESS_CERT_ID_V2) *cert_ids_v2 = ssv2->cert_ids;
89 cert = sk_X509_value(chain, 0);
90 if (ess_find_cert_v2(cert_ids_v2, cert) != 0)
94 * Check the other certificates of the chain.
95 * Fail if no signing certificate ids found for each certificate.
97 if (sk_ESS_CERT_ID_V2_num(cert_ids_v2) > 1) {
98 /* for each chain cert, try to find its cert id */
99 for (i = 1; i < sk_X509_num(chain); ++i) {
100 cert = sk_X509_value(chain, i);
101 if (ess_find_cert_v2(cert_ids_v2, cert) < 0)
106 CMSerr(CMS_F_ESS_CHECK_SIGNING_CERTS,
107 CMS_R_ESS_NO_SIGNING_CERTID_ATTRIBUTE);
113 CMSerr(CMS_F_ESS_CHECK_SIGNING_CERTS,
114 CMS_R_ESS_SIGNING_CERTID_MISMATCH_ERROR);
116 ESS_SIGNING_CERT_free(ss);
117 ESS_SIGNING_CERT_V2_free(ssv2);
121 CMS_ReceiptRequest *CMS_ReceiptRequest_create0_with_libctx(
122 unsigned char *id, int idlen, int allorfirst,
123 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo,
124 OPENSSL_CTX *libctx, const char *propq)
126 CMS_ReceiptRequest *rr;
128 rr = CMS_ReceiptRequest_new();
132 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
134 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
136 if (RAND_bytes_ex(libctx, rr->signedContentIdentifier->data, 32) <= 0)
140 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
141 rr->receiptsTo = receiptsTo;
143 if (receiptList != NULL) {
144 rr->receiptsFrom->type = 1;
145 rr->receiptsFrom->d.receiptList = receiptList;
147 rr->receiptsFrom->type = 0;
148 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
154 CMSerr(0, ERR_R_MALLOC_FAILURE);
157 CMS_ReceiptRequest_free(rr);
162 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(
163 unsigned char *id, int idlen, int allorfirst,
164 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo)
166 return CMS_ReceiptRequest_create0_with_libctx(id, idlen, allorfirst,
167 receiptList, receiptsTo,
171 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
173 unsigned char *rrder = NULL;
176 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
180 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
181 V_ASN1_SEQUENCE, rrder, rrderlen))
188 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
196 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
199 STACK_OF(GENERAL_NAMES) **plist,
200 STACK_OF(GENERAL_NAMES) **prto)
203 *pcid = rr->signedContentIdentifier;
204 if (rr->receiptsFrom->type == 0) {
205 if (pallorfirst != NULL)
206 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
210 if (pallorfirst != NULL)
213 *plist = rr->receiptsFrom->d.receiptList;
216 *prto = rr->receiptsTo;
219 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
221 static int cms_msgSigDigest(CMS_SignerInfo *si,
222 unsigned char *dig, unsigned int *diglen)
224 const EVP_MD *md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
228 if (!asn1_item_digest_with_libctx(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
229 si->signedAttrs, dig, diglen,
230 si->cms_ctx->libctx, si->cms_ctx->propq))
235 /* Add a msgSigDigest attribute to a SignerInfo */
237 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
239 unsigned char dig[EVP_MAX_MD_SIZE];
242 if (!cms_msgSigDigest(src, dig, &diglen)) {
243 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
246 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
247 V_ASN1_OCTET_STRING, dig, diglen)) {
248 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
254 /* Verify signed receipt after it has already passed normal CMS verify */
256 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
259 CMS_ReceiptRequest *rr = NULL;
260 CMS_Receipt *rct = NULL;
261 STACK_OF(CMS_SignerInfo) *sis, *osis;
262 CMS_SignerInfo *si, *osi = NULL;
263 ASN1_OCTET_STRING *msig, **pcont;
265 unsigned char dig[EVP_MAX_MD_SIZE];
268 /* Get SignerInfos, also checks SignedData content type */
269 osis = CMS_get0_SignerInfos(req_cms);
270 sis = CMS_get0_SignerInfos(cms);
274 if (sk_CMS_SignerInfo_num(sis) != 1) {
275 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
279 /* Check receipt content type */
280 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
281 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
285 /* Extract and decode receipt content */
286 pcont = CMS_get0_content(cms);
287 if (pcont == NULL || *pcont == NULL) {
288 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
292 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
295 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
299 /* Locate original request */
301 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
302 osi = sk_CMS_SignerInfo_value(osis, i);
303 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
307 if (i == sk_CMS_SignerInfo_num(osis)) {
308 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
312 si = sk_CMS_SignerInfo_value(sis, 0);
314 /* Get msgSigDigest value and compare */
316 msig = CMS_signed_get0_data_by_OBJ(si,
318 (NID_id_smime_aa_msgSigDigest), -3,
319 V_ASN1_OCTET_STRING);
322 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
326 if (!cms_msgSigDigest(osi, dig, &diglen)) {
327 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
331 if (diglen != (unsigned int)msig->length) {
332 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
336 if (memcmp(dig, msig->data, diglen)) {
337 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
338 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
342 /* Compare content types */
344 octype = CMS_signed_get0_data_by_OBJ(osi,
345 OBJ_nid2obj(NID_pkcs9_contentType),
348 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
352 /* Compare details in receipt request */
354 if (OBJ_cmp(octype, rct->contentType)) {
355 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
359 /* Get original receipt request details */
361 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
362 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
366 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
367 rct->signedContentIdentifier)) {
368 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
375 CMS_ReceiptRequest_free(rr);
376 M_ASN1_free_of(rct, CMS_Receipt);
382 * Encode a Receipt into an OCTET STRING read for including into content of a
383 * SignedData ContentInfo.
386 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
389 CMS_ReceiptRequest *rr = NULL;
391 ASN1_OCTET_STRING *os = NULL;
393 /* Get original receipt request */
395 /* Get original receipt request details */
397 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
398 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
402 /* Get original content type */
404 ctype = CMS_signed_get0_data_by_OBJ(si,
405 OBJ_nid2obj(NID_pkcs9_contentType),
408 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
413 rct.contentType = ctype;
414 rct.signedContentIdentifier = rr->signedContentIdentifier;
415 rct.originatorSignatureValue = si->signature;
417 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
420 CMS_ReceiptRequest_free(rr);
425 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
428 int cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
430 ASN1_STRING *seq = NULL;
431 unsigned char *p, *pp = NULL;
434 /* Add SigningCertificateV2 signed attribute to the signer info. */
435 len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
436 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
439 i2d_ESS_SIGNING_CERT_V2(sc, &p);
440 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
444 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
445 V_ASN1_SEQUENCE, seq, -1))
447 ASN1_STRING_free(seq);
450 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
451 ASN1_STRING_free(seq);
457 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
460 int cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
462 ASN1_STRING *seq = NULL;
463 unsigned char *p, *pp = NULL;
466 /* Add SigningCertificate signed attribute to the signer info. */
467 len = i2d_ESS_SIGNING_CERT(sc, NULL);
468 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
471 i2d_ESS_SIGNING_CERT(sc, &p);
472 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
476 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
477 V_ASN1_SEQUENCE, seq, -1))
479 ASN1_STRING_free(seq);
482 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
483 ASN1_STRING_free(seq);