2 * Copyright 2008-2021 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/x509.h"
20 #include "cms_local.h"
22 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
26 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
29 CMS_ReceiptRequest *rr;
30 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_receiptRequest);
34 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
38 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
44 CMS_ReceiptRequest_free(rr);
49 * Returns 0 if attribute is not found, 1 if found,
50 * or -1 on attribute parsing failure.
52 static int ossl_cms_signerinfo_get_signing_cert(const CMS_SignerInfo *si,
53 ESS_SIGNING_CERT **psc)
57 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_signingCertificate);
61 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
65 sc = ASN1_item_unpack(str, ASN1_ITEM_rptr(ESS_SIGNING_CERT));
71 ESS_SIGNING_CERT_free(sc);
76 * Returns 0 if attribute is not found, 1 if found,
77 * or -1 on attribute parsing failure.
79 static int ossl_cms_signerinfo_get_signing_cert_v2(const CMS_SignerInfo *si,
80 ESS_SIGNING_CERT_V2 **psc)
83 ESS_SIGNING_CERT_V2 *sc;
84 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_signingCertificateV2);
88 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
92 sc = ASN1_item_unpack(str, ASN1_ITEM_rptr(ESS_SIGNING_CERT_V2));
98 ESS_SIGNING_CERT_V2_free(sc);
102 int ossl_cms_check_signing_certs(const CMS_SignerInfo *si,
103 const STACK_OF(X509) *chain)
105 ESS_SIGNING_CERT *ss = NULL;
106 ESS_SIGNING_CERT_V2 *ssv2 = NULL;
107 int ret = ossl_cms_signerinfo_get_signing_cert(si, &ss) >= 0
108 && ossl_cms_signerinfo_get_signing_cert_v2(si, &ssv2) >= 0
109 && OSSL_ESS_check_signing_certs(ss, ssv2, chain, 1) > 0;
111 ESS_SIGNING_CERT_free(ss);
112 ESS_SIGNING_CERT_V2_free(ssv2);
116 CMS_ReceiptRequest *CMS_ReceiptRequest_create0_ex(
117 unsigned char *id, int idlen, int allorfirst,
118 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo,
119 OSSL_LIB_CTX *libctx)
121 CMS_ReceiptRequest *rr;
123 rr = CMS_ReceiptRequest_new();
127 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
129 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
131 if (RAND_bytes_ex(libctx, rr->signedContentIdentifier->data, 32,
136 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
137 rr->receiptsTo = receiptsTo;
139 if (receiptList != NULL) {
140 rr->receiptsFrom->type = 1;
141 rr->receiptsFrom->d.receiptList = receiptList;
143 rr->receiptsFrom->type = 0;
144 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
150 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
153 CMS_ReceiptRequest_free(rr);
158 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(
159 unsigned char *id, int idlen, int allorfirst,
160 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo)
162 return CMS_ReceiptRequest_create0_ex(id, idlen, allorfirst, receiptList,
166 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
168 unsigned char *rrder = NULL;
171 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
175 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
176 V_ASN1_SEQUENCE, rrder, rrderlen))
183 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
191 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
194 STACK_OF(GENERAL_NAMES) **plist,
195 STACK_OF(GENERAL_NAMES) **prto)
198 *pcid = rr->signedContentIdentifier;
199 if (rr->receiptsFrom->type == 0) {
200 if (pallorfirst != NULL)
201 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
205 if (pallorfirst != NULL)
208 *plist = rr->receiptsFrom->d.receiptList;
211 *prto = rr->receiptsTo;
214 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
216 static int cms_msgSigDigest(CMS_SignerInfo *si,
217 unsigned char *dig, unsigned int *diglen)
219 const EVP_MD *md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
223 if (!ossl_asn1_item_digest_ex(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
224 si->signedAttrs, dig, diglen,
225 ossl_cms_ctx_get0_libctx(si->cms_ctx),
226 ossl_cms_ctx_get0_propq(si->cms_ctx)))
231 /* Add a msgSigDigest attribute to a SignerInfo */
233 int ossl_cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
235 unsigned char dig[EVP_MAX_MD_SIZE];
238 if (!cms_msgSigDigest(src, dig, &diglen)) {
239 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_ERROR);
242 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
243 V_ASN1_OCTET_STRING, dig, diglen)) {
244 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
250 /* Verify signed receipt after it has already passed normal CMS verify */
252 int ossl_cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
255 CMS_ReceiptRequest *rr = NULL;
256 CMS_Receipt *rct = NULL;
257 STACK_OF(CMS_SignerInfo) *sis, *osis;
258 CMS_SignerInfo *si, *osi = NULL;
259 ASN1_OCTET_STRING *msig, **pcont;
261 unsigned char dig[EVP_MAX_MD_SIZE];
264 /* Get SignerInfos, also checks SignedData content type */
265 osis = CMS_get0_SignerInfos(req_cms);
266 sis = CMS_get0_SignerInfos(cms);
270 if (sk_CMS_SignerInfo_num(sis) != 1) {
271 ERR_raise(ERR_LIB_CMS, CMS_R_NEED_ONE_SIGNER);
275 /* Check receipt content type */
276 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
277 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_A_SIGNED_RECEIPT);
281 /* Extract and decode receipt content */
282 pcont = CMS_get0_content(cms);
283 if (pcont == NULL || *pcont == NULL) {
284 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT);
288 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
291 ERR_raise(ERR_LIB_CMS, CMS_R_RECEIPT_DECODE_ERROR);
295 /* Locate original request */
297 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
298 osi = sk_CMS_SignerInfo_value(osis, i);
299 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
303 if (i == sk_CMS_SignerInfo_num(osis)) {
304 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_SIGNATURE);
308 si = sk_CMS_SignerInfo_value(sis, 0);
310 /* Get msgSigDigest value and compare */
312 msig = CMS_signed_get0_data_by_OBJ(si,
314 (NID_id_smime_aa_msgSigDigest), -3,
315 V_ASN1_OCTET_STRING);
318 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MSGSIGDIGEST);
322 if (!cms_msgSigDigest(osi, dig, &diglen)) {
323 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_ERROR);
327 if (diglen != (unsigned int)msig->length) {
328 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
332 if (memcmp(dig, msig->data, diglen)) {
333 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
337 /* Compare content types */
339 octype = CMS_signed_get0_data_by_OBJ(osi,
340 OBJ_nid2obj(NID_pkcs9_contentType),
343 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT_TYPE);
347 /* Compare details in receipt request */
349 if (OBJ_cmp(octype, rct->contentType)) {
350 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_MISMATCH);
354 /* Get original receipt request details */
356 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
357 ERR_raise(ERR_LIB_CMS, CMS_R_NO_RECEIPT_REQUEST);
361 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
362 rct->signedContentIdentifier)) {
363 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENTIDENTIFIER_MISMATCH);
370 CMS_ReceiptRequest_free(rr);
371 M_ASN1_free_of(rct, CMS_Receipt);
377 * Encode a Receipt into an OCTET STRING read for including into content of a
378 * SignedData ContentInfo.
381 ASN1_OCTET_STRING *ossl_cms_encode_Receipt(CMS_SignerInfo *si)
384 CMS_ReceiptRequest *rr = NULL;
386 ASN1_OCTET_STRING *os = NULL;
388 /* Get original receipt request */
390 /* Get original receipt request details */
392 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
393 ERR_raise(ERR_LIB_CMS, CMS_R_NO_RECEIPT_REQUEST);
397 /* Get original content type */
399 ctype = CMS_signed_get0_data_by_OBJ(si,
400 OBJ_nid2obj(NID_pkcs9_contentType),
403 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT_TYPE);
408 rct.contentType = ctype;
409 rct.signedContentIdentifier = rr->signedContentIdentifier;
410 rct.originatorSignatureValue = si->signature;
412 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
415 CMS_ReceiptRequest_free(rr);