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/cms.h"
20 #include "crypto/x509.h"
21 #include "cms_local.h"
23 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
27 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
30 CMS_ReceiptRequest *rr;
31 ASN1_OBJECT *obj = OBJ_nid2obj(NID_id_smime_aa_receiptRequest);
35 str = CMS_signed_get0_data_by_OBJ(si, obj, -3, V_ASN1_SEQUENCE);
39 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
45 CMS_ReceiptRequest_free(rr);
50 First, get the ESS_SIGNING_CERT(V2) signed attribute from |si|.
51 Then check matching of each cert of trust |chain| with one of
52 the |cert_ids|(Hash+IssuerID) list from this ESS_SIGNING_CERT.
53 Derived from ts_check_signing_certs()
55 int ossl_ess_check_signing_certs(CMS_SignerInfo *si, STACK_OF(X509) *chain)
57 ESS_SIGNING_CERT *ss = NULL;
58 ESS_SIGNING_CERT_V2 *ssv2 = NULL;
62 if (ossl_cms_signerinfo_get_signing_cert(si, &ss) > 0
63 && ss->cert_ids != NULL) {
64 STACK_OF(ESS_CERT_ID) *cert_ids = ss->cert_ids;
66 cert = sk_X509_value(chain, 0);
67 if (ossl_ess_find_cert(cert_ids, cert) != 0)
71 * Check the other certificates of the chain.
72 * Fail if no signing certificate ids found for each certificate.
74 if (sk_ESS_CERT_ID_num(cert_ids) > 1) {
75 /* for each chain cert, try to find its cert id */
76 for (i = 1; i < sk_X509_num(chain); ++i) {
77 cert = sk_X509_value(chain, i);
78 if (ossl_ess_find_cert(cert_ids, cert) < 0)
82 } else if (ossl_cms_signerinfo_get_signing_cert_v2(si, &ssv2) > 0
83 && ssv2->cert_ids!= NULL) {
84 STACK_OF(ESS_CERT_ID_V2) *cert_ids_v2 = ssv2->cert_ids;
86 cert = sk_X509_value(chain, 0);
87 if (ossl_ess_find_cert_v2(cert_ids_v2, cert) != 0)
91 * Check the other certificates of the chain.
92 * Fail if no signing certificate ids found for each certificate.
94 if (sk_ESS_CERT_ID_V2_num(cert_ids_v2) > 1) {
95 /* for each chain cert, try to find its cert id */
96 for (i = 1; i < sk_X509_num(chain); ++i) {
97 cert = sk_X509_value(chain, i);
98 if (ossl_ess_find_cert_v2(cert_ids_v2, cert) < 0)
103 ERR_raise(ERR_LIB_CMS, CMS_R_ESS_NO_SIGNING_CERTID_ATTRIBUTE);
109 ERR_raise(ERR_LIB_CMS, CMS_R_ESS_SIGNING_CERTID_MISMATCH_ERROR);
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, const char *propq)
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) <= 0)
135 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
136 rr->receiptsTo = receiptsTo;
138 if (receiptList != NULL) {
139 rr->receiptsFrom->type = 1;
140 rr->receiptsFrom->d.receiptList = receiptList;
142 rr->receiptsFrom->type = 0;
143 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
149 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
152 CMS_ReceiptRequest_free(rr);
157 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(
158 unsigned char *id, int idlen, int allorfirst,
159 STACK_OF(GENERAL_NAMES) *receiptList, STACK_OF(GENERAL_NAMES) *receiptsTo)
161 return CMS_ReceiptRequest_create0_ex(id, idlen, allorfirst, receiptList,
162 receiptsTo, NULL, NULL);
165 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
167 unsigned char *rrder = NULL;
170 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
174 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
175 V_ASN1_SEQUENCE, rrder, rrderlen))
182 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
190 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
193 STACK_OF(GENERAL_NAMES) **plist,
194 STACK_OF(GENERAL_NAMES) **prto)
197 *pcid = rr->signedContentIdentifier;
198 if (rr->receiptsFrom->type == 0) {
199 if (pallorfirst != NULL)
200 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
204 if (pallorfirst != NULL)
207 *plist = rr->receiptsFrom->d.receiptList;
210 *prto = rr->receiptsTo;
213 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
215 static int cms_msgSigDigest(CMS_SignerInfo *si,
216 unsigned char *dig, unsigned int *diglen)
218 const EVP_MD *md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
222 if (!asn1_item_digest_ex(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
223 si->signedAttrs, dig, diglen,
224 ossl_cms_ctx_get0_libctx(si->cms_ctx),
225 ossl_cms_ctx_get0_propq(si->cms_ctx)))
230 /* Add a msgSigDigest attribute to a SignerInfo */
232 int ossl_cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
234 unsigned char dig[EVP_MAX_MD_SIZE];
237 if (!cms_msgSigDigest(src, dig, &diglen)) {
238 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_ERROR);
241 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
242 V_ASN1_OCTET_STRING, dig, diglen)) {
243 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
249 /* Verify signed receipt after it has already passed normal CMS verify */
251 int ossl_cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
254 CMS_ReceiptRequest *rr = NULL;
255 CMS_Receipt *rct = NULL;
256 STACK_OF(CMS_SignerInfo) *sis, *osis;
257 CMS_SignerInfo *si, *osi = NULL;
258 ASN1_OCTET_STRING *msig, **pcont;
260 unsigned char dig[EVP_MAX_MD_SIZE];
263 /* Get SignerInfos, also checks SignedData content type */
264 osis = CMS_get0_SignerInfos(req_cms);
265 sis = CMS_get0_SignerInfos(cms);
269 if (sk_CMS_SignerInfo_num(sis) != 1) {
270 ERR_raise(ERR_LIB_CMS, CMS_R_NEED_ONE_SIGNER);
274 /* Check receipt content type */
275 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
276 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_A_SIGNED_RECEIPT);
280 /* Extract and decode receipt content */
281 pcont = CMS_get0_content(cms);
282 if (pcont == NULL || *pcont == NULL) {
283 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT);
287 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
290 ERR_raise(ERR_LIB_CMS, CMS_R_RECEIPT_DECODE_ERROR);
294 /* Locate original request */
296 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
297 osi = sk_CMS_SignerInfo_value(osis, i);
298 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
302 if (i == sk_CMS_SignerInfo_num(osis)) {
303 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_SIGNATURE);
307 si = sk_CMS_SignerInfo_value(sis, 0);
309 /* Get msgSigDigest value and compare */
311 msig = CMS_signed_get0_data_by_OBJ(si,
313 (NID_id_smime_aa_msgSigDigest), -3,
314 V_ASN1_OCTET_STRING);
317 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MSGSIGDIGEST);
321 if (!cms_msgSigDigest(osi, dig, &diglen)) {
322 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_ERROR);
326 if (diglen != (unsigned int)msig->length) {
327 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
331 if (memcmp(dig, msig->data, diglen)) {
332 ERR_raise(ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
336 /* Compare content types */
338 octype = CMS_signed_get0_data_by_OBJ(osi,
339 OBJ_nid2obj(NID_pkcs9_contentType),
342 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT_TYPE);
346 /* Compare details in receipt request */
348 if (OBJ_cmp(octype, rct->contentType)) {
349 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_MISMATCH);
353 /* Get original receipt request details */
355 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
356 ERR_raise(ERR_LIB_CMS, CMS_R_NO_RECEIPT_REQUEST);
360 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
361 rct->signedContentIdentifier)) {
362 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENTIDENTIFIER_MISMATCH);
369 CMS_ReceiptRequest_free(rr);
370 M_ASN1_free_of(rct, CMS_Receipt);
376 * Encode a Receipt into an OCTET STRING read for including into content of a
377 * SignedData ContentInfo.
380 ASN1_OCTET_STRING *ossl_cms_encode_Receipt(CMS_SignerInfo *si)
383 CMS_ReceiptRequest *rr = NULL;
385 ASN1_OCTET_STRING *os = NULL;
387 /* Get original receipt request */
389 /* Get original receipt request details */
391 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
392 ERR_raise(ERR_LIB_CMS, CMS_R_NO_RECEIPT_REQUEST);
396 /* Get original content type */
398 ctype = CMS_signed_get0_data_by_OBJ(si,
399 OBJ_nid2obj(NID_pkcs9_contentType),
402 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT_TYPE);
407 rct.contentType = ctype;
408 rct.signedContentIdentifier = rr->signedContentIdentifier;
409 rct.originatorSignatureValue = si->signature;
411 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
414 CMS_ReceiptRequest_free(rr);
419 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
422 int ossl_cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
424 ASN1_STRING *seq = NULL;
425 unsigned char *p, *pp = NULL;
428 /* Add SigningCertificateV2 signed attribute to the signer info. */
429 len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
430 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
433 i2d_ESS_SIGNING_CERT_V2(sc, &p);
434 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
438 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
439 V_ASN1_SEQUENCE, seq, -1))
441 ASN1_STRING_free(seq);
444 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
445 ASN1_STRING_free(seq);
451 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
454 int ossl_cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
456 ASN1_STRING *seq = NULL;
457 unsigned char *p, *pp = NULL;
460 /* Add SigningCertificate signed attribute to the signer info. */
461 len = i2d_ESS_SIGNING_CERT(sc, NULL);
462 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
465 i2d_ESS_SIGNING_CERT(sc, &p);
466 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
470 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
471 V_ASN1_SEQUENCE, seq, -1))
473 ASN1_STRING_free(seq);
476 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
477 ASN1_STRING_free(seq);