2 * Copyright 2008-2019 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 "cms_local.h"
19 #include "crypto/ess.h"
20 #include "crypto/cms.h"
22 DEFINE_STACK_OF(GENERAL_NAMES)
23 DEFINE_STACK_OF(CMS_SignerInfo)
25 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
29 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
32 CMS_ReceiptRequest *rr = NULL;
35 str = CMS_signed_get0_data_by_OBJ(si,
37 (NID_id_smime_aa_receiptRequest), -3,
42 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
48 CMS_ReceiptRequest_free(rr);
52 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
54 STACK_OF(GENERAL_NAMES)
55 *receiptList, STACK_OF(GENERAL_NAMES)
58 CMS_ReceiptRequest *rr = NULL;
60 rr = CMS_ReceiptRequest_new();
64 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
66 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
68 if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0)
72 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
73 rr->receiptsTo = receiptsTo;
76 rr->receiptsFrom->type = 1;
77 rr->receiptsFrom->d.receiptList = receiptList;
79 rr->receiptsFrom->type = 0;
80 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
86 CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
89 CMS_ReceiptRequest_free(rr);
94 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
96 unsigned char *rrder = NULL;
99 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
103 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
104 V_ASN1_SEQUENCE, rrder, rrderlen))
111 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
119 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
122 STACK_OF(GENERAL_NAMES) **plist,
123 STACK_OF(GENERAL_NAMES) **prto)
126 *pcid = rr->signedContentIdentifier;
127 if (rr->receiptsFrom->type == 0) {
129 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
136 *plist = rr->receiptsFrom->d.receiptList;
139 *prto = rr->receiptsTo;
142 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
144 static int cms_msgSigDigest(CMS_SignerInfo *si,
145 unsigned char *dig, unsigned int *diglen)
148 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
151 if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
152 si->signedAttrs, dig, diglen))
157 /* Add a msgSigDigest attribute to a SignerInfo */
159 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
161 unsigned char dig[EVP_MAX_MD_SIZE];
163 if (!cms_msgSigDigest(src, dig, &diglen)) {
164 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
167 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
168 V_ASN1_OCTET_STRING, dig, diglen)) {
169 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
175 /* Verify signed receipt after it has already passed normal CMS verify */
177 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
180 CMS_ReceiptRequest *rr = NULL;
181 CMS_Receipt *rct = NULL;
182 STACK_OF(CMS_SignerInfo) *sis, *osis;
183 CMS_SignerInfo *si, *osi = NULL;
184 ASN1_OCTET_STRING *msig, **pcont;
186 unsigned char dig[EVP_MAX_MD_SIZE];
189 /* Get SignerInfos, also checks SignedData content type */
190 osis = CMS_get0_SignerInfos(req_cms);
191 sis = CMS_get0_SignerInfos(cms);
195 if (sk_CMS_SignerInfo_num(sis) != 1) {
196 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
200 /* Check receipt content type */
201 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
202 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
206 /* Extract and decode receipt content */
207 pcont = CMS_get0_content(cms);
208 if (pcont == NULL || *pcont == NULL) {
209 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
213 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
216 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
220 /* Locate original request */
222 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
223 osi = sk_CMS_SignerInfo_value(osis, i);
224 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
228 if (i == sk_CMS_SignerInfo_num(osis)) {
229 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
233 si = sk_CMS_SignerInfo_value(sis, 0);
235 /* Get msgSigDigest value and compare */
237 msig = CMS_signed_get0_data_by_OBJ(si,
239 (NID_id_smime_aa_msgSigDigest), -3,
240 V_ASN1_OCTET_STRING);
243 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
247 if (!cms_msgSigDigest(osi, dig, &diglen)) {
248 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
252 if (diglen != (unsigned int)msig->length) {
253 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
257 if (memcmp(dig, msig->data, diglen)) {
258 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
259 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
263 /* Compare content types */
265 octype = CMS_signed_get0_data_by_OBJ(osi,
266 OBJ_nid2obj(NID_pkcs9_contentType),
269 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
273 /* Compare details in receipt request */
275 if (OBJ_cmp(octype, rct->contentType)) {
276 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
280 /* Get original receipt request details */
282 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
283 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
287 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
288 rct->signedContentIdentifier)) {
289 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
296 CMS_ReceiptRequest_free(rr);
297 M_ASN1_free_of(rct, CMS_Receipt);
303 * Encode a Receipt into an OCTET STRING read for including into content of a
304 * SignedData ContentInfo.
307 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
310 CMS_ReceiptRequest *rr = NULL;
312 ASN1_OCTET_STRING *os = NULL;
314 /* Get original receipt request */
316 /* Get original receipt request details */
318 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
319 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
323 /* Get original content type */
325 ctype = CMS_signed_get0_data_by_OBJ(si,
326 OBJ_nid2obj(NID_pkcs9_contentType),
329 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
334 rct.contentType = ctype;
335 rct.signedContentIdentifier = rr->signedContentIdentifier;
336 rct.originatorSignatureValue = si->signature;
338 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
341 CMS_ReceiptRequest_free(rr);
346 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
349 int cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
351 ASN1_STRING *seq = NULL;
352 unsigned char *p, *pp;
355 /* Add SigningCertificateV2 signed attribute to the signer info. */
356 len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
357 if ((pp = OPENSSL_malloc(len)) == NULL)
360 i2d_ESS_SIGNING_CERT_V2(sc, &p);
361 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
365 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
366 V_ASN1_SEQUENCE, seq, -1))
368 ASN1_STRING_free(seq);
371 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
372 ASN1_STRING_free(seq);
378 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
381 int cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
383 ASN1_STRING *seq = NULL;
384 unsigned char *p, *pp;
387 /* Add SigningCertificate signed attribute to the signer info. */
388 len = i2d_ESS_SIGNING_CERT(sc, NULL);
389 if ((pp = OPENSSL_malloc(len)) == NULL)
392 i2d_ESS_SIGNING_CERT(sc, &p);
393 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
397 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
398 V_ASN1_SEQUENCE, seq, -1))
400 ASN1_STRING_free(seq);
403 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
404 ASN1_STRING_free(seq);