1 /* crypto/cms/cms_ess.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
55 #include "internal/cryptlib.h"
56 #include <openssl/asn1t.h>
57 #include <openssl/pem.h>
58 #include <openssl/rand.h>
59 #include <openssl/x509v3.h>
60 #include <openssl/err.h>
61 #include <openssl/cms.h>
64 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
66 /* ESS services: for now just Signed Receipt related */
68 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
71 CMS_ReceiptRequest *rr = NULL;
74 str = CMS_signed_get0_data_by_OBJ(si,
76 (NID_id_smime_aa_receiptRequest), -3,
81 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
87 CMS_ReceiptRequest_free(rr);
91 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
93 STACK_OF(GENERAL_NAMES)
94 *receiptList, STACK_OF(GENERAL_NAMES)
97 CMS_ReceiptRequest *rr = NULL;
99 rr = CMS_ReceiptRequest_new();
103 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
105 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
107 if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0)
111 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
112 rr->receiptsTo = receiptsTo;
115 rr->receiptsFrom->type = 1;
116 rr->receiptsFrom->d.receiptList = receiptList;
118 rr->receiptsFrom->type = 0;
119 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
125 CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
128 CMS_ReceiptRequest_free(rr);
133 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
135 unsigned char *rrder = NULL;
138 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
142 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
143 V_ASN1_SEQUENCE, rrder, rrderlen))
150 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
158 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
161 STACK_OF(GENERAL_NAMES) **plist,
162 STACK_OF(GENERAL_NAMES) **prto)
165 *pcid = rr->signedContentIdentifier;
166 if (rr->receiptsFrom->type == 0) {
168 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
175 *plist = rr->receiptsFrom->d.receiptList;
178 *prto = rr->receiptsTo;
181 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
183 static int cms_msgSigDigest(CMS_SignerInfo *si,
184 unsigned char *dig, unsigned int *diglen)
187 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
190 if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
191 si->signedAttrs, dig, diglen))
196 /* Add a msgSigDigest attribute to a SignerInfo */
198 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
200 unsigned char dig[EVP_MAX_MD_SIZE];
202 if (!cms_msgSigDigest(src, dig, &diglen)) {
203 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
206 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
207 V_ASN1_OCTET_STRING, dig, diglen)) {
208 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
214 /* Verify signed receipt after it has already passed normal CMS verify */
216 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
219 CMS_ReceiptRequest *rr = NULL;
220 CMS_Receipt *rct = NULL;
221 STACK_OF(CMS_SignerInfo) *sis, *osis;
222 CMS_SignerInfo *si, *osi = NULL;
223 ASN1_OCTET_STRING *msig, **pcont;
225 unsigned char dig[EVP_MAX_MD_SIZE];
228 /* Get SignerInfos, also checks SignedData content type */
229 osis = CMS_get0_SignerInfos(req_cms);
230 sis = CMS_get0_SignerInfos(cms);
234 if (sk_CMS_SignerInfo_num(sis) != 1) {
235 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
239 /* Check receipt content type */
240 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
241 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
245 /* Extract and decode receipt content */
246 pcont = CMS_get0_content(cms);
247 if (!pcont || !*pcont) {
248 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
252 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
255 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
259 /* Locate original request */
261 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
262 osi = sk_CMS_SignerInfo_value(osis, i);
263 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
267 if (i == sk_CMS_SignerInfo_num(osis)) {
268 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
272 si = sk_CMS_SignerInfo_value(sis, 0);
274 /* Get msgSigDigest value and compare */
276 msig = CMS_signed_get0_data_by_OBJ(si,
278 (NID_id_smime_aa_msgSigDigest), -3,
279 V_ASN1_OCTET_STRING);
282 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
286 if (!cms_msgSigDigest(osi, dig, &diglen)) {
287 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
291 if (diglen != (unsigned int)msig->length) {
292 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
296 if (memcmp(dig, msig->data, diglen)) {
297 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
298 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
302 /* Compare content types */
304 octype = CMS_signed_get0_data_by_OBJ(osi,
305 OBJ_nid2obj(NID_pkcs9_contentType),
308 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
312 /* Compare details in receipt request */
314 if (OBJ_cmp(octype, rct->contentType)) {
315 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
319 /* Get original receipt request details */
321 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
322 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
326 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
327 rct->signedContentIdentifier)) {
328 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
335 CMS_ReceiptRequest_free(rr);
336 M_ASN1_free_of(rct, CMS_Receipt);
342 * Encode a Receipt into an OCTET STRING read for including into content of a
343 * SignedData ContentInfo.
346 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
349 CMS_ReceiptRequest *rr = NULL;
351 ASN1_OCTET_STRING *os = NULL;
353 /* Get original receipt request */
355 /* Get original receipt request details */
357 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
358 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
362 /* Get original content type */
364 ctype = CMS_signed_get0_data_by_OBJ(si,
365 OBJ_nid2obj(NID_pkcs9_contentType),
368 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
373 rct.contentType = ctype;
374 rct.signedContentIdentifier = rr->signedContentIdentifier;
375 rct.originatorSignatureValue = si->signature;
377 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
380 CMS_ReceiptRequest_free(rr);