2 * Copyright 2008-2016 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>
19 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest
)
21 /* ESS services: for now just Signed Receipt related */
23 int CMS_get1_ReceiptRequest(CMS_SignerInfo
*si
, CMS_ReceiptRequest
**prr
)
26 CMS_ReceiptRequest
*rr
= NULL
;
29 str
= CMS_signed_get0_data_by_OBJ(si
,
31 (NID_id_smime_aa_receiptRequest
), -3,
36 rr
= ASN1_item_unpack(str
, ASN1_ITEM_rptr(CMS_ReceiptRequest
));
42 CMS_ReceiptRequest_free(rr
);
46 CMS_ReceiptRequest
*CMS_ReceiptRequest_create0(unsigned char *id
, int idlen
,
48 STACK_OF(GENERAL_NAMES
)
49 *receiptList
, STACK_OF(GENERAL_NAMES
)
52 CMS_ReceiptRequest
*rr
= NULL
;
54 rr
= CMS_ReceiptRequest_new();
58 ASN1_STRING_set0(rr
->signedContentIdentifier
, id
, idlen
);
60 if (!ASN1_STRING_set(rr
->signedContentIdentifier
, NULL
, 32))
62 if (RAND_bytes(rr
->signedContentIdentifier
->data
, 32) <= 0)
66 sk_GENERAL_NAMES_pop_free(rr
->receiptsTo
, GENERAL_NAMES_free
);
67 rr
->receiptsTo
= receiptsTo
;
70 rr
->receiptsFrom
->type
= 1;
71 rr
->receiptsFrom
->d
.receiptList
= receiptList
;
73 rr
->receiptsFrom
->type
= 0;
74 rr
->receiptsFrom
->d
.allOrFirstTier
= allorfirst
;
80 CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0
, ERR_R_MALLOC_FAILURE
);
83 CMS_ReceiptRequest_free(rr
);
88 int CMS_add1_ReceiptRequest(CMS_SignerInfo
*si
, CMS_ReceiptRequest
*rr
)
90 unsigned char *rrder
= NULL
;
93 rrderlen
= i2d_CMS_ReceiptRequest(rr
, &rrder
);
97 if (!CMS_signed_add1_attr_by_NID(si
, NID_id_smime_aa_receiptRequest
,
98 V_ASN1_SEQUENCE
, rrder
, rrderlen
))
105 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST
, ERR_R_MALLOC_FAILURE
);
113 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest
*rr
,
116 STACK_OF(GENERAL_NAMES
) **plist
,
117 STACK_OF(GENERAL_NAMES
) **prto
)
120 *pcid
= rr
->signedContentIdentifier
;
121 if (rr
->receiptsFrom
->type
== 0) {
123 *pallorfirst
= (int)rr
->receiptsFrom
->d
.allOrFirstTier
;
130 *plist
= rr
->receiptsFrom
->d
.receiptList
;
133 *prto
= rr
->receiptsTo
;
136 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
138 static int cms_msgSigDigest(CMS_SignerInfo
*si
,
139 unsigned char *dig
, unsigned int *diglen
)
142 md
= EVP_get_digestbyobj(si
->digestAlgorithm
->algorithm
);
145 if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify
), md
,
146 si
->signedAttrs
, dig
, diglen
))
151 /* Add a msgSigDigest attribute to a SignerInfo */
153 int cms_msgSigDigest_add1(CMS_SignerInfo
*dest
, CMS_SignerInfo
*src
)
155 unsigned char dig
[EVP_MAX_MD_SIZE
];
157 if (!cms_msgSigDigest(src
, dig
, &diglen
)) {
158 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1
, CMS_R_MSGSIGDIGEST_ERROR
);
161 if (!CMS_signed_add1_attr_by_NID(dest
, NID_id_smime_aa_msgSigDigest
,
162 V_ASN1_OCTET_STRING
, dig
, diglen
)) {
163 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1
, ERR_R_MALLOC_FAILURE
);
169 /* Verify signed receipt after it has already passed normal CMS verify */
171 int cms_Receipt_verify(CMS_ContentInfo
*cms
, CMS_ContentInfo
*req_cms
)
174 CMS_ReceiptRequest
*rr
= NULL
;
175 CMS_Receipt
*rct
= NULL
;
176 STACK_OF(CMS_SignerInfo
) *sis
, *osis
;
177 CMS_SignerInfo
*si
, *osi
= NULL
;
178 ASN1_OCTET_STRING
*msig
, **pcont
;
180 unsigned char dig
[EVP_MAX_MD_SIZE
];
183 /* Get SignerInfos, also checks SignedData content type */
184 osis
= CMS_get0_SignerInfos(req_cms
);
185 sis
= CMS_get0_SignerInfos(cms
);
189 if (sk_CMS_SignerInfo_num(sis
) != 1) {
190 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NEED_ONE_SIGNER
);
194 /* Check receipt content type */
195 if (OBJ_obj2nid(CMS_get0_eContentType(cms
)) != NID_id_smime_ct_receipt
) {
196 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NOT_A_SIGNED_RECEIPT
);
200 /* Extract and decode receipt content */
201 pcont
= CMS_get0_content(cms
);
202 if (!pcont
|| !*pcont
) {
203 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NO_CONTENT
);
207 rct
= ASN1_item_unpack(*pcont
, ASN1_ITEM_rptr(CMS_Receipt
));
210 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_RECEIPT_DECODE_ERROR
);
214 /* Locate original request */
216 for (i
= 0; i
< sk_CMS_SignerInfo_num(osis
); i
++) {
217 osi
= sk_CMS_SignerInfo_value(osis
, i
);
218 if (!ASN1_STRING_cmp(osi
->signature
, rct
->originatorSignatureValue
))
222 if (i
== sk_CMS_SignerInfo_num(osis
)) {
223 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NO_MATCHING_SIGNATURE
);
227 si
= sk_CMS_SignerInfo_value(sis
, 0);
229 /* Get msgSigDigest value and compare */
231 msig
= CMS_signed_get0_data_by_OBJ(si
,
233 (NID_id_smime_aa_msgSigDigest
), -3,
234 V_ASN1_OCTET_STRING
);
237 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NO_MSGSIGDIGEST
);
241 if (!cms_msgSigDigest(osi
, dig
, &diglen
)) {
242 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_MSGSIGDIGEST_ERROR
);
246 if (diglen
!= (unsigned int)msig
->length
) {
247 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_MSGSIGDIGEST_WRONG_LENGTH
);
251 if (memcmp(dig
, msig
->data
, diglen
)) {
252 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
,
253 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE
);
257 /* Compare content types */
259 octype
= CMS_signed_get0_data_by_OBJ(osi
,
260 OBJ_nid2obj(NID_pkcs9_contentType
),
263 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NO_CONTENT_TYPE
);
267 /* Compare details in receipt request */
269 if (OBJ_cmp(octype
, rct
->contentType
)) {
270 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_CONTENT_TYPE_MISMATCH
);
274 /* Get original receipt request details */
276 if (CMS_get1_ReceiptRequest(osi
, &rr
) <= 0) {
277 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_NO_RECEIPT_REQUEST
);
281 if (ASN1_STRING_cmp(rr
->signedContentIdentifier
,
282 rct
->signedContentIdentifier
)) {
283 CMSerr(CMS_F_CMS_RECEIPT_VERIFY
, CMS_R_CONTENTIDENTIFIER_MISMATCH
);
290 CMS_ReceiptRequest_free(rr
);
291 M_ASN1_free_of(rct
, CMS_Receipt
);
297 * Encode a Receipt into an OCTET STRING read for including into content of a
298 * SignedData ContentInfo.
301 ASN1_OCTET_STRING
*cms_encode_Receipt(CMS_SignerInfo
*si
)
304 CMS_ReceiptRequest
*rr
= NULL
;
306 ASN1_OCTET_STRING
*os
= NULL
;
308 /* Get original receipt request */
310 /* Get original receipt request details */
312 if (CMS_get1_ReceiptRequest(si
, &rr
) <= 0) {
313 CMSerr(CMS_F_CMS_ENCODE_RECEIPT
, CMS_R_NO_RECEIPT_REQUEST
);
317 /* Get original content type */
319 ctype
= CMS_signed_get0_data_by_OBJ(si
,
320 OBJ_nid2obj(NID_pkcs9_contentType
),
323 CMSerr(CMS_F_CMS_ENCODE_RECEIPT
, CMS_R_NO_CONTENT_TYPE
);
328 rct
.contentType
= ctype
;
329 rct
.signedContentIdentifier
= rr
->signedContentIdentifier
;
330 rct
.originatorSignatureValue
= si
->signature
;
332 os
= ASN1_item_pack(&rct
, ASN1_ITEM_rptr(CMS_Receipt
), NULL
);
335 CMS_ReceiptRequest_free(rr
);