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 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
26 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
29 CMS_ReceiptRequest *rr = NULL;
32 str = CMS_signed_get0_data_by_OBJ(si,
34 (NID_id_smime_aa_receiptRequest), -3,
39 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
45 CMS_ReceiptRequest_free(rr);
49 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
51 STACK_OF(GENERAL_NAMES)
52 *receiptList, STACK_OF(GENERAL_NAMES)
55 CMS_ReceiptRequest *rr = NULL;
57 rr = CMS_ReceiptRequest_new();
61 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
63 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
65 if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0)
69 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
70 rr->receiptsTo = receiptsTo;
73 rr->receiptsFrom->type = 1;
74 rr->receiptsFrom->d.receiptList = receiptList;
76 rr->receiptsFrom->type = 0;
77 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
83 CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
86 CMS_ReceiptRequest_free(rr);
91 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
93 unsigned char *rrder = NULL;
96 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
100 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
101 V_ASN1_SEQUENCE, rrder, rrderlen))
108 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
116 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
119 STACK_OF(GENERAL_NAMES) **plist,
120 STACK_OF(GENERAL_NAMES) **prto)
123 *pcid = rr->signedContentIdentifier;
124 if (rr->receiptsFrom->type == 0) {
126 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
133 *plist = rr->receiptsFrom->d.receiptList;
136 *prto = rr->receiptsTo;
139 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
141 static int cms_msgSigDigest(CMS_SignerInfo *si,
142 unsigned char *dig, unsigned int *diglen)
145 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
148 if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
149 si->signedAttrs, dig, diglen))
154 /* Add a msgSigDigest attribute to a SignerInfo */
156 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
158 unsigned char dig[EVP_MAX_MD_SIZE];
160 if (!cms_msgSigDigest(src, dig, &diglen)) {
161 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
164 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
165 V_ASN1_OCTET_STRING, dig, diglen)) {
166 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
172 /* Verify signed receipt after it has already passed normal CMS verify */
174 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
177 CMS_ReceiptRequest *rr = NULL;
178 CMS_Receipt *rct = NULL;
179 STACK_OF(CMS_SignerInfo) *sis, *osis;
180 CMS_SignerInfo *si, *osi = NULL;
181 ASN1_OCTET_STRING *msig, **pcont;
183 unsigned char dig[EVP_MAX_MD_SIZE];
186 /* Get SignerInfos, also checks SignedData content type */
187 osis = CMS_get0_SignerInfos(req_cms);
188 sis = CMS_get0_SignerInfos(cms);
192 if (sk_CMS_SignerInfo_num(sis) != 1) {
193 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
197 /* Check receipt content type */
198 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
199 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
203 /* Extract and decode receipt content */
204 pcont = CMS_get0_content(cms);
205 if (!pcont || !*pcont) {
206 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
210 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
213 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
217 /* Locate original request */
219 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
220 osi = sk_CMS_SignerInfo_value(osis, i);
221 if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
225 if (i == sk_CMS_SignerInfo_num(osis)) {
226 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
230 si = sk_CMS_SignerInfo_value(sis, 0);
232 /* Get msgSigDigest value and compare */
234 msig = CMS_signed_get0_data_by_OBJ(si,
236 (NID_id_smime_aa_msgSigDigest), -3,
237 V_ASN1_OCTET_STRING);
240 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
244 if (!cms_msgSigDigest(osi, dig, &diglen)) {
245 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
249 if (diglen != (unsigned int)msig->length) {
250 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
254 if (memcmp(dig, msig->data, diglen)) {
255 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
256 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
260 /* Compare content types */
262 octype = CMS_signed_get0_data_by_OBJ(osi,
263 OBJ_nid2obj(NID_pkcs9_contentType),
266 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
270 /* Compare details in receipt request */
272 if (OBJ_cmp(octype, rct->contentType)) {
273 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
277 /* Get original receipt request details */
279 if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
280 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
284 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
285 rct->signedContentIdentifier)) {
286 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
293 CMS_ReceiptRequest_free(rr);
294 M_ASN1_free_of(rct, CMS_Receipt);
300 * Encode a Receipt into an OCTET STRING read for including into content of a
301 * SignedData ContentInfo.
304 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
307 CMS_ReceiptRequest *rr = NULL;
309 ASN1_OCTET_STRING *os = NULL;
311 /* Get original receipt request */
313 /* Get original receipt request details */
315 if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
316 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
320 /* Get original content type */
322 ctype = CMS_signed_get0_data_by_OBJ(si,
323 OBJ_nid2obj(NID_pkcs9_contentType),
326 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
331 rct.contentType = ctype;
332 rct.signedContentIdentifier = rr->signedContentIdentifier;
333 rct.originatorSignatureValue = si->signature;
335 os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
338 CMS_ReceiptRequest_free(rr);
343 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
346 int cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
348 ASN1_STRING *seq = NULL;
349 unsigned char *p, *pp;
352 /* Add SigningCertificateV2 signed attribute to the signer info. */
353 len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
354 if ((pp = OPENSSL_malloc(len)) == NULL)
357 i2d_ESS_SIGNING_CERT_V2(sc, &p);
358 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
362 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
363 V_ASN1_SEQUENCE, seq, -1))
365 ASN1_STRING_free(seq);
368 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
369 ASN1_STRING_free(seq);
375 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
378 int cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
380 ASN1_STRING *seq = NULL;
381 unsigned char *p, *pp;
384 /* Add SigningCertificate signed attribute to the signer info. */
385 len = i2d_ESS_SIGNING_CERT(sc, NULL);
386 if ((pp = OPENSSL_malloc(len)) == NULL)
389 i2d_ESS_SIGNING_CERT(sc, &p);
390 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
394 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
395 V_ASN1_SEQUENCE, seq, -1))
397 ASN1_STRING_free(seq);
400 CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
401 ASN1_STRING_free(seq);