1 /* crypto/cms/cms_ess.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
55 #include <openssl/asn1t.h>
56 #include <openssl/pem.h>
57 #include <openssl/rand.h>
58 #include <openssl/x509v3.h>
59 #include <openssl/err.h>
60 #include <openssl/cms.h>
62 #include "asn1_locl.h"
64 DECLARE_ASN1_ITEM(CMS_ReceiptRequest)
65 DECLARE_ASN1_ITEM(CMS_Receipt)
67 IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
69 /* ESS services: for now just Signed Receipt related */
71 int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
74 CMS_ReceiptRequest *rr = NULL;
77 str = CMS_signed_get0_data_by_OBJ(si,
78 OBJ_nid2obj(NID_id_smime_aa_receiptRequest),
83 rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
89 CMS_ReceiptRequest_free(rr);
93 CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
95 STACK_OF(GENERAL_NAMES) *receiptList,
96 STACK_OF(GENERAL_NAMES) *receiptsTo)
98 CMS_ReceiptRequest *rr = NULL;
100 rr = CMS_ReceiptRequest_new();
104 ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
107 if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
109 if (RAND_pseudo_bytes(rr->signedContentIdentifier->data, 32)
114 sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
115 rr->receiptsTo = receiptsTo;
119 rr->receiptsFrom->type = 1;
120 rr->receiptsFrom->d.receiptList = receiptList;
124 rr->receiptsFrom->type = 0;
125 rr->receiptsFrom->d.allOrFirstTier = allorfirst;
131 CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
135 CMS_ReceiptRequest_free(rr);
141 int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
143 unsigned char *rrder = NULL;
146 rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
150 if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
151 V_ASN1_SEQUENCE, rrder, rrderlen))
158 CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
167 void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
170 STACK_OF(GENERAL_NAMES) **plist,
171 STACK_OF(GENERAL_NAMES) **prto)
174 *pcid = rr->signedContentIdentifier;
175 if (rr->receiptsFrom->type == 0)
178 *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
187 *plist = rr->receiptsFrom->d.receiptList;
190 *prto = rr->receiptsTo;
193 /* Digest a SignerInfo structure for msgSigDigest attribute processing */
195 static int cms_msgSigDigest(CMS_SignerInfo *si,
196 unsigned char *dig, unsigned int *diglen)
199 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
202 if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
203 si->signedAttrs, dig, diglen))
208 /* Add a msgSigDigest attribute to a SignerInfo */
210 int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
212 unsigned char dig[EVP_MAX_MD_SIZE];
214 if (!cms_msgSigDigest(src, dig, &diglen))
216 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
219 if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
220 V_ASN1_OCTET_STRING, dig, diglen))
222 CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
228 /* Verify signed receipt after it has already passed normal CMS verify */
230 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
233 CMS_ReceiptRequest *rr = NULL;
234 CMS_Receipt *rct = NULL;
235 STACK_OF(CMS_SignerInfo) *sis, *osis;
236 CMS_SignerInfo *si, *osi;
237 ASN1_OCTET_STRING *msig, **pcont;
239 unsigned char dig[EVP_MAX_MD_SIZE];
242 /* Get SignerInfos, also checks SignedData content type */
243 osis = CMS_get0_SignerInfos(req_cms);
244 sis = CMS_get0_SignerInfos(cms);
248 if (sk_CMS_SignerInfo_num(sis) != 1)
250 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
254 /* Check receipt content type */
255 if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt)
257 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
261 /* Extract and decode receipt content */
262 pcont = CMS_get0_content(cms);
263 if (!pcont || !*pcont)
265 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
269 rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
273 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
277 /* Locate original request */
279 for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++)
281 osi = sk_CMS_SignerInfo_value(osis, i);
282 if (!ASN1_STRING_cmp(osi->signature,
283 rct->originatorSignatureValue))
287 if (i == sk_CMS_SignerInfo_num(osis))
289 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
293 si = sk_CMS_SignerInfo_value(sis, 0);
295 /* Get msgSigDigest value and compare */
297 msig = CMS_signed_get0_data_by_OBJ(si,
298 OBJ_nid2obj(NID_id_smime_aa_msgSigDigest),
299 -3, V_ASN1_OCTET_STRING);
303 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
307 if (!cms_msgSigDigest(osi, dig, &diglen))
309 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
313 if (diglen != (unsigned int)msig->length)
315 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
316 CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
320 if (memcmp(dig, msig->data, diglen))
322 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
323 CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
327 /* Compare content types */
329 octype = CMS_signed_get0_data_by_OBJ(osi,
330 OBJ_nid2obj(NID_pkcs9_contentType),
334 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
338 /* Compare details in receipt request */
340 if (OBJ_cmp(octype, rct->contentType))
342 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
346 /* Get original receipt request details */
348 if (!CMS_get1_ReceiptRequest(osi, &rr))
350 CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
354 if (ASN1_STRING_cmp(rr->signedContentIdentifier,
355 rct->signedContentIdentifier))
357 CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
358 CMS_R_CONTENTIDENTIFIER_MISMATCH);
366 CMS_ReceiptRequest_free(rr);
368 M_ASN1_free_of(rct, CMS_Receipt);
374 /* Encode a Receipt into an OCTET STRING read for including into content of
375 * a SignedData ContentInfo.
378 ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
381 CMS_ReceiptRequest *rr = NULL;
383 ASN1_OCTET_STRING *os = NULL;
385 /* Get original receipt request */
387 /* Get original receipt request details */
389 if (!CMS_get1_ReceiptRequest(si, &rr))
391 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
395 /* Get original content type */
397 ctype = CMS_signed_get0_data_by_OBJ(si,
398 OBJ_nid2obj(NID_pkcs9_contentType),
402 CMSerr(CMS_F_CMS_ENCODE_RECEIPT, 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);
415 CMS_ReceiptRequest_free(rr);