| Current Path : /usr/src/crypto/openssl/crypto/cms/ |
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| Current File : //usr/src/crypto/openssl/crypto/cms/cms_ess.c |
/* crypto/cms/cms_ess.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project.
*/
/* ====================================================================
* Copyright (c) 2008 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*/
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/cms.h>
#include "cms_lcl.h"
DECLARE_ASN1_ITEM(CMS_ReceiptRequest)
DECLARE_ASN1_ITEM(CMS_Receipt)
IMPLEMENT_ASN1_FUNCTIONS_const(CMS_ReceiptRequest)
/* ESS services: for now just Signed Receipt related */
int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
{
ASN1_STRING *str;
CMS_ReceiptRequest *rr = NULL;
if (prr)
*prr = NULL;
str = CMS_signed_get0_data_by_OBJ(si,
OBJ_nid2obj(NID_id_smime_aa_receiptRequest),
-3, V_ASN1_SEQUENCE);
if (!str)
return 0;
rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
if (!rr)
return -1;
if (prr)
*prr = rr;
else
CMS_ReceiptRequest_free(rr);
return 1;
}
CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
int allorfirst,
STACK_OF(GENERAL_NAMES) *receiptList,
STACK_OF(GENERAL_NAMES) *receiptsTo)
{
CMS_ReceiptRequest *rr = NULL;
rr = CMS_ReceiptRequest_new();
if (!rr)
goto merr;
if (id)
ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
else
{
if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
goto merr;
if (RAND_pseudo_bytes(rr->signedContentIdentifier->data, 32)
<= 0)
goto err;
}
sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
rr->receiptsTo = receiptsTo;
if (receiptList)
{
rr->receiptsFrom->type = 1;
rr->receiptsFrom->d.receiptList = receiptList;
}
else
{
rr->receiptsFrom->type = 0;
rr->receiptsFrom->d.allOrFirstTier = allorfirst;
}
return rr;
merr:
CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
err:
if (rr)
CMS_ReceiptRequest_free(rr);
return NULL;
}
int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
{
unsigned char *rrder = NULL;
int rrderlen, r = 0;
rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
if (rrderlen < 0)
goto merr;
if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
V_ASN1_SEQUENCE, rrder, rrderlen))
goto merr;
r = 1;
merr:
if (!r)
CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
if (rrder)
OPENSSL_free(rrder);
return r;
}
void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
ASN1_STRING **pcid,
int *pallorfirst,
STACK_OF(GENERAL_NAMES) **plist,
STACK_OF(GENERAL_NAMES) **prto)
{
if (pcid)
*pcid = rr->signedContentIdentifier;
if (rr->receiptsFrom->type == 0)
{
if (pallorfirst)
*pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
if (plist)
*plist = NULL;
}
else
{
if (pallorfirst)
*pallorfirst = -1;
if (plist)
*plist = rr->receiptsFrom->d.receiptList;
}
if (prto)
*prto = rr->receiptsTo;
}
/* Digest a SignerInfo structure for msgSigDigest attribute processing */
static int cms_msgSigDigest(CMS_SignerInfo *si,
unsigned char *dig, unsigned int *diglen)
{
const EVP_MD *md;
md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
if (md == NULL)
return 0;
if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
si->signedAttrs, dig, diglen))
return 0;
return 1;
}
/* Add a msgSigDigest attribute to a SignerInfo */
int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
{
unsigned char dig[EVP_MAX_MD_SIZE];
unsigned int diglen;
if (!cms_msgSigDigest(src, dig, &diglen))
{
CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
return 0;
}
if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
V_ASN1_OCTET_STRING, dig, diglen))
{
CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
return 0;
}
return 1;
}
/* Verify signed receipt after it has already passed normal CMS verify */
int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
{
int r = 0, i;
CMS_ReceiptRequest *rr = NULL;
CMS_Receipt *rct = NULL;
STACK_OF(CMS_SignerInfo) *sis, *osis;
CMS_SignerInfo *si, *osi = NULL;
ASN1_OCTET_STRING *msig, **pcont;
ASN1_OBJECT *octype;
unsigned char dig[EVP_MAX_MD_SIZE];
unsigned int diglen;
/* Get SignerInfos, also checks SignedData content type */
osis = CMS_get0_SignerInfos(req_cms);
sis = CMS_get0_SignerInfos(cms);
if (!osis || !sis)
goto err;
if (sk_CMS_SignerInfo_num(sis) != 1)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
goto err;
}
/* Check receipt content type */
if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
goto err;
}
/* Extract and decode receipt content */
pcont = CMS_get0_content(cms);
if (!pcont || !*pcont)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
goto err;
}
rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
if (!rct)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
goto err;
}
/* Locate original request */
for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++)
{
osi = sk_CMS_SignerInfo_value(osis, i);
if (!ASN1_STRING_cmp(osi->signature,
rct->originatorSignatureValue))
break;
}
if (i == sk_CMS_SignerInfo_num(osis))
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
goto err;
}
si = sk_CMS_SignerInfo_value(sis, 0);
/* Get msgSigDigest value and compare */
msig = CMS_signed_get0_data_by_OBJ(si,
OBJ_nid2obj(NID_id_smime_aa_msgSigDigest),
-3, V_ASN1_OCTET_STRING);
if (!msig)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
goto err;
}
if (!cms_msgSigDigest(osi, dig, &diglen))
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
goto err;
}
if (diglen != (unsigned int)msig->length)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
goto err;
}
if (memcmp(dig, msig->data, diglen))
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
goto err;
}
/* Compare content types */
octype = CMS_signed_get0_data_by_OBJ(osi,
OBJ_nid2obj(NID_pkcs9_contentType),
-3, V_ASN1_OBJECT);
if (!octype)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
goto err;
}
/* Compare details in receipt request */
if (OBJ_cmp(octype, rct->contentType))
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
goto err;
}
/* Get original receipt request details */
if (CMS_get1_ReceiptRequest(osi, &rr) <= 0)
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
goto err;
}
if (ASN1_STRING_cmp(rr->signedContentIdentifier,
rct->signedContentIdentifier))
{
CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
CMS_R_CONTENTIDENTIFIER_MISMATCH);
goto err;
}
r = 1;
err:
if (rr)
CMS_ReceiptRequest_free(rr);
if (rct)
M_ASN1_free_of(rct, CMS_Receipt);
return r;
}
/* Encode a Receipt into an OCTET STRING read for including into content of
* a SignedData ContentInfo.
*/
ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
{
CMS_Receipt rct;
CMS_ReceiptRequest *rr = NULL;
ASN1_OBJECT *ctype;
ASN1_OCTET_STRING *os = NULL;
/* Get original receipt request */
/* Get original receipt request details */
if (CMS_get1_ReceiptRequest(si, &rr) <= 0)
{
CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
goto err;
}
/* Get original content type */
ctype = CMS_signed_get0_data_by_OBJ(si,
OBJ_nid2obj(NID_pkcs9_contentType),
-3, V_ASN1_OBJECT);
if (!ctype)
{
CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
goto err;
}
rct.version = 1;
rct.contentType = ctype;
rct.signedContentIdentifier = rr->signedContentIdentifier;
rct.originatorSignatureValue = si->signature;
os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
err:
if (rr)
CMS_ReceiptRequest_free(rr);
return os;
}