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394 lines
12 KiB
394 lines
12 KiB
/* crypto/cms/cms_ess.c */ |
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/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
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* project. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 2008 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* licensing@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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*/ |
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#include "cryptlib.h" |
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#include <openssl/asn1t.h> |
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#include <openssl/pem.h> |
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#include <openssl/rand.h> |
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#include <openssl/x509v3.h> |
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#include <openssl/err.h> |
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#include <openssl/cms.h> |
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#include "cms_lcl.h" |
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DECLARE_ASN1_ITEM(CMS_ReceiptRequest) |
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DECLARE_ASN1_ITEM(CMS_Receipt) |
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IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest) |
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/* ESS services: for now just Signed Receipt related */ |
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int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr) |
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{ |
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ASN1_STRING *str; |
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CMS_ReceiptRequest *rr = NULL; |
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if (prr) |
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*prr = NULL; |
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str = CMS_signed_get0_data_by_OBJ(si, |
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OBJ_nid2obj |
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(NID_id_smime_aa_receiptRequest), -3, |
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V_ASN1_SEQUENCE); |
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if (!str) |
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return 0; |
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rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest)); |
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if (!rr) |
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return -1; |
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if (prr) |
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*prr = rr; |
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else |
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CMS_ReceiptRequest_free(rr); |
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return 1; |
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} |
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CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen, |
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int allorfirst, |
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STACK_OF(GENERAL_NAMES) |
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*receiptList, STACK_OF(GENERAL_NAMES) |
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*receiptsTo) |
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{ |
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CMS_ReceiptRequest *rr = NULL; |
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rr = CMS_ReceiptRequest_new(); |
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if (!rr) |
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goto merr; |
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if (id) |
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ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen); |
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else { |
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if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32)) |
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goto merr; |
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if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0) |
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goto err; |
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} |
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sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free); |
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rr->receiptsTo = receiptsTo; |
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if (receiptList) { |
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rr->receiptsFrom->type = 1; |
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rr->receiptsFrom->d.receiptList = receiptList; |
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} else { |
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rr->receiptsFrom->type = 0; |
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rr->receiptsFrom->d.allOrFirstTier = allorfirst; |
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} |
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return rr; |
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merr: |
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CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE); |
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err: |
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if (rr) |
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CMS_ReceiptRequest_free(rr); |
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return NULL; |
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} |
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int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr) |
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{ |
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unsigned char *rrder = NULL; |
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int rrderlen, r = 0; |
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rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder); |
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if (rrderlen < 0) |
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goto merr; |
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if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest, |
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V_ASN1_SEQUENCE, rrder, rrderlen)) |
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goto merr; |
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r = 1; |
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merr: |
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if (!r) |
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CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE); |
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if (rrder) |
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OPENSSL_free(rrder); |
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return r; |
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} |
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void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr, |
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ASN1_STRING **pcid, |
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int *pallorfirst, |
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STACK_OF(GENERAL_NAMES) **plist, |
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STACK_OF(GENERAL_NAMES) **prto) |
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{ |
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if (pcid) |
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*pcid = rr->signedContentIdentifier; |
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if (rr->receiptsFrom->type == 0) { |
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if (pallorfirst) |
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*pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier; |
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if (plist) |
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*plist = NULL; |
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} else { |
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if (pallorfirst) |
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*pallorfirst = -1; |
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if (plist) |
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*plist = rr->receiptsFrom->d.receiptList; |
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} |
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if (prto) |
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*prto = rr->receiptsTo; |
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} |
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/* Digest a SignerInfo structure for msgSigDigest attribute processing */ |
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static int cms_msgSigDigest(CMS_SignerInfo *si, |
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unsigned char *dig, unsigned int *diglen) |
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{ |
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const EVP_MD *md; |
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md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); |
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if (md == NULL) |
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return 0; |
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if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md, |
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si->signedAttrs, dig, diglen)) |
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return 0; |
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return 1; |
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} |
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/* Add a msgSigDigest attribute to a SignerInfo */ |
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int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src) |
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{ |
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unsigned char dig[EVP_MAX_MD_SIZE]; |
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unsigned int diglen; |
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if (!cms_msgSigDigest(src, dig, &diglen)) { |
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CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR); |
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return 0; |
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} |
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if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest, |
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V_ASN1_OCTET_STRING, dig, diglen)) { |
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CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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return 1; |
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} |
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/* Verify signed receipt after it has already passed normal CMS verify */ |
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int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms) |
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{ |
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int r = 0, i; |
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CMS_ReceiptRequest *rr = NULL; |
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CMS_Receipt *rct = NULL; |
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STACK_OF(CMS_SignerInfo) *sis, *osis; |
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CMS_SignerInfo *si, *osi = NULL; |
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ASN1_OCTET_STRING *msig, **pcont; |
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ASN1_OBJECT *octype; |
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unsigned char dig[EVP_MAX_MD_SIZE]; |
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unsigned int diglen; |
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/* Get SignerInfos, also checks SignedData content type */ |
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osis = CMS_get0_SignerInfos(req_cms); |
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sis = CMS_get0_SignerInfos(cms); |
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if (!osis || !sis) |
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goto err; |
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if (sk_CMS_SignerInfo_num(sis) != 1) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER); |
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goto err; |
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} |
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/* Check receipt content type */ |
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if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT); |
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goto err; |
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} |
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/* Extract and decode receipt content */ |
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pcont = CMS_get0_content(cms); |
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if (!pcont || !*pcont) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT); |
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goto err; |
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} |
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rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt)); |
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if (!rct) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR); |
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goto err; |
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} |
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/* Locate original request */ |
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for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) { |
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osi = sk_CMS_SignerInfo_value(osis, i); |
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if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue)) |
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break; |
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} |
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if (i == sk_CMS_SignerInfo_num(osis)) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE); |
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goto err; |
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} |
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si = sk_CMS_SignerInfo_value(sis, 0); |
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/* Get msgSigDigest value and compare */ |
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msig = CMS_signed_get0_data_by_OBJ(si, |
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OBJ_nid2obj |
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(NID_id_smime_aa_msgSigDigest), -3, |
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V_ASN1_OCTET_STRING); |
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if (!msig) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST); |
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goto err; |
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} |
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if (!cms_msgSigDigest(osi, dig, &diglen)) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR); |
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goto err; |
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} |
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if (diglen != (unsigned int)msig->length) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH); |
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goto err; |
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} |
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if (memcmp(dig, msig->data, diglen)) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, |
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CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE); |
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goto err; |
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} |
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/* Compare content types */ |
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octype = CMS_signed_get0_data_by_OBJ(osi, |
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OBJ_nid2obj(NID_pkcs9_contentType), |
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-3, V_ASN1_OBJECT); |
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if (!octype) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE); |
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goto err; |
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} |
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/* Compare details in receipt request */ |
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if (OBJ_cmp(octype, rct->contentType)) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH); |
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goto err; |
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} |
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/* Get original receipt request details */ |
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if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST); |
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goto err; |
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} |
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if (ASN1_STRING_cmp(rr->signedContentIdentifier, |
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rct->signedContentIdentifier)) { |
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CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH); |
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goto err; |
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} |
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r = 1; |
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err: |
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if (rr) |
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CMS_ReceiptRequest_free(rr); |
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if (rct) |
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M_ASN1_free_of(rct, CMS_Receipt); |
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return r; |
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} |
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/* |
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* Encode a Receipt into an OCTET STRING read for including into content of a |
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* SignedData ContentInfo. |
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*/ |
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ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si) |
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{ |
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CMS_Receipt rct; |
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CMS_ReceiptRequest *rr = NULL; |
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ASN1_OBJECT *ctype; |
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ASN1_OCTET_STRING *os = NULL; |
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/* Get original receipt request */ |
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/* Get original receipt request details */ |
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if (CMS_get1_ReceiptRequest(si, &rr) <= 0) { |
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CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST); |
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goto err; |
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} |
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/* Get original content type */ |
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ctype = CMS_signed_get0_data_by_OBJ(si, |
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OBJ_nid2obj(NID_pkcs9_contentType), |
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-3, V_ASN1_OBJECT); |
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if (!ctype) { |
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CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE); |
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goto err; |
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} |
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rct.version = 1; |
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rct.contentType = ctype; |
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rct.signedContentIdentifier = rr->signedContentIdentifier; |
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rct.originatorSignatureValue = si->signature; |
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os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL); |
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err: |
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if (rr) |
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CMS_ReceiptRequest_free(rr); |
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return os; |
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}
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