251 lines
9.7 KiB
C
251 lines
9.7 KiB
C
/* pk7_asn.c */
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/*
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
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* 2000.
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*/
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/* ====================================================================
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* Copyright (c) 2000 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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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/pkcs7.h>
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#include <openssl/x509.h>
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/* PKCS#7 ASN1 module */
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/* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
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ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
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ASN1_ADB(PKCS7) = {
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ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)),
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ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
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ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
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ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
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ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
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ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
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} ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
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/* PKCS#7 streaming support */
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static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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ASN1_STREAM_ARG *sarg = exarg;
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PKCS7 **pp7 = (PKCS7 **)pval;
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switch (operation) {
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case ASN1_OP_STREAM_PRE:
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if (PKCS7_stream(&sarg->boundary, *pp7) <= 0)
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return 0;
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case ASN1_OP_DETACHED_PRE:
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sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out);
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if (!sarg->ndef_bio)
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return 0;
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break;
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case ASN1_OP_STREAM_POST:
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case ASN1_OP_DETACHED_POST:
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if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0)
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return 0;
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break;
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}
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return 1;
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}
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ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = {
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ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
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ASN1_ADB_OBJECT(PKCS7)
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}ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
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IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
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IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
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ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
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ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
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ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
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ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
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ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
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ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
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ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
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/* Minor tweak to operation: free up EVP_PKEY */
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static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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if (operation == ASN1_OP_FREE_POST) {
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PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
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EVP_PKEY_free(si->pkey);
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}
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return 1;
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}
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ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
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ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
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ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
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ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
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/* NB this should be a SET OF but we use a SEQUENCE OF so the
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* original order * is retained when the structure is reencoded.
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* Since the attributes are implicitly tagged this will not affect
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* the encoding.
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*/
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ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
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ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
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ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
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ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
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} ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
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ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
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ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
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ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
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} ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
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ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
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ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
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ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
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ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
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/* Minor tweak to operation: free up X509 */
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static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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if (operation == ASN1_OP_FREE_POST) {
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PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
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X509_free(ri->cert);
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}
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return 1;
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}
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ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
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ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
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ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
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ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
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ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
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} ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
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ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
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ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
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ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
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ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
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ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
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ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
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ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
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ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
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ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
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ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
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ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
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ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
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ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
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ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
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ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
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ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
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ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
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ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
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ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
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ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
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} ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
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IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
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/* Specials for authenticated attributes */
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/*
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* When signing attributes we want to reorder them to match the sorted
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* encoding.
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*/
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ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) =
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ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
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ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
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/*
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* When verifying attributes we need to use the received order. So we use
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* SEQUENCE OF and tag it to SET OF
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*/
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ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) =
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ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
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V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
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ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
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IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)
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