pk7_asn1.c revision 296341
1250199Sgrehan/* pk7_asn.c */ 2322612Ssephe/* 3250199Sgrehan * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4250199Sgrehan * 2000. 5250199Sgrehan */ 6250199Sgrehan/* ==================================================================== 7250199Sgrehan * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 8250199Sgrehan * 9250199Sgrehan * Redistribution and use in source and binary forms, with or without 10250199Sgrehan * modification, are permitted provided that the following conditions 11250199Sgrehan * are met: 12250199Sgrehan * 13250199Sgrehan * 1. Redistributions of source code must retain the above copyright 14250199Sgrehan * notice, this list of conditions and the following disclaimer. 15250199Sgrehan * 16250199Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 17250199Sgrehan * notice, this list of conditions and the following disclaimer in 18250199Sgrehan * the documentation and/or other materials provided with the 19250199Sgrehan * distribution. 20250199Sgrehan * 21250199Sgrehan * 3. All advertising materials mentioning features or use of this 22250199Sgrehan * software must display the following acknowledgment: 23250199Sgrehan * "This product includes software developed by the OpenSSL Project 24250199Sgrehan * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25250199Sgrehan * 26250199Sgrehan * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27250199Sgrehan * endorse or promote products derived from this software without 28250199Sgrehan * prior written permission. For written permission, please contact 29264177Simp * licensing@OpenSSL.org. 30264177Simp * 31264177Simp * 5. Products derived from this software may not be called "OpenSSL" 32308626Ssephe * nor may "OpenSSL" appear in their names without prior written 33308626Ssephe * permission of the OpenSSL Project. 34308626Ssephe * 35250199Sgrehan * 6. Redistributions of any form whatsoever must retain the following 36250199Sgrehan * acknowledgment: 37308626Ssephe * "This product includes software developed by the OpenSSL Project 38308624Ssephe * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39308624Ssephe * 40308624Ssephe * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41308624Ssephe * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42308624Ssephe * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43307461Ssephe * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44307461Ssephe * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45308624Ssephe * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46307500Ssephe * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47308624Ssephe * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48307613Ssephe * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49307613Ssephe * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50308624Ssephe * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51250199Sgrehan * OF THE POSSIBILITY OF SUCH DAMAGE. 52250199Sgrehan * ==================================================================== 53308624Ssephe * 54308624Ssephe * This product includes cryptographic software written by Eric Young 55307475Ssephe * (eay@cryptsoft.com). This product includes software written by Tim 56308624Ssephe * Hudson (tjh@cryptsoft.com). 57308624Ssephe * 58308624Ssephe */ 59308624Ssephe 60308625Ssephe#include <stdio.h> 61308627Ssephe#include "cryptlib.h" 62250199Sgrehan#include <openssl/asn1t.h> 63307484Ssephe#include <openssl/pkcs7.h> 64307484Ssephe#include <openssl/x509.h> 65307484Ssephe 66307484Ssephe/* PKCS#7 ASN1 module */ 67307484Ssephe 68307613Ssephe/* This is the ANY DEFINED BY table for the top level PKCS#7 structure */ 69307613Ssephe 70307613SsepheASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); 71307613Ssephe 72307613SsepheASN1_ADB(PKCS7) = { 73307613Ssephe ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)), 74307613Ssephe ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)), 75307613Ssephe ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)), 76307613Ssephe ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)), 77307613Ssephe ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)), 78307613Ssephe ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0)) 79307613Ssephe} ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL); 80308626Ssephe 81308626Ssephe/* PKCS#7 streaming support */ 82308626Ssephestatic int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 83308626Ssephe void *exarg) 84308626Ssephe{ 85308626Ssephe ASN1_STREAM_ARG *sarg = exarg; 86308626Ssephe PKCS7 **pp7 = (PKCS7 **)pval; 87308626Ssephe 88308626Ssephe switch (operation) { 89308626Ssephe 90308626Ssephe case ASN1_OP_STREAM_PRE: 91308626Ssephe if (PKCS7_stream(&sarg->boundary, *pp7) <= 0) 92308626Ssephe return 0; 93308626Ssephe case ASN1_OP_DETACHED_PRE: 94308626Ssephe sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out); 95308626Ssephe if (!sarg->ndef_bio) 96308626Ssephe return 0; 97307473Ssephe break; 98307484Ssephe 99307484Ssephe case ASN1_OP_STREAM_POST: 100307484Ssephe case ASN1_OP_DETACHED_POST: 101307484Ssephe if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0) 102307484Ssephe return 0; 103307484Ssephe break; 104307484Ssephe 105307484Ssephe } 106307484Ssephe return 1; 107307484Ssephe} 108307484Ssephe 109307484SsepheASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = { 110307484Ssephe ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT), 111307484Ssephe ASN1_ADB_OBJECT(PKCS7) 112307498Ssephe}ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7) 113308626Ssephe 114250199SgrehanIMPLEMENT_ASN1_FUNCTIONS(PKCS7) 115307484Ssephe 116307498SsepheIMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) 117250199Sgrehan 118308626SsepheIMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) 119307498Ssephe 120307498SsepheASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { 121307498Ssephe ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), 122250199Sgrehan ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), 123250199Sgrehan ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), 124250199Sgrehan ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), 125307498Ssephe ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), 126307498Ssephe ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) 127308626Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) 128307498Ssephe 129307498SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) 130307484Ssephe 131307498Ssephe/* Minor tweak to operation: free up EVP_PKEY */ 132307492Ssephestatic int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 133307498Ssephe void *exarg) 134307492Ssephe{ 135250199Sgrehan if (operation == ASN1_OP_FREE_POST) { 136307482Ssephe PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; 137307482Ssephe EVP_PKEY_free(si->pkey); 138307482Ssephe } 139307482Ssephe return 1; 140307482Ssephe} 141307482Ssephe 142307482SsepheASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { 143307482Ssephe ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), 144307482Ssephe ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 145308626Ssephe ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), 146307482Ssephe /* NB this should be a SET OF but we use a SEQUENCE OF so the 147307482Ssephe * original order * is retained when the structure is reencoded. 148250199Sgrehan * Since the attributes are implicitly tagged this will not affect 149308626Ssephe * the encoding. 150307498Ssephe */ 151250199Sgrehan ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), 152250199Sgrehan ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), 153250199Sgrehan ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), 154250199Sgrehan ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) 155307508Ssephe} ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) 156307508Ssephe 157250199SgrehanIMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) 158307492Ssephe 159307487SsepheASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { 160250199Sgrehan ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), 161307492Ssephe ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) 162307487Ssephe} ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) 163307492Ssephe 164307487SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) 165307490Ssephe 166307492SsepheASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { 167307492Ssephe ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), 168307490Ssephe ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 169307487Ssephe ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) 170307490Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) 171250199Sgrehan 172250199SgrehanIMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) 173307508Ssephe 174307508Ssephe/* Minor tweak to operation: free up X509 */ 175250199Sgrehanstatic int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 176307490Ssephe void *exarg) 177307490Ssephe{ 178250199Sgrehan if (operation == ASN1_OP_FREE_POST) { 179307492Ssephe PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; 180307490Ssephe X509_free(ri->cert); 181307492Ssephe } 182307490Ssephe return 1; 183307490Ssephe} 184307490Ssephe 185307490SsepheASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { 186307490Ssephe ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), 187307490Ssephe ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 188307490Ssephe ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), 189250199Sgrehan ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) 190250199Sgrehan} ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) 191324477Ssephe 192324477SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) 193324477Ssephe 194324477SsepheASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { 195324477Ssephe ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), 196324477Ssephe ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), 197324477Ssephe ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0) 198324477Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) 199324477Ssephe 200324477SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) 201324477Ssephe 202324477SsepheASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { 203324477Ssephe ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), 204324477Ssephe ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 205324477Ssephe ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), 206324477Ssephe ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), 207324477Ssephe ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), 208324477Ssephe ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), 209307484Ssephe ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) 210307491Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) 211308624Ssephe 212250199SgrehanIMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) 213307484Ssephe 214307491SsepheASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { 215307484Ssephe ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), 216250199Sgrehan ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) 217307484Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) 218307484Ssephe 219307484SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) 220307484Ssephe 221307484SsepheASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { 222307484Ssephe ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), 223307484Ssephe ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), 224307484Ssephe ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), 225307484Ssephe ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) 226307484Ssephe} ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) 227307484Ssephe 228307484SsepheIMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) 229307484Ssephe 230307484Ssephe/* Specials for authenticated attributes */ 231307484Ssephe 232307484Ssephe/* 233307484Ssephe * When signing attributes we want to reorder them to match the sorted 234307484Ssephe * encoding. 235307484Ssephe */ 236307484Ssephe 237307484SsepheASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 238307484Ssephe ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 239250199SgrehanASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) 240307484Ssephe 241250199Sgrehan/* 242250199Sgrehan * When verifying attributes we need to use the received order. So we use 243307484Ssephe * SEQUENCE OF and tag it to SET OF 244307484Ssephe */ 245250199Sgrehan 246307484SsepheASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 247308519Ssephe ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 248307484Ssephe V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 249307484SsepheASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) 250307484Ssephe 251307484SsepheIMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7) 252307484Ssephe