pk7_asn1.c revision 109998
1130803Smarcel/* pk7_asn.c */ 2130803Smarcel/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3130803Smarcel * project 2000. 4130803Smarcel */ 5130803Smarcel/* ==================================================================== 6130803Smarcel * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 7130803Smarcel * 8130803Smarcel * Redistribution and use in source and binary forms, with or without 9130803Smarcel * modification, are permitted provided that the following conditions 10130803Smarcel * are met: 11130803Smarcel * 12130803Smarcel * 1. Redistributions of source code must retain the above copyright 13130803Smarcel * notice, this list of conditions and the following disclaimer. 14130803Smarcel * 15130803Smarcel * 2. Redistributions in binary form must reproduce the above copyright 16130803Smarcel * notice, this list of conditions and the following disclaimer in 17130803Smarcel * the documentation and/or other materials provided with the 18130803Smarcel * distribution. 19130803Smarcel * 20130803Smarcel * 3. All advertising materials mentioning features or use of this 21130803Smarcel * software must display the following acknowledgment: 22130803Smarcel * "This product includes software developed by the OpenSSL Project 23130803Smarcel * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24130803Smarcel * 25130803Smarcel * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26130803Smarcel * endorse or promote products derived from this software without 27130803Smarcel * prior written permission. For written permission, please contact 28130803Smarcel * licensing@OpenSSL.org. 29 * 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. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 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 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59#include <stdio.h> 60#include "cryptlib.h" 61#include <openssl/asn1t.h> 62#include <openssl/pkcs7.h> 63#include <openssl/x509.h> 64 65/* PKCS#7 ASN1 module */ 66 67/* This is the ANY DEFINED BY table for the top level PKCS#7 structure */ 68 69ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); 70 71ASN1_ADB(PKCS7) = { 72 ADB_ENTRY(NID_pkcs7_data, ASN1_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING, 0)), 73 ADB_ENTRY(NID_pkcs7_signed, ASN1_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)), 74 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)), 75 ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)), 76 ADB_ENTRY(NID_pkcs7_digest, ASN1_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)), 77 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0)) 78} ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL); 79 80ASN1_SEQUENCE(PKCS7) = { 81 ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT), 82 ASN1_ADB_OBJECT(PKCS7) 83}ASN1_SEQUENCE_END(PKCS7) 84 85IMPLEMENT_ASN1_FUNCTIONS(PKCS7) 86IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) 87 88ASN1_SEQUENCE(PKCS7_SIGNED) = { 89 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), 90 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), 91 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), 92 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), 93 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), 94 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) 95} ASN1_SEQUENCE_END(PKCS7_SIGNED) 96 97IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) 98 99/* Minor tweak to operation: free up EVP_PKEY */ 100static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 101{ 102 if(operation == ASN1_OP_FREE_POST) { 103 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; 104 EVP_PKEY_free(si->pkey); 105 } 106 return 1; 107} 108 109ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { 110 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), 111 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 112 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), 113 /* NB this should be a SET OF but we use a SEQUENCE OF so the 114 * original order * is retained when the structure is reencoded. 115 * Since the attributes are implicitly tagged this will not affect 116 * the encoding. 117 */ 118 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), 119 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), 120 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), 121 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) 122} ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) 123 124IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) 125 126ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { 127 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), 128 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) 129} ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) 130 131IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) 132 133ASN1_SEQUENCE(PKCS7_ENVELOPE) = { 134 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), 135 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 136 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) 137} ASN1_SEQUENCE_END(PKCS7_ENVELOPE) 138 139IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) 140 141/* Minor tweak to operation: free up X509 */ 142static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 143{ 144 if(operation == ASN1_OP_FREE_POST) { 145 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; 146 X509_free(ri->cert); 147 } 148 return 1; 149} 150 151ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { 152 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), 153 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 154 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), 155 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) 156} ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) 157 158IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) 159 160ASN1_SEQUENCE(PKCS7_ENC_CONTENT) = { 161 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), 162 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), 163 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING, 0) 164} ASN1_SEQUENCE_END(PKCS7_ENC_CONTENT) 165 166IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) 167 168ASN1_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { 169 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), 170 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 171 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), 172 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), 173 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), 174 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), 175 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) 176} ASN1_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) 177 178IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) 179 180ASN1_SEQUENCE(PKCS7_ENCRYPT) = { 181 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), 182 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) 183} ASN1_SEQUENCE_END(PKCS7_ENCRYPT) 184 185IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) 186 187ASN1_SEQUENCE(PKCS7_DIGEST) = { 188 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), 189 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), 190 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), 191 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) 192} ASN1_SEQUENCE_END(PKCS7_DIGEST) 193 194IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) 195 196/* Specials for authenticated attributes */ 197 198/* When signing attributes we want to reorder them to match the sorted 199 * encoding. 200 */ 201 202ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 203 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 204ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) 205 206/* When verifying attributes we need to use the received order. So 207 * we use SEQUENCE OF and tag it to SET OF 208 */ 209 210ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 211 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 212 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 213ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) 214