pk7_asn1.c revision 296465
1/* pk7_asn.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 2000. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60#include <stdio.h> 61#include "cryptlib.h" 62#include <openssl/asn1t.h> 63#include <openssl/pkcs7.h> 64#include <openssl/x509.h> 65 66/* PKCS#7 ASN1 module */ 67 68/* This is the ANY DEFINED BY table for the top level PKCS#7 structure */ 69 70ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); 71 72ASN1_ADB(PKCS7) = { 73 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)), 74 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)), 75 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)), 76 ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)), 77 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)), 78 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0)) 79} ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL); 80 81ASN1_NDEF_SEQUENCE(PKCS7) = { 82 ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT), 83 ASN1_ADB_OBJECT(PKCS7) 84}ASN1_NDEF_SEQUENCE_END(PKCS7) 85 86IMPLEMENT_ASN1_FUNCTIONS(PKCS7) 87IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) 88IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) 89 90ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { 91 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), 92 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), 93 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), 94 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), 95 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), 96 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) 97} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) 98 99IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) 100 101/* Minor tweak to operation: free up EVP_PKEY */ 102static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 103{ 104 if (operation == ASN1_OP_FREE_POST) { 105 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; 106 EVP_PKEY_free(si->pkey); 107 } 108 return 1; 109} 110 111ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { 112 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), 113 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 114 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), 115 /* NB this should be a SET OF but we use a SEQUENCE OF so the 116 * original order * is retained when the structure is reencoded. 117 * Since the attributes are implicitly tagged this will not affect 118 * the encoding. 119 */ 120 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), 121 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), 122 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), 123 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) 124} ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) 125 126IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) 127 128ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { 129 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), 130 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) 131} ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) 132 133IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) 134 135ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { 136 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), 137 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 138 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) 139} ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) 140 141IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) 142 143/* Minor tweak to operation: free up X509 */ 144static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 145{ 146 if (operation == ASN1_OP_FREE_POST) { 147 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; 148 X509_free(ri->cert); 149 } 150 return 1; 151} 152 153ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { 154 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), 155 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 156 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), 157 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) 158} ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) 159 160IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) 161 162ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { 163 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), 164 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), 165 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING, 0) 166} ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) 167 168IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) 169 170ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { 171 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), 172 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 173 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), 174 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), 175 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), 176 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), 177 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) 178} ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) 179 180IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) 181 182ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { 183 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), 184 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) 185} ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) 186 187IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) 188 189ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { 190 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), 191 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), 192 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), 193 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) 194} ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) 195 196IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) 197 198/* Specials for authenticated attributes */ 199 200/* 201 * When signing attributes we want to reorder them to match the sorted 202 * encoding. 203 */ 204 205ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 206 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 207ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) 208 209/* 210 * When verifying attributes we need to use the received order. So we use 211 * SEQUENCE OF and tag it to SET OF 212 */ 213 214ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 215 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 216 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 217ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) 218