1 /* pk7_asn.c */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * 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 69 ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); 70 71 ASN1_ADB(PKCS7) = { 72 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)), 73 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)), 74 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)), 75 ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)), 76 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)), 77 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0)) 78 } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL); 79 80 /* PKCS#7 streaming support */ 81 static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 82 void *exarg) 83 { 84 ASN1_STREAM_ARG *sarg = exarg; 85 PKCS7 **pp7 = (PKCS7 **)pval; 86 87 switch(operation) 88 { 89 90 case ASN1_OP_STREAM_PRE: 91 if (PKCS7_stream(&sarg->boundary, *pp7) <= 0) 92 return 0; 93 case ASN1_OP_DETACHED_PRE: 94 sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out); 95 if (!sarg->ndef_bio) 96 return 0; 97 break; 98 99 case ASN1_OP_STREAM_POST: 100 case ASN1_OP_DETACHED_POST: 101 if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0) 102 return 0; 103 break; 104 105 } 106 return 1; 107 } 108 109 ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = { 110 ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT), 111 ASN1_ADB_OBJECT(PKCS7) 112 }ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7) 113 114 IMPLEMENT_ASN1_FUNCTIONS(PKCS7) 115 IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) 116 IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) 117 118 ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { 119 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), 120 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), 121 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), 122 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), 123 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), 124 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) 125 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) 126 127 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) 128 129 /* Minor tweak to operation: free up EVP_PKEY */ 130 static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 131 void *exarg) 132 { 133 if(operation == ASN1_OP_FREE_POST) { 134 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; 135 EVP_PKEY_free(si->pkey); 136 } 137 return 1; 138 } 139 140 ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { 141 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), 142 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 143 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), 144 /* NB this should be a SET OF but we use a SEQUENCE OF so the 145 * original order * is retained when the structure is reencoded. 146 * Since the attributes are implicitly tagged this will not affect 147 * the encoding. 148 */ 149 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), 150 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), 151 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), 152 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) 153 } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) 154 155 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) 156 157 ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { 158 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), 159 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) 160 } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) 161 162 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) 163 164 ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { 165 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), 166 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 167 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) 168 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) 169 170 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) 171 172 /* Minor tweak to operation: free up X509 */ 173 static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 174 void *exarg) 175 { 176 if(operation == ASN1_OP_FREE_POST) { 177 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; 178 X509_free(ri->cert); 179 } 180 return 1; 181 } 182 183 ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { 184 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), 185 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 186 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), 187 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) 188 } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) 189 190 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) 191 192 ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { 193 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), 194 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), 195 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0) 196 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) 197 198 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) 199 200 ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { 201 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), 202 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 203 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), 204 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), 205 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), 206 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), 207 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) 208 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) 209 210 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) 211 212 ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { 213 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), 214 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) 215 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) 216 217 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) 218 219 ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { 220 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), 221 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), 222 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), 223 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) 224 } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) 225 226 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) 227 228 /* Specials for authenticated attributes */ 229 230 /* When signing attributes we want to reorder them to match the sorted 231 * encoding. 232 */ 233 234 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 235 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 236 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) 237 238 /* When verifying attributes we need to use the received order. So 239 * we use SEQUENCE OF and tag it to SET OF 240 */ 241 242 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 243 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 244 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 245 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) 246 247 IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7) 248