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 70 ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); 71 72 ASN1_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 81 /* PKCS#7 streaming support */ 82 static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 83 void *exarg) 84 { 85 ASN1_STREAM_ARG *sarg = exarg; 86 PKCS7 **pp7 = (PKCS7 **)pval; 87 88 switch (operation) { 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) 115 116 IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) 117 118 IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) 119 120 ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { 121 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), 122 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), 123 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), 124 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), 125 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), 126 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) 127 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) 128 129 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) 130 131 /* Minor tweak to operation: free up EVP_PKEY */ 132 static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 133 void *exarg) 134 { 135 if (operation == ASN1_OP_FREE_POST) { 136 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; 137 EVP_PKEY_free(si->pkey); 138 } 139 return 1; 140 } 141 142 ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { 143 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), 144 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 145 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), 146 /* NB this should be a SET OF but we use a SEQUENCE OF so the 147 * original order * is retained when the structure is reencoded. 148 * Since the attributes are implicitly tagged this will not affect 149 * the encoding. 150 */ 151 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), 152 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), 153 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), 154 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) 155 } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) 156 157 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) 158 159 ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { 160 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), 161 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) 162 } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) 163 164 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) 165 166 ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { 167 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), 168 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 169 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) 170 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) 171 172 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) 173 174 /* Minor tweak to operation: free up X509 */ 175 static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 176 void *exarg) 177 { 178 if (operation == ASN1_OP_FREE_POST) { 179 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; 180 X509_free(ri->cert); 181 } 182 return 1; 183 } 184 185 ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { 186 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), 187 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), 188 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), 189 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) 190 } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) 191 192 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) 193 194 ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { 195 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), 196 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), 197 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0) 198 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) 199 200 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) 201 202 ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { 203 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), 204 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), 205 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), 206 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), 207 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), 208 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), 209 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) 210 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) 211 212 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) 213 214 ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { 215 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), 216 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) 217 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) 218 219 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) 220 221 ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { 222 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), 223 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), 224 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), 225 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) 226 } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) 227 228 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) 229 230 /* Specials for authenticated attributes */ 231 232 /* 233 * When signing attributes we want to reorder them to match the sorted 234 * encoding. 235 */ 236 237 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 238 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 239 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) 240 241 /* 242 * When verifying attributes we need to use the received order. So we use 243 * SEQUENCE OF and tag it to SET OF 244 */ 245 246 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 247 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 248 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) 249 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) 250 251 IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7) 252