Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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) |