ocsp_srv.c revision 296341
1/* ocsp_srv.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 2001. 5 */ 6/* ==================================================================== 7 * Copyright (c) 1998-2001 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 * openssl-core@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/objects.h> 63#include <openssl/rand.h> 64#include <openssl/x509.h> 65#include <openssl/pem.h> 66#include <openssl/x509v3.h> 67#include <openssl/ocsp.h> 68 69/* 70 * Utility functions related to sending OCSP responses and extracting 71 * relevant information from the request. 72 */ 73 74int OCSP_request_onereq_count(OCSP_REQUEST *req) 75{ 76 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); 77} 78 79OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) 80{ 81 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); 82} 83 84OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one) 85{ 86 return one->reqCert; 87} 88 89int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, 90 ASN1_OCTET_STRING **pikeyHash, 91 ASN1_INTEGER **pserial, OCSP_CERTID *cid) 92{ 93 if (!cid) 94 return 0; 95 if (pmd) 96 *pmd = cid->hashAlgorithm->algorithm; 97 if (piNameHash) 98 *piNameHash = cid->issuerNameHash; 99 if (pikeyHash) 100 *pikeyHash = cid->issuerKeyHash; 101 if (pserial) 102 *pserial = cid->serialNumber; 103 return 1; 104} 105 106int OCSP_request_is_signed(OCSP_REQUEST *req) 107{ 108 if (req->optionalSignature) 109 return 1; 110 return 0; 111} 112 113/* Create an OCSP response and encode an optional basic response */ 114OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs) 115{ 116 OCSP_RESPONSE *rsp = NULL; 117 118 if (!(rsp = OCSP_RESPONSE_new())) 119 goto err; 120 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) 121 goto err; 122 if (!bs) 123 return rsp; 124 if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) 125 goto err; 126 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); 127 if (!ASN1_item_pack 128 (bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response)) 129 goto err; 130 return rsp; 131 err: 132 if (rsp) 133 OCSP_RESPONSE_free(rsp); 134 return NULL; 135} 136 137OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, 138 OCSP_CERTID *cid, 139 int status, int reason, 140 ASN1_TIME *revtime, 141 ASN1_TIME *thisupd, 142 ASN1_TIME *nextupd) 143{ 144 OCSP_SINGLERESP *single = NULL; 145 OCSP_CERTSTATUS *cs; 146 OCSP_REVOKEDINFO *ri; 147 148 if (!rsp->tbsResponseData->responses && 149 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) 150 goto err; 151 152 if (!(single = OCSP_SINGLERESP_new())) 153 goto err; 154 155 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) 156 goto err; 157 if (nextupd && 158 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) 159 goto err; 160 161 OCSP_CERTID_free(single->certId); 162 163 if (!(single->certId = OCSP_CERTID_dup(cid))) 164 goto err; 165 166 cs = single->certStatus; 167 switch (cs->type = status) { 168 case V_OCSP_CERTSTATUS_REVOKED: 169 if (!revtime) { 170 OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS, OCSP_R_NO_REVOKED_TIME); 171 goto err; 172 } 173 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) 174 goto err; 175 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) 176 goto err; 177 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) { 178 if (!(ri->revocationReason = ASN1_ENUMERATED_new())) 179 goto err; 180 if (!(ASN1_ENUMERATED_set(ri->revocationReason, reason))) 181 goto err; 182 } 183 break; 184 185 case V_OCSP_CERTSTATUS_GOOD: 186 cs->value.good = ASN1_NULL_new(); 187 break; 188 189 case V_OCSP_CERTSTATUS_UNKNOWN: 190 cs->value.unknown = ASN1_NULL_new(); 191 break; 192 193 default: 194 goto err; 195 196 } 197 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) 198 goto err; 199 return single; 200 err: 201 OCSP_SINGLERESP_free(single); 202 return NULL; 203} 204 205/* Add a certificate to an OCSP request */ 206 207int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) 208{ 209 if (!resp->certs && !(resp->certs = sk_X509_new_null())) 210 return 0; 211 212 if (!sk_X509_push(resp->certs, cert)) 213 return 0; 214 CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509); 215 return 1; 216} 217 218int OCSP_basic_sign(OCSP_BASICRESP *brsp, 219 X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, 220 STACK_OF(X509) *certs, unsigned long flags) 221{ 222 int i; 223 OCSP_RESPID *rid; 224 225 if (!X509_check_private_key(signer, key)) { 226 OCSPerr(OCSP_F_OCSP_BASIC_SIGN, 227 OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); 228 goto err; 229 } 230 231 if (!(flags & OCSP_NOCERTS)) { 232 if (!OCSP_basic_add1_cert(brsp, signer)) 233 goto err; 234 for (i = 0; i < sk_X509_num(certs); i++) { 235 X509 *tmpcert = sk_X509_value(certs, i); 236 if (!OCSP_basic_add1_cert(brsp, tmpcert)) 237 goto err; 238 } 239 } 240 241 rid = brsp->tbsResponseData->responderId; 242 if (flags & OCSP_RESPID_KEY) { 243 unsigned char md[SHA_DIGEST_LENGTH]; 244 X509_pubkey_digest(signer, EVP_sha1(), md, NULL); 245 if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) 246 goto err; 247 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, SHA_DIGEST_LENGTH))) 248 goto err; 249 rid->type = V_OCSP_RESPID_KEY; 250 } else { 251 if (!X509_NAME_set(&rid->value.byName, X509_get_subject_name(signer))) 252 goto err; 253 rid->type = V_OCSP_RESPID_NAME; 254 } 255 256 if (!(flags & OCSP_NOTIME) && 257 !X509_gmtime_adj(brsp->tbsResponseData->producedAt, 0)) 258 goto err; 259 260 /* 261 * Right now, I think that not doing double hashing is the right thing. 262 * -- Richard Levitte 263 */ 264 265 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) 266 goto err; 267 268 return 1; 269 err: 270 return 0; 271} 272