1 /* $OpenBSD: ocsp_srv.c,v 1.10 2017/01/29 17:49:23 beck Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2001. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1998-2001 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 * openssl-core@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 61 #include <openssl/err.h> 62 #include <openssl/objects.h> 63 #include <openssl/ocsp.h> 64 #include <openssl/pem.h> 65 #include <openssl/x509.h> 66 #include <openssl/x509v3.h> 67 68 /* Utility functions related to sending OCSP responses and extracting 69 * relevant information from the request. 70 */ 71 72 int 73 OCSP_request_onereq_count(OCSP_REQUEST *req) 74 { 75 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); 76 } 77 78 OCSP_ONEREQ * 79 OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) 80 { 81 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); 82 } 83 84 OCSP_CERTID * 85 OCSP_onereq_get0_id(OCSP_ONEREQ *one) 86 { 87 return one->reqCert; 88 } 89 90 int 91 OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, 92 ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid) 93 { 94 if (!cid) 95 return 0; 96 if (pmd) 97 *pmd = cid->hashAlgorithm->algorithm; 98 if (piNameHash) 99 *piNameHash = cid->issuerNameHash; 100 if (pikeyHash) 101 *pikeyHash = cid->issuerKeyHash; 102 if (pserial) 103 *pserial = cid->serialNumber; 104 return 1; 105 } 106 107 int 108 OCSP_request_is_signed(OCSP_REQUEST *req) 109 { 110 if (req->optionalSignature) 111 return 1; 112 return 0; 113 } 114 115 /* Create an OCSP response and encode an optional basic response */ 116 OCSP_RESPONSE * 117 OCSP_response_create(int status, OCSP_BASICRESP *bs) 118 { 119 OCSP_RESPONSE *rsp = NULL; 120 121 if (!(rsp = OCSP_RESPONSE_new())) 122 goto err; 123 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) 124 goto err; 125 if (!bs) 126 return rsp; 127 if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) 128 goto err; 129 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); 130 if (!ASN1_item_pack(bs, &OCSP_BASICRESP_it, 131 &rsp->responseBytes->response)) 132 goto err; 133 return rsp; 134 135 err: 136 if (rsp) 137 OCSP_RESPONSE_free(rsp); 138 return NULL; 139 } 140 141 OCSP_SINGLERESP * 142 OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status, 143 int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd) 144 { 145 OCSP_SINGLERESP *single = NULL; 146 OCSP_CERTSTATUS *cs; 147 OCSP_REVOKEDINFO *ri; 148 149 if (!rsp->tbsResponseData->responses && 150 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) 151 goto err; 152 153 if (!(single = OCSP_SINGLERESP_new())) 154 goto err; 155 156 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) 157 goto err; 158 if (nextupd && 159 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) 160 goto err; 161 162 OCSP_CERTID_free(single->certId); 163 164 if (!(single->certId = OCSP_CERTID_dup(cid))) 165 goto err; 166 167 cs = single->certStatus; 168 switch (cs->type = status) { 169 case V_OCSP_CERTSTATUS_REVOKED: 170 if (!revtime) { 171 OCSPerror(OCSP_R_NO_REVOKED_TIME); 172 goto err; 173 } 174 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) 175 goto err; 176 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) 177 goto err; 178 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) { 179 if (!(ri->revocationReason = ASN1_ENUMERATED_new())) 180 goto err; 181 if (!(ASN1_ENUMERATED_set(ri->revocationReason, 182 reason))) 183 goto err; 184 } 185 break; 186 187 case V_OCSP_CERTSTATUS_GOOD: 188 cs->value.good = ASN1_NULL_new(); 189 break; 190 191 case V_OCSP_CERTSTATUS_UNKNOWN: 192 cs->value.unknown = ASN1_NULL_new(); 193 break; 194 195 default: 196 goto err; 197 } 198 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) 199 goto err; 200 return single; 201 202 err: 203 OCSP_SINGLERESP_free(single); 204 return NULL; 205 } 206 207 /* Add a certificate to an OCSP request */ 208 int 209 OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) 210 { 211 if (!resp->certs && !(resp->certs = sk_X509_new_null())) 212 return 0; 213 214 if (!sk_X509_push(resp->certs, cert)) 215 return 0; 216 CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509); 217 return 1; 218 } 219 220 int 221 OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key, 222 const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags) 223 { 224 int i; 225 OCSP_RESPID *rid; 226 227 if (!X509_check_private_key(signer, key)) { 228 OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); 229 goto err; 230 } 231 232 if (!(flags & OCSP_NOCERTS)) { 233 if (!OCSP_basic_add1_cert(brsp, signer)) 234 goto err; 235 for (i = 0; i < sk_X509_num(certs); i++) { 236 X509 *tmpcert = sk_X509_value(certs, i); 237 if (!OCSP_basic_add1_cert(brsp, tmpcert)) 238 goto err; 239 } 240 } 241 242 rid = brsp->tbsResponseData->responderId; 243 if (flags & OCSP_RESPID_KEY) { 244 unsigned char md[SHA_DIGEST_LENGTH]; 245 246 X509_pubkey_digest(signer, EVP_sha1(), md, NULL); 247 if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) 248 goto err; 249 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, 250 SHA_DIGEST_LENGTH))) 251 goto err; 252 rid->type = V_OCSP_RESPID_KEY; 253 } else { 254 if (!X509_NAME_set(&rid->value.byName, 255 X509_get_subject_name(signer))) 256 goto err; 257 rid->type = V_OCSP_RESPID_NAME; 258 } 259 260 if (!(flags & OCSP_NOTIME) && 261 !ASN1_GENERALIZEDTIME_set(brsp->tbsResponseData->producedAt, time(NULL))) 262 goto err; 263 264 /* Right now, I think that not doing double hashing is the right 265 thing. -- Richard Levitte */ 266 267 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) 268 goto err; 269 270 return 1; 271 272 err: 273 return 0; 274 } 275