1 /* $OpenBSD: ocsp_srv.c,v 1.13 2023/07/08 10:44:00 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 #include "ocsp_local.h" 69 70 /* Utility functions related to sending OCSP responses and extracting 71 * relevant information from the request. 72 */ 73 74 int 75 OCSP_request_onereq_count(OCSP_REQUEST *req) 76 { 77 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); 78 } 79 LCRYPTO_ALIAS(OCSP_request_onereq_count); 80 81 OCSP_ONEREQ * 82 OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) 83 { 84 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); 85 } 86 LCRYPTO_ALIAS(OCSP_request_onereq_get0); 87 88 OCSP_CERTID * 89 OCSP_onereq_get0_id(OCSP_ONEREQ *one) 90 { 91 return one->reqCert; 92 } 93 LCRYPTO_ALIAS(OCSP_onereq_get0_id); 94 95 int 96 OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, 97 ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid) 98 { 99 if (!cid) 100 return 0; 101 if (pmd) 102 *pmd = cid->hashAlgorithm->algorithm; 103 if (piNameHash) 104 *piNameHash = cid->issuerNameHash; 105 if (pikeyHash) 106 *pikeyHash = cid->issuerKeyHash; 107 if (pserial) 108 *pserial = cid->serialNumber; 109 return 1; 110 } 111 LCRYPTO_ALIAS(OCSP_id_get0_info); 112 113 int 114 OCSP_request_is_signed(OCSP_REQUEST *req) 115 { 116 if (req->optionalSignature) 117 return 1; 118 return 0; 119 } 120 LCRYPTO_ALIAS(OCSP_request_is_signed); 121 122 /* Create an OCSP response and encode an optional basic response */ 123 OCSP_RESPONSE * 124 OCSP_response_create(int status, OCSP_BASICRESP *bs) 125 { 126 OCSP_RESPONSE *rsp = NULL; 127 128 if (!(rsp = OCSP_RESPONSE_new())) 129 goto err; 130 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) 131 goto err; 132 if (!bs) 133 return rsp; 134 if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) 135 goto err; 136 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); 137 if (!ASN1_item_pack(bs, &OCSP_BASICRESP_it, 138 &rsp->responseBytes->response)) 139 goto err; 140 return rsp; 141 142 err: 143 if (rsp) 144 OCSP_RESPONSE_free(rsp); 145 return NULL; 146 } 147 LCRYPTO_ALIAS(OCSP_response_create); 148 149 OCSP_SINGLERESP * 150 OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status, 151 int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd) 152 { 153 OCSP_SINGLERESP *single = NULL; 154 OCSP_CERTSTATUS *cs; 155 OCSP_REVOKEDINFO *ri; 156 157 if (!rsp->tbsResponseData->responses && 158 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) 159 goto err; 160 161 if (!(single = OCSP_SINGLERESP_new())) 162 goto err; 163 164 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) 165 goto err; 166 if (nextupd && 167 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) 168 goto err; 169 170 OCSP_CERTID_free(single->certId); 171 172 if (!(single->certId = OCSP_CERTID_dup(cid))) 173 goto err; 174 175 cs = single->certStatus; 176 switch (cs->type = status) { 177 case V_OCSP_CERTSTATUS_REVOKED: 178 if (!revtime) { 179 OCSPerror(OCSP_R_NO_REVOKED_TIME); 180 goto err; 181 } 182 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) 183 goto err; 184 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) 185 goto err; 186 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) { 187 if (!(ri->revocationReason = ASN1_ENUMERATED_new())) 188 goto err; 189 if (!(ASN1_ENUMERATED_set(ri->revocationReason, 190 reason))) 191 goto err; 192 } 193 break; 194 195 case V_OCSP_CERTSTATUS_GOOD: 196 cs->value.good = ASN1_NULL_new(); 197 break; 198 199 case V_OCSP_CERTSTATUS_UNKNOWN: 200 cs->value.unknown = ASN1_NULL_new(); 201 break; 202 203 default: 204 goto err; 205 } 206 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) 207 goto err; 208 return single; 209 210 err: 211 OCSP_SINGLERESP_free(single); 212 return NULL; 213 } 214 LCRYPTO_ALIAS(OCSP_basic_add1_status); 215 216 /* Add a certificate to an OCSP request */ 217 int 218 OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) 219 { 220 if (!resp->certs && !(resp->certs = sk_X509_new_null())) 221 return 0; 222 223 if (!sk_X509_push(resp->certs, cert)) 224 return 0; 225 X509_up_ref(cert); 226 return 1; 227 } 228 LCRYPTO_ALIAS(OCSP_basic_add1_cert); 229 230 int 231 OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key, 232 const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags) 233 { 234 int i; 235 OCSP_RESPID *rid; 236 237 if (!X509_check_private_key(signer, key)) { 238 OCSPerror(OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); 239 goto err; 240 } 241 242 if (!(flags & OCSP_NOCERTS)) { 243 if (!OCSP_basic_add1_cert(brsp, signer)) 244 goto err; 245 for (i = 0; i < sk_X509_num(certs); i++) { 246 X509 *tmpcert = sk_X509_value(certs, i); 247 if (!OCSP_basic_add1_cert(brsp, tmpcert)) 248 goto err; 249 } 250 } 251 252 rid = brsp->tbsResponseData->responderId; 253 if (flags & OCSP_RESPID_KEY) { 254 unsigned char md[SHA_DIGEST_LENGTH]; 255 256 X509_pubkey_digest(signer, EVP_sha1(), md, NULL); 257 if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) 258 goto err; 259 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, 260 SHA_DIGEST_LENGTH))) 261 goto err; 262 rid->type = V_OCSP_RESPID_KEY; 263 } else { 264 if (!X509_NAME_set(&rid->value.byName, 265 X509_get_subject_name(signer))) 266 goto err; 267 rid->type = V_OCSP_RESPID_NAME; 268 } 269 270 if (!(flags & OCSP_NOTIME) && 271 !ASN1_GENERALIZEDTIME_set(brsp->tbsResponseData->producedAt, time(NULL))) 272 goto err; 273 274 /* Right now, I think that not doing double hashing is the right 275 thing. -- Richard Levitte */ 276 277 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) 278 goto err; 279 280 return 1; 281 282 err: 283 return 0; 284 } 285 LCRYPTO_ALIAS(OCSP_basic_sign); 286