1 /* ocsp_srv.c */ 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 #include <cryptlib.h> 61 #include <openssl/objects.h> 62 #include <openssl/rand.h> 63 #include <openssl/x509.h> 64 #include <openssl/pem.h> 65 #include <openssl/x509v3.h> 66 #include <openssl/ocsp.h> 67 68 /* Utility functions related to sending OCSP responses and extracting 69 * relevant information from the request. 70 */ 71 72 int OCSP_request_onereq_count(OCSP_REQUEST *req) 73 { 74 return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); 75 } 76 77 OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) 78 { 79 return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); 80 } 81 82 OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one) 83 { 84 return one->reqCert; 85 } 86 87 int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, 88 ASN1_OCTET_STRING **pikeyHash, 89 ASN1_INTEGER **pserial, OCSP_CERTID *cid) 90 { 91 if (!cid) return 0; 92 if (pmd) *pmd = cid->hashAlgorithm->algorithm; 93 if(piNameHash) *piNameHash = cid->issuerNameHash; 94 if (pikeyHash) *pikeyHash = cid->issuerKeyHash; 95 if (pserial) *pserial = cid->serialNumber; 96 return 1; 97 } 98 99 int OCSP_request_is_signed(OCSP_REQUEST *req) 100 { 101 if(req->optionalSignature) return 1; 102 return 0; 103 } 104 105 /* Create an OCSP response and encode an optional basic response */ 106 OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs) 107 { 108 OCSP_RESPONSE *rsp = NULL; 109 110 if (!(rsp = OCSP_RESPONSE_new())) goto err; 111 if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err; 112 if (!bs) return rsp; 113 if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err; 114 rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); 115 if (!ASN1_item_pack(bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response)) 116 goto err; 117 return rsp; 118 err: 119 if (rsp) OCSP_RESPONSE_free(rsp); 120 return NULL; 121 } 122 123 124 OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, 125 OCSP_CERTID *cid, 126 int status, int reason, 127 ASN1_TIME *revtime, 128 ASN1_TIME *thisupd, ASN1_TIME *nextupd) 129 { 130 OCSP_SINGLERESP *single = NULL; 131 OCSP_CERTSTATUS *cs; 132 OCSP_REVOKEDINFO *ri; 133 134 if(!rsp->tbsResponseData->responses && 135 !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) 136 goto err; 137 138 if (!(single = OCSP_SINGLERESP_new())) 139 goto err; 140 141 142 143 if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) 144 goto err; 145 if (nextupd && 146 !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) 147 goto err; 148 149 OCSP_CERTID_free(single->certId); 150 151 if(!(single->certId = OCSP_CERTID_dup(cid))) 152 goto err; 153 154 cs = single->certStatus; 155 switch(cs->type = status) 156 { 157 case V_OCSP_CERTSTATUS_REVOKED: 158 if (!revtime) 159 { 160 OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS,OCSP_R_NO_REVOKED_TIME); 161 goto err; 162 } 163 if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err; 164 if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) 165 goto err; 166 if (reason != OCSP_REVOKED_STATUS_NOSTATUS) 167 { 168 if (!(ri->revocationReason = ASN1_ENUMERATED_new())) 169 goto err; 170 if (!(ASN1_ENUMERATED_set(ri->revocationReason, 171 reason))) 172 goto err; 173 } 174 break; 175 176 case V_OCSP_CERTSTATUS_GOOD: 177 cs->value.good = ASN1_NULL_new(); 178 break; 179 180 case V_OCSP_CERTSTATUS_UNKNOWN: 181 cs->value.unknown = ASN1_NULL_new(); 182 break; 183 184 default: 185 goto err; 186 187 } 188 if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) 189 goto err; 190 return single; 191 err: 192 OCSP_SINGLERESP_free(single); 193 return NULL; 194 } 195 196 /* Add a certificate to an OCSP request */ 197 198 int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) 199 { 200 if (!resp->certs && !(resp->certs = sk_X509_new_null())) 201 return 0; 202 203 if(!sk_X509_push(resp->certs, cert)) return 0; 204 CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509); 205 return 1; 206 } 207 208 int OCSP_basic_sign(OCSP_BASICRESP *brsp, 209 X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, 210 STACK_OF(X509) *certs, unsigned long flags) 211 { 212 int i; 213 OCSP_RESPID *rid; 214 215 if (!X509_check_private_key(signer, key)) 216 { 217 OCSPerr(OCSP_F_OCSP_BASIC_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); 218 goto err; 219 } 220 221 if(!(flags & OCSP_NOCERTS)) 222 { 223 if(!OCSP_basic_add1_cert(brsp, signer)) 224 goto err; 225 for (i = 0; i < sk_X509_num(certs); i++) 226 { 227 X509 *tmpcert = sk_X509_value(certs, i); 228 if(!OCSP_basic_add1_cert(brsp, tmpcert)) 229 goto err; 230 } 231 } 232 233 rid = brsp->tbsResponseData->responderId; 234 if (flags & OCSP_RESPID_KEY) 235 { 236 unsigned char md[SHA_DIGEST_LENGTH]; 237 X509_pubkey_digest(signer, EVP_sha1(), md, NULL); 238 if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) 239 goto err; 240 if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, SHA_DIGEST_LENGTH))) 241 goto err; 242 rid->type = V_OCSP_RESPID_KEY; 243 } 244 else 245 { 246 if (!X509_NAME_set(&rid->value.byName, 247 X509_get_subject_name(signer))) 248 goto err; 249 rid->type = V_OCSP_RESPID_NAME; 250 } 251 252 if (!(flags & OCSP_NOTIME) && 253 !X509_gmtime_adj(brsp->tbsResponseData->producedAt, 0)) 254 goto err; 255 256 /* Right now, I think that not doing double hashing is the right 257 thing. -- Richard Levitte */ 258 259 if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err; 260 261 return 1; 262 err: 263 return 0; 264 } 265