/* * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include "internal/cryptlib.h" #include #include #include #include #include #include "ocsp_lcl.h" /* * Utility functions related to sending OCSP responses and extracting * relevant information from the request. */ int OCSP_request_onereq_count(OCSP_REQUEST *req) { return sk_OCSP_ONEREQ_num(req->tbsRequest.requestList); } OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) { return sk_OCSP_ONEREQ_value(req->tbsRequest.requestList, i); } OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one) { return one->reqCert; } int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial, OCSP_CERTID *cid) { if (!cid) return 0; if (pmd) *pmd = cid->hashAlgorithm.algorithm; if (piNameHash) *piNameHash = &cid->issuerNameHash; if (pikeyHash) *pikeyHash = &cid->issuerKeyHash; if (pserial) *pserial = &cid->serialNumber; return 1; } int OCSP_request_is_signed(OCSP_REQUEST *req) { if (req->optionalSignature) return 1; return 0; } /* Create an OCSP response and encode an optional basic response */ OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs) { OCSP_RESPONSE *rsp = NULL; if ((rsp = OCSP_RESPONSE_new()) == NULL) goto err; if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err; if (!bs) return rsp; if ((rsp->responseBytes = OCSP_RESPBYTES_new()) == NULL) goto err; rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); if (!ASN1_item_pack (bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response)) goto err; return rsp; err: OCSP_RESPONSE_free(rsp); return NULL; } OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid, int status, int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd, ASN1_TIME *nextupd) { OCSP_SINGLERESP *single = NULL; OCSP_CERTSTATUS *cs; OCSP_REVOKEDINFO *ri; if (rsp->tbsResponseData.responses == NULL && (rsp->tbsResponseData.responses = sk_OCSP_SINGLERESP_new_null()) == NULL) goto err; if ((single = OCSP_SINGLERESP_new()) == NULL) goto err; if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) goto err; if (nextupd && !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) goto err; OCSP_CERTID_free(single->certId); if ((single->certId = OCSP_CERTID_dup(cid)) == NULL) goto err; cs = single->certStatus; switch (cs->type = status) { case V_OCSP_CERTSTATUS_REVOKED: if (!revtime) { OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS, OCSP_R_NO_REVOKED_TIME); goto err; } if ((cs->value.revoked = ri = OCSP_REVOKEDINFO_new()) == NULL) goto err; if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) goto err; if (reason != OCSP_REVOKED_STATUS_NOSTATUS) { if ((ri->revocationReason = ASN1_ENUMERATED_new()) == NULL) goto err; if (!(ASN1_ENUMERATED_set(ri->revocationReason, reason))) goto err; } break; case V_OCSP_CERTSTATUS_GOOD: if ((cs->value.good = ASN1_NULL_new()) == NULL) goto err; break; case V_OCSP_CERTSTATUS_UNKNOWN: if ((cs->value.unknown = ASN1_NULL_new()) == NULL) goto err; break; default: goto err; } if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData.responses, single))) goto err; return single; err: OCSP_SINGLERESP_free(single); return NULL; } /* Add a certificate to an OCSP request */ int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) { if (resp->certs == NULL && (resp->certs = sk_X509_new_null()) == NULL) return 0; if (!sk_X509_push(resp->certs, cert)) return 0; X509_up_ref(cert); return 1; } int OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags) { int i; OCSP_RESPID *rid; if (!X509_check_private_key(signer, key)) { OCSPerr(OCSP_F_OCSP_BASIC_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); goto err; } if (!(flags & OCSP_NOCERTS)) { if (!OCSP_basic_add1_cert(brsp, signer)) goto err; for (i = 0; i < sk_X509_num(certs); i++) { X509 *tmpcert = sk_X509_value(certs, i); if (!OCSP_basic_add1_cert(brsp, tmpcert)) goto err; } } rid = &brsp->tbsResponseData.responderId; if (flags & OCSP_RESPID_KEY) { if (!OCSP_RESPID_set_by_key(rid, signer)) goto err; } else if (!OCSP_RESPID_set_by_name(rid, signer)) { goto err; } if (!(flags & OCSP_NOTIME) && !X509_gmtime_adj(brsp->tbsResponseData.producedAt, 0)) goto err; /* * Right now, I think that not doing double hashing is the right thing. * -- Richard Levitte */ if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err; return 1; err: return 0; } int OCSP_RESPID_set_by_name(OCSP_RESPID *respid, X509 *cert) { if (!X509_NAME_set(&respid->value.byName, X509_get_subject_name(cert))) return 0; respid->type = V_OCSP_RESPID_NAME; return 1; } int OCSP_RESPID_set_by_key(OCSP_RESPID *respid, X509 *cert) { ASN1_OCTET_STRING *byKey = NULL; unsigned char md[SHA_DIGEST_LENGTH]; /* RFC2560 requires SHA1 */ if (!X509_pubkey_digest(cert, EVP_sha1(), md, NULL)) return 0; byKey = ASN1_OCTET_STRING_new(); if (byKey == NULL) return 0; if (!(ASN1_OCTET_STRING_set(byKey, md, SHA_DIGEST_LENGTH))) { ASN1_OCTET_STRING_free(byKey); return 0; } respid->type = V_OCSP_RESPID_KEY; respid->value.byKey = byKey; return 1; } int OCSP_RESPID_match(OCSP_RESPID *respid, X509 *cert) { if (respid->type == V_OCSP_RESPID_KEY) { unsigned char md[SHA_DIGEST_LENGTH]; if (respid->value.byKey == NULL) return 0; /* RFC2560 requires SHA1 */ if (!X509_pubkey_digest(cert, EVP_sha1(), md, NULL)) return 0; return (ASN1_STRING_length(respid->value.byKey) == SHA_DIGEST_LENGTH) && (memcmp(ASN1_STRING_get0_data(respid->value.byKey), md, SHA_DIGEST_LENGTH) == 0); } else if (respid->type == V_OCSP_RESPID_NAME) { if (respid->value.byName == NULL) return 0; return X509_NAME_cmp(respid->value.byName, X509_get_subject_name(cert)) == 0; } return 0; }