| /* |
| * Copyright 2001-2018 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 <stdio.h> |
| #include "internal/cryptlib.h" |
| #include <openssl/objects.h> |
| #include <openssl/x509.h> |
| #include <openssl/pem.h> |
| #include <openssl/x509v3.h> |
| #include <openssl/ocsp.h> |
| #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; |
| } |
| |
| /* |
| * Sign an OCSP response using the parameters contained in the digest context, |
| * set the responderID to the subject name in the signer's certificate, and |
| * include one or more optional certificates in the response. |
| */ |
| |
| int OCSP_basic_sign_ctx(OCSP_BASICRESP *brsp, |
| X509 *signer, EVP_MD_CTX *ctx, |
| STACK_OF(X509) *certs, unsigned long flags) |
| { |
| int i; |
| OCSP_RESPID *rid; |
| EVP_PKEY *pkey; |
| |
| if (ctx == NULL || EVP_MD_CTX_pkey_ctx(ctx) == NULL) { |
| OCSPerr(OCSP_F_OCSP_BASIC_SIGN_CTX, OCSP_R_NO_SIGNER_KEY); |
| goto err; |
| } |
| |
| pkey = EVP_PKEY_CTX_get0_pkey(EVP_MD_CTX_pkey_ctx(ctx)); |
| if (pkey == NULL || !X509_check_private_key(signer, pkey)) { |
| OCSPerr(OCSP_F_OCSP_BASIC_SIGN_CTX, |
| 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_ctx(brsp, ctx, 0)) |
| goto err; |
| |
| return 1; |
| err: |
| return 0; |
| } |
| |
| int OCSP_basic_sign(OCSP_BASICRESP *brsp, |
| X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, |
| STACK_OF(X509) *certs, unsigned long flags) |
| { |
| EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
| EVP_PKEY_CTX *pkctx = NULL; |
| int i; |
| |
| if (!EVP_DigestSignInit(ctx, &pkctx, dgst, NULL, key)) { |
| EVP_MD_CTX_free(ctx); |
| return 0; |
| } |
| i = OCSP_basic_sign_ctx(brsp, signer, ctx, certs, flags); |
| EVP_MD_CTX_free(ctx); |
| return i; |
| } |
| |
| 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; |
| } |
