0b33bc65cd
and subject to addition, modifcation or deletion. Add two OCSP nonce utility functions. Fix typo in status code name.
368 lines
11 KiB
C
368 lines
11 KiB
C
/* ocsp_lib.c */
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/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
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* project. */
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/* History:
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This file was transfered to Richard Levitte from CertCo by Kathy
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Weinhold in mid-spring 2000 to be included in OpenSSL or released
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as a patch kit. */
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/* ====================================================================
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* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <cryptlib.h>
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#include <openssl/objects.h>
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#include <openssl/rand.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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#include <openssl/x509v3.h>
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#include <openssl/ocsp.h>
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/* Convert a certificate and its issuer to an OCSP_CERTID */
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OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
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{
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X509_NAME *iname;
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ASN1_INTEGER *serial;
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ASN1_BIT_STRING *ikey;
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#ifndef NO_SHA1
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if(!dgst) dgst = EVP_sha1();
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#endif
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iname = X509_get_issuer_name(subject);
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serial = X509_get_serialNumber(subject);
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ikey = issuer->cert_info->key->public_key;
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return OCSP_cert_id_new(dgst, iname, ikey, serial);
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}
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OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
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X509_NAME *issuerName,
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ASN1_BIT_STRING* issuerKey,
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ASN1_INTEGER *serialNumber)
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{
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int nid;
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unsigned int i;
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X509_ALGOR *alg;
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OCSP_CERTID *cid = NULL;
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unsigned char md[EVP_MAX_MD_SIZE];
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EVP_MD_CTX ctx;
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if (!(cid = OCSP_CERTID_new())) goto err;
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alg = cid->hashAlgorithm;
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if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
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if ((nid = EVP_MD_type(dgst)) == NID_undef)
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{
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OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
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goto err;
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}
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if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
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if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
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alg->parameter->type=V_ASN1_NULL;
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if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
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if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
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/* Calculate the issuerKey hash, excluding tag and length */
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EVP_DigestInit(&ctx,dgst);
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EVP_DigestUpdate(&ctx,issuerKey->data, issuerKey->length);
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EVP_DigestFinal(&ctx,md,&i);
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if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
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if (cid->serialNumber != NULL) ASN1_INTEGER_free(cid->serialNumber);
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if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
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return cid;
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digerr:
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OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
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err:
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if (cid) OCSP_CERTID_free(cid);
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return NULL;
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}
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OCSP_CERTSTATUS *OCSP_cert_status_new(int status, int reason, char *tim)
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{
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OCSP_REVOKEDINFO *ri;
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OCSP_CERTSTATUS *cs = NULL;
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if (!(cs = OCSP_CERTSTATUS_new())) goto err;
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if ((cs->type = status) == V_OCSP_CERTSTATUS_REVOKED)
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{
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if (!time)
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{
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OCSPerr(OCSP_F_CERT_STATUS_NEW,OCSP_R_REVOKED_NO_TIME);
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goto err;
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}
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if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err;
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if (!ASN1_GENERALIZEDTIME_set_string(ri->revocationTime,tim))
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goto err;
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if (reason != OCSP_REVOKED_STATUS_NOSTATUS)
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{
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if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
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goto err;
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if (!(ASN1_ENUMERATED_set(ri->revocationReason,
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reason)))
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goto err;
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}
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}
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return cs;
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err:
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if (cs) OCSP_CERTSTATUS_free(cs);
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return NULL;
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}
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int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
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{
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int ret;
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ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
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if (ret) return ret;
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ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
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if (ret) return ret;
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ret = ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
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if (ret) return ret;
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return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
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}
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OCSP_BASICRESP *OCSP_basic_response_new(int type, X509* cert)
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{
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time_t t;
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OCSP_RESPID *rid;
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ASN1_BIT_STRING *bs;
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OCSP_BASICRESP *rsp = NULL;
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unsigned char md[SHA_DIGEST_LENGTH];
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if (!(rsp = OCSP_BASICRESP_new())) goto err;
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rid = rsp->tbsResponseData->responderId;
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switch (rid->type = type)
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{
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case V_OCSP_RESPID_NAME:
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/* cert is user cert */
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if (!(rid->value.byName =
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X509_NAME_dup(X509_get_subject_name(cert))))
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goto err;
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break;
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case V_OCSP_RESPID_KEY:
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/* cert is issuer cert */
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/* SHA-1 hash of responder's public key
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* (excluding the tag and length fields)
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*/
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bs = cert->cert_info->key->public_key;
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SHA1(ASN1_STRING_data((ASN1_STRING*)bs),
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ASN1_STRING_length((ASN1_STRING*)bs), md);
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if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
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goto err;
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if (!(ASN1_OCTET_STRING_set(rid->value.byKey,
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md, sizeof md)))
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goto err;
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break;
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default:
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OCSPerr(OCSP_F_BASIC_RESPONSE_NEW,OCSP_R_BAD_TAG);
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goto err;
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break;
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}
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time(&t);
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if (!(ASN1_GENERALIZEDTIME_set(rsp->tbsResponseData->producedAt, t)))
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goto err;
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if (!(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new(NULL))) goto err;
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return rsp;
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err:
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if (rsp) OCSP_BASICRESP_free(rsp);
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return NULL;
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}
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int OCSP_basic_response_add(OCSP_BASICRESP *rsp,
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OCSP_CERTID *cid,
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OCSP_CERTSTATUS *cst,
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char *this,
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char *next)
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{
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OCSP_SINGLERESP *single = NULL;
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if (!(single = OCSP_SINGLERESP_new())) goto err;
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if (single->certId) OCSP_CERTID_free(single->certId);
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if (!(single->certId = OCSP_CERTID_dup(cid))) goto err;
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if (single->certStatus) OCSP_CERTSTATUS_free(single->certStatus);
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if (!(single->certStatus = OCSP_CERTSTATUS_dup(cst))) goto err;
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if (!ASN1_GENERALIZEDTIME_set_string(single->thisUpdate,this))goto err;
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if (next)
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{
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if (!(single->nextUpdate = ASN1_GENERALIZEDTIME_new()))
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goto err;
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if (!ASN1_GENERALIZEDTIME_set_string(single->nextUpdate,next))
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goto err;
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}
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if (!sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses,single)) goto err;
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return 1;
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err:
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if (single) OCSP_SINGLERESP_free(single);
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return 0;
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}
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int OCSP_basic_response_sign(OCSP_BASICRESP *brsp,
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EVP_PKEY *key,
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const EVP_MD *dgst,
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STACK_OF(X509) *certs)
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{
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int i;
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/* Right now, I think that not doing double hashing is the right
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thing. -- Richard Levitte */
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if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err;
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if (certs)
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{
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if (!(brsp->certs = sk_X509_dup(certs))) goto err;
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for (i = 0; i < sk_X509_num(brsp->certs); i++)
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{
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sk_X509_set(brsp->certs, i,
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X509_dup(sk_X509_value(certs, i)));
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if (! sk_X509_value(brsp->certs, i))
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goto err;
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}
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}
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return 1;
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err:
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return 0;
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}
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OCSP_RESPONSE *OCSP_response_new(int status,
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int nid,
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int (*i2d)(),
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char *data)
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{
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OCSP_RESPONSE *rsp = NULL;
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if (!(rsp = OCSP_RESPONSE_new())) goto err;
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if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err;
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if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err;
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if (rsp->responseBytes->responseType) ASN1_OBJECT_free(rsp->responseBytes->responseType);
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if (!(rsp->responseBytes->responseType = OBJ_nid2obj(nid))) goto err;
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if (!ASN1_STRING_encode((ASN1_STRING*)rsp->responseBytes->response,
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i2d, data, NULL)) goto err;
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return rsp;
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err:
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if (rsp) OCSP_RESPONSE_free(rsp);
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return NULL;
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}
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/* XXX assumes certs in signature are sorted root to leaf XXX */
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int OCSP_request_verify(OCSP_REQUEST *req, EVP_PKEY *pkey)
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{
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STACK_OF(X509) *sk;
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if (!req->optionalSignature) return 0;
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if (pkey == NULL)
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{
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if (!(sk = req->optionalSignature->certs)) return 0;
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if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
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{
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OCSPerr(OCSP_F_REQUEST_VERIFY,OCSP_R_NO_PUBLIC_KEY);
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return 0;
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}
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}
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return OCSP_REQUEST_verify(req, pkey);
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}
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int OCSP_response_verify(OCSP_RESPONSE *rsp, EVP_PKEY *pkey)
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{
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int i, r;
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unsigned char *p;
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OCSP_RESPBYTES *rb;
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OCSP_BASICRESP *br = NULL;
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if ((rb = rsp->responseBytes) == NULL)
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{
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OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_NO_RESPONSE_DATA);
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return 0;
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}
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if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
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{
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OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_BAD_TAG);
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return 0;
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}
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p = ASN1_STRING_data(rb->response);
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i = ASN1_STRING_length(rb->response);
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if (!(d2i_OCSP_BASICRESP(&br, &p, i))) return 0;
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r = OCSP_basic_response_verify(br, pkey);
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OCSP_BASICRESP_free(br);
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return r;
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}
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int OCSP_basic_response_verify(OCSP_BASICRESP *rsp, EVP_PKEY *pkey)
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{
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STACK_OF(X509) *sk;
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int ret;
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if (!rsp->signature)
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{
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OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_SIGNATURE);
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return 0;
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}
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if (pkey == NULL)
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{
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if (!(sk = rsp->certs))
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{
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OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_CERTIFICATE);
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return 0;
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}
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if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
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{
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OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_PUBLIC_KEY);
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return 0;
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}
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}
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ret = OCSP_BASICRESP_verify(rsp, pkey, 0);
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return ret;
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}
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