crypto/ocsp/ocsp_lib.c - third_party/openssl - Git at Google

 /* ocsp_lib.c */
 /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
  * project. */

 /* History:
    This file was transfered to Richard Levitte from CertCo by Kathy
    Weinhold in mid-spring 2000 to be included in OpenSSL or released
    as a patch kit. */

 /* ====================================================================
  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * 3. All advertising materials mentioning features or use of this
  *    software must display the following acknowledgment:
  *    "This product includes software developed by the OpenSSL Project
  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  *
  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  *    endorse or promote products derived from this software without
  *    prior written permission. For written permission, please contact
  *    openssl-core@openssl.org.
  *
  * 5. Products derived from this software may not be called "OpenSSL"
  *    nor may "OpenSSL" appear in their names without prior written
  *    permission of the OpenSSL Project.
  *
  * 6. Redistributions of any form whatsoever must retain the following
  *    acknowledgment:
  *    "This product includes software developed by the OpenSSL Project
  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  *
  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  * ====================================================================
  *
  * This product includes cryptographic software written by Eric Young
  * (eay@cryptsoft.com).  This product includes software written by Tim
  * Hudson (tjh@cryptsoft.com).
  *
  */

 #include <stdio.h>
 #include <cryptlib.h>
 #include <openssl/objects.h>
 #include <openssl/x509.h>
 #include <openssl/pem.h>
 #include <openssl/x509v3.h>
 #include <openssl/safestack.h>
 #include <openssl/ocsp.h>

 static STACK_OF(X509_EXTENSION) *ext_dup(STACK_OF(X509_EXTENSION) *fr)
 	{
 	int i;
 	STACK_OF(X509_EXTENSION) *to = NULL;

 	if (!(to = sk_X509_EXTENSION_dup(fr)))
 	        goto err;
 	for (i = 0; i < sk_X509_EXTENSION_num(fr); i++)
 		{
 	        sk_X509_EXTENSION_set(to, i,
 	              X509_EXTENSION_dup(sk_X509_EXTENSION_value(fr, i)));
 		if (! sk_X509_EXTENSION_value(to, i))
 		        goto err;
 		}
 	return to;
 err:
 	if (to) sk_X509_EXTENSION_pop_free(to, X509_EXTENSION_free);
 	return NULL;
 	}

 OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
 			      X509_NAME *issuerName,
 			      ASN1_BIT_STRING* issuerKey,
 			      ASN1_INTEGER *serialNumber)
         {
 	int nid;
         unsigned int i;
 	X509_ALGOR *alg;
 	OCSP_CERTID *cid = NULL;
 	unsigned char md[EVP_MAX_MD_SIZE];
 	EVP_MD_CTX ctx;

 	if (!(cid = OCSP_CERTID_new())) goto err;

 	alg = cid->hashAlgorithm;
 	if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
 	if ((nid = EVP_MD_type(dgst)) == NID_undef)
 	        {
 		OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
 		goto err;
 		}
 	if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
 	if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
 	alg->parameter->type=V_ASN1_NULL;

 	if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
 	if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;

 	/* Calculate the issuerKey hash, excluding tag and length */
 	EVP_DigestInit(&ctx,dgst);
 	EVP_DigestUpdate(&ctx,issuerKey->data, issuerKey->length);
 	EVP_DigestFinal(&ctx,md,&i);

 	if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;

 	if (cid->serialNumber != NULL) ASN1_INTEGER_free(cid->serialNumber);
 	if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
 	return cid;
 digerr:
 	OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
 err:
 	if (cid) OCSP_CERTID_free(cid);
 	return NULL;
 	}

 OCSP_CERTSTATUS *OCSP_cert_status_new(int status, int reason, char *tim)
         {
 	OCSP_REVOKEDINFO *ri;
 	OCSP_CERTSTATUS *cs = NULL;

 	if (!(cs = OCSP_CERTSTATUS_new())) goto err;
 	if ((cs->type = status) == V_OCSP_CERTSTATUS_REVOKED)
 	        {
 		if (!time)
 		        {
 		        OCSPerr(OCSP_F_CERT_STATUS_NEW,OCSP_R_REVOKED_NO_TIME);
 			goto err;
 		        }
 		if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err;
 		if (!ASN1_GENERALIZEDTIME_set_string(ri->revocationTime,tim))
 			goto err;
 		if (reason != OCSP_REVOKED_STATUS_NOSTATUS)
 		        {
 			if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
 			        goto err;
 			if (!(ASN1_ENUMERATED_set(ri->revocationReason,
 						  reason)))
 			        goto err;
 			}
 		}
 	return cs;
 err:
 	if (cs) OCSP_CERTSTATUS_free(cs);
 	return NULL;
 	}

 OCSP_REQUEST *OCSP_request_new(X509_NAME* name,
 			       STACK_OF(X509_EXTENSION) *extensions)
         {
 	OCSP_REQUEST *req = NULL;

 	if ((req = OCSP_REQUEST_new()) == NULL) goto err;
 	if (name) /* optional */
 	        {
 		if (!(req->tbsRequest->requestorName=GENERAL_NAME_new()))
 		        goto err;
 		req->tbsRequest->requestorName->type = GEN_DIRNAME;
 		req->tbsRequest->requestorName->d.dirn = X509_NAME_dup(name);
 		}
 	if (!(req->tbsRequest->requestList = sk_OCSP_ONEREQ_new(NULL))) goto err;
 	if (extensions &&
 	    (!(req->tbsRequest->requestExtensions = ext_dup(extensions))))
 	        goto err;
 	return req;
 err:
 	if (req) OCSP_REQUEST_free(req);
 	return NULL;
 	}

 int OCSP_request_add(OCSP_REQUEST             *req,
 		     OCSP_CERTID              *cid,
 		     STACK_OF(X509_EXTENSION) *extensions)
         {
 	OCSP_ONEREQ *one = NULL;

 	if (!(one = OCSP_ONEREQ_new())) goto err;
 	if (one->reqCert) OCSP_CERTID_free(one->reqCert);
 	if (!(one->reqCert = OCSP_CERTID_dup(cid))) goto err;
 	if (extensions&&(!(one->singleRequestExtensions=ext_dup(extensions))))
 	        goto err;
 	if (!sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one)) goto err;
 	return 1;
 err:
 	if (one) OCSP_ONEREQ_free(one);
 	return 0;
         }

 int OCSP_request_sign(OCSP_REQUEST   *req,
 		      EVP_PKEY       *key,
 		      const EVP_MD   *dgst,
 		      STACK_OF(X509) *certs)
         {
 	int i;
 	OCSP_SIGNATURE *sig;

 	if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) goto err;
 	if (!OCSP_REQUEST_sign(req, key, dgst)) goto err;
 	if (certs)
 	        {
 	        if (!(sig->certs = sk_X509_dup(certs))) goto err;
 	        for (i = 0; i < sk_X509_num(sig->certs); i++)
 	                {
 			sk_X509_set(sig->certs, i,
 		               X509_dup(sk_X509_value(certs,i)));
 		        if (! sk_X509_value(sig->certs, i))
 			      goto err;
 		        }
 		}
 	return 1;
 err:
 	if (req->optionalSignature)
 	        {
 		OCSP_SIGNATURE_free(req->optionalSignature);
 		req->optionalSignature = NULL;
 		}
 	return 0;
 	}

 OCSP_BASICRESP *OCSP_basic_response_new(int type,
 					X509* cert,
 					STACK_OF(X509_EXTENSION) *extensions)
         {
 	time_t t;
 	OCSP_RESPID *rid;
         ASN1_BIT_STRING *bs;
 	OCSP_BASICRESP *rsp = NULL;
 	unsigned char md[SHA_DIGEST_LENGTH];

 	if (!(rsp = OCSP_BASICRESP_new())) goto err;
 	rid = rsp->tbsResponseData->responderId;
 	switch (rid->type = type)
 	        {
 		case V_OCSP_RESPID_NAME:
 		        /* cert is user cert */
 		        if (!(rid->value.byName =
 			          X509_NAME_dup(X509_get_subject_name(cert))))
 				goto err;
 		        break;
 		case V_OCSP_RESPID_KEY:
 		        /* cert is issuer cert */
 			/* SHA-1 hash of responder's public key
                          * (excluding the tag and length fields)
 			 */
 		        bs = cert->cert_info->key->public_key;
 		        SHA1(ASN1_STRING_data((ASN1_STRING*)bs),
 			     ASN1_STRING_length((ASN1_STRING*)bs), md);
 			if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
 				goto err;
 			if (!(ASN1_OCTET_STRING_set(rid->value.byKey,
 						    md, sizeof md)))
 				goto err;
 		        break;
 		default:
 		        OCSPerr(OCSP_F_BASIC_RESPONSE_NEW,OCSP_R_BAD_TAG);
 			goto err;
 		        break;
 		}
 	time(&t);
 	if (!(ASN1_GENERALIZEDTIME_set(rsp->tbsResponseData->producedAt, t)))
 		goto err;
 	if (!(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new(NULL))) goto err;
 	if (extensions && (!(rsp->tbsResponseData->responseExtensions =
 			                      ext_dup(extensions))))
 		goto err;
 	return rsp;
 err:
 	if (rsp) OCSP_BASICRESP_free(rsp);
 	return NULL;
 	}

 int OCSP_basic_response_add(OCSP_BASICRESP           *rsp,
 			    OCSP_CERTID              *cid,
 			    OCSP_CERTSTATUS          *cst,
 			    char                     *this,
 			    char                     *next,
 			    STACK_OF(X509_EXTENSION) *extensions)
         {
 	OCSP_SINGLERESP *single = NULL;

 	if (!(single = OCSP_SINGLERESP_new())) goto err;
 	if (single->certId) OCSP_CERTID_free(single->certId);
 	if (!(single->certId = OCSP_CERTID_dup(cid))) goto err;
 	if (single->certStatus) OCSP_CERTSTATUS_free(single->certStatus);
 	if (!(single->certStatus = OCSP_CERTSTATUS_dup(cst))) goto err;
 	if (!ASN1_GENERALIZEDTIME_set_string(single->thisUpdate,this))goto err;
 	if (next)
                 {
 		if (!(single->nextUpdate = ASN1_GENERALIZEDTIME_new()))
 		        goto err;
 		if (!ASN1_GENERALIZEDTIME_set_string(single->nextUpdate,next))
 	                goto err;
 		}
 	if (extensions && (!(single->singleExtensions = ext_dup(extensions))))
 	        goto err;
 	if (!sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses,single)) goto err;
 	return 1;
 err:
 	if (single) OCSP_SINGLERESP_free(single);
 	return 0;
 	}

 int OCSP_basic_response_sign(OCSP_BASICRESP *brsp,
 			     EVP_PKEY       *key,
 			     const EVP_MD   *dgst,
 			     STACK_OF(X509) *certs)
         {
 	int i;

 	/* 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;
 	if (certs)
 	        {
 	        if (!(brsp->certs = sk_X509_dup(certs))) goto err;
 	        for (i = 0; i < sk_X509_num(brsp->certs); i++)
 	                {
 			sk_X509_set(brsp->certs, i,
 		               X509_dup(sk_X509_value(certs, i)));
 		        if (! sk_X509_value(brsp->certs, i))
 				goto err;
 		        }
 		}
 	return 1;
 err:
 	return 0;
 	}

 OCSP_RESPONSE *OCSP_response_new(int status,
 				 int nid,
 				 int (*i2d)(),
 				 char *data)
         {
         OCSP_RESPONSE *rsp = NULL;

 	if (!(rsp = OCSP_RESPONSE_new())) goto err;
 	if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err;
 	if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err;
 	if (rsp->responseBytes->responseType) ASN1_OBJECT_free(rsp->responseBytes->responseType);
 	if (!(rsp->responseBytes->responseType = OBJ_nid2obj(nid))) goto err;
 	if (!ASN1_STRING_encode((ASN1_STRING*)rsp->responseBytes->response,
 				i2d, data, NULL)) goto err;
 	return rsp;
 err:
 	if (rsp) OCSP_RESPONSE_free(rsp);
 	return NULL;
 	}

 /* XXX assumes certs in signature are sorted root to leaf XXX */
 int OCSP_request_verify(OCSP_REQUEST *req, EVP_PKEY *pkey)
         {
 	STACK_OF(X509) *sk;

 	if (!req->optionalSignature) return 0;
 	if (pkey == NULL)
 	        {
 	        if (!(sk = req->optionalSignature->certs)) return 0;
 		if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
 		        {
 		        OCSPerr(OCSP_F_REQUEST_VERIFY,OCSP_R_NO_PUBLIC_KEY);
 			return 0;
 		        }
 		}
 	return OCSP_REQUEST_verify(req, pkey);
         }

 int OCSP_response_verify(OCSP_RESPONSE *rsp, EVP_PKEY *pkey)
         {
 	int i, r;
 	unsigned char *p;
 	OCSP_RESPBYTES *rb;
 	OCSP_BASICRESP *br = NULL;

 	if ((rb = rsp->responseBytes) == NULL)
 	        {
 		OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_NO_RESPONSE_DATA);
                 return 0;
 		}
 	if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
 	        {
 		OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_BAD_TAG);
                 return 0;
 		}
 	p = ASN1_STRING_data(rb->response);
 	i = ASN1_STRING_length(rb->response);
 	if (!(d2i_OCSP_BASICRESP(&br, &p, i))) return 0;
 	r = OCSP_basic_response_verify(br, pkey);
 	OCSP_BASICRESP_free(br);
 	return r;
         }

 int OCSP_basic_response_verify(OCSP_BASICRESP *rsp, EVP_PKEY *pkey)
         {
 	STACK_OF(X509) *sk;
 	int ret;

 	if (!rsp->signature)
 	        {
 		OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_SIGNATURE);
                 return 0;
 		}
 	if (pkey == NULL)
 	        {
 	        if (!(sk = rsp->certs))
 		        {
 		        OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_CERTIFICATE);
 			return 0;
 			}
 		if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
 		        {
 		        OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_PUBLIC_KEY);
 			return 0;
 		        }
 		}
 	ret = OCSP_BASICRESP_verify(rsp, pkey, 0);
 	return ret;
         }
	/* ocsp_lib.c */
	/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
	* project. */

	/* History:
	This file was transfered to Richard Levitte from CertCo by Kathy
	Weinhold in mid-spring 2000 to be included in OpenSSL or released
	as a patch kit. */

	/* ====================================================================
	* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	*
	* 3. All advertising materials mentioning features or use of this
	* software must display the following acknowledgment:
	* "This product includes software developed by the OpenSSL Project
	* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
	*
	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	* endorse or promote products derived from this software without
	* prior written permission. For written permission, please contact
	* openssl-core@openssl.org.
	*
	* 5. Products derived from this software may not be called "OpenSSL"
	* nor may "OpenSSL" appear in their names without prior written
	* permission of the OpenSSL Project.
	*
	* 6. Redistributions of any form whatsoever must retain the following
	* acknowledgment:
	* "This product includes software developed by the OpenSSL Project
	* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
	*
	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	* OF THE POSSIBILITY OF SUCH DAMAGE.
	* ====================================================================
	*
	* This product includes cryptographic software written by Eric Young
	* (eay@cryptsoft.com). This product includes software written by Tim
	* Hudson (tjh@cryptsoft.com).
	*
	*/

	#include <stdio.h>
	#include <cryptlib.h>
	#include <openssl/objects.h>
	#include <openssl/x509.h>
	#include <openssl/pem.h>
	#include <openssl/x509v3.h>
	#include <openssl/safestack.h>
	#include <openssl/ocsp.h>

	static STACK_OF(X509_EXTENSION) ext_dup(STACK_OF(X509_EXTENSION) fr)
	{
	int i;
	STACK_OF(X509_EXTENSION) *to = NULL;

	if (!(to = sk_X509_EXTENSION_dup(fr)))
	goto err;
	for (i = 0; i < sk_X509_EXTENSION_num(fr); i++)
	{
	sk_X509_EXTENSION_set(to, i,
	X509_EXTENSION_dup(sk_X509_EXTENSION_value(fr, i)));
	if (! sk_X509_EXTENSION_value(to, i))
	goto err;
	}
	return to;
	err:
	if (to) sk_X509_EXTENSION_pop_free(to, X509_EXTENSION_free);
	return NULL;
	}

	OCSP_CERTID OCSP_cert_id_new(const EVP_MD dgst,
	X509_NAME *issuerName,
	ASN1_BIT_STRING* issuerKey,
	ASN1_INTEGER *serialNumber)
	{
	int nid;
	unsigned int i;
	X509_ALGOR *alg;
	OCSP_CERTID *cid = NULL;
	unsigned char md[EVP_MAX_MD_SIZE];
	EVP_MD_CTX ctx;

	if (!(cid = OCSP_CERTID_new())) goto err;

	alg = cid->hashAlgorithm;
	if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
	if ((nid = EVP_MD_type(dgst)) == NID_undef)
	{
	OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
	goto err;
	}
	if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
	if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
	alg->parameter->type=V_ASN1_NULL;

	if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
	if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;

	/* Calculate the issuerKey hash, excluding tag and length */
	EVP_DigestInit(&ctx,dgst);
	EVP_DigestUpdate(&ctx,issuerKey->data, issuerKey->length);
	EVP_DigestFinal(&ctx,md,&i);

	if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;

	if (cid->serialNumber != NULL) ASN1_INTEGER_free(cid->serialNumber);
	if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
	return cid;
	digerr:
	OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
	err:
	if (cid) OCSP_CERTID_free(cid);
	return NULL;
	}

	OCSP_CERTSTATUS OCSP_cert_status_new(int status, int reason, char tim)
	{
	OCSP_REVOKEDINFO *ri;
	OCSP_CERTSTATUS *cs = NULL;

	if (!(cs = OCSP_CERTSTATUS_new())) goto err;
	if ((cs->type = status) == V_OCSP_CERTSTATUS_REVOKED)
	{
	if (!time)
	{
	OCSPerr(OCSP_F_CERT_STATUS_NEW,OCSP_R_REVOKED_NO_TIME);
	goto err;
	}
	if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err;
	if (!ASN1_GENERALIZEDTIME_set_string(ri->revocationTime,tim))
	goto err;
	if (reason != OCSP_REVOKED_STATUS_NOSTATUS)
	{
	if (!(ri->revocationReason = ASN1_ENUMERATED_new()))
	goto err;
	if (!(ASN1_ENUMERATED_set(ri->revocationReason,
	reason)))
	goto err;
	}
	}
	return cs;
	err:
	if (cs) OCSP_CERTSTATUS_free(cs);
	return NULL;
	}

	OCSP_REQUEST OCSP_request_new(X509_NAME name,
	STACK_OF(X509_EXTENSION) *extensions)
	{
	OCSP_REQUEST *req = NULL;

	if ((req = OCSP_REQUEST_new()) == NULL) goto err;
	if (name) /* optional */
	{
	if (!(req->tbsRequest->requestorName=GENERAL_NAME_new()))
	goto err;
	req->tbsRequest->requestorName->type = GEN_DIRNAME;
	req->tbsRequest->requestorName->d.dirn = X509_NAME_dup(name);
	}
	if (!(req->tbsRequest->requestList = sk_OCSP_ONEREQ_new(NULL))) goto err;
	if (extensions &&
	(!(req->tbsRequest->requestExtensions = ext_dup(extensions))))
	goto err;
	return req;
	err:
	if (req) OCSP_REQUEST_free(req);
	return NULL;
	}

	int OCSP_request_add(OCSP_REQUEST *req,
	OCSP_CERTID *cid,
	STACK_OF(X509_EXTENSION) *extensions)
	{
	OCSP_ONEREQ *one = NULL;

	if (!(one = OCSP_ONEREQ_new())) goto err;
	if (one->reqCert) OCSP_CERTID_free(one->reqCert);
	if (!(one->reqCert = OCSP_CERTID_dup(cid))) goto err;
	if (extensions&&(!(one->singleRequestExtensions=ext_dup(extensions))))
	goto err;
	if (!sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one)) goto err;
	return 1;
	err:
	if (one) OCSP_ONEREQ_free(one);
	return 0;
	}

	int OCSP_request_sign(OCSP_REQUEST *req,
	EVP_PKEY *key,
	const EVP_MD *dgst,
	STACK_OF(X509) *certs)
	{
	int i;
	OCSP_SIGNATURE *sig;

	if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) goto err;
	if (!OCSP_REQUEST_sign(req, key, dgst)) goto err;
	if (certs)
	{
	if (!(sig->certs = sk_X509_dup(certs))) goto err;
	for (i = 0; i < sk_X509_num(sig->certs); i++)
	{
	sk_X509_set(sig->certs, i,
	X509_dup(sk_X509_value(certs,i)));
	if (! sk_X509_value(sig->certs, i))
	goto err;
	}
	}
	return 1;
	err:
	if (req->optionalSignature)
	{
	OCSP_SIGNATURE_free(req->optionalSignature);
	req->optionalSignature = NULL;
	}
	return 0;
	}

	OCSP_BASICRESP *OCSP_basic_response_new(int type,
	X509* cert,
	STACK_OF(X509_EXTENSION) *extensions)
	{
	time_t t;
	OCSP_RESPID *rid;
	ASN1_BIT_STRING *bs;
	OCSP_BASICRESP *rsp = NULL;
	unsigned char md[SHA_DIGEST_LENGTH];

	if (!(rsp = OCSP_BASICRESP_new())) goto err;
	rid = rsp->tbsResponseData->responderId;
	switch (rid->type = type)
	{
	case V_OCSP_RESPID_NAME:
	/* cert is user cert */
	if (!(rid->value.byName =
	X509_NAME_dup(X509_get_subject_name(cert))))
	goto err;
	break;
	case V_OCSP_RESPID_KEY:
	/* cert is issuer cert */
	/* SHA-1 hash of responder's public key
	* (excluding the tag and length fields)
	*/
	bs = cert->cert_info->key->public_key;
	SHA1(ASN1_STRING_data((ASN1_STRING*)bs),
	ASN1_STRING_length((ASN1_STRING*)bs), md);
	if (!(rid->value.byKey = ASN1_OCTET_STRING_new()))
	goto err;
	if (!(ASN1_OCTET_STRING_set(rid->value.byKey,
	md, sizeof md)))
	goto err;
	break;
	default:
	OCSPerr(OCSP_F_BASIC_RESPONSE_NEW,OCSP_R_BAD_TAG);
	goto err;
	break;
	}
	time(&t);
	if (!(ASN1_GENERALIZEDTIME_set(rsp->tbsResponseData->producedAt, t)))
	goto err;
	if (!(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new(NULL))) goto err;
	if (extensions && (!(rsp->tbsResponseData->responseExtensions =
	ext_dup(extensions))))
	goto err;
	return rsp;
	err:
	if (rsp) OCSP_BASICRESP_free(rsp);
	return NULL;
	}

	int OCSP_basic_response_add(OCSP_BASICRESP *rsp,
	OCSP_CERTID *cid,
	OCSP_CERTSTATUS *cst,
	char *this,
	char *next,
	STACK_OF(X509_EXTENSION) *extensions)
	{
	OCSP_SINGLERESP *single = NULL;

	if (!(single = OCSP_SINGLERESP_new())) goto err;
	if (single->certId) OCSP_CERTID_free(single->certId);
	if (!(single->certId = OCSP_CERTID_dup(cid))) goto err;
	if (single->certStatus) OCSP_CERTSTATUS_free(single->certStatus);
	if (!(single->certStatus = OCSP_CERTSTATUS_dup(cst))) goto err;
	if (!ASN1_GENERALIZEDTIME_set_string(single->thisUpdate,this))goto err;
	if (next)
	{
	if (!(single->nextUpdate = ASN1_GENERALIZEDTIME_new()))
	goto err;
	if (!ASN1_GENERALIZEDTIME_set_string(single->nextUpdate,next))
	goto err;
	}
	if (extensions && (!(single->singleExtensions = ext_dup(extensions))))
	goto err;
	if (!sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses,single)) goto err;
	return 1;
	err:
	if (single) OCSP_SINGLERESP_free(single);
	return 0;
	}

	int OCSP_basic_response_sign(OCSP_BASICRESP *brsp,
	EVP_PKEY *key,
	const EVP_MD *dgst,
	STACK_OF(X509) *certs)
	{
	int i;

	/* 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;
	if (certs)
	{
	if (!(brsp->certs = sk_X509_dup(certs))) goto err;
	for (i = 0; i < sk_X509_num(brsp->certs); i++)
	{
	sk_X509_set(brsp->certs, i,
	X509_dup(sk_X509_value(certs, i)));
	if (! sk_X509_value(brsp->certs, i))
	goto err;
	}
	}
	return 1;
	err:
	return 0;
	}

	OCSP_RESPONSE *OCSP_response_new(int status,
	int nid,
	int (*i2d)(),
	char *data)
	{
	OCSP_RESPONSE *rsp = NULL;

	if (!(rsp = OCSP_RESPONSE_new())) goto err;
	if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err;
	if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err;
	if (rsp->responseBytes->responseType) ASN1_OBJECT_free(rsp->responseBytes->responseType);
	if (!(rsp->responseBytes->responseType = OBJ_nid2obj(nid))) goto err;
	if (!ASN1_STRING_encode((ASN1_STRING*)rsp->responseBytes->response,
	i2d, data, NULL)) goto err;
	return rsp;
	err:
	if (rsp) OCSP_RESPONSE_free(rsp);
	return NULL;
	}

	/* XXX assumes certs in signature are sorted root to leaf XXX */
	int OCSP_request_verify(OCSP_REQUEST req, EVP_PKEY pkey)
	{
	STACK_OF(X509) *sk;

	if (!req->optionalSignature) return 0;
	if (pkey == NULL)
	{
	if (!(sk = req->optionalSignature->certs)) return 0;
	if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
	{
	OCSPerr(OCSP_F_REQUEST_VERIFY,OCSP_R_NO_PUBLIC_KEY);
	return 0;
	}
	}
	return OCSP_REQUEST_verify(req, pkey);
	}

	int OCSP_response_verify(OCSP_RESPONSE rsp, EVP_PKEY pkey)
	{
	int i, r;
	unsigned char *p;
	OCSP_RESPBYTES *rb;
	OCSP_BASICRESP *br = NULL;

	if ((rb = rsp->responseBytes) == NULL)
	{
	OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_NO_RESPONSE_DATA);
	return 0;
	}
	if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
	{
	OCSPerr(OCSP_F_RESPONSE_VERIFY,OCSP_R_BAD_TAG);
	return 0;
	}
	p = ASN1_STRING_data(rb->response);
	i = ASN1_STRING_length(rb->response);
	if (!(d2i_OCSP_BASICRESP(&br, &p, i))) return 0;
	r = OCSP_basic_response_verify(br, pkey);
	OCSP_BASICRESP_free(br);
	return r;
	}

	int OCSP_basic_response_verify(OCSP_BASICRESP rsp, EVP_PKEY pkey)
	{
	STACK_OF(X509) *sk;
	int ret;

	if (!rsp->signature)
	{
	OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_SIGNATURE);
	return 0;
	}
	if (pkey == NULL)
	{
	if (!(sk = rsp->certs))
	{
	OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_CERTIFICATE);
	return 0;
	}
	if (!(pkey=X509_get_pubkey(sk_X509_value(sk, sk_X509_num(sk)-1))))
	{
	OCSPerr(OCSP_F_BASIC_RESPONSE_VERIFY,OCSP_R_NO_PUBLIC_KEY);
	return 0;
	}
	}
	ret = OCSP_BASICRESP_verify(rsp, pkey, 0);
	return ret;
	}