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* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this
* file except in compliance with the License. You may obtain
* a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
* or implied. See the License for the specific language governing
* rights and limitations under the License.
*
*
* The Original Code is Java RASP toolkit.
*
* The Initial Developer of the Original Code is Lenio. Portions
* created by Lenio are Copyright (C) 2007 Danish National IT and
* Telecom Agency (http://www.itst.dk). All Rights Reserved.
package dk.gov.oiosi.security.revocation.ocsp;
import dk.gov.oiosi.common.OutVariable;
import dk.gov.oiosi.common.cache.ICache;
import dk.gov.oiosi.configuration.CacheFactory;
import dk.gov.oiosi.configuration.ConfigurationException;
import dk.gov.oiosi.configuration.ConfigurationHandler;
import dk.gov.oiosi.security.CertificateHandlingException;
import dk.gov.oiosi.security.oces.CertificateUtil;
import dk.gov.oiosi.security.revocation.IRevocationLookup;
import dk.gov.oiosi.security.revocation.RevocationException;
import dk.gov.oiosi.security.revocation.RevocationResponse;
import dk.gov.oiosi.security.revocation.crl.CrlLookup;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ocsp.OCSPObjectIdentifiers;
import org.bouncycastle.asn1.ocsp.OCSPResponseStatus;
import org.bouncycastle.asn1.x509.*;
import org.bouncycastle.ocsp.*;
import javax.security.auth.x500.X500Principal;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigInteger;
import java.net.HttpURLConnection;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.NoSuchProviderException;
import java.security.cert.CertificateExpiredException;
import java.security.cert.CertificateNotYetValidException;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509Certificate;
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import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
/**
* Class for checking certificate revocation status against an OCSP server.
*/
/*
* TODO DLK: A lot of code in this class uses deprecated API. We need to review
* it, usually it is a bad sign.
*/
@SuppressWarnings("deprecation")
public class OcspLookup implements IRevocationLookup {
private HashMap<String, X509Certificate> rootCertificateMap;
// Set cache time to one hour
private final ICache<X500Principal, RevocationResponse> ocspCache = CacheFactory.getInstance().getOcspLookupCache();
private CertificateUtil certificateUtil;
* Default constructor. Attempts to load configuration from configuration file.
public OcspLookup() throws ConfigurationException {
try {
configuration = ConfigurationHandler.getInstance().getOcspConfig();
} catch (URISyntaxException e) {
throw new ConfigurationException(e.getMessage());
}
rootCertificateMap = new HashMap<String, X509Certificate>();
List<X509Certificate> list = configuration.getDefaultOcesRootCertificateCollectionFromStore();
for (X509Certificate rootCertificate : list) {
rootCertificateMap.put(rootCertificate.getIssuerDN().getName(), rootCertificate);
} catch (CertificateHandlingException e) {
}
/**
* Instantiates OcspLookup and loads the OCES default root certificate.
*
* @param configuration Configuration parameters
public OcspLookup(OcspConfig configuration) {
this.configuration = configuration;
rootCertificateMap = new HashMap<String, X509Certificate>();
try {
List<X509Certificate> list = this.configuration.getDefaultOcesRootCertificateCollectionFromStore();
this.rootCertificateMap.put(rootCertificate.getIssuerDN().getName(), rootCertificate);
}
} catch (CertificateHandlingException e) {
}
/**
* Creates a new OcspLookup class
*
* @param conf The configuration to use in this lookup
* @param defaultRootCertificate The root certificate
*/
public OcspLookup(OcspConfig conf, X509Certificate defaultRootCertificate) {
this.rootCertificateMap = new HashMap<String, X509Certificate>();
//this.rootcertList = new ArrayList<X509Certificate>();
this.rootCertificateMap.put(defaultRootCertificate.getIssuerDN().getName(), defaultRootCertificate);
this.certificateUtil = new CertificateUtil();
}
/**
* Creates a new OcspLookup class
*
* @param conf The configuration to use in this lookup
* @param defaultRootCertificateList The root certificate
*/
public OcspLookup(OcspConfig conf, ArrayList<X509Certificate> defaultRootCertificateList) {
rootCertificateMap = new HashMap<String, X509Certificate>();
for (X509Certificate rootCertificate : defaultRootCertificateList) {
rootCertificateMap.put(rootCertificate.getIssuerDN().getName(), rootCertificate);
}
this.certificateUtil = new CertificateUtil();
public OcspConfig getConfiguration() {
return this.configuration;
/**
* Checks a certificate status on a ocsp server.
*
* @param certificate The certificate to check
* @return The RevocationResponse object that contains the result
* @throws RevocationException
*/
public RevocationResponse checkCertificate(X509Certificate certificate) throws RevocationException {
OutVariable<RevocationResponse> value = new OutVariable<RevocationResponse>();
RevocationResponse revocationResponse;
if (this.ocspCache.tryGetValue(certificate.getSubjectX500Principal(), value)) {
// response already in cache.
// Check if the response still is valid
Date now = new Date();
revocationResponse = value.getVariable();
if (revocationResponse.getNextUpdate().before(now)) {
// the cached value is to old
// get new value
revocationResponse = this.checkCertificateAsync(certificate);
// the cached value is to old
// remove it from the cache
/*this.ocspCache.remove(certificate.getSubjectX500Principal());
// get new value
revocationResponse = this.checkCertificateOnline(certificate);
if(revocationResponse != null)
{
// put revocationResponse in cache
ocspCache.set(certificate.getSubjectX500Principal(), revocationResponse);
revocationResponse = this.checkCertificateAsync(certificate);
/*if(revocationResponse != null)
{
// put revocationResponse in cache
ocspCache.set(certificate.getSubjectX500Principal(), revocationResponse);
} */
}
return revocationResponse;
}
public RevocationResponse checkCertificateAsync(X509Certificate certificate) throws RevocationException {
// Aync not implemented - it is in c#
return this.revocationResponse(certificate);
}
public RevocationResponse revocationResponse(X509Certificate certificate) throws RevocationException {
// this method can be call recursive, so check the cache first
RevocationResponse revocationResponse = null;
OutVariable<RevocationResponse> value = new OutVariable<RevocationResponse>();
if (this.ocspCache.tryGetValue(certificate.getSubjectX500Principal(), value)) {
// response already in cache.
// Check if the response still is valid
Date now = new Date();
revocationResponse = value.getVariable();
if (revocationResponse.getNextUpdate().before(now)) {
// the cached value is to old
// get new value
revocationResponse = this.revocationResponseOnline(certificate);
// response is not in cache
revocationResponse = this.revocationResponseOnline(certificate);
}
return revocationResponse;
}
* Checks a certificate status on a ocsp server
*
* @param x509Certificate - The certificate to check.
* @return The RevocationResponse object that contains the result
*/
public RevocationResponse revocationResponseOnline(X509Certificate x509Certificate) throws RevocationException {
// The response was not in the cache - we must validate the certificate our self
if (x509Certificate == null) {
throw new RevocationException("Certificate is null");
}
X509Certificate issuerX509Certificate = findIssuerCertificate(x509Certificate);
if (issuerX509Certificate == null) {
throw new RevocationException("Certificate '" + x509Certificate.getSubjectX500Principal() + "' is not trusted, as issuer could not be identified");
// Is the the certificate to verify the root certificate itself?
if (x509Certificate.getIssuerDN().getName().equals(issuerX509Certificate.getSubjectX500Principal().getName())) {
throw new RevocationException("Certificate not trusted, as the certificate is self signed");
} else {
revocationResponse = revocationResponseOnline(x509Certificate, issuerX509Certificate);
if (revocationResponse != null) {
//if (revocationResponse.Exception == null){
// no exception recorded
if (revocationResponse.isValid()) {
// now we know the certificate is valid.
// if the issuer is a trusted root certificate, all is good
if (this.rootCertificateMap.containsKey(issuerX509Certificate.getIssuerDN().getName())) {
// the root certificate is trusted, so the RevocationResponse can be put on the cache
this.ocspCache.add(x509Certificate.getSubjectX500Principal(), revocationResponse);
// we do not yet know if the certificate is valid.
// the certificate migth be good, but if the issueing certificate is revoked,
// then the certificate should also be revoked.
// Validate the issuer certificate
// this is required, because certificate can have a chain that is longer then 2
// The only problem is, that we can not ocsp validate the intermediate certificate (the issuer certificate).
// according to DanID - that certificate can only be validated with CRL
// Note : The crl list will be/should be very short. Only containing the issuer certificate that has been revoked.
// A good guess is that there at all time will be most 10 issuer certificate, so the list of revoked issuer certificate is short.
List<String> issuerUrl = this.getAuthorityInformationAccessOcspUrl(issuerX509Certificate);
RevocationResponse issuerRevocationResponse;
if (issuerUrl.size() > 0) {
// hey, wow some url exist - lets use that
// don't thing this will ever happens anyway
issuerRevocationResponse = this.revocationResponse(issuerX509Certificate);
// we need to validate with crl instead
// It does not contain the Authority Info Access, containng the rl to where the certificate must be validated
// We must therefore gues, that the certificate is valid.
CrlLookup crlLookupClient = new CrlLookup();
issuerRevocationResponse = crlLookupClient.checkCertificate(issuerX509Certificate);
}
// now to handle the issuerRevocationResponse
if (issuerRevocationResponse != null) {
// the issuer certificate is validated, the validity of the issuer certificate
// is copied to the revocationResponse
revocationResponse.setIsValid(issuerRevocationResponse.isValid());
revocationResponse.setIsValid(false);
//revocationResponse.Exception = new CheckCertificateOcspUnexpectedException("The issueing certificate could not be validated.");
}
// update the cache
this.ocspCache.add(x509Certificate.getSubjectX500Principal(), revocationResponse);
}
// the certificate is Not valid
// no need to check the issuer certificate
this.ocspCache.add(x509Certificate.getSubjectX500Principal(), revocationResponse);
}
// some exception returned.
// do not add to cache
}
return revocationResponse;
}
/**
* @param x509Certificate The certificate to verify.
* @param issuerX509Certificate Issuer certificate of x509Certificate.
* @return RevocationResponse
* @throws RevocationException On error...
*/
private RevocationResponse revocationResponseOnline(X509Certificate x509Certificate, X509Certificate issuerX509Certificate) throws RevocationException {
if (x509Certificate == null) {
throw new RevocationException("Server certificate is null");
}
// create BouncyCastle certificates
//X509CertificateParser certParser = new X509CertificateParser();
//Org.BouncyCastle.X509.X509Certificate serverX509Certificate = certParser.ReadCertificate(serverX509Certificate2.RawData);
List<String> urlList = getAuthorityInformationAccessOcspUrl(x509Certificate);
if (urlList.size() == 0) {
throw new RevocationException("No OCSP url found in certificate: " + x509Certificate.getSubjectDN().getName());
// we always validate against the first defined url
String url = urlList.get(0);
revocationResponse = revocationResponseOnline(x509Certificate, issuerX509Certificate, url);
} catch (OCSPException e) {
throw new RevocationException(e);
}
return revocationResponse;
}
public RevocationResponse revocationResponseOnline(X509Certificate serverX509Certificate, X509Certificate issuerX509Certificate, String url) throws RevocationException, OCSPException {
if (serverX509Certificate == null) {
throw new RevocationException("Server certificate is null");
}
if (issuerX509Certificate == null) {
throw new RevocationException("Issuer certificate for server certificate not identified");
}
OCSPReq req = generateOcspRequest(issuerX509Certificate, serverX509Certificate.getSerialNumber());
// 2. make binary request online
byte[] binaryResp = this.postData(req, url);
//3. check result
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revocationResponse = this.processOcspResponse(serverX509Certificate, binaryResp);
} catch (NoSuchProviderException e) {
throw new RevocationException(e);
throw new RevocationException(e);
}
return revocationResponse;
}
private OCSPReq generateOcspRequest(X509Certificate rootX509Certificate, BigInteger serialNumber) throws OCSPException {
CertificateID certificateID = new CertificateID(CertificateID.HASH_SHA1, rootX509Certificate, serialNumber);
return this.generateOcspRequest(certificateID);
private OCSPReq generateOcspRequest(CertificateID id) throws OCSPException {
OCSPReqGenerator ocspRequestGenerator = new OCSPReqGenerator();
ocspRequestGenerator.addRequest(id);
return ocspRequestGenerator.generate();
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private RevocationResponse processOcspResponse(X509Certificate serverX509Certificate, byte[] binaryResp) throws IOException, OCSPException, RevocationException, NoSuchProviderException {
OCSPResp ocspResponse = new OCSPResp(binaryResp);
RevocationResponse revocationResponse = new RevocationResponse();
switch (ocspResponse.getStatus()) {
case OCSPResponseStatus.SUCCESSFUL: {
Object responseObject = ocspResponse.getResponseObject();
if (!(responseObject instanceof BasicOCSPResp)) {
throw new IllegalStateException("ocsp response is of unexpected type");
BasicOCSPResp basicResp = (BasicOCSPResp) responseObject;
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/* check condition:
The certificate identified in a received response corresponds to
that which was identified in the corresponding request;
*/
SingleResp[] responses = basicResp.getResponses();
if (responses.length != 1) {
throw new IllegalStateException("unexpected number of responses received");
}
SingleResp singleResp = responses[0];
if (!serverX509Certificate.getSerialNumber().equals(singleResp.getCertID().getSerialNumber())) {
throw new RevocationException("Serial number mismatch problem");
}
X509Certificate ocspCertificate = this.findOcspClientCertificate(basicResp.getCerts("BC"));
/* check condition
The signature on the response is valid;
The chain is validated other check
*/
//if(!this.verifyOcspCertificateChain(certificate, ocspCertificate)) {
// throw new IllegalStateException("Certificate used to sign OCSP Response could not be verified");
//}
/* check the signature on the ocsp response */
if (!basicResp.verify(ocspCertificate.getPublicKey(), "BC")) {
throw new RevocationException("signature validation failed for ocsp response");
}
if (!canSignOcspResponses(ocspCertificate)) {
throw new RevocationException("ocsp signing certificate has not been cleared for ocsp response signing");
}
/* check expiry of the signing certificate */
if (!certificateValid(ocspCertificate)) {
throw new IllegalStateException("ocsp signing certificate is not valid");
}
Object certStatus = singleResp.getCertStatus();
// according to org.openoces.ooapi.utils.ocsp.ResponseParser.cs (DanID test code)
// in the TU11, method SerialNumberInResponseIsNotRevoked(..),
// when the certificateStatus is empty, all is okay - not revoked
// no revocation data exist - the certificate must be valid
revocationResponse.setIsValid(true);
revocationResponse.setNextUpdate(singleResp.getNextUpdate());
} else if (certStatus == org.bouncycastle.ocsp.CertificateStatus.GOOD) {
// this is the expected certificateStatus for valid certificates
// however if the status is good the certStatus is null
revocationResponse.setIsValid(true);
revocationResponse.setNextUpdate(singleResp.getNextUpdate());
} else if (certStatus instanceof org.bouncycastle.ocsp.RevokedStatus) {
revocationResponse.setIsValid(false);
revocationResponse.setNextUpdate(singleResp.getNextUpdate());
} else if (certStatus instanceof org.bouncycastle.ocsp.UnknownStatus) {
throw new RevocationException("ocsp response indicates unknown certificate status");
} else {
throw new RevocationException("unknown status");
}
break;
}
case OCSPResponseStatus.INTERNAL_ERROR:
case OCSPResponseStatus.MALFORMED_REQUEST:
case OCSPResponseStatus.SIG_REQUIRED:
case OCSPResponseStatus.TRY_LATER:
case OCSPResponseStatus.UNAUTHORIZED:
new RevocationException("OCSPResponseStatus not valid!");
}
}
return revocationResponse;
}
private byte[] postData(OCSPReq req, String url) throws RevocationException {
try {
HttpURLConnection conn = postRequest(req.getEncoded(), url);
if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
log.warn("http response code from OCSP request was: " + conn.getResponseCode());
throw new RevocationException("http response code from OCSP request was: " + conn.getResponseCode());
}
int len = conn.getContentLength();
log.error("Error doing OCSP lookup by url " + url + ": " + e.getMessage(), e);
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throw new RevocationException(e);
}
}
private HttpURLConnection postRequest(byte[] bs, String responderURL) throws IOException {
HttpURLConnection conn = this.setupHttpConnectionForPost(bs.length, responderURL);
OutputStream os = conn.getOutputStream();
os.write(bs);
conn.connect();
os.close();
return conn;
}
private HttpURLConnection setupHttpConnectionForPost(int contentLength, String responderURL) throws IOException {
HttpURLConnection conn;
conn = (HttpURLConnection) new URL(responderURL).openConnection();
conn.setAllowUserInteraction(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Length", "" + contentLength);
conn.setRequestProperty("Content-Type", "application/ocsp-request");
return conn;
}
private byte[] readResponse(HttpURLConnection conn, int len) throws IOException {
InputStream is = conn.getInputStream();
byte[] respData = new byte[len];
int bRead = 0;
do {
bRead += is.read(respData, bRead, Math.min(1024, len - bRead));
} while (bRead != len);
is.close();
conn.disconnect();
return respData;
}
public X509Certificate findIssuerCertificate(X509Certificate certificate) {
// tree possibilities
// 1 - A root certificate - exist in root list
// 2 - A root certificate not trusted - not in list
// 3 - Issuer certificate, can can be downloaded
X509Certificate issuerCertificate;
String key = certificate.getIssuerDN().getName();
if (this.rootCertificateMap.containsKey(key)) {
// root certificate is in the trusted key store (possibility 1)
issuerCertificate = this.rootCertificateMap.get(key);
// So down to possibility 2 or 3
// 2 - A root certificate not trusted - not in list
// 3 - Issuer certificate, can can be downloaded
// So we will try to download the certificate
issuerCertificate = this.certificateUtil.downloadIssuerCert(certificate);
// if ( issuerCertificate== null){
// The issuer certificate is a root certificate , but not trusted (oces1)
// Possible 2
//} else {
// The issuer certificate is a issuerCertificate (oces2)
// Possible 3
// }
}
return issuerCertificate;
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/*
public OCSPResp sendOCSPRequestPOST(String postURL, X509Certificate certificate) throws CryptoCoreOCSPException
{
OCSPResp ocspResp = null;
try
{
BASE64Encoder encoder=new BASE64Encoder();
String certBase64 = encoder.encodeBuffer(certificate.getEncoded());
URL url = new URL(postURL);
URLConnection con = url.openConnection();
con.setReadTimeout(10000);
con.setConnectTimeout(10000);
con.setAllowUserInteraction(false);
con.setUseCaches(false);
con.setDoOutput(true);
con.setDoInput(true);
con.setRequestProperty("Content-Type", "application/octet-stream");
OutputStream os = con.getOutputStream();
os.write(certBase64.getBytes());
os.close();
byte[] resp64 = OS.inputStreamToByteArray(con.getInputStream());
byte[] bresp = Base64.decode(resp64);
if (bresp.length==0)
ocspResp = new OCSPResp(new OCSPResponse(null));
else
ocspResp = new OCSPResp(bresp);
}
catch (CertificateEncodingException cee)
{
throw new CryptoCoreOCSPException(
"Can not send OCSP request. Certificate encoding is not valid", cee);
}
catch (IOException ioe)
{
throw new CryptoCoreOCSPException("Can not recover response from server " + postURL,
ioe);
}
return ocspResp;
} */
public String GetServerUriFromCertificate(X509Certificate certificate) throws RevocationException {
// not optimal implementation - could be improved - look at danIds OOAPI TU11
try {
byte[] ext = certificate.getExtensionValue(X509Extensions.AuthorityInfoAccess.getId());
ASN1InputStream aIn = new ASN1InputStream(ext);
aIn = new ASN1InputStream(((ASN1OctetString) aIn.readObject()).getOctets());
ASN1Encodable object = (ASN1Encodable) aIn.readObject();
AuthorityInformationAccess auth = AuthorityInformationAccess.getInstance(object);
AccessDescription[] acc = auth.getAccessDescriptions();
return acc[0].getAccessLocation().toString().substring(3);
} catch (IOException e) {
throw new RevocationException(e);
}
}
public List<String> getAuthorityInformationAccessOcspUrl(X509Certificate x509Certificate) {
List<String> ocspUrls = new ArrayList<String>();
try {
byte[] extBytes = x509Certificate.getExtensionValue(X509Extensions.AuthorityInfoAccess.getId());
ASN1InputStream extensionAns1InputStream = new ASN1InputStream(extBytes);
ASN1OctetString ans1OctetString = (ASN1OctetString) extensionAns1InputStream.readObject();
byte[] octetsBytes = ans1OctetString.getOctets();
ASN1InputStream octetAns1InputStream = new ASN1InputStream(octetsBytes);
ASN1Encodable ans1Encodable = octetAns1InputStream.readObject();
AuthorityInformationAccess auth = AuthorityInformationAccess.getInstance(ans1Encodable);
AccessDescription[] accessDescriptionArray = auth.getAccessDescriptions();
GeneralName generalName;
String url;
for (AccessDescription anAccessDescriptionArray : accessDescriptionArray) {
generalName = anAccessDescriptionArray.getAccessLocation();
url = generalName.toString();
if (url.length() > 3) {
ocspUrls.add(url.substring(3));
}
}
return ocspUrls;
}
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/*
* dlk 2012-04-19
*
* Commented because it is not used
*/
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// private RevocationResponse isCertificateRevoked(X509Certificate certificate, List<X509Certificate> issuerCertificateList) {
// // Start out by building the certificate chain
// // It is done by by retrieving the issuer certificate,
// // until the issuer is the certificate itself, and that certificate is in
// // the issuerCertificateList.
// RevocationResponse revocationResponse = null;
// int index = 0;
//
// while (revocationResponse == null && index < issuerCertificateList.size()) {
// revocationResponse = isCertificateRevoked(certificate, issuerCertificateList.get(index));
// index++;
// }
// return revocationResponse;
// }
// private RevocationResponse isCertificateRevoked(X509Certificate certificate, X509Certificate issuerCertificate) {
// RevocationResponse revocationResponse = null;
//
// try {
// OCSPReqGenerator ocspReqGenerator = new OCSPReqGenerator();
//
// // ToDo : the middle certificate might be downloaded from ldap...
// CertificateID certificateID = new CertificateID(CertificateID.HASH_SHA1, issuerCertificate, certificate.getSerialNumber());
// ocspReqGenerator.addRequest(certificateID);
// CertificateUtil certificateUtil = new CertificateUtil();
// String url;
// List<URL> urlList = certificateUtil.getOcspUrls(certificate);
// if (urlList.size() <= 0) {
// url = this.GetServerUriFromCertificate(certificate);
// } else {
// url = urlList.get(0).toString();
// }
//
// byte[] postByte = HttpClient.doPostOCSPRequest(ocspReqGenerator.generate().getEncoded(), url);
// OCSPResp resp = new OCSPResp(postByte);
//
// revocationResponse = this.validateOCSPResponse(certificateID, resp);
// } catch (Exception e) {
// log.error("Error: " + e.getMessage(), e);
// }
}
catch (InternalException e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (IOException e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (RevocationException e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (MalformedURLException e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (OCSPException e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (Exception e1) {
e1.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
if (resp.getStatus() != OCSPResponseStatus.SUCCESSFUL) {
throw new IllegalStateException("ocsp response status: " + resp.getStatus());
Object responseObject = resp.getResponseObject();
if (!(responseObject instanceof BasicOCSPResp)) {
throw new IllegalStateException("ocsp response is of unexcepted type");
BasicOCSPResp basicResp = (BasicOCSPResp) responseObject;
*/
/* check condition:
The certificate identified in a received response corresponds to
that which was identified in the corresponding request;
*/
/* SingleResp[] responses = basicResp.getResponses();
if (responses.length != 1) {
throw new IllegalStateException("unexpected number of responses received");
}
if (!id.getSerialNumber().equals(responses[0].getCertID().getSerialNumber())) {
throw new Exception("Serial number mismatch problem");
}
X509Certificate ocspCertificate = findOcspClientCertificate(basicResp.getCerts("BC"));
*/
/* check condition
The signature on the response is valid;
*/
/* if(!verifyOcspCertificateChain(certificate, ocspCertificate)) {
throw new IllegalStateException("Certificate used to sign OCSP Response could not be verified");
} */
/* check the signature on the ocsp response */
/* if (!basicResp.verify(ocspCertificate.getPublicKey(), "BC")) {
throw new Exception("signature validation failed for ocsp response");
}
if (!canSignOcspResponses(ocspCertificate)) {
throw new Exception("ocsp signing certificate has not been cleared for ocsp response signing");
}
/* check expiry of the signing certificate */
/*if (!certificateValid(ocspCertificate)) {
throw new IllegalStateException("ocsp signing certificate is not valid");
} */
/* check condition
The time at which the status being indicated is known to be
correct (thisUpdate) is sufficiently recent.
*/
/* SingleResp response = responses[0];
long diff = response.getThisUpdate().getTime() - new Date().getTime();
if (diff > 60 * 1000L) {
throw new Exception("ocsp response signature is from the future. Timestamp of thisUpdate field: " + new Date(response.getThisUpdate().getTime()));
}
if (response.getNextUpdate() != null && response.getNextUpdate().before(new Date())) {
throw new Exception("ocsp response is no longer valid");
}
if (certStatus == null) {
return false;
} else if (certStatus instanceof RevokedStatus) {
return true;
} else if (certStatus instanceof UnknownStatus) {
throw new Exception("ocsp response indicates unknown certificate status");
} else {
throw new Exception("unknown status");
}
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//
// return revocationResponse;
// }
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/*
* dlk 2012-04-19
*
* Commented because it is not used
*/
// private RevocationResponse validateOCSPResponse(CertificateID certificateID, OCSPResp resp) throws OCSPException, NoSuchProviderException {
//
// if (resp == null) {
// return null;
// }
//
// if (resp.getStatus() != OCSPResponseStatus.SUCCESSFUL) {
// return null;
// }
//
// Object responseObject = resp.getResponseObject();
// if (!(responseObject instanceof BasicOCSPResp)) {
// return null;
// }
//
// RevocationResponse revocationResponse = null;
// BasicOCSPResp basicResp = (BasicOCSPResp) responseObject;
//
// /* check condition:
// The certificate identified in a received response corresponds to
// that which was identified in the corresponding request;
// */
// SingleResp[] responses = basicResp.getResponses();
// if (responses.length != 1) {
// return revocationResponse; //throw new IllegalStateException("unexpected number of responses received");
// }
//
// if (!certificateID.getSerialNumber().equals(responses[0].getCertID().getSerialNumber())) {
// return revocationResponse; //throw new Exception("Serial number mismatch problem");
// }
//
// X509Certificate ocspCertificate = findOcspClientCertificate(basicResp.getCerts("BC"));
//
// /* check condition
// The signature on the response is valid;
// */
// /* if(!verifyOcspCertificateChain(certificate, ocspCertificate)) {
// return revocationResponse; //throw new IllegalStateException("Certificate used to sign OCSP Response could not be verified");
// }*/
//
// /* check the signature on the ocsp response */
// if (!basicResp.verify(ocspCertificate.getPublicKey(), "BC")) {
// return revocationResponse; //throw new Exception("signature validation failed for ocsp response");
// }
//
// if (!canSignOcspResponses(ocspCertificate)) {
// return revocationResponse; //throw new Exception("ocsp signing certificate has not been cleared for ocsp response signing");
// }
//
//
// /* check expiry of the signing certificate */
// if (!certificateValid(ocspCertificate)) {
// return revocationResponse; //throw new IllegalStateException("ocsp signing certificate is not valid");
// }
//
// /* check condition
// The time at which the status being indicated is known to be
// correct (thisUpdate) is sufficiently recent.
// */
// SingleResp response = responses[0];
//
// /* long diff = response.getThisUpdate().getTime() - new Date().getTime();
// if (diff > 60 * 1000L) {
// throw new Exception("ocsp response signature is from the future. Timestamp of thisUpdate field: " + new Date(response.getThisUpdate().getTime()));
// }*/
//
// if (response.getNextUpdate() == null) {
// // next update null - can not be used or can it ???
// return revocationResponse;
// }
//
// if (response.getNextUpdate() != null && response.getNextUpdate().before(new Date())) {
// return revocationResponse; //throw new Exception("ocsp response is no longer valid");
// }
//
// Object certStatus = response.getCertStatus();
// if (certStatus == null) {
//
// /*
// * new Date(2013, 1, 1) in java is year 1900 + 2013 = 3913, 1 of February.
// *
// * So if we want to set it to 1.1.2013, let's use Calendar object like this:
// *
// * Calendar c = Calendar.getInstance();
// *
// * c.set(2013, 0, 1);
// */
//// return new RevocationResponse(true, new Date(2013,1,1) );
// // hack:
// /*
// * TODO: Find why certStatus can be null, for now we just consider
// * certificate as non-revoked and set expiration date to current
// * date plus one day to avoid hardcoding of any exact date
// */
// Calendar c = Calendar.getInstance();
// c.add(Calendar.DATE, 1);
// return new RevocationResponse(true, c.getTime());
// //return revocationResponse;
// } else if (certStatus instanceof RevokedStatus) {
// return new RevocationResponse(true, response.getNextUpdate());
// } else if (certStatus instanceof UnknownStatus) {
// return revocationResponse; // throw new Exception("ocsp response indicates unknown certificate status");
// } else {
// return revocationResponse; //throw new Exception("unknown status");
// }
// }
private boolean certificateValid(X509Certificate ocspCertificate) {
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try {
ocspCertificate.checkValidity();
return true;
} catch (CertificateExpiredException e) {
return false;
} catch (CertificateNotYetValidException e) {
return false;
}
}
private boolean canSignOcspResponses(X509Certificate ocspCertificate) {
try {
return ocspCertificate.getExtendedKeyUsage().contains(KeyPurposeId.id_kp_OCSPSigning.getId());
} catch (CertificateParsingException e) {
throw new RuntimeException("ocsp signing certificate has not been cleared for ocsp response signing");
}
}
private X509Certificate findOcspClientCertificate(X509Certificate[] certs) {
int KeyUsageDigitalSignature = 0;
X509Certificate ocspCert = null;
for (X509Certificate certificate : certs) {
boolean[] keyUsage = certificate.getKeyUsage();
if (keyUsage != null && keyUsage[KeyUsageDigitalSignature] && null != certificate.getExtensionValue(OCSPObjectIdentifiers.id_pkix_ocsp_nocheck.getId())) {
ocspCert = certificate;
}
}
if (ocspCert == null) {
throw new RuntimeException("Could not find valid OCSP certificate");
}
return ocspCert;
}
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/**
* @return Always returns OCSP
* @since OIORASP 1.3.0
*/
@Override
public RevocationSourceType getRevocationSourceType() {
return RevocationSourceType.OCSP;
}