long nonceTimeinMillis)
throws Exception {
DigestCalculator digestCalc = new JcaDigestCalculatorProviderBuilder()
.setProvider("BC").build().get(CertificateID.HASH_SHA1);
X509CertificateHolder issuerHolder = new X509CertificateHolder(issuerCertificate.getEncoded());
CertificateID certId = new CertificateID(digestCalc, issuerHolder, certificate.getSerialNumber());
// request
//create a nonce to avoid replay attack
BigInteger nonce = BigInteger.valueOf(nonceTimeinMillis);
DEROctetString nonceDer = new DEROctetString(nonce.toByteArray());
Extension ext = new Extension(OCSPObjectIdentifiers.id_pkix_ocsp_nonce, true, nonceDer);
Extensions exts = new Extensions(ext);
OCSPReqBuilder ocspReqBuilder = new OCSPReqBuilder();
ocspReqBuilder.addRequest(certId);
ocspReqBuilder.setRequestExtensions(exts);
OCSPReq ocspReq = ocspReqBuilder.build();
SubjectPublicKeyInfo keyInfo = new SubjectPublicKeyInfo
(CertificateID.HASH_SHA1, ocspResponderCertificate.getPublicKey().getEncoded());
BasicOCSPRespBuilder basicOCSPRespBuilder = new BasicOCSPRespBuilder(keyInfo, digestCalc);
basicOCSPRespBuilder.setResponseExtensions(exts);
// request processing
Req[] requestList = ocspReq.getRequestList();
for (Req ocspRequest : requestList) {
CertificateID certificateID = ocspRequest.getCertID();
CertificateStatus certificateStatus = CertificateStatus.GOOD;
if (revoked) {
certificateStatus = new RevokedStatus(new Date(), CRLReason.privilegeWithdrawn);
}
basicOCSPRespBuilder.addResponse(certificateID, certificateStatus);