/// <summary>Generates an OCSP request using BouncyCastle.</summary>
/// <param name="issuerCert">certificate of the issues</param>
/// <param name="serialNumber">serial number</param>
/// <returns>an OCSP request</returns>
private static OcspReq GenerateOCSPRequest(X509Certificate issuerCert, BigInteger serialNumber)
{
//Add provider BC
// Generate the id for the certificate we are looking for
CertificateID id = SignUtils.GenerateCertificateId(issuerCert, serialNumber, Org.BouncyCastle.Ocsp.CertificateID.HashSha1
);
// basic request generation with nonce
return(SignUtils.GenerateOcspRequestWithNonce(id));
}