public bool CheckFingerprintStore()
        {
            if (_FPStore == null)
            {
                throw new NullReferenceException("No FingerprintStore to work with");
            }

            using (var sha1 = new SHA1CryptoServiceProvider())
            {
                byte[] fingerprint = _Certificate.GetCertHash();
                return(_FPStore.ContainsFingerprint(fingerprint));
            }
        }