public CKR C_EX_GetCertificateInfoText(NativeULong session,
                NativeULong cert, out IntPtr info, out NativeULong infoLen)
        {
            if (_disposed)
                throw new ObjectDisposedException(GetType().FullName);

            NativeULong rv = _rutokenDelegates.C_EX_GetCertificateInfoText(session, cert, out info, out infoLen);

            return (CKR)rv;
        }