/**
     * @param tc
     * @param targetDomain
     * @param host
     * @param initialToken
     * @param doSigning
     * @return a new context
     * @throws SmbException
     */
    SSPContext createContext ( CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning ) throws SmbException;


    /**
     * @return subject associated with the credentials
     */