* Generates a Type 1 NTLM message.
     *
     * @param domain the domain name
     * @param workstation the workstation name
     * @return the Base64-encoded Type 1 message
     * @throws NTLMEngineException if an NTLM engine error occurs
     */
    @Override
    public String generateType1Msg(final String domain, final String workstation) throws NTLMEngineException {

            final String workstation = paramMap.get(CRAWLER_WEB_AUTH + "." + webAuthName + ".workstation");
            final String domain = paramMap.get(CRAWLER_WEB_AUTH + "." + webAuthName + ".domain");
            credentials = new NTCredentials(username, password == null ? StringUtil.EMPTY : password,
                    workstation == null ? StringUtil.EMPTY : workstation, domain == null ? StringUtil.EMPTY : domain);

            final Map<String, String> parameterMap = ParameterUtil.parse(getParameters());
            final String workstation = parameterMap.get("workstation");
            final String domain = parameterMap.get("domain");
            return new NTCredentials(getUsername(), getPassword(), workstation == null ? StringUtil.EMPTY : workstation,
                    domain == null ? StringUtil.EMPTY : domain);
        }