byte[] ntlmClientChallenge = new byte[8];
            tc.getConfig().getRandom().nextBytes(ntlmClientChallenge);

            long ts = ( System.currentTimeMillis() + SmbConstants.MILLISECONDS_BETWEEN_1970_AND_1601 ) * 10000;
            if ( haveTimestamp ) {
                ts = ( (AvTimestamp) AvPairs.get(avPairs, AvPair.MsvAvTimestamp) ).getTimestamp();
            }

                    byte[] clientChallenge) {
        if (type2 == null || responseKeyNT == null || clientChallenge == null) {
            return null;
        }
        long nanos1601 = (System.currentTimeMillis() + MILLISECONDS_BETWEEN_1970_AND_1601) * 10000L;
        return NtlmPasswordAuthentication.getNTLMv2Response(responseKeyNT,
                    type2.getChallenge(),
                    clientChallenge,