In todays systems, {HEAD ~ information} is transmitted between respective nodes over telecommunication lines which may be intercepted by {TAIL ~ an adversary} 
In todays systems , { HEAD ~ information } is transmitted between respective nodes over telecommunication lines which may be intercepted by { TAIL ~ an adversary }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL