Comparative Study on Various Authentication Protocols in Wireless Sensor Networks

Table 1

Several attacks and their corresponding security mechanisms in WSN.

Type of attack	Layer	Security mechanism
Jamming	Physical	() Lower duty cycle
		() Spread-spectrum technique
Tampering	Physical	() Key management schemes
Collision	Data link	() Error correcting code
Exhaustion	Data link	() Rate limitation
Replayed routing information	Network	() Encryption techniques
		() Authentication schemes
Selective forwarding attack	Network	() Redundancy technique
		() Probing mechanism
Sybil attack	Network	() Authentication schemes
Sinkhole attack	Network	() Authentication schemes
		() Redundancy technique
		() Monitoring
Wormhole attack	Network	() Flexible route selection method
HELLO flood attack	Network	() 2-way authentication method
		() 3-way handshake method
Flooding attack	Transport	() Minimizing connection numbers
		() Client puzzles
Clone attack	Application	() Unique pairwise keys