A Bilinear Pairing-Based Dynamic Key Management and Authentication for Wireless Sensor Networks

Table 2

The cost comparison of the stored key and method used.

	IKDM [11]	TinyPBC [12]	KMTD [13]	Ours
Stored cost (cluster node)	1 SK + 2 IDs	N/A	2 SKs + 1 ID	1 SK + 2 IDs
Stored cost (sensor node)	2 SKs + 1 ID	1 SK + 2 IDs	2 SKs + 1 ID	1 SK + 2 IDs
New node algorithm	Yes	Yes	Yes	Yes
Detailed security analysis	No	No	Yes	Yes
Group-based protocol	Yes	No	Yes	Yes
Sensor’s homogeneity	Homogeneity	Homogeneity	Hierarchical	Hierarchical
GPS capability (cluster node)	No	No	No	Yes
Path planning agreements	No	No	No	Yes
Dynamic key management	No	No	Yes	Yes

SK: the session key.
ID: the identity.