Security Analysis and Improvements of Session Key Establishment for Clustered Sensor Networks

Table 1

Security comparison of the proposed scheme.

Security attacks or features	Chen and Li’s	Lee and Kim’s	The proposed
	scheme [16]	scheme [17]	scheme
Data encryption using a session key	Partially	Partially	Yes
Session key attacks	Partially	Partially	Yes
Mutual authentication	No	No	Yes
Node impersonation attacks	Partially	No	Yes
MITM attacks	Partially	No	Yes
Secrecy of past session keys	Yes	Yes	Yes
Secrecy of future session keys	No	No	Yes
Replay attacks	Yes	No	Yes
Node capture attacks	Yes	No	Yes

Yes: the scheme resists the attacks or provides the functionality; No: the scheme does not resist the attacks or provide the functionality. Partially: “Yes” under the condition that the secret parameters stored in have not been exposed to an attacker.