A Provably Secure Anonymous Authenticated Key Exchange Protocol Based on ECC for Wireless Sensor Networks

Table 3

Comparisons of security features.

Protocols	Wu et al.’s [16]	Jiang et al.’s [17]	Wang et al.’s [18]	Li et al.’s [19]	Our protocol
The replay attack	secure	secure	secure	secure	secure
The privileged insider attack	secure	secure	secure	secure	secure
The GW-node impersonation attack	secure	secure	secure	secure	secure
The stolen verifier attack	secure	secure	secure	secure	secure
The off-line dictionary attack	secure	secure	secure	secure	secure
The compromised sensor node attack	secure	secure	secure	secure	secure
Mutual authentication	yes	yes	yes	yes	yes
Session key establishment	yes	yes	yes	yes	yes
Key privacy	yes	no	yes	no	yes
User anonymity	weak	weak	weak	weak	strong
Formal security proof	yes	yes	yes	yes	yes