A Lightweight Authenticated Key Agreement Protocol Using Fog Nodes in Social Internet of Vehicles

Table 3

Comparisons of security.

Security properties	[10]	[34]	[9]	[32]	Ours
Mutual authentication	✔	✔	✔	✔	✔
User anonymity		✔	✔	✔	✔
Perfect forward secrecy	✔	—	✔	✔	✔
Man-in-the-middle attacks	✔	—	—	✔	✔
Impersonation attacks	✔	✔	✔	✔	✔
Known session-specific temporary information attacks		—	✔	✔	✔
Untraceability		✔	✔	✔	✔
Offline password guessing attacks	✔	✔	—	✔	✔
Replay attacks	✔	✔	✔	✔	✔