SMCP: a Secure Mobile Crowdsensing Protocol for fog-based applications

Table 3 Security features comparison of SMCP with some other protocols

Feature	SMCP	[19]	[20]	[21]	[30]	[31]
Dynamic fog device registration	\(\checkmark \)
Edge registration	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)		\(\checkmark \)
Fog registration	\(\checkmark \)	\(\checkmark \)		\(\checkmark \)
Secure edge-fog communication	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)		\(\checkmark \)
Secure fog-cloud communication	\(\checkmark \)	\(\checkmark \)			\(\checkmark \)	\(\checkmark \)
Fog device monopolization	\(\checkmark \)
Offline password guessing attack	\(\checkmark \)	\(\checkmark \)		\(\checkmark \)
Revocation policy		\(\checkmark \)		\(\checkmark \)		\(\checkmark \)
User anonymity	\(\checkmark \)	\(\checkmark \)			\(\checkmark \)	\(\checkmark \)
Replay attack	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)	\(\checkmark \)
User impersonification attack	\(\checkmark \)	\(\checkmark \)			\(\checkmark \)