Minimum Latency-Secure Key Transmission for Cloud-Based Internet of Vehicles Using Reinforcement Learning

Table 1

Important parameter symbols.

Parameter	Meaning
	The number of vehicles in the cluster at time k
	The average speed of cluster vehicles
	Cluster critical update decisions for the first D moments
	Cluster communication security level
	Update key decision
	Update key length
λ	Poisson distribution mean
VPK/VSK	Vehicle’s public/private key
RPK/RSK	RSU public/private key
n	Random prime is chosen by TA
E(·)	Encryption
h(·)	Hash function
	Send/receive timestamp