A Secure and Efficient Lightweight Vehicle Group Authentication Protocol in 5G Networks

Table 1

Notations.

Notations	Definitions
TA	A trusted authority
RSU	A roadside unit
OBU	On-board units
	The hash function
{G}	Mutually prime nonrepeating positive integer library
	Exclusive-OR operation
||	Concatenation operation
	The timestamp
	The large prime number
	The system public key
	The system master key
	Message authentication code