Security and Communication Networks

Research Article

Cluster-Based Authentication Process in a Smart City

Symbols with their definitions.


Symbol	Definition

	Concatenation
ES, SS, CS	Edge server, service server, and central server
IDu, IDes, IDss, IDcs	ID of a user, edge server, service server, and central server, respectively
Pwd	Password of a user
ATu, ATes, ATss	Authentication Token for a user, edge server, and service server, respectively
RNcs	Random number of the central server
ANu, ANes, ANss, ANcs	Authentication number of user, edge server, service server, and the central server, respectively
ESsec, SSsec, CSsec	Secret key of edge server, service server, and central server, respectively
TSu, TSes, TSss, TScs	Time stamp for the user, edge server, service, and central server, respectively. Times tamp means date and time. In a time stamp an, k and AT represent authentication number, key, and authentication token, respectively. For example, TSu-an is the time stamp for generating the authentication number of a user
Ksec-u, Ksec-es, Ksec-ss	Private key of the user, edge server, and service server, respectively