Cluster-Based Authentication Process in a Smart City

Table 6

Dialogues of different entities.

User	Edge server	Service server	Central server
1. Requests ANu	1.1 Sends requested ANu
2. Requests with (IDu + ANu) for Ksec-u	2.1 Generates Ksec-u
	3. Requests ANes	3.1 Sends ANes
	4. Requests with (IDes + ANes) for Ksec-es	4.1 Generates Ksec-es
		5. Requests ANss	5.1 Sends ANss
		6. Requests with (IDss + ANss) for Ksec-ss	6.1 Generates Ksec-ss
			7. Generates Ksec-cs