IPTV Service Framework Based on Secure Authentication and Lightweight Content Encryption for Screen-Migration in Cloud Computing

Table 2

Authentication cost parameters.

Symbol	Description	Value
	Mobile to STB	1 ms
	STB to service provider	1.5 ms
	Service provider to license provider	2 ms
	License provider to content provider	2.5 ms
	License provider to content provider	3 ms
	Mobile to content provider	3.5 ms