Secure Information Sharing System for Online Patient Networks

Table 3

Random number and group key.

		Users
				...
session 1	random number			...
	group key	;	;	...
				...
				...
				...
				...
				...
session 2	random number			...
	group key	;	;	...
				...
				...
				...
				...
				...
session 3...	...	...	...	...