Trusted and Efficient Cross-Domain Access Control System Based on Blockchain

Algorithm 5

mapRole.

(1)	Input: role, Uid
(2)	output: string
(3)	% map a role to the DMS’s role.
(4)	rule = Stub.GetState (Uid)
(5)	role’ = match (role, rule)
(6)	if (role’ ! = null) then
(7)	return role’;
(8)	else
(9)	return ‘9001’;