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

Algorithm 3

uploadPolicy.

(1)	Input: devID, policy, sig
(2)	output: bool
(3)	% invoke by DMS to upload the device’s access policies.
(4)	% policy = {“role1, op1&op2&op3”;…}
(5)	%
(6)	if verify (DMS_ID, sig) = true && devID.DO = = DMS_ID.DO then
(7)	{
(8)	if stub.GetState (devPK) ! = null then
(9)	updateAHL (policy_update, devPK);
(10)	stub.PutState (devPK, policy);
(11)	return 0;
(12)	}
(13)	else
(14)	return 1;