An Attribute-Based Access Control Policy Retrieval Method Based on Binary Sequence

Algorithm 1

Policy retrieval algorithm based on binary identification.

	Input: AAR
	Output: the decision
	//: Binary identification and encoding of AAR
(1)	Init(AAR.policy_groupbinary);
(2)	Init(AAR.policy_code);
(3)	for(i = 0;i < AAR.policy_groupbinary.size(); i++) do
(4)	if(AAR[i]) exist then
(5)	AAR.policy_groupbinary.setposition(p) = 1;
(6)	end if
(7)	end for
(8)	for(j = 0; j < AAR.policy_code.size(); j++) do
(9)	if(AAR[j].attrvale) exit then
(10)	a = getposition(AAR[j].attrvale);
(11)	AAR.policycode.setposition(a) = 1;
(12)	end if
(13)	end for
	//policy retrieval
(14)	for(k = 0; k < Group.size; k++) do//
(15)	if (Group[k].groupbinary&AAR.groupbinary) = = Group[k].groupbinary) then
(16)	for( = 0;  < Group[k].size; ++) do
(17)	if (Group[k].ruleset[g].policycode&AAR.policy_code = = (Group[k].ruleset[g].policycode) then
(18)	Dodecide();
(19)	break;
(20)	end if;
(21)	continue;
(22)	end for;
(23)	continue;
(24)	end if
(25)	end for