Privacy-Preserving Query Scheme (PPQS) for Location-Based Services in Outsourced Cloud

Algorithm 4

Type retrieval.

Input: , ,
Output:
(1)	Initialize to an empty list;
(2)	;
(3)	while do
(4)	;
(5)	if then
(6)	;
(7)	;
(8)	else
(9)	;
(10)	end if
(11)	end while
(12)	the TRC sends to the LRC;