Analysis and Improvement of Blockchain-Based Multilevel Privacy-Preserving Location Sharing Scheme for Telecare Medical Information Systems

Algorithm 7

Location record generation.

	Input:
	LDO’s j-th location ; Region ; LDO’s secret keys and ; LDO’s signing key
	Output:
	Location record
(1)	for
(2)	ifthen
(3)	;
(4)	end if
(5)	ifthen
(6)	;
(7)	end if
(8)	end for
(9)
(10)
(11)	;
(12)	;
(13)	Generate a random number ;
(14)	;
(15)	;
(16)
(17)
(18)	return