A Noninterference Model for Mobile OS Information Flow Control and Its Policy Verification

Algorithm 1

QEILCM ().

	Input: array : each item records a subject’s levels and capabilities. : sum of the subjects. : set of mutually exclusive tags constraints.
	Output: if can reach , then print the path; else print “unreachable.”
	QEILCM ()
	{
	if
	then;
	else ; }
	Backtrack (depth, u, curpath, pathlen)
	{ if return 0;
	if not return 1;
	ifreturn 0;
	for
	{ ifcontinue;
	if
	continue;
	;
	;.
	ifreturn 1;
	;.
	; }
	return 0; }