Selecting Critical Data Flows in Android Applications for Abnormal Behavior Detection

Algorithm 1

CFlowSel.

Input: : all sensitive data flows; : data-flow vectors of

   benign apps; : data-flow vectors of malicious apps;

   : the threshold-difference

Output: , a set of critical sensitive data flows

() Let return the total count of elements

   which contain sensitive data flow in data-flow vector set

() Let return the count of elements in data-flow vector set

() procedure CFlowSel

()  

()  for do

()     

()     

()     

()     

()   if then

()     

()   end if

()  end for

()  return

() end procedure