Privacy-Enhancing Preferential LBS Query for Mobile Social Network Users

Algorithm 3

Anonymous LBS query request.

1: At the user:

2: [Message 1:User Leader l]

3: 

4: At the Leader l:

Input: N Set of users, k anonymity level

5: while true do

6:  if Message 1 is received from the user then

7:    C.Find();

8:   [Message2: Leader l User ];

9:   , , :  end if

11: end while

12: return;