A Privacy-Preserving Attribute-Based Encryption System for Data Sharing in Smart Cities

Algorithm 1

0- and 1-encoding generation.

Input: attribute set with name and value

Output: encoding set for each unequal attributes or

1: for any attribute do

2:  Divide attribute into attribute name and attribute value ;

3:  if attribute is an unequal attribute then

4:   Transfer into binary string

5:   if the access policy needs or for attribute then

6:    for any digit in do

7:     ifthen

8:      Set the first digits as a substring of

9:      Add into

10:     end if

11:    end for

12:   end if

13:   if the access policy needs or for attribute then

14:    for any digit in do

15:     ifthen

16:      Set the first digits as a substring of

17:      Add at the end of the substring

18:      Add into

19:     end if

20:    end for

21:   end if

22:   Combine the attribute name with or for unequal attributes

23:  end if

24: end for