The Scientific World Journal

Research Article

A Layered Searchable Encryption Scheme with Functional Components Independent of Encryption Methods

Algorithm 5

Encryption (asymmetric): Enc ).
Input: encryption key , the documents ).
Output:
(1) : encrypted documents ).
(2) : global searchable structures ).
(3) : local functional structures ).
Method:
(1) for each document ( ) in   do
(2)  compute ← ASE·Enc ).
(3)  scan for all words to form a word list ).
(4)  extract distinct keywords ) from .
(5)  for each word ( ) in   do
(6)   compute ← ASE·PEKS .
(7)   compute .
(8)  end for
(9)  let map to map to .
(10)  for each word ( ) in   do
(11)   find the that the corresponding word .
(12)   set .
(13)  end for
(14)  let .
(15)  for each functional component ( ) do
(16)   compute ·Build .
(17)  end for
(18)  append to .
(19) end for
(20) output , , .