Tree-Based Public Key Encryption with Conjunctive Keyword Search

Algorithm 1

Converting a document into a “0-1” vector.

Input: a keyword set of a document and a group of keyword sets .
Output: a “0-1” vector for the document.
(1)	Creates a zero vector whose length is .
(2)	fordo
(3)	fordo
(4)	ifthen
(5)	= 1;
(6)	end if
(7)	end for
(8)	end for
(9)	= 1;
(10)	return;