Tree-Based Public Key Encryption with Conjunctive Keyword Search

Algorithm 6

The algorithm for encrypting each node in the index tree, declared by encryptNode (, ).

Input: a tree node and the public key .
Output: an encrypted node .
(1)	if is then
(2)	return
(3)	end if
(4)	if is a leaf node then
(5)	calls to generate , and replaces with ;
(6)	else This means is an internal node.
(7)	calls to generate , and replaces with ;
(8)	calls encryptNode (, );
(9)	calls encryptNode (, );
(10)	end if
(11)	return