Blockchain-Enabled Public Key Encryption with Multi-Keyword Search in Cloud Computing

Algorithm 1

Ciphertexts retrieval.

(1)	if and $userdeposit Gaslsrch $gasprice + $offer then;
(2)	Compute , , ;
(3)	if is the same as then;
(4)	Return the file indexes to CS;
(5)	else;
(6)	Return 0;
(7)	Set =+;
(8)	Send to . Then, send to executor of a deal;
(9)	Finally, set =-;
(10)	else;
(11)	Send to ;
(12)	end;