Covert Communication Scheme Based on Bitcoin Transaction Mechanism

Algorithm 5

Transaction withdrawal algorithm.

Input: The fee of special transaction Fees, the address generated with the key K as the private key AK, normal address A.
Output: The transaction that causes double-spend conflict Tdp.
(1)	After Ts is broadcast;
(2)	;
(3)	While ;
(4)	++;
(5)	End While;
(6)	;
(7)	end;