Covert Communication Scheme Based on Bitcoin Transaction Mechanism

Algorithm 4

Update of key and address algorithm.

Input: Key K, the ID of the special transaction ID_Ts.
Output: Key K, symmetric key k, the address generated with the key K as the private key AK.
(1)	;
(2)	;
(3)	;
(4)	return K, k, AK;
(5)	end;