Research Article
Covert Communication Scheme Based on Bitcoin Transaction Mechanism
Algorithm 3
Secret information extraction algorithm.
Input: Key K, symmetric key k. | Output: Secret information m, the ID of the special transaction ID_Ts. | (1) | ; | (2) | ; /∗K and k are negotiated in advance ∗/ | (3) | ; | (4) | ; | (5) | ; | (6) | ; | (7) | ; | (8) | ; | (9) | return m, ID_Ts; | (10) | end; |
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