A blockchain-based covert communication model based on dynamic base-k encoding

doi:10.23919/JCC.fa.2024-0476.202506

A blockchain-based covert communication model based on dynamic base-k encoding

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DOI：10.23919/JCC.fa.2024-0476.202506

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Blockchain, as a distributed ledger, inherently possesses tamper-resistant capabilities, creating a natural channel for covert communication. However, the immutable nature of data storage might introduce challenges to communication security. This study introduces a blockchain-based covert communication model utilizing dynamic Base-K encoding. The proposed encoding scheme utilizes the input address sequence to determine K to encode the secret message and determines the order of transactions based on K, thus ensuring effective concealment of the message. The dynamic encoding parameters enhance flexibility and address issues related to identical transaction amounts for the same secret message. Experimental results demonstrate that the proposed method maintains smooth communication and low susceptibility to tampering, achieving commendable concealment and embedding rates.

Keywords:

base-K encoding

blockchain

concealment

covert communication

A blockchain-based covert communication model based on dynamic base-k encoding

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