Traditional network covert channels have become insecure due to the continuous
improvement of traffic analysis techniques. As an emerging technology combined with …

Covert communication enables covert information transmission in an undetectable way to
prevent the exposure of communication behaviors. Blockchain-based covert communication …

With the continuous improvement of the traffic analysis techniques, traditional network covert
channels based on the TCP/IP architecture are facing many risks. Blockchain is a new kind …

Covert channels are designed to protect the communication relationship of the sender and
receiver. Traditional covert channels have become insecure due to the continuous …

Blockchain, as a decentralized database, provides natural anonymity and tamper-
resistance, safeguarding the identity of both parties in covert communication and preventing …

Existing public blockchain-based covert communication systems are suffering the issues of
insufficient robustness, anti-temper modification, and anonymity at both the transaction and …

Covert communication has been using to prevent confidential information from being leaked
to an unintended receiver. In this paper, we present a general purpose novel methodology …

Blockchain-based covert communication has opened up a new research direction for the
covert communication field. In blockchain-based storage covert communication, reliability …

Blockchain technology is an immutable database that cannot be censored, tampered with, or
erased, which can increase credibility and reduce interaction costs. Therefore, blockchain …

As an extension of the traditional encryption technology, information hiding has been
increasingly used in the fields of communication and network media, and the covert …