MRCC: A Practical Covert Channel Over Monero With Provable Security

Covert channels are designed to protect the communication relationship of sender and receiver. Traditional covert have become insecure due continuous improvement traffic analysis techniques. In this context, there is an urgent need identify new approaches for channels. Blockchain emerging technique with characteristics user anonymity, a flooding propagation mechanism, tamper resistance, which make it compelling platform Previous applied Bitcoin as underlying blockchain, its pseudoanonymity may expose relationship. Moreover, reliance these on prenegotiated labels transactions containing messages further reduced their concealment. work, we present practical secure channel over Monero. Compared Bitcoin, Monero's full anonymity efficiently protects between no employed special transactions. The receiver filters extracts message using his private key. study, complete assessment robustness, reliability, anti-traceability our protocol, properties regarded desirable channel. We also formalize definition security through transaction distinguishing experiment. A rigorous proof shows that protocol meets use. Finally, detailed comparison existing blockchain-based