区块链环境下的新型网络隐蔽信道模型研究

Research on a new network covert channel model in blockchain environment

区块链是随着数字货币商品兴起的去中心化基础架构,具有安全可信、顽健性高等特点。首次提出区块链环境下的网络隐蔽信道模型,具有抗干扰性、抗篡改性、多线路通信性、接收方匿名性、线路无关性,可以克服现有网络环境下的隐蔽信道特性缺陷等弊端。首先提出了区块链网络隐蔽信道模型,用形式化方法建模并证明了抗干扰性和抗篡改性;其次构建了基于业务操作时间间隔的区块链网络隐蔽信道的场景;最后提出了包含抗检测性、顽健性、传输效率的区块链网络隐蔽信道评估向量,为基于区块链环境的新型网络隐蔽信道的实用化奠定了理论基础。

Blockchain is a decentralized architecture emerging with cryptocurrencies, which is credible and robust. A network covert channel model in blockchain environment was proposed for the first time, which was anti-interference, anti-tamper modification, multi-line communication, receiver anonymity and line independence. The shortcomings of network covert channel in existing network environment could be tackled by the new type of network covert channel, such as characteristic defect. etc. Firstly, A network covert channel model in blockchain environment was presented by formal method, its anti-interference and anti-tamper modification was proved. Then, a blockchain network covert channel scenario using service operation interval time was presented. Finally, the undetectability, robustness and rate of the blockchain network covert channel evaluation vectors was proposed. A theoretical foundation was laid for the practicality of the new type of network covert channel in blockchain.