A concealed communication method in a block chain network environment

Abstract

The invention relates to a concealed communication method in a block chain network environment. The original concealed information is encoded by using a predetermined source encoding or channel encoding mechanism. The encoded information is modulated with the time interval of the information by a predetermined modulation method in advance to generate a time interval sequence of normal informationtransmission to be sent to a block chain network, and each information of the time interval sequence of the normal information transmission is timestamped by a block chain mechanism. By using the P2Pnetwork transmission mechanism and the distributed chain storage mechanism under the block chain network environment, the time interval sequence of the normal information is transmitted and stored with high reliability. By observing the block chain network, the receiver of the concealed information obtains the time interval sequence of the normal information transmission sent by the sender, and the acquired information in a manner of information time interval is demodulated to obtain demodulated information; the demodulated information is decoded.

Description

technical field [0001] The invention belongs to the technical field of network security, and relates to a covert communication method in a block chain network environment, which realizes covert transmission of confidential information. Background technique [0002] With the development of network technology, the security of network information communication has been paid more and more attention. On the one hand, malicious information (such as Trojan horse programs, viruses, network attacks, etc.) needs to be blocked and detected; on the other hand, the security and privacy of normal communication information (such as: commercial information, personal privacy information, etc.) Protect. Network covert channel can be applied in two aspects of network information communication security, so it is getting more and more attention. [0003] The network covert channel is defined as the communication channel that violates the communication restriction rules for covert information t...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the existing drawbacks of network covert channels, the present invention provides a covert communication method under the blockchain network environment, which overcomes the defects existing in the existing network covert channels, uses the time stamp mechanism of the blockchain network as a transmission reliability verification benchmark, and utilizes The peer-to-peer network transmission mechanism of the blockchain network realizes the reliable communication of multiple transmission lines to overcome the disadvantages of a single static transmission line, and uses the distributed chain storage mechanism of the blockchain network to store the transmission information in a distributed manner to prevent information from being transmitted during transmission. and tampered after transmission, thus achieving high-reliability covert communication

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