Covert channel construction method in block chain network

Abstract

The invention discloses a covert channel construction method in a block chain network, and relates to the technical field of data covert transmission, and the specific steps are as follows: a first terminal and a second terminal share a secret key and transaction information, and generate a block chain network address by using the secret key and a standard public key address generation algorithm; the transaction information comprises an arrangement mapping table and the information capacity of a single transaction; the first terminal sends information by using an information hiding method, and the first terminal and the second terminal carry out transaction recording at the same time; and the first terminal and the second terminal monitor whether there is a transaction of an account of the block chain network address on the block chain, if so, the second terminal extracts information by using an information extraction method, and replies the information by using the information hiding method after the information is extracted. The invention provides a complete covert channel construction method, so that both communication parties can safely transmit information to each other in the covert channel.

Description

technical field [0001] The present invention relates to the technical field of data covert transmission, and more specifically relates to a method for constructing a covert channel in a block chain network. Background technique [0002] There are two main types of data covert communication under network protocols, one is storage-based covert communication with memory function. This method directly or indirectly utilizes the loosely restricted storage space of network devices, and through careful construction, these fields can be used to realize data covert transmission. The second is time-based covert communication with no memory function. This scheme utilizes the time information of the network protocol packet, and the sending parties agree on an algorithm in advance, and achieves the purpose of concealed communication by modulating the time interval of the network packet. This communication does not affect the quality of the communicated data, but may add additional band...

AI Technical Summary

Problems solved by technology

The second is time-based covert communication with no memory

This communication does not affect the quality of the communicated data, but may add additional bandwidth

However, all existing network-based covert communication methods have shortcomings such as being easy to be detected, monitored, and controlled.

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