Secure communication method based on end information extension sequence and m sequence

Abstract

The invention relates to a secure communication method based on an end information extension sequence and an m sequence. According to the method, an m sequence is introduced in the process of loadingcommunication content Msg to an end information extension sequence by a client, and modulation of the m sequence by the communication content Msg is realized through a data modulation algorithm, so that the characteristic of poor pseudo-randomness of the existing end information extension sequence is improved, and the anti-analysis capability of the existing end information extension sequence is improved. The end information extension sequence is demodulated by using the m sequence generated synchronously at the server end so as to recover the communication content Msg of the client. In the modulation process, a data framing algorithm is used for preprocessing the communication content Msg, a server side uses a reverse algorithm of the data framing algorithm to analyze a side information extension sequence, and therefore high content accuracy can be obtained at the server side. According to the invention, the pseudo-randomness and anti-noise interference capability of the end information extension sequence can be effectively improved, so that the secure communication based on the end information extension sequence is better suitable for a complex network environment.

Description

technical field [0001] The invention relates to a secure communication method based on a terminal information extension sequence and an m-sequence, aims at realizing secure communication between a client and a server in a complex network environment, and belongs to the technical field of network security. Background technique [0002] Terminal information expansion refers to the conversion of communication content or legal identity information through the terminal information expansion algorithm, and a piece of information is represented by a sequence of multiple terminal information, and each terminal information has nothing to do with the transmitted information itself. The sender converts the communication content or legal identity authentication information through the terminal information expansion algorithm, hides the communication content or legal identity authentication information in the terminal information expansion sequence and sends it to the network, and the rec...

AI Technical Summary

Problems solved by technology

However, the security communication efficiency of the terminal information expansion sequence generated by the existing terminal information expansion sequence generation algorithm is low, the pseudo-randomness is poor, and the anti-analysis ability is weak.

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