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

A technology of information expansion and secure communication, which is applied in the direction of transmission modification based on link quality, adjustment of transmission mode, digital transmission system, etc., and can solve the problem of low security communication efficiency of terminal information expansion sequence, weak anti-analysis ability, poor pseudo-randomness, etc. problems, to achieve the effect of improving anti-noise interference ability, high information transmission rate, and high content accuracy

Active Publication Date: 2020-08-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Description
  • Claims
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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.

Method used

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

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Embodiment Construction

[0019] In order to make the purpose, technology and advantages of the present invention clearer, the present invention will be further described in detail and completely below in conjunction with the accompanying drawings.

[0020] Step (1): The client uses the m-sequence generator to generate the binary m-sequence Bin_m_Seq.

[0021] In the step (1), the client uses the m-sequence generator to generate the binary m-sequence Bin_m_Seq, and needs to input an initial sequence with a length of 13 bits. The present invention uses a 13-level linear feedback shift register to generate m sequences, and the primitive polynomial is x 13 +x 4 +x 3 +x+1.

[0022] Step (2): Framing the Bin_m_Seq generated in (1) to obtain m_Seq_List.

[0023] Step (3): Perform data frame processing on the input communication content Msg to obtain Msg_Bin_List.

[0024] In the step (3), the communication content Msg is subjected to data frame processing, and the frame length of the frame should be con...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/7097H04L1/00H04L29/06
CPCH04B1/707H04B1/7097H04L1/0008H04L63/0428
Inventor 石乐义段鹏飞兰茹宋煜枭侯博文刘祎豪马荣徐兴华
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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