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A secure communication method based on terminal 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, and digital transmission system, etc. question

Active Publication Date: 2021-04-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • A secure communication method based on terminal information extension sequence and m-sequence
  • A secure communication method based on terminal 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 a terminal information extension sequence and an m-sequence. The method introduces an m-sequence in the process of loading the communication content Msg to the terminal information expansion sequence by a client, and realizes the communication content Msg through a data modulation algorithm. m-sequence modulation, so as to improve the poor pseudo-randomness of the existing terminal information extension sequence and improve its anti-analysis ability. On the server side, the synchronously generated m-sequence is used to demodulate the terminal information extension sequence, thereby recovering the client communication content Msg. In the modulation process, the present invention uses the data framing algorithm to preprocess the communication content Msg, and the server side uses the reverse algorithm of the data framing algorithm to analyze the terminal information expansion sequence, so that a higher content accuracy rate can be obtained on the server side . The invention can effectively improve the pseudo-randomness and anti-noise interference capability of the terminal information expansion sequence, so that the secure communication based on the terminal information expansion sequence is better applicable to the 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 Patents(China)
IPC IPC(8): H04B1/707H04B1/7097H04L1/00H04L29/06
CPCH04B1/707H04B1/7097H04L1/0008H04L63/0428
Inventor 石乐义兰茹段鹏飞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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