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LoRa communication encryption system based on chaotic sequence and implementation method thereof

A chaotic sequence and encryption system technology, applied in the direction of secure communication, transmission system, wireless communication through chaotic signals, can solve the problems of being unable to resist malicious congestion attacks, retransmission attacks, etc., and achieve the effect of improving security

Active Publication Date: 2019-09-24
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a LoRa communication encryption system based on chaotic sequences in order to overcome the technical defects that existing LoRa networks cannot resist malicious congestion attacks and retransmission attacks

Method used

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  • LoRa communication encryption system based on chaotic sequence and implementation method thereof
  • LoRa communication encryption system based on chaotic sequence and implementation method thereof
  • LoRa communication encryption system based on chaotic sequence and implementation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] like figure 1 Shown, based on the LoRa communication encryption system of chaotic sequence, comprise sending end 1 and receiving end 2, described sending end 1 comprises data generation module 11, chaotic sequence generator, encryption module 12 and first wireless communication module 13; The receiving end 2 includes a second wireless communication module 21, a decryption module 22 and a data processing module 23; wherein:

[0068] Described data generation module 11, chaotic sequence generator are all connected with described encryption module 12 input ends;

[0069] The output end of the encryption module 12 is connected to the first wireless communication module 13;

[0070] The first wireless communication module 13 is wirelessly connected to the second wireless communication module 21;

[0071] The second wireless communication module 21 is connected to the input end of the decryption module 22;

[0072] The output end of the decryption module 22 is connected to...

Embodiment 2

[0097] More specifically, on the basis of Example 1, such as Figure 5 Shown, the realization method of the LoRa communication encryption system based on chaotic sequence comprises the following steps:

[0098] S1: generate raw data;

[0099] S2: Encrypt and send the original data;

[0100] S3: Receive the encrypted data and decrypt it to obtain the original data;

[0101] S4: Process the original data.

[0102] More specifically, in the step S1, the original data is generated by the data generation module 11 .

[0103] More specifically, such as Figure 6 As shown, the step S2 specifically includes the following steps:

[0104] S21: the chaotic sequence generated by the chaotic sequence generator generates the first key and the second key, and the chaotic sequence and the original data realize chaotic interleaving in the chaotic interleaving unit 121;

[0105] S22: cutting and grouping the chaotically interleaved data in the data cutting and grouping unit 122;

[0106]...

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Abstract

An LoRa communication encryption system based on a chaotic sequence provided by the invention comprises a sending end and a receiving end, the sending end comprises a data generation module, a chaotic sequence generator, an encryption module and a first wireless communication module, and the receiving end comprises a second wireless communication module, a decryption module and a data processing module. The data generation module and the chaotic sequence generator are both connected with the input end of the encryption module, the output end of the encryption module is connected with the first wireless communication module, and the first wireless communication module is in wireless communication connection with the second wireless communication module; the second wireless communication module is connected with the input end of the decryption module, and the output end of the decryption module is connected with the data processing module. According to the LoRa communication encryption system based on the chaotic sequence and the implementation method of the LoRa communication encryption system based on the chaotic sequence, the pseudo-random characteristic of the chaotic sequence is fully utilized, a malicious attacker is difficult to detect a transmission signal, even if the signal is detected, the malicious attacker is difficult to decode to obtain the original data, so that the safety of the system is effectively improved.

Description

technical field [0001] The present invention relates to the technical field of Internet of Things wireless communication, more specifically, relates to a LoRa communication encryption system based on chaotic sequences, and also relates to an implementation method of the system. Background technique [0002] With the rapid development of the Internet of Things, wireless communication technology has also been able to develop step by step, and now there are many low-power consumption wide area networks ( LPWAN). Among them, LoRa technology stands out from it and has been recognized by the Internet of Things industry. [0003] The birth of LoRa was earlier than NB-IoT. In August 2013, Semtech released a new type of chip based on ultra-long-distance low-power data transmission technology below 1GHz to the industry. Its receiving sensitivity has reached -148dbm. Compared with other advanced sub-GHz chips in the industry, the highest receiving sensitivity has been improved by mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04W12/02H04B1/7136H04J13/00
CPCH04B1/7136H04J13/0018H04L9/001H04L2209/80H04W12/02H04W12/03
Inventor 方富荣张琳马伟彬
Owner SUN YAT SEN UNIV