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Data dynamic encryption communication method and system based on two-wire system communication

A technology of data dynamic and encrypted communication, applied in the field of communication, can solve the problem of being susceptible to external interception and interference, and achieve the effect of preventing external communication interception and ensuring security.

Active Publication Date: 2020-03-31
WUHAN WUTOS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a dynamic data encryption method based on two-wire communication and

Method used

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  • Data dynamic encryption communication method and system based on two-wire system communication
  • Data dynamic encryption communication method and system based on two-wire system communication
  • Data dynamic encryption communication method and system based on two-wire system communication

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] Such as figure 1 As shown, the present invention provides a data dynamic encryption communication method based on two-wire communication, including:

[0050] The encrypted data sent by the master node device includes the following steps:

[0051] S1. The master node device is in the state of waiting to send data. If there is data, use the fixed encryption method to encrypt the data to be sent to generate fixed encrypted data;

[0052] S2. Send a low level of ms level, then maintain a high level of dynamic duration, and then send a low level of ms level to complete the transmission of the d...

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Abstract

The invention discloses a data dynamic encryption communication method based on two-wire system communication. The method comprises main node equipment data encryption sending and slave node equipmentdata receiving and responding, and the main node equipment data encryption sending process comprises the steps that to-be-sent data is encrypted in a fixed encryption mode, then a random dynamic secret key is sent, secondary encryption is conducted on the data through the random dynamic secret key, reverse order sending is conducted, and reply is waited after sending is completed; data receivingand responding processes of the slave node equipment are as follows: when a dynamic random key signal exists on a bus, detecting and storing the dynamic random key signal, then receiving encrypted data, decrypting the encrypted data by utilizing a dynamic random key, then performing reverse processing, finally decrypting by adopting a fixed encryption mode to obtain original data, generating encrypted reply data, and sending the encrypted reply data to the bus. According to the invention, dynamic encryption of two-bus or direct-current carrier data is realized, communication data is effectively prevented from being intercepted by external communication and violently attacked by the outside, and the security of data transmission is ensured.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a data dynamic encryption communication method based on two-wire communication. Background technique [0002] Compared with the four-wire system (two power supply lines and two communication lines), the two-wire system combines the power supply line and the signal line into one, realizing the technology of sharing a single bus for signal and power supply (communication and power supply). All communication nodes (slave devices) take power from the communication master node (master device) and perform data communication with the master node through these two wires. The main representative technologies of two-wire communication include two-wire bus, DC carrier and so on. [0003] The two-wire system saves construction and cable costs, and brings great convenience to on-site construction and later maintenance. Widely used in fire protection, instrumentation, sensors, industri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0478H04L63/1441
Inventor 罗显庭周扬欧涛涛张金平杨刘阳靖静
Owner WUHAN WUTOS
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