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A data dynamic encryption communication method and system based on two-wire communication

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

Active Publication Date: 2022-03-18
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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  • A data dynamic encryption communication method and system based on two-wire communication
  • A data dynamic encryption communication method and system based on two-wire communication
  • A data dynamic encryption communication method and system based on two-wire 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] like 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 dyna...

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PUM

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Abstract

The invention discloses a data dynamic encryption communication method based on two-wire communication, which includes encrypted data transmission of master node equipment and data reception and response of slave node equipment. Encrypt, and then send a random dynamic key, and use the random dynamic key to encrypt the data twice and send it in reverse order. After sending, wait for the reply; the process of receiving and responding from the node device data is: when there is a dynamic random key signal on the bus Detect and store, then receive the encrypted data, use the dynamic random key to decrypt the encrypted data and perform reverse processing, and finally use the fixed encryption method to decrypt the original data, and generate encrypted reply data and send it to the bus. The invention realizes the dynamic encryption of the data of the two buses or the DC carrier, effectively prevents the communication data from being intercepted by the external communication and the violent attack from the outside, and ensures the security of the data transmission.

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 Patents(China)
IPC IPC(8): H04L9/40H04L9/08
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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