CN210327601U

CN210327601U - Water conservancy thing networking encryption and decryption device based on serial port communication

Info

Publication number: CN210327601U
Application number: CN201921506179.2U
Authority: CN
Inventors: 黄静; 徐志成; 齐传兵; 周方; 朱光辉
Original assignee: Wuxi Aerospace Jiangnan Data System Technology Co ltd
Current assignee: Wuxi Aerospace Jiangnan Data System Technology Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-04-14
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a water conservancy thing networking encryption and decryption device based on serial port communication, including shell and encryption mainboard, the encryption mainboard sets up in the shell, the encryption mainboard is including the data communication interface A, aviation socket, serial communication module SP3485, cryptographic algorithm chip ACH512, serial communication module SP3485, aviation socket and the data communication interface B that connect gradually, cryptographic algorithm chip ACH512 includes key management unit, data encryption unit, data decryption unit, UART1 input FIFO, UART1 output FIFO, UART2 input FIFO and UART2 output FIFO. The utility model discloses can encrypt the data of water conservancy perception equipment and well accuse machine and then transmit with the gateway, and the utility model discloses a serial ports communication carries out the data butt joint, need not to carry out big change to current equipment and circuit, and installation cost is lower.

Description

Water conservancy thing networking encryption and decryption device based on serial port communication

The technical field is as follows:

the utility model belongs to the technical field of the water conservancy thing networking, in particular to water conservancy thing networking encryption and decryption device based on serial port communication.

Background art:

in recent years, the national department of water conservancy has implemented a series of water conservancy information-based construction strategies successively. Nowadays, the water conservancy informatization construction of China is developing at a rapid speed. With the development of the internet of things technology, the water conservancy internet of things sensing equipment is widely applied to scenes such as hydrologic data monitoring and signal acquisition, equipment operation and management, water resource scheduling and the like, water conservancy sensing basic information is rapidly transmitted and effectively processed, and water conservancy informatization construction makes great progress and development.

The existing water conservancy Internet of things sensing terminals are large in number, are dispersedly arranged on each physical node of a water conservancy system, the nodes are generally connected with an upper computer through RS-232 lines, RS-485 lines and the like, and a communication protocol mainly adopts a Modbus protocol. Because the line and the Modbus protocol do not have protection mechanisms such as identity authentication, data encryption, integrity verification and the like, the communication line between the sensing terminal and the upper computer is easily attacked by data stealing, counterfeiting, replaying and the like. Meanwhile, the number of the built systems is large, the system reconstruction cost is high, and the safety reconstruction can not be completed through the system reconstruction. Therefore, it is necessary to enhance the system security and ensure the security of the end of the water conservancy information system by low-cost modification measures under the condition of using the existing equipment and lines as much as possible.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

The utility model has the following contents:

an object of the utility model is to provide a water conservancy thing networking encryption and decryption device based on serial communication to overcome the defect among the above-mentioned prior art.

In order to achieve the above object, the utility model adopts the following technical scheme:

a water conservancy Internet of things encryption and decryption device based on serial port communication comprises a shell and an encryption mainboard, wherein the encryption mainboard is arranged in the shell and comprises a data communication interface A, an aviation socket, a serial port communication module SP3485, a cryptographic algorithm chip ACH512, a serial port communication module SP3485, an aviation socket and a data communication interface B which are sequentially connected, the cryptographic algorithm chip ACH512 comprises a key management unit, a data encryption unit, a data decryption unit, a UART1 input FIFO, a UART1 output FIFO, a UART2 input FIFO and a UART2 output FIFO, the UART1 input FIFO and the UART1 output FIFO are connected with the serial port communication module SP3485 at the side close to the data communication interface A, the UART2 input FIFO and the UART2 output FIFO are connected with the serial port communication module SP3485 at the side close to the data communication interface B, the data encryption unit is arranged between the UART1 input FIFO and the 2 output FIFO, and the data decryption unit is arranged between the UART1 output FIFO and the UART2 input FIFO, the key management unit is disposed between the data encryption unit and the data decryption unit.

The transmission rate of the serial port communication module SP3485 is 10 Mbps.

The encryption mainboard is also connected with a power supply for supplying power, an isolation module is arranged between the power supply and the encryption mainboard, and the isolation module is used for isolating and transforming the power supply.

The cryptographic algorithm chip ACH512 adopts a domestic 32-bit SoC security chip ACH 512.

The shell adopts a waterproof plastic shell.

Adopt the technical scheme of the utility model an aspect has following beneficial effect:

the utility model discloses add cryptographic algorithm chip ACH512 and realize the encryption and decryption to communication data on encrypting the mainboard to adopt serial ports communication module SP3485 to carry out the data butt joint, can directly concatenate this encryption and decryption device between the gateway of thing networking perception equipment and well accuse host computer in water, need not to carry out big change to existing equipment and circuit.

Description of the drawings:

fig. 1 is a schematic diagram of an encryption main board of a serial port communication-based water conservancy internet of things encryption and decryption device of the present invention;

fig. 2 is an application schematic diagram of a water conservancy internet of things encryption and decryption device based on serial port communication of the utility model;

reference numerals: the system comprises a water conservancy sensing device 1, a water conservancy sensing device 2, an encryption and decryption device 3, a main control computer 4, a PLC controller 4 and a gateway 5.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1, a water conservancy internet of things encryption and decryption device based on serial port communication comprises a housing and an encryption mainboard, wherein the encryption mainboard is arranged in the housing, the encryption mainboard comprises a data communication interface a, an aviation socket, a serial port communication module SP3485, a cryptographic algorithm chip ACH512, a serial port communication module SP3485, an aviation socket and a data communication interface B which are connected in sequence, the cryptographic algorithm chip ACH512 comprises a key management unit, a data encryption unit, a data decryption unit, a UART1 input FIFO, a UART1 output FIFO, a UART2 input FIFO and a UART2 output FIFO, the UART1 input FIFO and UART1 output FIFO are connected with the serial port communication module SP3485 on the side of the data communication interface a, the UART2 input FIFO and UART2 output FIFO are connected with the serial port communication module SP3485 on the side of the data communication interface B, the data encryption unit is arranged between the UART 67 1 input FIFO and the 2 output FIFO, the data decryption unit is arranged between the UART1 output FIFO and the UART2 FIFO, the key management unit is disposed between the data encryption unit and the data decryption unit.

The shell adopts a waterproof plastic shell.

During implementation, as shown in fig. 2, each water conservancy sensing device 1 (i.e. a sensor) is connected with one encryption and decryption device 2 of the present invention, the main control computer 3 is connected with one PLC controller 4, the PLC controller 4 is connected with one encryption and decryption device 2, wherein the data communication interface a of the encryption and decryption device 2 is connected with the water conservancy sensing device 1 and the PLC controller 4 for receiving and sending plaintext commands and data, and the data communication interface B of the encryption and decryption device 2 is externally connected with the gateway 5 for receiving and sending ciphertext data; the data communication interface B is used for externally connecting the gateway 5 to output the encrypted plaintext data received by the data communication interface A through the data encryption unit, and the data input by the gateway 5 is decrypted by the data decryption unit and then output to the water conservancy sensing equipment 1 or the PLC 4 through the data communication interface A.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a water conservancy thing networking encryption decryption device based on serial port communication, includes the shell and encrypts the mainboard, encrypt the mainboard setting in the shell, its characterized in that: the encryption mainboard comprises a data communication interface A, an aviation socket, a serial communication module SP3485, a cryptographic algorithm chip ACH512, a serial communication module SP3485, an aviation socket and a data communication interface B which are sequentially connected, wherein the cryptographic algorithm chip ACH512 comprises a key management unit, a data encryption unit, a data decryption unit, a UART1 input FIFO, a UART1 output FIFO, a UART2 input FIFO and a UART2 output FIFO, the UART1 input FIFO and the UART1 output FIFO are connected with the serial communication module SP3485 on the side of the data communication interface A, the UART2 input FIFO and the UART2 output FIFO are connected with the serial communication module SP3485 on the side of the data communication interface B, the UART data encryption unit is arranged between the UART1 input FIFO and the UART2 output FIFO, the data decryption unit is arranged between the UART1 output FIFO and the UART2 input FIFO, and the key management unit is arranged between the data encryption unit and the data decryption unit.

2. The water conservancy thing networking encryption and decryption device based on serial communication of claim 1, characterized in that: the transmission rate of the serial port communication module SP3485 is 10 Mbps.

3. The water conservancy thing networking encryption and decryption device based on serial communication of claim 1, characterized in that: the encryption mainboard is also connected with a power supply for supplying power, an isolation module is arranged between the power supply and the encryption mainboard, and the isolation module is used for isolating and transforming the power supply.

4. The water conservancy thing networking encryption and decryption device based on serial communication of claim 1, characterized in that: the cryptographic algorithm chip ACH512 adopts a domestic 32-bit SoC security chip ACH 512.

5. The water conservancy thing networking encryption and decryption device based on serial communication of claim 1, characterized in that: the shell adopts a waterproof plastic shell.