Software and hardware cooperative Ethernet failure security communication system and data transmission method
A software-hardware coordination and fail-safe technology, applied in the field of computer communication, can solve the problem of high system complexity, and achieve the effect of improving reliability, simple structure and easy implementation.
Active Publication Date: 2009-07-08
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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[0003] In view of this, the present invention is to provide an Ethernet fail-safe communication system and a data transmission method with software and hardware coordination, so as to solve the problem of high system complexity when implementing data security communication in the above-mentioned computer system
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[0040] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.
[0041] see figure 1 , figure 1It is a structural diagram of the system of the present invention, in which the dotted line is the monitoring information, and the solid line is the application data, including: a central processing unit (CPU) A and a central processing unit (CPU) B which are mutually redundant, and are used to realize the application data Processing, two central processing units are installed on the main control board;
[0042] The main control board and the Ethernet communication board perform data interaction. The Ethernet communication board includes mutually redundant application processing units, application processing unit A and application processing unit B; mutually redundant safety function units, safety function units A and safety function unit B; synchr...
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The invention discloses a hardware-software cooperative secure communication system in case of Ethernet network failure, and a data transmission method thereof. The system comprises an application processing unit A and an application processing unit B which are connected with a main control panel and are in mutual redundancy; a security function unit A and a security function unit B which are connected with the application processing units, respectively, and are in mutual redundancy; a synchronous comparing unit for synchronizing and checking double-channel enciphered data; a network protocol encapsulating unit for encapsulating / de-encapsulating standard Ethernet data; a network interface unit for connecting the network protocol encapsulating unit and an IP network; and a security function monitoring unit for monitoring the operation status of other units. During data transmission process, the method conducts data security encryption data integrity checking through an encryption algorithm, and conducts synchronization and check of redundant data through hardware equipment. The system has the advantages of high redundancy, secure and reliable data transmission, simple structure, and easy implementation.
Description
technical field [0001] The invention relates to the technical field of computer communication, in particular to an Ethernet fail-safe communication system and a data transmission method with software and hardware coordination. Background technique [0002] As we all know, in the application fields of special computer systems with high security requirements, such as railways, aviation, aerospace, etc., communication itself is often considered unreliable and unsafe, and special security function modules need to be supplemented to achieve high reliability and security of communication. High safety, and it is required to automatically lead to the safety output state when the equipment fails. Among the existing designs, some designs realize the error detection of the data in the communication by adding a special security check function, but it is impossible to avoid the introduction of errors in the data encryption process due to the sudden failure of the hardware. Other designs...
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IPC IPC(8): H04L12/24H04L29/06H04L1/00
Inventor 杨剑张波车惠军周
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD