Unlock instant, AI-driven research and patent intelligence for your innovation.

Interface implementation method based on secure coding and railway signal safety protocol rssp-ii

A technology of secure coding and secure protocol, applied in the field of communication interface implementation

Active Publication Date: 2020-09-18
CASCO SIGNAL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the limitations of secure coding techniques, only the main logic part can be securely coded

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Interface implementation method based on secure coding and railway signal safety protocol rssp-ii
  • Interface implementation method based on secure coding and railway signal safety protocol rssp-ii
  • Interface implementation method based on secure coding and railway signal safety protocol rssp-ii

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] Such as figure 1 As shown, the same program runs independently on each CPU, including the main logic part and the RSSP2 protocol communication layer after security coding; the two CPUs form a dual channel, and the dual channels exchange information through DPRAM; the main logic part and the RSSP2 communication layer The receiving conversion module interface and the sending conversion module interface provided by the present invention;

[0055] Such as figure 2 Shown, the RSSP-II communication layer of the present invention is to the receiving conversion module work flow diagram of safe encoding program, and is described in detail as follows:

[0056] Step 101: Initialize the received message security code variable, assuming that the receiving module variable is x, the corresponding security code variable is initialized as follows:

[0057] x H =0

[0058] x L =0

[0059] Step 102: Use the RSSP-II protocol to receive messages; specifically, the two channels indepe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a secure coding and railway signal security protocol (RSSP-II)-based interface realization method. The method comprises the steps of receiving information from an RSSP-II communication layer, then converting the received information into information comprising coding information, dual-channel verification information and random error detection information by a receiving conversion module, wherein the information is involved in program operation of secure coding; and generating sent information in a program of secure coding, adding dual-channel verification informationand dual-channel random error detection information to MAC information of the sent information through a sending conversion module, then framing the MAC information with high bit coding information ofthe sent information to be sent out. Compared with the prior art, the method provides a detection mechanism for random errors generated in a process from receiving the information by the RSSP2-II communication layer to using the information by the coding program, and provides a detection mechanism for random errors generated in a process from generating information by the coding program to calculating an information verification code by an RSSP-II protocol layer, thereby making the interface safer.

Description

technical field [0001] The invention relates to a method for realizing a communication interface in the field of rail transit signals, in particular to a method for realizing an interface based on safety coding and railway signal security protocol RSSP-II. Background technique [0002] In the interconnected urban rail transit signal system, it is required to use the railway signal safety protocol RSSP-II for communication between subsystems (including on-board systems and trackside systems) in an open network environment. This protocol meets the requirements proposed in EN50159-2 It is required that the seven security communication risks (specifically, duplication, deletion, insertion, reordering, damage, masquerading, and delay) existing in an open network environment can be effectively protected. [0003] The functions of the rail transit signal system mainly include the automatic driving and automatic protection of the train. In order to meet the SIL4 safety standard, its...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06
CPCH04L1/0009H04L1/0047H04L1/0061H04L1/0091H04L63/12H04L69/06
Inventor 方兴张洁黄邢陈张磊蒋建金
Owner CASCO SIGNAL