Design And Implementation Of The Storage Security Of TS Vedio File Of The Locomotive Video Monitoring Recorder

Locomotive video monitoring recorder is widely used in various fields of railway toprotect the safety of people’s lives and property security better. The storage security of Videofile of locomotive video monitoring recorder is of great concern to the user.Invasion of illegalusers, stealing and tampering of video files can effect the storage security of vediofile.Unexpected power cuts can cause damage to the file system during the operation ofLocomotive video monitoring recorder. Aim at solving these issues, the paper makes designand implementation for the storage security of video file of locomotive video monitoringrecorder.Firstly, the paper elaborate the theoretical basis of the storage security of video file oflocomotive video monitoring recorder, such as the main features and modules of locomotivevideo monitoring recorder, the selection principle of the video stream, the encapsulationprinciples of TS stream and the encryption chaos theory of vedio file, the basic principles ofthe linux system under I.MX53processor. Then, the storage security of TS video files aredesigned, not only using user name and password to manage the access and download rightsof USB and WEB form, but also using the general cat map algorithm to encrypt the TS videofiles. Finally, the security of file system where TS video files store in, using the dosfstool torepair file system when the system power on which can protect the security of the file systemeffectively, and also designing the hardware power-down protection circuit consisting ofhardware detection circuit and supercapacitor power-accumulating time-compensationcircuit which can reduce the time of soft recovery.The paper uses different user name and password to test the access and download rightsof TS video files of locomotive video monitoring recorder.According to the test results, onlyusers with the appropriate permissions have the corresponding permissions to do operation,while unauthorized users will be shuted the door upon by the system.The paper uses thecorrect key and the wrong key to test the encrypted TS vedio file by general cat mapalgorithm,which proves that only the right key can restore the encrypted TS video file andwho has the right key can get the content,while the error key can not.The paper does abnormalpower-down repeatedly to test the file system which uses the dual protection stratery andnot,which proves that the dual protection stratery can protect the file system effectively.