Research and Design of File Systems for Secure Storage

With the development of information technology,the application of computer has penetrated into every aspect of society.Followed with security problems of information technology,the data privacy is the core of these security problems.In this paper,firstly,the file systems of common operating system is analyzed,issuing the principles of file storage,file deletion,file recovery and file anti-recovery.Secondly,the algorithms of data secure storage are studied and analyzed,which are used for file slice,file compress,and file encryption.At last,a simulated file system is designed and developed which provides secure data storage including file encryption to ensure files untouchable without encryption keys,and unable to recover files after deletion.