Security Systems: A concept through Encrypting File System

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Shruti Jain
Chintal Kumar Patel

Abstract

The need for data security emerges from the widespread deployment of shared file systems, greater mobility of computers
and the rapid miniaturization of storage devices. It is increasingly obvious that the value of data is much more than the value of
underlying devices. The theft of a personal laptop or a thumb drive leaves the victim vulnerable to the risk of identity of theft in
addition to the loss of personal or financial data and intellectual property. An encrypting file system employs secure and efficient
mechanisms to encrypt or decrypt data on-the-fly as it is being written to or read from the underlying disk, to provide a level of data
privacy that goes beyond simple access control. Also, issues, such as trust models, backups and data recovery must be resolved. An
encrypting file system must also be tightly integrated with the operating system for ease of use and flexibility. Although the design of
such system is a well-researched problem, existing implementations still lack the security and usability features that must be present in
a truly scalable system that can be successfully deployed in enterprises. This paper includes study of existing system. It also
represents the conceptualization, design and implementation of a kernel-space encrypting file system that incorporates an
advance key management scheme to provide a high grade of security while remaining transparency and usability.

Keywords: Encrypted File System, Virtual File System (VFS), Access Control List (ACL), File System Key (FSK).

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