An Adaptive Technique to Implement Disk Security

摘要

Security of information is an issue that has been taken into consideration from many years ago. For the computer systems, this concept has gained further importance. The trusted computing, in its wider sense, comes under this concept. A group of big software and hardware companies working in Information Technology field known as Trusted Computing Group(TCG).TCG are engaged in designing and making standards of various parts of trusted computer systems including applications, PCs, networks, cryptography modules and so on [1]. The topic which has gained the attention of the said group is secure computer startup. As these days the computer systems use layered and modular architecture and execute the instruction in a number of different phases, it is imperative to establish a trusted chain between the layers. The secure startup of the computer means that we make sure of the integrity of the each layer before its loading. Consequently, when the system is booted we would be certain that there exist no malicious code in it, or its data have not been tempered by unauthorized persons. There are various methods for achieving this objective. This paper discusses importance of Information security, full disk encryption(FDE) and various techniques to implement FDE. The paper proposes a technique DiskTrust. DiskTust technique is a robust way to implement hard disk encryption in cost effective manner.