File Security based on Pretty Good Privacy (PGP) Concept

摘要

Most computer systems are currently being integrated into networks. The purpose of integrating a computer system into a network is to make it more effective and easy to access. Various data and information are usually stored within a file in a server of this integrated computer network system. On the other hand, the data, information and file stored in a server might have the potential of being violated by intruders. The concept of Pretty Good Privacy (PGP) can relatively deal with the issues of computer security and to date, is still being used for applications such as electronic mails. Thus, in this study, the PGP concept was applied to enhance the security level for a digital file associated with a common text. This paper views the concept of PGP in general. The methodology used for applying the PGP concept as the security program for a digital file was explained. The changes on the digital file content for each changing processes of cryptography and compression were presented as the results in this paper.