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A novel computer architecture to prevent destruction by viruses

Authors
  • Gao, Qingshi1, 2
  • Hu, Yue1, 2
  • Li, Lei2
  • Chen, Xu1
  • Liu, Honglan1
  • 1 University of Science and Technology Beijing, Beijing, 100083, P.R. China , Beijing
  • 2 The Chinese Academy of Sciences, Institute of Computing Technology, Beijing, 100080, P.R. China , Beijing
Type
Published Article
Journal
Journal of Computer Science and Technology
Publisher
Springer-Verlag
Publication Date
May 01, 2002
Volume
17
Issue
3
Pages
241–248
Identifiers
DOI: 10.1007/BF02947303
Source
Springer Nature
Keywords
License
Yellow

Abstract

In today's Internet computing world, illegal activities by crackers pose a serious threat to computer security. It is well known that computer viruses, Trojan horses and other intrusive programs may cause severe and often catastrophic consequences. This paper proposes a novel secure computer architecture based on security-code. Every instruction/data word is added with a security-code denoting its security level. External programs and data are automatically added with security-code by hardware when entering a computer system. Instruction with lower security-code cannot run or process instruction/data with higher security level. Security-code cannot be modified by normal instruction. With minor hardware overhead, the new architecture can effectively protect the main computer system from destruction or theft by intrusive programs such as computer viruses. For most PC systems, it includes an increase of word-length by 1 bit on registers, the memory and the hard disk.

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