Computer Architecture and Systems
• Articles •
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.
GAO Qingshi（高庆狮），HU Yue（胡月），LI Lei（李磊），CHEN Xu（陈绪）. A Novel Computer Architecture to Prevent Destruction by Viruses[J]., 2002, 17(3): 0-0.
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