Detecting virus is the first step,it is one of the key techniques of maintaining systems safety. After describing comprehensive detection method that is composed of comparing method and checking sum method,a kiss virus algorithm is designed. To support comparing method, primitive file is proposed. The 0.5 level ring is proposed based on the privileged regulation of ring protection, and the logical space of storing primitive files and the environment of write operation are given. Additionally, the necessity of setting primitive file and the principles of building primitive file set are discussed,and the protecting way with hardware is described,the logical sketch is given. It attempts to provide a new thinking for the research of network security.%检测病毒是清除病毒的第一步,它是维护系统安全的关键技术之一.在描述了由比较法和校验和法组成的综合检测法后,设计了一种消除病毒的算法.为了支持比较法,提出原始文件概念,在环保护特权规则的基础之上,提出0.5级环方法,并给出了存储原始文件的逻辑空间和写操作的环境.文中还对建立原始文件的必要性、原始文件集的组成原则进行了讨论,并描述了原始文件的硬件保护方法,且给出了逻辑示意图.文中试图为网络安全提供一种新的研究思路.
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