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随着计算机技术的发展,信息安全已日益引起人们的高度重视。依据美国CSI及FBI联合发布的《2002度计算机犯罪及安全调查报告》中提供的数据,仅在2001年503家被调查的美国公司因信息安全导致的损失超过38亿美元。如何不断研究和提高信息安全技术已直接关系到社会信息化的发展。可
With the development of computer technology, information security has attracted more and more attention. According to data provided in the 2002 Computer Crimes and Security Survey jointly released by the CSI and FBI in the United States, only 503 U.S. companies surveyed in 2001 alone lost more than $ 3.8 billion in information security. How to continuously study and improve the information security technology has a direct bearing on the development of social informatization. can