基于FPGA及Nios软核处理器的硬盘加密卡设计

【作者】 张宇；

【导师】 陈利学；

【作者基本信息】 西南石油学院 ， 计算机应用技术， 2004， 硕士

【摘要】 信息社会的到来，给全球带来了信息技术飞速发展的契机。计算机技术和个人PC的应用引起了人们生产方式、生活方式和思想观念的巨大变化，极大地推动了人类社会的发展和人类文明的进步。 然而人们在享受快捷信息系统带来的巨大利益的同时，也面临信息安全的严峻考验。因为信息安全不仅关系到个人的隐私能否得以保障，甚至关系到国家的安全和利益，所以保障信息系统的安全已经作为一项重要的课题受到越来越多的人的重视。 硬盘加密卡研究是针对硬盘中的数据安全而提出的。本文重点介绍了IDE硬盘接口的工作原理、协议、读写时序以及DES加密算法实现方法，分析了算法的安全性。在此基础之上，进行了如下研究工作： (1)提出了硬盘加密卡的总体设计方案，并且对设计部件进行了仿真实现和性能分析。 (2)完成了硬盘加密卡的接口设计，能够同时满足IDE硬盘接口时序以及DES加密模块的数据输入／输出要求。 (3)在深入研究DES加密算法的基础上，对DES算法进行了FPGA实现并且对设计进行了相应的优化。更多还原

【Abstract】 The arrival of information society, has bought the opportunity that the information technology develops at full speed in the whole word. The application of the technology of the computer and personal PC has caused the enormous changes of the modes of production, life style and concept of people. The great one has pushed forward the advance of development of the human society and human civilization.However, people while enjoy enormous benefit that the information system brings, face information safe severe test too. Because the security of information is not only concern the personal secret, but also even concern the security and interests of the country, So ensuring the security of the information system has received more and more persons’ attention and becomes an important subject.The research of the hard disk encrypting device is in order to ensure the security of computer users’information. This paper introduce IDE hard disk interface operation principle, protocol, read & write time seqnence and DES encrypt algorithms, especially analysed the security of the algorithm. Summing up, this paper has mainly carried on the research work shows as follwing:(1) On the foundation of the theoretical research, i proposed the design of the hard disk encrypting device as a whole. And emulated and analysed the design component.(2) Finished the interface design of the hard disk encrypting device, made it satisfyed the time seqnence of IDE-interface and in /export request of the DES module.(3) Realized DES algorithm with the FPGA chip.更多还原