LFSR加密新算法的研究与FPGA实现  

Improved LFSR cryptographic algorithm and FPGA implementation

作　　者：梁伟[1] 徐建波[1] 唐明董[1,2] 刘辉亚[1] 

机构地区：[1]湖南科技大学计算机科学与工程学院,湖南湘潭411201 [2]中国科学院计算技术研究所,北京100080

出　　处：《计算机工程与应用》2009年第16期80-82,179,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(No.60673061);湖南省自然科学基金(No.02JJY5006);湖南省教育厅资助科研项目(No.05c182)~~

摘　　要：提出了一种改进的线性反馈移位寄存器结构的安全加密模型,利用移位寄存器的灵活性高和成本低的特点结合FPGA器件的高速度和可重构的性能,从而使系统达到低成本、可实时配置算法文件和重组安全策略的目的,并详细论述了该模型的改进后的线性反馈移位寄存器加密算法的加密原理,然后介绍了该算法的FPGA实现及可重构技术,最后,通过对改进算法的加密时序图的分析和总体性能的评估,证明了该算法在保证安全性能的基础上具有很好的成本优势和可重构性。This paper presents a new security encryption model based combines the high flexibility and low cost of the shift register and performance of FPGA,thereby allowing the system to achieve the reorganization of security policy document.This paper elaborates on the algorithm encryption theory,and then introduces the FPGA algorithms on improved LFSR（Linear Feedback Shift Register）,whieh the characteristics of the high-speed and reconfigurable purpose of low-cost,real-time allocation algorithm and model of improved linear feedback shift register encryption and Reconstructable technologies.Finally,with the diagram analysis about the encryption and the valuation of total function,it is proved the arithmetic has good cost advantage and reconfiguration ability as safe is assured.

关 键 词：加密模型 线性反馈移位寄存器 现场可编程门阵列 可重构 

分 类 号：TP33[自动化与计算机技术—计算机系统结构]