摘要： 针对密码算法用户对于多种对称密钥算法高效可配的使用需求,设计一种新的对称密钥算法硬件架构。根据各密钥算法的特点,分析其运算逻辑并进行拆分,使用基础运算单元可重构方法将各算法实现在同一运算核心模块上,在保证电路时序的情况下,节约电路的整体面积,提高电路的单位面积吞吐率。该架构具有较好的扩展性,便于新对称密钥算法的进一步重构实现。仿真结果表明,该架构在实现同类算法时,电路面积和单位面积吞吐率均优于状态阵列重构、Ｓ盒查找表优化等架构,在实现多种算法时,其面积增加也较少。

关键词: 信息安全, 对称密钥, 基础运算单元, 可重构, 高性能, 嵌入式系统

Abstract: To meet the users’ needs for a variety of algorithms,this paper presents a symmetric key algorithms hardware architecture.It analyzes every algorithms and makes a logic separation,based on the characteristics of each algorithm.It efficiently implements various algorithms in the same operation module by using basic arithmetic unit reconfigurable method.The architecture is easily to extend with a new symmetric key algorithm.Simulation results show that the proposed architecture has a better throughput and uses smaller area than the existing design(cell array reconfigurable architecture,LUT optimized architecture,e.g.) while implementing the same kind of algorithm.To implement more algorithms,it has a very small increasement in the circuit area.

Key words: information security, symmetric key, basic arithmetic unit, reconfigurable, high performance, embedd-ed system

中图分类号: 

• TN30