分组密码算法的可重构设计模型与结构分析

Reconstructure Design Model and Structure Analysis for Block Cipher Algorithm

针对在一种密码芯片上实现多种分组密码算法的要求,提出了基于可重构设计方案。重点研究了可重构设计模型,以及重构模型中的网络互联结构的设计。通过对比分析给出了适合于多种密码算法实现的具有高效可重构设计模型和互联结构。由对比性实验测试表明:设计的重构模型和结构,在实现四种分组密码算法时使用的资源数比实现单一一种密码算法最多增加了20%;实现的性能比单一一种密码算法的性能至多低15%。相对于同时在一个芯片上实现四种分组密码算法的设计方案,可重构模型总体的性价比优势非常明显。

This paper proposes a reconstructure design model according to the requirements which ask for realizing the multiple block cipher algorithm on a single cipher chip. Reconstructure design model as well as the network interconnection structure design in the model is focused on. By contrastive analysis, the design model and interconnection structure featured in highly efficient reconstructure are given. The contrastive test shows that the model increases by 20% sources at most in realizing the four kinds of block ciphers when compared with realizing the single one, and the performance it can reach is 15% lower at most than the single cryptographic algorithm. As a result, the overall performance - price ratio of reconstructure design is obviously superior to that of adopting four kinds of block ciphers on a single chip at the same time.