摘要： 采用ATM交换机中的BENES网络，提出了一种简洁正确的寻径算法，在可重构密码芯片上实现比特置换功能单元，能够完成N！种N到N的任意比特置换。该方法可以支持新的密码算法，加速分组密码，减少资源占用。

关键词: 比特置换, BENES网络, 可重构

Abstract: This paper proposes a new way of efficiently doing arbitrary N-bit permutations in reconfigurable cryptographic chip with very efficient hardware implementation. The new method is based on the BENES multistage interconnection network which is widely used in ATM switcher. An accurate and compact sorting routing algorithm is also described. This method can support new crypt algorithm, speed up execution, and reduce resource consumption.

Key words: bit permutation, BENES network, reconfigurable

中图分类号: 

• TP309