Improved Alternatives of Barrel Shifter Used in Reconfigurable Design of Block Cipher Algorithms

摘要：

Reconfigurable design is an important research direction in hardware implementation of cryptographic algorithms. Since shift right logical appears seldom in block cipher algorithms according to our statistics, a new idea of reconfigurable shifter is proposed, that is, rotating left, rotating right, shift left logical 3-in-l barrel shifter. Furthermore, four alternative schemes are presented. Based on optimum synthesis of their Verilog HDL implementations on a FPGA, we obtain that the time and the area is reduced by 19.7％ and 31.9％ than those of classical 4-in-1 scheme respectively and the new schemes are of great practical value.

关键词： barrel shifter reconfigurable computing systems block cipher algorithm cryptography

作者: An Wang Maoning Wang Xianwen Yang Zheng Li

作者单位: Key Lab of Cryptographic Technology and Information Security Ministry of Education Shandong Universi Department of Electronic Technology Information Science and Technology Institute Zhengzhou, China

会议类型: 国际会议

会议名称: 2010 International Conference on Future Information Technology(2010年未来信息技术国际会议 ICFIT 2010)

会议地点: 长沙

会议语种:英文

页码: 63-66

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）