Hardware Implementation of a Reconfigurable S-box Based on AES and DES Algorithm
The reconfiguration can improve not only the security but also the adaptability of the cipher chip.S-boxes are important components.In many cryptographic algorithms, its reconfiguration has great influence on the reconfiguration of the cipher chip.In this paper,the hardware implementation of the S-boxes of AES and DES algorithm is analyzed,and the structure and the implementation of a reconfigurable S-box (RC-S) are given.The result of the RC-S experiment proves that the RC-S can be used in the hardware implementation of AES and DES algorithm.The size of the AES/DES cipher module based on RC-S is 81%and113% of the AES and DES cipher chip respectively,and the performance is 79%and94% of the AES/DES cipher chip respectively.