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所属单位：电子信息工程学院

发表刊物：JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS

关键字：Optimization composite field arithmetic (CFA) masked S-box advanced encryption standard (AES)

摘要：As the only nonlinear operation, masked S-box is the core to resist differential power attack (DPA) for advanced encryption standard (AES) cipher chips. In order to suit for the resource-constrained applications, a compact masked S-box based on composite field is proposed in this paper. Firstly, the architecture of masked S-box is designed with composite field masking method. Secondly, four masked S-boxes based on GF ((2(4))(2)), which are based on four basis methods with the optimal coefficient and the corresponding optimal root, are implemented and optimized by the delay-aware common subexpression elimination (DACSE) algorithm. Finally, experimental results show that, while maintaining the DPA-resistance performance, our best masked S-box achieves better area performance with the fastest speed compared with the existing works. Therefore, our masked S-box is suitable for resource-constrained applications with fast speed requirements.

ISSN号：0218-1266

是否译文：否

发表时间：2018-10-01

合写作者：Ye, Yunfei,Zhang, Xiaoqiang,Dong, Liling,周芳

通讯作者：吴宁