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A Fast and Provably Secure Higher-Order Masking of AES S-Box

机译:AES S-Box的快速且可能安全的高阶掩蔽

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This paper proposes an efficient and secure higher-order masking algorithm for AES S-box that consumes the most computation time of the higher-order masked AES. During the past few years, much of the research has focused on finding higher-order masking schemes for this AES S-box, but these are still slow for embedded processors use. Our proposed higher-order masking of AES S-box is constructed based on the inversion operation over the composite field. We replace the subfield operations over the composite field into the table lookup operation, but these precomputation tables do not require much ROM space because these are the operations over GF(24). In the implementation results, we show that the higher-order masking scheme using our masked S-box is about 2.54 (second-order masking) and 3.03 (third-order masking) times faster than the fastest method among the existing higher-order masking schemes of AES.
机译:本文提出了一种高效安全的AES S-box高阶掩蔽算法,该算法消耗了高阶掩蔽AES的最多计算时间。在过去的几年中,许多研究都集中在为该AES S盒找到更高阶的掩蔽方案,但是对于嵌入式处理器的使用,这些方案仍然很慢。我们基于复合场的反演操作构造了我们提出的AES S-box高阶掩蔽。我们将复合字段上的子字段操作替换为表查找操作,但是这些预计算表不需要大量的ROM空间,因为它们是GF(24)上的操作。在实施结果中,我们表明,使用我们的已屏蔽S-box的高阶屏蔽方案比现有的高阶掩码中最快的方法快约2.54倍(二阶掩码)和3.03(三阶掩码)。 AES方案。

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