Constructive Side-Channel Analysis and Secure Design

Constructive Side-Channel Analysis and Secure Design
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建设性的侧信道分析和安全设计

DOI:
10.1007/978-3-319-10175-0_3
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发表时间:
2014
期刊:
--
影响因子:
--
通讯作者:
Banciu V
Banciu V
中科院分区:
--
文献类型:
--
作者:
Banciu V

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简单的侧信道攻击在数据复杂性(即成功攻击所需的侧信道观测的数量)与计算复杂性(即应用于侧信道迹线的操作的数量)之间进行权衡。在对高级加密标准(AES)的简单功率分析(SPA)攻击的具体示例中,可以在文献中找到两种方法,一种是涉及诸如密钥候选的有效枚举之类的基本技术的实用方法,另一种似乎更优雅并且使用代数技术。这两种不同的技术都被用于互补的设置:实用攻击仅应用于密钥调度,而更优雅的方法仅应用于加密轮。在这篇文章中,我们研究这些方法如何比较,我们认为是一个更实际的设置,其中对手获得有关密钥调度和加密轮的错误信息。我们的结论是,语用列举技术更好地处理错误的信息,这使得它在实践中更有趣。
Simple side-channel attacks trade off data complexity (i.e. the number of side-channel observations needed for a successful attack) with computational complexity (i.e. the number of operations applied to the side-channel traces). In the specific example of Simple Power Analysis (SPA) attacks on the Advanced Encryption Standard (AES), two approaches can be found in the literature, one which is a pragmatic approach that involves basic techniques such as efficient enumeration of key candidates, and one that is seemingly more elegant and uses algebraic techniques. Both of these different techniques have been used in complementary settings: the pragmatic attacks were solely applied to the key schedule whereas the more elegant methods were only applied to the encryption rounds. In this article, we investigate how these methods compare in what we consider to be a more practical setting in which adversaries gain access to erroneous information about both key schedule and encryption rounds. We conclude that the pragmatic enumeration technique better copes with erroneous information which makes it more interesting in practice.
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