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An Improved Side Channel Attack Using Event Information of Subtraction
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- Authors
- Jong-Yeon Park, Dong-Guk Han, Okyeon Yi, JeongNyeo Kim
- Issue Date
- 2014-02
- Citation
- Journal of Network and Computer Applications, v.38, no.1, pp.99-105
- ISSN
- 1084-8045
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- RSA-CRT is a widely used algorithm that provides high performance implementation of the RSA-signature algorithm. Many previous studies on each operation step have been published to verify the physical leakages of RSA-CRT when used in smart devices. This paper proposes SAED (subtraction algorithm analysis on equidistant data), which extracts sensitive information using the event information of the subtraction operation in a reduction algorithm. SAED is an attack method that uses algorithm-dependent power signal changes. An adversary can extract a key using differential power analysis (DPA) of the subtraction operation. This paper indicates the theoretical rationality of SAED, and shows that its results are better than those of other methods. According to our experiments, only 256 power traces are sufficient to acquire one block of data. We verify that this method is more efficient than those proposed in previously published studies. © 2013 Elsevier Ltd. All rights reserved.
- KSP Keywords
- Differential Power Analysis, Event information, Power Signal, Reduction algorithm, Sensitive information, Side Channel Attacks, Signature algorithm, Smart devices, Subtraction algorithm, Subtraction operation, algorithm analysis