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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Group Verification Based Multiple-Differential Collision Attack
verfasst von : Changhai Ou, Zhu Wang, Degang Sun, Xinping Zhou, Juan Ai
Erschienen in: Information and Communications Security
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Abstract
Bogdanov and Kizhvatov proposed the concept of test of chain, but they didn’t give a practical scheme. Wang et al. proposed fault tolerant chain to enhance test of chain and gave a practical scheme. However, the attack efficiency of Correlation enhanced Collision Attack (CCA) is much lower than that of Correlation Power Analysis (CPA). A combination of CCA and CPA in fault tolerant chain proposed by Wang et al. may be unreasonable. Most importantly, when the threshold \(Thr_{\varDelta }\) introduced in Sect. 2.3 is large, the key recovery becomes very complex. Fault tolerant chain is unapplicable to this situation. In order to solve these problems, we propose a kind of new chain named group verification chain in this paper. We combine our group verification chain with MDCA and propose Group Verification based Multiple-Differential Collision Attack (GV-MDCA). Experiments on power trace set downloaded from the website DPA contest v4 show that our group verification chain significantly improves the efficiency of fault tolerant chain.