Cryptographic Hardware and Embedded Systems -- CHES 2015: by Tim Güneysu, Helena Handschuh

By Tim Güneysu, Helena Handschuh

This e-book constitutes the refereed lawsuits of the seventeenth overseas Workshop on Cryptographic and Embedded platforms, CHES 2015, held in Saint Malo, France, in September 2015. The 34 complete papers integrated during this quantity have been rigorously reviewed and chosen from 128 submissions. they're prepared within the following topical sections: processing suggestions in side-channel research; cryptographic implementations; homomorphic encryption in undefined; side-channel assaults on public key cryptography; cipher layout and cryptanalysis; precise random quantity turbines and entropy estimations; side-channel research and fault injection assaults; higher-order side-channel assaults; bodily unclonable features and trojans; side-channel assaults in perform; and lattice-based implementations.

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A look at the literature suggests a wide variety of tools for the last two (modeling and exploitation) steps. They typically include a plethora of (profiled and nonprofiled) distinguishers, including but not limited to [4,9,17,39], exploited via c International Association for Cryptologic Research 2015 T. G¨ uneysu and H. ): CHES 2015, LNCS 9293, pp. 42–59, 2015. , collision-based [27] or algebraic [37]. By contrast, the measurement and preprocessing steps are in general less discussed, despite their importance from an engineering point-of-view.

D×Q matrix 1×D matrix (V D )T In addition, after this projection, the leakage becomes scalar and can be characterized by a signal-to-noise ratio as shown in the following. Corollary 4. After optimal dimensionality reduction, the signal-noise-ratio is given by 1 T = (αD ) Σ −1 αD . σ ˜2 Proof. This is in line with Eq. (10). The random leakage X D,Q is protected onto ˜ q = Yq (k) + N ˜ (q = 1, . . , Q) where N ˜ is an additive white V D to yield X T Gaussian noise (AWGN) distributed as N (0, ((αD ) Σ −1 αD )−1 ).

Rohatgi, P. ) CARDIS 2013. LNCS, vol. 8419, pp. 253–270. Springer, Heidelberg (2014) 8. : Practical improvements of side-channel attacks on AES: feedback from the 2nd DPA contest. J. Cryptogr. Eng. 4, 1–16 (2014) 9. : Elements of Information Theory, 2nd edn. WileyInterscience, New York (2006). ISBN-10: ISBN-10: 0471241954, ISBN-13: 978– 0471241959 10. : High-order timing attacks. In: Proceedings of the First Workshop on Cryptography and Security in Computing Systems, CS2 2014, pp. 7–12. ACM, New York (2014) 11.

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