Lightweight Cryptography for Security and Privacy: 4th by Tim Güneysu, Gregor Leander, Amir Moradi

By Tim Güneysu, Gregor Leander, Amir Moradi

This publication constitutes the refereed post-conference complaints of the 4th overseas Workshop on light-weight Cryptography for safeguard and privateness, LightSec 2015, held in Bochum, Germany, in September 2015.

The nine complete papers awarded have been rigorously reviewed and chosen from 17 submissions. The papers are geared up within the following topical sections: cryptanalysis, light-weight buildings, implementation challenges.

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Additional resources for Lightweight Cryptography for Security and Privacy: 4th International Workshop, LightSec 2015, Bochum, Germany, September 10-11, 2015, Revised Selected Papers

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MA - Memory Accesses, b - bits, CP - Chosen Plaintexts. 9999939 % Sect. 58 data complexity to achieve the success probability of the original attack. This change reduces the memory required for the guessed key counters to 6 · 226 bits from 6 · 232 bits. These corrections are summarized in Table 4. 5 Differential-Linear Attacks on SERPENT The most successful differential-linear attacks on Serpent were provided by Dunkelman et al. in [13] for 10, 11, and 12 rounds for the key sizes 128, 192, and 256, respectively.

That is, when A obtains σ0∗ , which is generated by IDi0 at a time T0 , and σ1∗ , which is generated by IDib at a time T1 = T0 , no A can distinguish whether two signatures are respectively made by the same user IDi0 or different users IDi0 and IDi1 . In order to prevent a trivial linking attack, A is not allowed to obtain a signature for (IDi0 , T1 ) in this case. We note that we do not have to consider the case IDi0 = IDi1 and T0 = T1 , since time T is an input of the verification algorithm. That is, A can easily break anonymity in this case: A just obtains σ ∗ ← GSign(gpk, tpk, tTb , sigkIDi0 , M ∗ ) and checks whether GVerify(gpk, tpk, RLT0 , M ∗ , σ ∗ ) = 1 or not.

C. ) INDOCRYPT 2010. LNCS, vol. 6498, pp. 197–209. Springer, Heidelberg (2010) 28. : Improbable differential attacks on PRESENT using undisturbed bits. J. Comput. Appl. Math. 259, Part B(0), 503–511 (2014) ¨ 29. : Differential factors: improved attacks on SERPENT. In: ¨ urk [14], pp. 69–84 Eisenbarth and Ozt¨ 30. : Improbable differential attacks on serpent using undisturbed bits. , Rajarajan, M. ) Proceedings of the 7th International Conference on Security of Information and Networks, p. 145. ACM, New York (2014) 31.

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