Download Advances in Cryptology - ASIACRYPT 2010: 16th International by Dmitry Khovratovich, Ivica Nikolić, Christian Rechberger PDF

By Dmitry Khovratovich, Ivica Nikolić, Christian Rechberger (auth.), Masayuki Abe (eds.)

This publication constitutes the refereed court cases of the sixteenth overseas convention at the concept and alertness of Cryptology and knowledge protection, ASIACRYPT 2010, held in Singapore, in December 2010. The 35 revised complete papers offered have been conscientiously reviewed and chosen from 216 submissions. The papers are equipped in topical sections on hash assaults; symmetric-key cryptosystems; block and flow ciphers; protocols; key trade; origin; zero-knowledge; lattice-based cryptography; safe verbal exchange and computation; types, notions, and assumptions; and public-key encryption.

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Additional resources for Advances in Cryptology - ASIACRYPT 2010: 16th International Conference on the Theory and Application of Cryptology and Information Security, Singapore, December 5-9, 2010. Proceedings

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The message M = μj−8 ||m∗1 || . . ||m −1 is a second preimage of H(M ). 2 Expandable Messages for Hamsi-256 Expandable messages are generated using the multicollision algorithm of [6]. Expandable messages of size 2k can be generated by iterating the following search. Set C0 = IV (the initialization vector of Hamsi-256). For all i in {0, . . , k − 1}, find two sequences of message blocks Li,0 = (ai,1 , . . , ai,αi ) and Li,1 = (bi,1 , . . , bi,αi +2i ) such that : Ci+1 = Fα (Ci , ai,1 , . . , ai,αi ) = Fαi +2i (Ci , bi,1 , .

It contains 4 versions, with respective outputs of 224, 256, 384, and 512 bits. It is based on the Merkle-Damgård domain extender, however its design is rather original as it does not make use of a block cipher in Davies-Meyer mode. The Hamsi compression function uses short message blocks and its security relies on a complex message expansion. Instead of a keyed permutation, a fixed permutation is applied to the concatenation of the incoming chaining variable and the expanded message. The new chaining variable is obtained by truncation of the output of the permutation and feedforward with the previous chaining variable.

CRYPTO 2004. LNCS, vol. 3152, pp. 306–316. Springer, Heidelberg (2004) 7. : Second preimages on n-bit hash functions for much less than 2n work. In: Cramer, R. ) EUROCRYPT 2005. LNCS, vol. 3494, pp. 474–490. Springer, Heidelberg (2005) 8. : New pseudo-near-collision attack on reducedround of hamsi-256. org/ 9. : Near collisions for the compression function of hamsi-256. In: CRYPTO rump session (2009) 10. : An algebraic attack on hamsi-256 (to appear) 11. jp Abstract. In this paper, we present non-full-active Super-Sbox analysis which can detect non-ideal properties of a class of AES-based permutations with a low complexity.

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