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 ebook constitutes the refereed court cases of the sixteenth foreign convention at the concept and alertness of Cryptology and data safeguard, ASIACRYPT 2010, held in Singapore, in December 2010. The 35 revised complete papers awarded have been rigorously reviewed and chosen from 216 submissions. The papers are geared up in topical sections on hash assaults; symmetric-key cryptosystems; block and circulation ciphers; protocols; key alternate; starting place; zero-knowledge; lattice-based cryptography; safe communique and computation; types, notions, and assumptions; and public-key encryption.

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Read or Download Advances in Cryptology - ASIACRYPT 2010: 16th International Conference on the Theory and Application of Cryptology and Information Security, Singapore, December 5-9, 2010. Proceedings PDF

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Additional info 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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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 , .

To simplify the dedicated analysis on ECHO, as introduced by [26], we denote 4 types of byte-wise truncated differences of the BigWord as shown in Fig. 3. 2 Grøstl Permutation and Compression Function Grøstl designed by Gauravaram et al. [18] is another hash function built upon the AES-based permutations. Grøstl-256 permutation uses an 8 × 8 state where each element is an 8-bit byte, while Grøstl-512 permutation uses an 8 × 16 state. The number of rounds in the permutation is 10 for Grøstl-224 and -256, and 14 for Grøstl-384 and -512.

4 [17] Sect. 3 ECHO-256 4 264 264 Collision 96 Hash Function 5 2 264 Distinguisher ECHO-256 / -512 3/3 264 /296 264 /264 Semi-free-start coll. Comp. Function 7/7 2107 /2106 264 /264 Distinguisher Grøstl-256 Comp. Func. 10 (full) 2192 264 Distinguisher Grøstl-512 Comp. Func. 11 2640 264 Distinguisher [27] [27] [26] [27] [26] [26] can detect a non-ideal property of the 8-round ECHO permutation with time of 2182 and memory of 237 , while detecting the same property of an ideal permutation requires 2256 .

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