2011 | OriginalPaper | Buchkapitel
Improved Security Analysis of Fugue-256 (Poster)
verfasst von : Praveen Gauravaram, Lars R. Knudsen, Nasour Bagheri, Lei Wei
Erschienen in: Information Security and Privacy
Verlag: Springer Berlin Heidelberg
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We present some improved analytical results as part of the ongoing work on the analysis of Fugue-256 hash function, a second round candidate in the NIST’s SHA3 competition. First we improve Aumasson and Phans’ integral distinguisher on the 5.5 rounds of the
final transformation
of Fugue-256 to 16.5 rounds. Next we improve the designers’ meet-in-the-middle preimage attack on Fugue-256 from 2
480
time and memory to 2
416
. Finally, we comment on possible methods to obtain free-start distinguishers and free-start collisions for Fugue-256.