Improved Security Analysis Of Fugue-256
ACISP'11: Proceedings of the 16th Australasian conference on Information security and privacy（2011）
摘要
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 NISTs SHA3 competition. First we improve Aumasson and Films' 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.
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关键词
Fugue-256 hash function,free-start collision,free-start distinguishers,SHA3 competition,final transformation,improved analytical result,integral distinguisher,meet-in-the-middle preimage attack,ongoing work,possible method,Improved security analysis
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