Welcome to the resource topic for 2017/534
Title:
Functional Graph Revisited: Updates on (Second) Preimage Attacks on Hash Combiners
Authors: Zhenzhen Bao, Lei Wang, Jian Guo, Dawu Gu
Abstract:This paper studies functional-graph-based (second) preimage attacks against hash combiners. By exploiting more properties of cyclic nodes of functional graph, we find an improved preimage attack against the XOR combiner with a complexity of 2^{5n/8}, while the previous best-known complexity is 2^{2n/3}. Moreover, we find the first generic second-preimage attack on Zipper hash with an optimal complexity of 2^{3n/5}.
ePrint: https://eprint.iacr.org/2017/534
Talk: https://www.youtube.com/watch?v=Y1IfOmcIiao
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