Welcome to the resource topic for 2009/484
Title:
New Pseudo-Near-Collision Attack on Reduced-Round of Hamsi-256
Authors: Meiqin Wang, Xiaoyun Wang, Keting Jia, Wei Wang
Abstract:Hamsi-256 is designed by Özgül Kücük and it has been a candidate Hash function for the second round of SHA-3. The compression function of Hamsi-256 maps a 256-bit chaining value and a 32-bit message to a new 256-bit chaining value. As hashing a message, Hamsi-256 operates 3-round except for the last message it operates 6-round. In this paper, we will give the pseudo-near-collision for 5-round Hamsi-256. By the message modifying, the pseudo-near-collision for 3, 4 and 5 rounds can be found with 2^5, 2^{32} and 2^{125} compression function computations respectively.
ePrint: https://eprint.iacr.org/2009/484
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