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题名:
near-collisions on the reduced-round compression functions of skein and blake
作者: Su Bozhan ; Wu Wenling ; Wu Shuang ; Dong Le
会议文集: Cryptology and Network Security
会议名称: Cryptology and Network Security 9th International Conference, CANS 2010
会议日期: 2010
出版日期: 2010
会议地点: Kuala Lumpur Malaysia
关键词: Hash function ; Near ; collision ; SHA ; 3 candidates ; Skein ; BLAKE
部门归属: State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, 100190 P.R. China
英文摘要: The SHA-3 competition organized by NIST [1] aims to find a new hash standard as a replacement of SHA-2. Till now, 14 submissions have been selected as the second round candidates, including Skein and BLAKE, both of which have components based on modular addition, rotation and bitwise XOR (ARX). In this paper, we propose improved near-collision attacks on the reduced-round compression functions of Skein and BLAKE. The attacks are based on linear differentials of the modular additions. The computational complexity of near-collision attacks on a 4-round compression function of BLAKE-32, 4-round and 5-round compression functions of BLAKE-64 are 221, 216 and 2216 respectively, and the attacks on 20-round compression functions of Skein-256, Skein-512 and a 24-round compression function of Skein-1024 have a complexity of 297, 252 and 2452 respectively.
内容类型: 会议论文
URI标识: http://ir.iscas.ac.cn/handle/311060/8836
Appears in Collections:信息安全国家重点实验室_会议论文

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Recommended Citation:
Su Bozhan,Wu Wenling,Wu Shuang,et al. near-collisions on the reduced-round compression functions of skein and blake[C]. 见:Cryptology and Network Security 9th International Conference, CANS 2010. Kuala Lumpur Malaysia. 2010.
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