Whirlpool的一种改进算法

›› 2011, Vol. 24 ›› Issue (11): 100-.

Whirlpool的一种改进算法

刘飞,黄玉划,吴匡时

(南京航空航天大学信息科学与技术学院,江苏南京 210016)

出版日期:2011-11-15 发布日期:2011-11-25
作者简介:刘飞(1988—),男,硕士研究生。研究方向:密码学。

An Improved Algorithm of Whirlpool

LIU Fei, HUANG Yu-Hua, WU Kuang-Shi

(College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

Online:2011-11-15 Published:2011-11-25

摘要/Abstract

摘要：

利用已有的分组密码算法构造Hash函数,其中最具代表性的是Whirlpool算法,由于该算法的分组长度与输出长度相同,所以效率是AES-128算法的1/2。文中借鉴分组密码AES-256的密钥扩展思想,提出一种Whirlpool的消息扩展改进方案,同时增加分组迭代的轮数。改进方案在不降低原算法的安全性基础上,效率则提高到了约为原来的1.4倍。

关键词: Whirlpool, 密钥扩展, Hash

Abstract:

The use of the block cipher to construct a Hash function is a very common method.The most representative algorithm is Whirlpool.This algorithm has the same packet length as the output length,but its efficiency is half that of AES-128.We obtain a message extension improvement program of Whirlpool with the thought of AES-256,while increasing the iterative rounds.The efficiency of this algorithm is about 1.4 times higher than that of the original algorithm with the security of the algorithm remaining unchanged.

Key words: Whirlpool;key expansion;Hash

中图分类号:

TN918.1

刘飞, 黄玉划, 吴匡时. Whirlpool的一种改进算法[J]. , 2011, 24(11): 100-.

LIU Fei, HUANG Yu-Hua, WU Kuang-Shi. An Improved Algorithm of Whirlpool[J]. , 2011, 24(11): 100-.

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