CAJ | 학술논문

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。
이용이유적분조밀마산법구조Hash함수,기중최구대표성적시Whirlpool산법,유우해산법적분조장도여수출장도상동,소이효솔시AES-128산법적1/2。문중차감분조밀마AES-256적밀약확전사상,제출일충Whirlpool적소식확전개진방안,동시증가분조질대적륜수。개진방안재불강저원산법적안전성기출상,효솔칙제고도료약위원래적1.4배。
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.