%0 Journal Article
%T Impossible Differential Cryptanalysis of Reduced-Round ARIA and Camellia
%A Wen-Ling Wu
%A Wen-Tao Zhang
%A Deng-Guo Feng
%A <br>Wen-Ling Wu
%A Wen-Tao Zhang
%A and Deng-Guo Feng
%J 计算机科学技术学报
%D 2007
%I 
%X This paper studies the security of the block ciphers ARIA and Camellia against impossible differential cryptanalysis. Our work improves the best impossible differential cryptanalysis of ARIA and Camellia known so far. The designers of ARIA expected no impossible differentials exist for 4-round ARIA. However, we found some nontrivial 4-round impossible differentials, which may lead to a possible attack on 6-round ARIA. Moreover, we found some nontrivial 8-round impossible differentials for Camellia, whereas only 7-round impossible differentials were previously known. By using the 8-round impossible differentials, we presented an attack on 12-round Camellia without FL/FL^-1 layers.
%K block cipher
%K ARIA
%K Camellia
%K data complexity
%K time complexity
%K impossible differential cryptanalysis<br>不可能微分密码分析学
%K 低轮ARIA密码算法
%K Camellia分组加密算法
%K 分组密码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=CBCDFFE5AEBDB1BFE774C258B0989BDF&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=38B194292C032A66&sid=78BF76CF5B7CB0F2&eid=522844664D9E629A&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=2&reference_num=28