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一种新的简化AES中间相遇攻击方法(英文)

A New Method for Meet-in-the-Middle Attacks on Reduced AES

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【作者】 董晓丽； 胡予濮； 韦永壮； 陈杰；

【Author】 Dong Xiaoli1,Hu Yupu1,Wei Yongzhuang1,2,Chen Jie1,3 1Key Lab. of Computer Networks & Information Security,Ministry of Education,Xidian University,Xi’an 710071, P. R. China 2School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,P. R. China 3State Key Lab. of Information Security,Institute of Software,Chinese Academy of Sciences,Beijing 100049, P. R. China

【机构】 Key Lab. of Computer Networks & Information Security,Ministry of Education,Xidian University； School of Information and Communication,Guilin University of Electronic Technology； State Key Lab. of Information Security,Institute of Software,Chinese Academy of Sciences；

【摘要】 A new 5-round distinguisher of AES with key whitening is presented by using the properties of its round transformation. Based on this distinguisher,we present new meet-in-the-middle attacks on reduced AES considering the key schedule and the time-memory tradeoff approach. New attacks improve the best known meet-in-the-middle attacks on reduced AES presented at FSE2008.We reduce the time complexity of attacks on 7-round AES-192 and 8-round AES-256 by a factor of at least 28. Moreover,the distinguisher can be exploited to develop the attack on 8-round AES-192.

【Abstract】 A new 5-round distinguisher of AES with key whitening is presented by using the properties of its round transformation. Based on this distinguisher,we present new meet-in-the-middle attacks on reduced AES considering the key schedule and the time-memory tradeoff approach. New attacks improve the best known meet-in-the-middle attacks on reduced AES presented at FSE2008.We reduce the time complexity of attacks on 7-round AES-192 and 8-round AES-256 by a factor of at least 28. Moreover,the distinguisher can be exploited to develop the attack on 8-round AES-192.

【关键词】 AES； Rijndael； cryptanalysis； meet-in-the-middle attack；
【Key words】 AES； Rijndael； cryptanalysis； meet-in-the-middle attack；
【基金】 supported by the Nature Science Foundation of China under grant 60970119, 60833008;the National Basic Research Program of China(973) under grant 2007CB311201;the Fundamental Research Funds for the Central Universities under grant K50510010018
  • 【文献出处】 中国通信 ,China Communications , 编辑部邮箱 ,2011年02期
  • 【分类号】TN918.2
  • 【被引频次】5
  • 【下载频次】92
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