Rijndael-160的中间相遇攻击  

A Meet-in-the-Middle Attack on Rijndael-160

作　　者：苏崇茂 

机构地区：[1]广西金投互联网金融服务有限公司,南宁530021 [2]广西金融投资集团有限公司,南宁530021

出　　处：《舰船电子工程》2018年第1期105-107,119,共4页Ship Electronic Engineering

摘　　要：V.Rijmen和J.Daemen共同设计了一个SPN型结构分组密码-Rijndael。论文利用Rijndael-160的算法结构,构造出3、4轮相遇区分器,并由此给出6、7轮Rijndael-160的新攻击。结果表明:6轮新攻击的数据复杂度约为2^(32)选择明文,时间复杂度约为2^(81.5)次6轮Rijndael-160加密;7轮新攻击的数据复杂度约为2^(80)选择明文,时间复杂度约为2^(129.4)次7轮Rijndael-160加密。与已有的攻击结构相比较,新攻击有效地降低了攻击所需的数据复杂度以及时间复杂度。Rijndael is a SPN structure block cipher which is designed by V. Rijmen and J. Daemen. 3-round and 4-roundmeet-in-the-middle distinguisher is constructed by exploiting the properties of Rijndael-160 cipher,a new attack on 6-round and 7 round Rijndael-160 is proposed. It is shown that the 6-round attack requires a data complexity of about 2^(32) chosen plaintexts anda time complexity of about 2^(81.56)-round Rijndael-160 encryptions. The 7-round attack requires a data complexity of about 2^(80) cho-sen plaintexts and a time complexity of about 2^(129.47)-round Rijndael-160 encryptions.Compared with the previous published crypt-analytic results,the new attack effectively reduces the data complexity and time complexity required for the attack.

关 键 词：分组密码 Rijndael-160算法 中间相遇攻击 数据复杂度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]