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11-Round impossible differential algebraic attack for serpent encryption algorithm |
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| Authors: | Zhihua Hu Zhongping Qin |
| Institution: | 1.School of Computer,Wuhan University,Wuhan,Hubei, China;2.College of Mathematical and Information Sciences,Huanggang Normal University,Huanggang,Hubei, China;3.School of Software Engineering,Huazhong University of Science and Technology,Wuhan,Hubei, China |
| Abstract: | This paper explored algebraic features of nonlinear parts in Serpent encryption algorithm and offered an 11-round Serpent-128 impossible differential algebraic attack through utilizing the method in constructing S-box algebraic equations. The new method analyzed block 11-round Serpent with 2127 selected plaintexts and 2129 bytes memory space at the same time of giving a new design principle of S-box anti-algebraic attack. |
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