Paper 2010/201

Impossible Differential Cryptanalysis on E2

Yuechuan Wei, Ruilin Li, Ping Li, and Chao Li

Abstract

E2 is a 128-bit block cipher which employs Feistel structure and 2-round SPN in round function. It is an AES candidate and was designed by NTT. In the former publications, E2 is supposed no more than 5-round impossible differential. In this paper, we describe some 6-round impossible differentials of E2. By using the 6-round impossible differential, we first present an attack on 9-round reduced version of E2-256 without IT Function(the initial transformation) and FT-Function(the Final transformation) function.

Metadata
Available format(s)
-- withdrawn --
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
Block cipherE2Impossible differential attack
Contact author(s)
wych004 @ 163 com
History
2010-09-26: withdrawn
2010-04-16: received
See all versions
Short URL
https://ia.cr/2010/201
License
Creative Commons Attribution
CC BY
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