The search functionality is under construction.

IEICE TRANSACTIONS on Fundamentals

Higher Order Differential Attack on 6-Round MISTY1

Yukiyasu TSUNOO, Teruo SAITO, Hiroki NAKASHIMA, Maki SHIGERI

  • Full Text Views

    0

  • Cite this

Summary :

MISTY1 is a 64-bit block cipher that has provable security against differential and linear cryptanalysis. MISTY1 is one of the algorithms selected in the European NESSIE project, and it has been recommended for Japanese e-Government ciphers by the CRYPTREC project. This paper reports a previously unknown higher order differential characteristic of 4-round MISTY1 with the FL functions. It also shows that a higher order differential attack that utilizes this newly discovered characteristic is successful against 6-round MISTY1 with the FL functions. This attack can recover a partial subkey with a data complexity of 253.7 and a computational complexity of 264.4, which is better than any previous cryptanalysis of MISTY1.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.1 pp.3-10
Publication Date
2009/01/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E92.A.3
Type of Manuscript
Special Section PAPER (Special Section on Cryptography and Information Security)
Category
Symmetric Cryptography

Authors

Keyword