AuthorsH. Raddum and L. Knudsen
TitleA Differential Attack on Reduced-Round SC2000
Afilliation, Communication Systems
Project(s)Simula UiB
Publication TypeProceedings, refereed
Year of Publication2001
Conference NameSelected Areas in Cryptography 2001
Pagination190 - 198
Date Published12/2001
PublisherLecture Notes in Computer Science, Springer Verlag
ISBN Number978-3-540-43066-7
ISSN Number0302-9743

SC2000 is a 128-bit block cipher with key length of 128, 192 or 256 bits, developed by Fujitsu Laboratories LTD. For 128-bit keys, SC2000 consists of 6.5 rounds, and for 192- and 256-bit keys it consists of 7.5 rounds. In this paper we demonstrate two different 3.5-round differential characteristics that hold with probabilities 2-106 and 2-107. These characteristics can be used to extract up to 32 bits of the first and last round keys in a 4.5-round variant of SC2000.

Citation Key24063

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