A Differential Attack on Reduced-Round SC2000

Authors	H. Raddum and L. Knudsen
Title	A Differential Attack on Reduced-Round SC2000
Afilliation	, Communication Systems
Project(s)	Simula UiB
Status	Published
Publication Type	Proceedings, refereed
Year of Publication	2001
Conference Name	Selected Areas in Cryptography 2001
Volume	2259
Pagination	190 - 198
Date Published	12/2001
Publisher	Lecture Notes in Computer Science, Springer Verlag
ISBN Number	978-3-540-43066-7
ISSN Number	0302-9743
Abstract	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.
DOI	10.1007/3-540-45537-X_15
Citation Key	24063

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