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Paper 2011/619
Multidimensional Meet-in-the-Middle Attack and Its Applications to KATAN32/48/64
Bo Zhu and Guang Gong
Abstract
This paper investigates a new approach to analyze symmetric ciphers by guessing intermediate states and dividing algorithms to consecutive sub-ciphers. It is suitable for ciphers with simple key schedules and block sizes smaller than key lengths. A thorough theoretical analysis of this multidimensional method is given, and new attacks on the block cipher family KATAN are proposed by applying this method, which can attack 175-round KATAN32, 130-round KATAN48 and 112-round KATAN64 faster than exhaustive key search.
Note: changed some wording to avoid confusions
Metadata
- Available format(s)
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Multidimensionalmeet-in-the-middlecryptanalysisKATAN
- Contact author(s)
- bo zhu @ uwaterloo ca
- History
- 2014-08-27: last of 7 revisions
- 2011-11-21: received
- See all versions
- Short URL
- https://ia.cr/2011/619
- License
-
CC BY