Title
A generalization of linear cryptanalysis and the applicability of Matsui's piling-up lemma
Abstract
Matsui's linear cryptanalysis for iterated block ciphers is generalized by replacing his linear expressions with I/O sums. For a single round, an I/O sum is the XOR of a balanced binary-valued function of the round input and a balanced binary-valued function of the round output. The basic attack is described and conditions for it to be successful are given. A procedure for finding effective I/O sums, i.e., I/O sums yielding successful attacks, is given. A cipher contrived to be secure against linear cryptanalysis but vulnerable to this generalization of linear cryptanalysis is given. Finally, it is argued that the ciphers IDEA and SAFER K-64 are secure against this generalization.
Year
DOI
Venue
1995
10.1007/3-540-49264-X_3
EUROCRYPT
Keywords
Field
DocType
single round,linear expression,ciphers idea,safer k-64,round input,successful attack,linear cryptanalysis,piling-up lemma,o sum,round output,balanced binary-valued function,block cipher,value function
Mod n cryptanalysis,Discrete mathematics,Higher-order differential cryptanalysis,Boomerang attack,Piling-up lemma,Block cipher,Impossible differential cryptanalysis,Theoretical computer science,Linear cryptanalysis,Mathematics,Differential cryptanalysis
Conference
ISBN
Citations 
PageRank 
3-540-59409-4
53
5.73
References 
Authors
6
3
Name
Order
Citations
PageRank
Carlo Harpes19713.23
Gerhard G. Kramer2535.73
James L. Massey31096272.94