Overestimates for the Gain of Multiple Linear Approximations

Sean Murphy

(2009)

Sean Murphy (2009) Overestimates for the Gain of Multiple Linear Approximations.

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Abstract

We show that Corollary 1 of “On Multiple Linear Approximations” (Crypto 2004 – LNCS 3152) is incorrect. In particular, the value given for the gain by Corollary 1 is likely to be a significant overestimate of this quantity. Thus any data requirements for linear cryptanalysis with multiple linear approximations based on this value for the gain are highly questionable.

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This is a Published version
This version's date is: 16/10/2009
This item is peer reviewed

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https://repository.royalholloway.ac.uk/items/d302dcda-6a82-5341-244c-cf5ba4599118/1/

Item TypeMonograph (Technical Report)
TitleOverestimates for the Gain of Multiple Linear Approximations
AuthorsMurphy, Sean
DepartmentsFaculty of Science\Mathematics

Deposited by () on 24-Jun-2010 in Royal Holloway Research Online.Last modified on 15-Dec-2010

Notes

References

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3. B.S. Kaliski and M.J.B. Robshaw. Linear Cryptanalysis Using Multiple Approximations
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5. S. Murphy. The Independence of Linear Approximations in Symmetric Cryptology.
IEEE Transactions on Information Theory, 52:5510–5518, 2006.

6. S.D. Silvey. Statistical Inference. Chapman and Hall, 1975.


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