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Conference Papers Year : 2015

Differential Forgery Attack against LAC


LAC is one of the candidates to the CAESAR competition. In this paper we present a differential forgery attack on LAC. We study the collection of characteristics following a fixed truncated characteristic, in order to obtain a lower bound on the probability of a differential. We show that some differentials have a probability higher than 2^-64 , which allows a forgery attack on the full LAC. This work illustrates the difference between the probability of differentials and characteristics, and we describe tools to evaluate the probability of some characteristics.
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Dates and versions

hal-01017048 , version 1 (01-07-2014)
hal-01017048 , version 2 (14-12-2015)


  • HAL Id : hal-01017048 , version 2


Gaëtan Leurent. Differential Forgery Attack against LAC. Selected Areas in Cryptography - SAC 2015, Aug 2015, Sackville, Canada. ⟨hal-01017048v2⟩


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