(Quantum) Collision Attacks on Reduced Simpira v2

(Quantum) Collision Attacks on Reduced Simpira v2

Blog Article

Simpira v2 is an AES-based permutation proposed by read more Gueron and Mouha at ASIACRYPT 2016.In this paper, we build an improved MILP model to count the differential and linear active Sboxes for Simpira v2, which achieves tighter bounds of the minimum number of active Sboxes for a few versions of Simpira v2.Then, based on the new model, we find some new truncated differentials for Simpira lovesense 3 v2 and give a series (quantum) collision attacks on two versions of reduced Simpira v2.