[Resource Topic] 2010/398: Distinguisher for Shabal's Permutation Function

Welcome to the resource topic for 2010/398

Title:
Distinguisher for Shabal’s Permutation Function

Authors: Peter Novotney

Abstract:

In this note we consider the Shabal permutation function \mathcal{P} as a block cipher with input A_p,B_p and key C,M and describe a distinguisher with a data complexity of 2^{23} random inputs with a given difference. If the attacker can control one chosen bit of B_p, only 2^{21} inputs with a given difference are required on average. This distinguisher does not appear to lead directly to an attack on the full Shabal construction.

ePrint: https://eprint.iacr.org/2010/398

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