Webforgery attacks and not to key recovery. FlexAEAD seems to be no exception in this regard. The secret subkeys K0,K1,K2,K3 are generated from the master key via triple-encryption … WebThis attack, that was fully verified in practice, allows recovering the secret subkeys of FlexAEAD-64 with time complexity of less than 2 encryptions, which is the first practical …

Practical Key Recovery Attacks on FlexAEAD — Technische …

Our key recovery attack consists of six phases: 1. 1. Recovering the first half of K_3, using a truncated differential attack on the generation of the basic counter. 2. 2. Recovering the second half of K_3, using a truncated differential attack on the generation of the sequence \{S_i\}from the basic counter. 3. 3. … See more We have verified the attack with the reference implementation of FlexAEAD [6]. However, we discovered that this implementation does not match the specification of … See more The attack on FlexAEAD-64 described above can be applied also to FlexAEAD-128 and FlexAEAD-256, at the expense of a significant increase in the … See more WebJul 5, 2024 · In this paper we present a practical key recovery attack on FlexAEAD-64. Like in [8, 16] , the starting point of our attack is a truncated differential of PF K . sar to trl

Gaëtan Leurent: publications - Inria

WebOur attack, that was fully verified in practice, allows recovering the secret subkeys of FlexAEAD-64 with time complexity of less than 2 31 encryptions (with experimental … WebIn this paper we present a practical key recovery attack on FlexAEAD, using clusters of differentials for the internal permutation and the interplay between different parts of the … WebThis paper analyzes the internal keyed permutation of FlexAEAD which is a round-1 candidate of the NIST LightWeight Cryptography Competition. ... All practical attacks have … shottle belper