MOE: Multiplication Operated Encryption with Trojan Resilience - INRIA - Institut National de Recherche en Informatique et en Automatique Accéder directement au contenu
Article Dans Une Revue IACR Transactions on Symmetric Cryptology Année : 2021

MOE: Multiplication Operated Encryption with Trojan Resilience

Résumé

In order to lower costs, the fabrication of Integrated Circuits (ICs) is increasingly delegated to offshore contract foundries, making them exposed to malicious modifications, known as hardware Trojans. Recent works have demonstrated that a strong form of Trojan-resilience can be obtained from untrusted chips by exploiting secret sharing and Multi-Party Computation (MPC), yet with significant cost overheads. In this paper, we study the possibility of building a symmetric cipher enabling similar guarantees in a more efficient manner. To reach this goal, we exploit a simple round structure mixing a modular multiplication and a multiplication with a binary matrix. Besides being motivated as a new block cipher design for Trojan resilience, our research also exposes the cryptographic properties of the modular multiplication, which is of independent interest.
Fichier principal
Vignette du fichier
MOE.pdf (1.89 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03453550 , version 1 (28-11-2021)

Identifiants

Citer

Olivier Bronchain, Sebastian Faust, Virginie Lallemand, Gregor Leander, Léo Perrin, et al.. MOE: Multiplication Operated Encryption with Trojan Resilience. IACR Transactions on Symmetric Cryptology, 2021, 2021 (1), pp.78-129. ⟨10.46586/tosc.v2021.i1.78-129⟩. ⟨hal-03453550⟩
74 Consultations
81 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More