Fast Short and Fast Linear Cramer-Shoup - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2020

Fast Short and Fast Linear Cramer-Shoup

Résumé

A linear Cramer-Shoup encryption scheme version was proposed by Shacham in 2007. Short Cramer-Shoup encryption scheme was designed by Abdalla et al. in 2014. This scheme is a variant of the Cramer-Shoup encryption scheme that has a smaller size. They proved that it is an IND-PCA secure encryption under DDH and the collisionresistance assumptions. We design a faster version of Short Cramer-Shoup encryption scheme denoted Fast Short Cramer-Shoup encryption. We also, proposed a faster version of linear Cramer-Shoup encryption called Fast Linear Cramer-Shoup. We prove that the Fast Short Cramer-Shoup is IND-PCA secure under DDH and the collision-resistance assumptions. We also, show that our linear encryption is CCA secure under the Linear assumption. Finally we run an evaluation of performances of our schemes.
Fichier principal
Vignette du fichier
icics-version.pdf (310.54 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03419449 , version 1 (08-11-2021)

Licence

Paternité

Identifiants

  • HAL Id : hal-03419449 , version 1

Citer

Pascal Lafourcade, Léo Robert, Demba Sow. Fast Short and Fast Linear Cramer-Shoup. Foundations and Practice of Security - 13th International Symposium, FPS, Dec 2020, Montreal, France. ⟨hal-03419449⟩
32 Consultations
64 Téléchargements

Partager

Gmail Facebook X LinkedIn More