Secure Keyless Multi-Party Storage Scheme - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2024

Secure Keyless Multi-Party Storage Scheme

Résumé

Using threshold secret sharing, we propose a solution tai- lored for forgetful clients (i.e., not required to keep any cryptographic secret) while accommodating the dynamic nature of multi-cloud deploy- ments. Furthermore, we delegate the computation and distribution of shares to an intermediate server (proxy), effectively minimizing the client workload. We propose two variants of a keyless, space-efficient multi- cloud storage scheme named KAPRE and KAME. Our solution KAPRE requires less communications and computations, while KAME preserves data confidentiality against a colluding proxy. Our protocols offer robust guarantees for data integrity, and we demonstrate the proxy’s ability to identify and attribute blame to servers responsible for sending corrupted shares during data reconstruction. We establish a comprehensive secu- rity model and provide proofs of the security properties of our protocols. To complement this theoretical analysis, we present a proof-of-concept to illustrate the practical implementation of our proposed scheme.
Fichier principal
Vignette du fichier
main.pdf (767.54 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04540895 , version 1 (10-04-2024)

Identifiants

  • HAL Id : hal-04540895 , version 1

Citer

Pascal Lafourcade, Lola-Baie Mallordy, Charles Olivier-Anclin, Léo Robert. Secure Keyless Multi-Party Storage Scheme. ESORICS, Sep 2024, Bydgoszcz, Poland. ⟨hal-04540895⟩
0 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More