Secure Distributed Computation on Private Inputs - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Rapport (Rapport De Recherche) Année : 2015

Secure Distributed Computation on Private Inputs

Résumé

The recent notion of encryption switching protocol (ESP) allows two players to obliviously switch between two encryption schemes. Instantiated from multiplicatively homomorphic encryption and additively homomorphic encryption, ESPs provide a generic solution to two-party computation and lead to particularly efficient protocols for arithmetic circuits in terms of interaction and communication. In this paper, we further investigate their applications and show how ESPs can be used as an alternative to fully-homomorphic encryption (FHE) to outsource computation on sensitive data to cloud providers. Our interactive solution relies on two non-colluding servers which obliviously perform the operations on encrypted data, and eventually send back the outcome in an encrypted form to the appropriate players. Our solution makes use of a nice combination of the Paillier encryption scheme and the Damgard-Jurik variant with multiple trapdoors, which notably allows cross-user evaluations on encrypted data.
Fichier non déposé

Dates et versions

hal-01245235 , version 1 (16-12-2015)

Identifiants

  • HAL Id : hal-01245235 , version 1

Citer

Geoffroy Couteau, Thomas Peters, David Pointcheval. Secure Distributed Computation on Private Inputs. [Research Report] Cryptology ePrint Archive: Report 2015/1196, IACR Cryptology ePrint Archive. 2015. ⟨hal-01245235⟩
99 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More