Feel the Quantum Functioning: Instantiating Generic Multi-Input Functional Encryption from Learning with Errors

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

Abstrakti

Functional Encryption (FE) allows users who hold a specific decryption key, to learn a specific function of encrypted data while the actual plaintexts remain private. While FE is still in its infancy, it is our strong belief that in the years to come, this remarkable cryptograhic primitive will have matured to a degree that will make it an integral part of access-control systems, especially cloud-based ones. To this end, we believe it is of great importance to not only provide theoretical and generic constructions but also concrete instantiations of FE schemes from well-studied cryptographic assumptions. Therefore, in this paper, we undertake the task of presenting two instantiations of the generic work presented in [5] from the Decisional Diffie-Hellman (DDH) problem that also satisfy the property of verifiable decryption. Moreover, we present a novel multi-input FE (MIFE) scheme, that can be instantiated from Regev’s cryptosystem, and thus remains secure even against quantum adversaries. Finally, we provide a multi-party computation (MPC) protocol that allows our MIFE construction to be deployed in the multi-client model.

AlkuperäiskieliEnglanti
OtsikkoData and Applications Security and Privacy XXXVI - 36th Annual IFIP WG 11.3 Conference, DBSec 2022, Proceedings
ToimittajatShamik Sural, Haibing Lu
KustantajaSpringer
Sivut279-299
Sivumäärä21
ISBN (painettu)9783031106835
DOI - pysyväislinkit
TilaJulkaistu - 2022
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAnnual IFIP WG 11.3 Conference on Data and Applications Security and Privacy - Newark, Yhdysvallat
Kesto: 18 heinäk. 202220 heinäk. 2022

Julkaisusarja

NimiLecture Notes in Computer Science
Vuosikerta13383 LNCS
ISSN (painettu)0302-9743
ISSN (elektroninen)1611-3349

Conference

ConferenceAnnual IFIP WG 11.3 Conference on Data and Applications Security and Privacy
Maa/AlueYhdysvallat
KaupunkiNewark
Ajanjakso18/07/2220/07/22

Julkaisufoorumi-taso

  • Jufo-taso 1

!!ASJC Scopus subject areas

  • Theoretical Computer Science
  • Yleinen tietojenkäsittelytiede

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