Functional Encryption for Randomized Functionalities

Vipul Goyal; Abhishek Jain; Venkata Koppula; Amit Sahai

Paper 2013/729 Original: eprint.iacr.org/2013/729 ↗

Functional Encryption for Randomized Functionalities

Vipul Goyal

Abhishek Jain

Venkata Koppula

Amit Sahai

Abstract

In this work, we present the first definitions and constructions for functional encryption supporting randomized functionalities. The setting of randomized functionalities require us to revisit functional encryption definitions by, for the first time, explicitly adding security requirements for dishonest encryptors, to ensure that they cannot improperly tamper with the randomness that will be used for computing outputs. Our constructions are built using indistinguishability obfuscation.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
History: 2014-10-29: last updated; 2013-11-13: published
Short URL: https://ia.cr/2013/729
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2013/729,
      author = {Vipul Goyal and Abhishek Jain and Venkata Koppula and Amit Sahai},
      title = {Functional Encryption for Randomized Functionalities},
      howpublished = {Cryptology {ePrint} Archive, Paper 2013/729},
      year = {2013},
      url = {https://eprint.iacr.org/2013/729}
}