Cryptology ePrint Archive: Report 2013/729

Functional Encryption for Randomized Functionalities

Vipul Goyal and Abhishek Jain and Venkata Koppula and 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.

Category / Keywords: public-key cryptography / functional encryption, obfuscation

Date: received 6 Nov 2013, last revised 29 Oct 2014

Contact author: abhishek at csail mit edu

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Version: 20141029:221807 (All versions of this report)

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