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Published in:
2015 | OriginalPaper | Chapter
Functional Encryption for Randomized Functionalities
Authors : Vipul Goyal, Abhishek Jain, Venkata Koppula, Amit Sahai
Published in: Theory of Cryptography
Publisher: Springer Berlin Heidelberg
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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.