Brent Waters

How to Use Indistinguishability Obfuscation: Deniable Encryption, and More

2021 · SIAM Journal on Computing

We introduce a new technique, that we call punctured programs, to apply indistinguishability obfuscation towards cryptographic problems. We use this technique to carry out a systematic study of the applicability of indistinguishability obfuscation to a …

Impossibility of Simulation Secure Functional Encryption Even with Random Oracles.

2016

In this work we study the feasibility of achieving simulation security in functional encryption (FE) in the random oracle model. Our main result is negative in that we give a functionality for which it is …