Shashank Agrawal

DiSE: Distributed Symmetric-key Encryption.

2018 · IACR Cryptology ePrint Archive

Threshold cryptography provides a mechanism for protecting secret keys by sharing them among multiple parties, who then jointly perform cryptographic operations. An attacker who corrupts up to a threshold number of parties cannot recover the …

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 …