We construct the first (key-policy) attribute-based encryption (ABE) system with short secret
keys: the size of keys in our system depends only on the depth of the policy circuit, not its size…

Graded multilinear encodings have found extensive applications in cryptography ranging from
non-interactive key exchange protocols, to broadcast and attribute-based encryption, and …

Blockchains are gaining traction and acceptance, not just for cryptocurrencies, but increasingly
as an architecture for distributed computing. In this work we seek solutions that allow a …

A fundamental question about (reusable) circuit garbling schemes is: how small can the
garbled circuit be? Our main result is a reusable garbling scheme which produces garbled …

… , Gentry, Halevi, Raykova, Sahai and Waters (GGHRSW) using the GGH13 graded encoding,
and its variant using the GGH15 graded encoding as specified by Gentry, Gorbunov and …

Graded multilinear encodings have found extensive applications in cryptography ranging from
non-interactive key exchange protocols, to broadcast and attribute-based encryption, and …

… Using similar techniques, we show how to compile a recent attribute-based encryption
scheme for circuits by Gorbunov et al. into an attribute-based FHE scheme that permits data …

We describe plausible lattice-based constructions with properties that approximate the
sought-after multilinear maps in hard-discrete-logarithm groups, and show an example …

… directly translate to the recent multilinear map framework of Garg, Gentry, and Halevi. …
Concurrent to and independent of our work Gorbunov, Vaikuntanathan, and Wee [GVW13] achieve …

Previously known functional encryption (FE) schemes for general circuits relied on
indistinguishability obfuscation, which in turn either relies on an exponential number of assumptions (…