Witness encryption (WE), first introduced by Garg, Gentry, Sahai and Waters in, is an
encryption scheme where messages are encrypted with respect to instances of an NP …

An increasing number of people are sharing their data through third-party platforms. Attribute-
based encryption (ABE) is a promising primitive that allows enforcing fine-grained access …

Abstract Attribute Based Encryption (ABE) can be employed to enforce fine grained access
control over encrypted data. Due to expressiveness, ABE schemes are currently employed …

We construct the first decentralized multi-authority attribute-based encryption (MA-ABE)
scheme for a non-trivial class of access policies whose security is based (in the random …

We present improved algorithms for gaussian preimage sampling using the lattice trapdoors
of (Micciancio and Peikert, CRYPTO 2012). The MP12 work only offered a highly optimized …

Motivated by several new and natural applications, we initiate the study of multi-input
predicate encryption (miPE) and further develop multi-input attribute based encryption …

We present new lattice-based attribute-based encryption (ABE) and laconic function
evaluation (LFE) schemes for circuits with sublinear ciphertext overhead. For depth d circuits …

We present simpler and improved constructions of unbounded attribute-based encryption
(ABE) schemes with constant-size public parameters under static assumptions in bilinear …

Although we have known about fully homomorphic encryption (FHE) from circular security
assumptions for over a decade [Gentry, FOCS'10; Brakerski-Vaikuntanathan, STOC'11] …

Abstract Attribute-based Encryption (ABE), first introduced by [SW05, GPSW06], is a public
key encryption system that can support multiple users with varying decryption permissions …