Data sharing technologies enable users to outsource data and privately share information
with arbitrary recipients without geographic barriers. However, existing efforts for secure …

Functional Encryption (FE) expands traditional public-key encryption in two different ways: it
supports fine-grained access control and allows learning a function of the encrypted data. In …

Functional encryption (FE for short) can be used to calculate a function output of a message,
without revealing other information about the message. There are mainly two types of …

In this work, we investigate the possibility of constructing function-hiding predicate functional
encryption (FH-P-FE), which provides full attribute-hiding and function-hiding securities …

Abstract Hidden Vector Encryption (HVE) is a new kind of attribute-based encryption in
which a vector is hidden in the ciphertext or linked with the secret key. In ESORICS 2014 …

Abstract Let S={1,\dots, n\} S= 1,⋯, n be a set of integers and X be a subset of S. We study
the boolean function f_X (Y) f X (Y) which outputs 1 if and only if Y is a small enough …

We define the membership function of a set as the function that determines whether an input
is an element of the set. Canetti, Rothblum, and Varia showed how to obfuscate evasive …

In a function-hiding inner product functional encryption (FH-IPFE) scheme, both secret keys
and ciphertexts are associated with vectors. Given a secret key for n-dimensional vector x …

We obfuscate the big subset and small superset functionalities in a very simple way. We
prove both VBB and input-hiding in the standard model based on the subset product …

When focusing on modern conditions in the field of processing heterogeneous data based
on a situation-oriented approach, the task of using information systems with implemented …