Big data drive multidimensional convergence and profound innovations among industries
and provide novel ways of exploring the world. As they significantly create economic and …

Public-key encryption with keyword search (PEKS) does not provide trapdoor privacy, ie,
keyword information is leaked through trapdoors. To prevent this information leakage, public …

Multi-client functional encryption (MCFE) allows ℓ clients to encrypt ciphertexts (C _ t, 1, C _
t, 2, ..., C _ t, ℓ) under some label. Each client can encrypt his own data X_i for a label t using …

In this work, we study hybrid exact/relaxed zero-knowledge proofs from lattices, where the
proved relation is exact in one part and relaxed in the other. Such proofs arise in important …

A revocable identity-based encryption (RIBE) scheme, proposed by Boldyreva et al.,
provides a revocation functionality for managing a number of users dynamically and …

In this paper, we introduce the family DeuringVRF y, z of Verifiable Random Function (VRF)
protocols. Based on isogenies between supersingular curves, the random function at the …

Revocable identity-based encryption (RIBE) is an extension of IBE which can support a key
revocation mechanism, and it is important when deploying an IBE system in practice. Boneh …

Public key encryption with equality test (PKEET) allows testing whether two ciphertexts are
generated by the same message or not. PKEET is a potential candidate for many practical …

A trustworthy source of randomness is a crucial component of many decentralized and
crypto-based application systems, especially blockchain consensus. A decentralized …

Constrained pseudorandom functions (CPRFs) allow learning “constrained” PRF keys that
can evaluate the PRF on a subset of the input space, or based on some predicate. First …