In this paper, we present new adaptively secure identity-based encryption (IBE) schemes.
One of the distinguishing properties of the schemes is that it achieves shorter public …

In this paper, we focus on the constructions of adaptively secure identity-based encryption
(IBE) from lattices and verifiable random function (VRF) with large input spaces. Existing …

Constructing short signatures with tight security from standard assumptions is a long-
standing open problem. We present an adaptively secure, short (and stateless) signature …

Driven by the open problem raised by Hofheinz and Kiltz 34, we study the formalization of
lattice-based programmable hash function (PHF), and give two types of constructions by …

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

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 …

An identity-based encryption scheme enables the efficient distribution of keys in a multi-user
system. Such schemes are particularly attractive in resource constrained environments …

One of the most expensive processes inside Public-Key Infrastructure (PKI) is certificate
management. Identity-based Encryption (IBE) is seen as an alternative to alleviate the …

Basic encryption and signature on lattices have comparable efficiency to their classical
counterparts in terms of speed and key size. However, Identity-based Encryption (IBE) on …

We construct more efficient cryptosystems with provable security against adaptive attacks,
based on simple and natural hardness assumptions in the standard model. Concretely, we …