Hierarchical attribute-based encryption with continuous auxiliary inputs leakage

Abstract

The continuous auxiliary inputs leakage is more strong side-channel attacks. In this article, we first propose a continuous auxiliary inputs leakage model for the hierarchical attribute-based encryption scheme. Under the security model, an adversary has ability to gain partial updated master keys and updated secret keys continually by certain leakage attacks. Moreover, a resilient-leakage hierarchical attribute-based encryption scheme is constructed. The security proof for this scheme is provided under the standard model. Furthermore, we give the performance comparison between our scheme and relevant scheme. Copyright © 2016 John Wiley & Sons, Ltd.