The blockchain technology has revolutionized the digital currency space with the pioneering
cryptocurrency platform named Bitcoin. From an abstract perspective, a blockchain is a …

Abstract In the Internet of Things (IoT) vision, conventional devices become smart and
autonomous. This vision is turning into a reality thanks to advances in technology, but there …

The drastically increasing volume and the growing trend on the types of data have brought
in the possibility of realizing advanced applications such as enhanced driving safety, and …

This paper presents a comprehensive survey of the existing blockchain protocols for the
Internet of Things (IoT) networks. We start by describing the blockchains and summarizing …

In traditional cloud storage systems, attribute-based encryption (ABE) is regarded as an
important technology for solving the problem of data privacy and fine-grained access control …

The Internet of Things (IoT) is stepping out of its infancy into full maturity and establishing
itself as a part of the future Internet. One of the technical challenges of having billions of …

Electronic health record sharing can help to improve the accuracy of diagnosis, where
security and privacy preservation are critical issues in the systems. In recent years …

Interoperability in healthcare has traditionally been focused around data exchange between
business entities, for example, different hospital systems. However, there has been a recent …

This paper investigates a critical access control issue in the Internet of Things (IoT). In
particular, we propose a smart contract-based framework, which consists of multiple access …

Generation from distributed renewable energy sources is constantly increasing. Due to its
volatility, the integration of this non-controllable generation poses severe challenges to the …