Blockchain is an inspiring emerging technology that takes much attention from various
researchers and companies. The technology offers various benefits such as data security …

Renewable-energy resources require overwhelming adoption by the common masses for
safeguarding the environment from pollution. In this context, the prosumer is an important …

Critical infrastructure systems are vital to underpin the functioning of a society and economy.
Due to the ever-increasing number of Internet-connected Internet-of-Things (IoT)/Industrial …

According to different application scenarios of blockchain system, it is generally divided into
public chain, private chain and consortium chain. Consortium chain is a typical multi-center …

Ciphertext-policy attribute-based encryption (CP-ABE) is widely used in fine-grained access
control to achieve the secure data sharing. However, most of the existing CP-ABE access …

Consensus algorithms are applied in the context of distributed computer systems to improve
their fault tolerance. The explosive development of distributed ledger technology following …

Abstract Since the Practical Byzantine Fault Tolerance (PBFT) consensus mechanism can
avoid the performance bottleneck of blockchain systems caused by Proof of Work (PoW), it …

Nowadays Practical Byzantine Fault Tolerance (PBFT) algorithm has become the most
extensive consensus algorithm in the alliance chain. However, the PBFT algorithm is usually …

Power systems impose stringent security and delay requirements on computation offloading,
which cannot be satisfied by existing power Internet of Things (PIoT) networks. In this paper …

针对现有联盟链共识机制因可拓展性不足, 无法在支持大规模网络的同时满足低时延,
高吞吐量和安全性的问题, 采用网络分片的思想, 提出一种适用于联盟链的带有监督节点的两级 …