A Secure and Practical Blockchain Scheme for IoT
With features such as decentralization,consistency,tamper resistance,non-repudiation and pseudonym,blockchain technology has the potential to strengthen Internet of Things(IoT)significantly,thus opening an intriguing research area in the integration of blockchain and IoT.However,most existing blockchain schemes were not dedicated to the IoT ecosystem and hence could not meet the specific requirements of IoT.We aim to fix the gap in this paper.Inspired by Chainspace,a blockchain platform which could be adopted in IoT,we propose VChain,a novel blockchain scheme suitable for IoT which is more secure,concrete and practical compared with Chainspace.Specifically,in VChain,we design a two-layer BFTbased consensus protocol with HoneyBadger BFT protocol and a collective signature scheme as building blocks.This allows for supporting faulty-shards-tolerance and asynchronous network model which could not be sustained in Chainspace and keeping high efficiency as well.Moreover,the sharding strategy presented in VChain,different from that in RapidChain which adopts the energy-consuming PoW mechanism for sharding,is environmentfriendly and thus makes VChain fit for IoT well.Last but not least,VChain also inherits the merits of Chainspace to separate the execution and verification of smart contracts for privacy.
Blockchain IoT Sharding Two-Layer BFT
Hongyang Liu Feng Shen Zhiqiang Liu Yu Long Zhen Liu Shifeng Sun Shuyang Tang Dawu Gu
School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai,China
国内会议
上海
英文
76-83
2019-05-17（万方平台首次上网日期，不代表论文的发表时间）