期刊
IEEE INTERNET OF THINGS JOURNAL
卷 7, 期 5, 页码 4143-4154出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2019.2963789
关键词
Cloud computing; Protocols; Security; Smart cities; Internet of Things; Memory; Information and communication technology; Blockchain; Internet of Things (IoT); outsourcing storage; smart contract
资金
- National Key Research Development Program of China [2017YFB0802000]
- National Natural Science Foundation of China [61872229, U19B2021, 61960206014]
- National Cryptography Development Fund during the 13th Five-Year Plan Period [MMJJ20170216]
Smart cities have experienced rapid development with the advances of information and communication technologies such as Internet of Things (IoT). To tackle the data storage issues raised by large-scale data generated by IoT devices, an increasing number of enterprises and individuals prefer to outsource their data to cloud, where data integrity becomes a concern to cloud users. A variety of provable data possession (PDP) protocols have been proposed for centralized cloud storage scenarios so far. However, a centralized cloud relies too much on the trust of the central servers and, thus, is prone to the single point of failure. In this article, we describe a blockchain-based PDP model to realize the decentralized outsourcing storage framework, and then present a concrete construction of decentralized PDP by using multireplica storage tricks. Moreover, our protocol provides dynamic operations for outsourced data and at the same time, guarantees the fairness of all parties involved. We provide a detailed security proof for the proposed protocol and deploy a smart contract for the protocols as well. We finally evaluate the algorithms and the implementation results demonstrate the practicability of the proposed protocol.
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