CloudPoS: A Proof-of-Stake Consensus Design for Blockchain Integrated Cloud

Maintaining data provenance in cloud in a tamper-resistant manner that cannot be breached by malicious parties is a necessity from the current security standpoint. Blockchain technology has emerged as a secure solution to store and share information by offering an immutable distributed ledger servic...

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Bibliographic Details
Published in2018 IEEE 11th International Conference on Cloud Computing (CLOUD) pp. 302 - 309
Main Authors Tosh, Deepak, Shetty, Sachin, Foytik, Peter, Kamhoua, Charles, Njilla, Laurent
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2018
Subjects
Blockchain
Cloud computing
Computational modeling
Computer architecture
Data provenance
Distributed consensus
Peer-to-peer computing
Proof-of-stake
Proof-of-work
Protocols
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Summary:Maintaining data provenance in cloud in a tamper-resistant manner that cannot be breached by malicious parties is a necessity from the current security standpoint. Blockchain technology has emerged as a secure solution to store and share information by offering an immutable distributed ledger service. Its effectiveness hinges on the infrastructure supporting the distributed ledger and consensus protocol that governs the validity of entries in the Blockchain. Hence, Blockchain can be a potential candidate to implement data provenance; however, traditional cryptocurrency-based consensus models become a bottleneck in the cloud environment. Therefore, in this paper, we propose a Blockchain based data provenance architecture (BlockCloud) that incorporates a proof-of-stake (PoS)-based consensus protocol (CloudPoS) for securely recording the data operations occurring in cloud environment. The critical operational phases of the protocol are discussed in depth, which leverages the cloud users' cyber infrastructure resources. A cloud-based testbed environment is created using a local cluster of physical machines managed by Xen hypervisor. Resource elasticity is enabled using Kubernetes setup that interacts with the dockerized containers, which emulate as peers in the Blockchain network. We then evaluate the effectiveness of the protocol in a simulated environment and conduct performance tests of the proposed consensus.
ISSN:2159-6190
DOI:10.1109/CLOUD.2018.00045