Decentralized and Privacy-Preserving Public Auditing for Cloud Storage Based on Blockchain

Miao, Ying; Huang, Qiong; Xiao, Meiyan; Li, Hongbo

doi:10.1109/access.2020.3013153

Cited by 35 publications

(25 citation statements)

References 49 publications

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“…5.1.2.2 Privacy-Preserving Storage Storage: As outlined in [243], cloud storage systems allow for data to be outsourced flexibly and conveniently. The authors of [244] detail how deduplication allows for cloud storage to only need to keep one copy of a given file to reduce space usage.…”

Section: Privacy-preserving Physical Layermentioning

confidence: 99%

Privacy-Preserving Cloud Computing: Ecosystem, Life Cycle, Layered Architecture and Future Roadmap

Ahmadi¹,

Salehfar²

2022

Preprint

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Privacy-Preserving Cloud Computing is an emerging technology with many applications in various fields. Cloud computing is important because it allows for scalability, adaptability, and improved security. Likewise, privacy in cloud computing is important because it ensures that the integrity of data stored on the cloud maintains intact. This survey paper on privacy-preserving cloud computing can help pave the way for future research in related areas. This paper helps to identify existing trends by establishing a layered architecture along with a life cycle and an ecosystem for privacy-preserving cloud systems in addition to identifying the existing trends in research on this area.

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Section: Privacy-preserving Physical Layermentioning

confidence: 99%

Privacy-Preserving Cloud Computing: Ecosystem, Life Cycle, Layered Architecture and Future Roadmap

Ahmadi¹,

Salehfar²

2022

Preprint

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“…Their work is aimed at SLA and does not apply to storage audits for edge computing and the result submission may be delayed. Miao et al 31 proposed a mechanism to use block Hash to generate Challenges, but this method has no guarantee that the audit results cannot be tampered with off-chain. There are also some multi-auditor models based on the blockchain 29,32 ; however, their proof verifying process is in the smart contract or using proof of work in blockchain, which consumes excessive fees of the public blockchain or uses more verifying time.…”

Section: Auditing With Blockchainmentioning

confidence: 99%

Trusted audit with untrusted auditors: A decentralized data integrity Crowdauditing approach based on blockchain

Chen

Zhou

et al. 2021

Int J of Intelligent Sys

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Edge computing emerges as an alternative to cloud computing in the scenarios where the end devices require lower latency and faster access speeds. Edge nodes are deployed at the proximity of the end devices to reduce response time. On the other hand, the edge nodes are usually owned by small organizations that have limited operations and maintenance capabilities. Data on the edge may be easily damaged, due to external attacks or internal hardware failures. Therefore, it is essential to verify data integrity in edge computing. However, edge environment requires a different trust model compared with other computing and storage paradigm. Besides, compared with cloud storage, edge storage is decentralized and storage service participants may pose greater internal and external threats. This paper proposes a blockchain‐based intelligent crowdsourcing audit approach (Crowdauditing) to achieve on‐chain and off‐chain credibility of audit results. The model relies on an untrusted auditor committee from the crowd to audit data integrity and uses smart contracts as the core of the intelligent system to ensure the reliability of result submission, the accuracy of the result judgment, and reasonable punishments and rewards. Specifically, an unbiased selection algorithm is proposed to achieve fairness during the auditor committee construction. An innovative two‐stage submission strategy is proposed to ensure that the auditor committee can reach a consensus on the off‐chain audit results. An incentive mechanism is carefully designed to force auditors providing audit services honestly to maximize their own rewards. Moreover, we modeled that as a game of n players, which proves the reliability of the result. Finally, we implement a prototype of Crowdauditing based on smart contracts. The extensive experimental results demonstrate the effectiveness of Crowdauditing.

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“…Similarly, Huang et al [29] proposed a blockchain-based cooperative auditing framework for cloud data storage, which recorded auditing requests and results on blockchain in perpetuity. Miao et al [30] proposed a blockchain-based public verification scheme to achieve decentralization and privacy protection.…”

Section: Blockchain-based Data Integrity Verificationmentioning

confidence: 99%

Enabling Decentralized and Dynamic Data Integrity Verification for Secure Cloud Storage via T-Merkle Hash Tree Based Blockchain

Huang

Shi

et al. 2021

Mobile Information Systems

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Cloud storage provides elastic storage services for enterprises and individuals remotely. However, security problems such as data integrity are becoming a major obstacle. Recently, blockchain-based verification approaches have been extensively studied to get rid of a centralized third-party auditor. Most of these schemes suffer from poor scalability and low search efficiency and even fail to support data dynamic update operations on blockchain, which limits their large-scale and practical applications. In this work, we propose a blockchain-based dynamic data integrity verification scheme for cloud storage with T-Merkle hash tree. A decentralized scheme is proposed to eliminate the restrictions of previous centralized schemes. The data tags are generated by the technique of ZSS short signature and stored on blockchain. An improved verification method is designed to check the integrity of cloud data by transferring computation from a verifier to cloud server and blockchain. Furthermore, a storage structure called T-Merkle hash tree which is built based on T-tree and Merkle hash tree is designed to improve storage utilization of blockchain and support binary search on chain. Moreover, we achieve efficient and secure dynamic update operations on blockchain by an append-only manner. Besides, we extend our scheme to support batch verification to handle massive tasks simultaneously; thus, the efficiency is improved and communication cost is reduced. Finally, we implemented a prototype system based on Hyperledger Fabric to validate our scheme. Security analysis and performance studies show that the proposed scheme is secure and efficient.

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Decentralized and Privacy-Preserving Public Auditing for Cloud Storage Based on Blockchain

Cited by 35 publications

References 49 publications

Privacy-Preserving Cloud Computing: Ecosystem, Life Cycle, Layered Architecture and Future Roadmap

Privacy-Preserving Cloud Computing: Ecosystem, Life Cycle, Layered Architecture and Future Roadmap

Trusted audit with untrusted auditors: A decentralized data integrity Crowdauditing approach based on blockchain

Enabling Decentralized and Dynamic Data Integrity Verification for Secure Cloud Storage via T-Merkle Hash Tree Based Blockchain

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