Visible to the public A Blockchain-Based Secure Cloud Files Sharing Scheme with Fine-Grained Access Control

TitleA Blockchain-Based Secure Cloud Files Sharing Scheme with Fine-Grained Access Control
Publication TypeConference Paper
Year of Publication2018
AuthorsLiu, Y., Zhang, J., Gao, Q.
Conference Name2018 International Conference on Networking and Network Applications (NaNA)
Date Publishedoct
ISBN Number978-1-5386-8303-3
KeywordsAccess Control, authorisation, blockchain, blockchain technology, blockchain-based secure cloud file sharing scheme, blockchains, ciphertext-policy attribute based encryption, cloud computing, cloud server, cloud service provider, cloud storage, composability, CP-ABE, cryptography, data integrity, Data security, decentralized safety administration, Distributed databases, Encryption, fine-grained data access control, Human Behavior, human factors, Metrics, outsourcing, outsourcing data, Peer-to-peer computing, pubcrawl, resilience, Resiliency, Safety, Secure File Sharing, security analysis

As cloud services greatly facilitate file sharing online, there's been a growing awareness of the security challenges brought by outsourcing data to a third party. Traditionally, the centralized management of cloud service provider brings about safety issues because the third party is only semi-trusted by clients. Besides, it causes trouble for sharing online data conveniently. In this paper, the blockchain technology is utilized for decentralized safety administration and provide more user-friendly service. Apart from that, Ciphertext-Policy Attribute Based Encryption is introduced as an effective tool to realize fine-grained data access control of the stored files. Meanwhile, the security analysis proves the confidentiality and integrity of the data stored in the cloud server. Finally, we evaluate the performance of computation overhead of our system.

Citation Keyliu_blockchain-based_2018