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Efficient Distributed Access Control Using Blockchain for Big Data in Clouds

Authors:
Oussama Mounnan
Anas Abou Elkalam

Keywords: access control; encryption; blockchain; cloud; CP-ABE.

Abstract:
Big Data is a growing concept, offering us opportunities, that were not available before in many fields. However security and privacy issues are magnified by large amounts of heterogenous data. Ciphertext-Policy Attribute Based Encryption is a promising cryptographic primitive for the security of cloud storage system, which can bring fine-grained access control. The blockchain is a distributed ledger that records transactions in a secure, flexible, verifiable and permanent way. In this paper, we propose a distributed, scalable and fine-grained access control scheme with efficient decryption for the Big Data in clouds. Blockchain technology is used to manage identities and provide the authentication, store and execute a smart contract that incorporates the contextual and detailed access policy defined by the data owner, which is triggered by an access requester, that gives data owners the sovereign right to effectively manage their data sets and manage the policy. We also used the ciphertext-Policy Attribute Based Encryption scheme for supporting the efficient decryption outsourcing as another security layer for managing the policy. The analysis shows that our scheme is correct, complete, secure and efficient.

Pages: 53 to 62

Copyright: Copyright (c) IARIA, 2019

Publication date: June 30, 2019

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-719-1

Location: Rome, Italy

Dates: from June 30, 2019 to July 4, 2019