دانلود رایگان مقاله انگلیسی حسابرسی یکپارچه داده های نسبی ابری برای ذخیره سازی برون سپاری امن - IEEE 2017

Abstract

Outsourced storage such as cloud storage can significantly reduce the burden of data management of data owners. Despite of a long list of merits of cloud storage, it triggers many security risks at the same time. Data integrity, one of the most burning challenges in secure cloud storage, is a fundamental and pivotal element in outsourcing services.Outsourced data auditing protocols enable a verifier to efficiently check the integrity of the outsourced files without downloading the entire file from the cloud, which can dramatically reduce the communication overhead between the cloud server and the verifier. Existing protocols are mostly based on public key infrastructure or an exact identity, which lacks flexibility of key management. In this paper, we seek to address the complex key management challenge in cloud data integrity checking by introducing attribute-based cloud data auditing, where users can upload files to cloud through some customized attribute set and specify some designated auditor set to check the integrity of the outsourced data. We formalize the system model and the security model for this new primitive, and describe a concrete construction of attribute-based cloud data integrity auditing protocol. The new protocol offers desirable properties namely attribute privacy-preserving and collusion-resistance. We prove soundness of our protocol based on the computational Diffie-Hellman assumption and the discrete logarithm assumption. Finally, we develop a prototype of the protocol which demonstrates the practicality of the protocol.

7 CONCLUSION

In the past few years, cloud data integrity has drawn much attention from both academia and industry. In this paper, we propose an attribute-based cloud data integrity auditing protocol, for the first time, to simplify the key management issue in traditional cloud data auditing schemes. We formalize the system model and security model for this new primitive. Subsequently, a concrete construction is presented by involving the idea of attribute-based cryptography. The proposed protocol can achieve the property of soundness, attribute privacy-preserving and collusion resistance. We prove the soundness of the protocol under Shacham-Waters game-based proof framework. The imple-mentation illustrates the practicality and efficiency of the new proposal.