A Novel Technique for Auditing Through Key Exposure on Cloud Storage

M.Prasoona; I.Kavitha Jackleen

A Novel Technique for Auditing Through Key Exposure on Cloud Storage

Authors: M.Prasoona, I.Kavitha Jackleen

Unique Paper ID: 146546
Volume: 4
Issue: 12
PageNo: 861-868

Keywords: Cloud storage outsourcing computing cloud storage auditing key update verifiability.

Abstract:
Key-exposure resistance has always been an important issue for in-depth cyber defence in many security applications. Recently, how to deal with the key exposure problem in the settings of cloud storage auditing has been proposed and studied. To address the challenge, existing solutions all require the client to update his secret keys in every time period, which may inevitably bring in new local burdens to the client, especially those with limited computation resources, such as mobile phones. In this paper, we focus on how to make the key updates as transparent as possible for the client and propose a new paradigm called cloud storage auditing with verifiable outsourcing of key updates. In this paradigm, key updates can be safely outsourced to some authorized party, and thus the key-update burden on the client will be kept minimal. In particular, we leverage the third party auditor (TPA) in many existing public auditing designs, let it play the role of authorized party in our case, and make it in charge of both the storage auditing and the secure key updates for keyexposure resistance. In our design, TPA only needs to hold an encrypted version of the clientâ€™s secret key while doing all these burdensome tasks on behalf of the client. The client only needs to download the encrypted secret key from the TPA when uploading new files to cloud. Besides, our design also equips the client with capability to further verify the validity of the encrypted secret keys provided by the TPA. All these salient features are carefully designed to make the whole auditing procedure with key exposure resistance as transparent as possible for the client. We formalize the definition and the security model of this paradigm. The security proof and the performance simulation show that our detailed design instantiations are secure and efficient.

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Cite This Article

ISSN: 2349-6002
Volume: 4
Issue: 12
PageNo: 861-868

A Novel Technique for Auditing Through Key Exposure on Cloud Storage

Available:https://ijirt.org/Article?manuscript=146546

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