International Journal of Soft Computing and Engineering

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Date	26.12.2021
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A0540032113
A0540032113, A0540032113, A0540032113, A0540032113

V. PROBLEM STATEMENT

IV. CHARACTERISTICS
Cloud computing includes four basic characteristics
On-demand self service: Computing capabilities is provisioned automatically.
Broad network access Capabilities available over the net using desktop, laptop and mobile phone.
Resource pooling: Computing resources provided are pooled together to serve multiple clients.
Rapid elasticity: Capability to quickly in or out provisioning services.
Measured services: Automatically control and optimize resources based on metering capabilities.
V. PROBLEM STATEMENT
Cloud data storage service includes the user(U), who has the large data to be stored in cloud the cloud server(CS), managed by cloud service provider(CSP) with significant storage the
Privacy-Preserving Public Auditing In Cloud Using HMAC Algorithm
S.Ezhil Arasu, B.Gowri, S.Ananthi

Privacy-Preserving Public Auditing in Cloud Using HMAC Algorithm
150
Retrieval Number A /2013©BEIESP
Published By
Blue Eyes Intelligence Engineering
& Sciences Publication
third party auditor(TPA), trusted to access the CSP according to users request. When user store the data, the copy is sent to both the CSP and TPA. To verify the correctness of data stored in cloud, auditing process is done. Here the auditing process is carried out TPA, it must efficiently audit without bringing any changes to the original data. For auditing, the data which is in TPA is used.
Public auditability: Allow the TPA to verify the correctness of data without demanding the copy of data.
Privacy preserving: To ensure that TPA cannot retrieve the data content during the auditing process.
Lightweight: To allow TPA to perform auditing with minimum communication and computation overhead.

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