Privacy-Preserving Public Auditingfor Shared data With Efficient User Revocation
Alabazar Ramesh, V.Sujatha
Public auditing, privacy-preserving, shared data, cloud computing
Users in a particular group need to compute signatures on the blocks in shared data,so that the shared data integrity can be confirmed publicly,.Various blocks in shared data are usually signed by various vast number of users due to data alterations performed by different users. Once a user is revoked from the group, an existing user must resign the data blocks of the revoked user in order to ensure the security of data. Due to the massive size of shared data in the cloud, the usual process, which permits an existing user to download the corresponding part of shared data and re-sign it during user revocation, is inefficient.With our mechanism, the identity of the signer oneach block in shared data is kept private from public verifiers, who are able to efficiently verify shared data integrity without retrievingthe entire file. In addition, our mechanism is able to perform multiple auditing tasks simultaneously instead of verifying them one by one.Our experimental results demonstrate the effectiveness and efficiency of our mechanism when auditing shared data integrity.
Article Details
Unique Paper ID: 142517

Publication Volume & Issue: Volume 2, Issue 2

Page(s): 232 - 236
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