Multiple TPA for Extensive Reliability and Security in Cloud Storage
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International Journal on Recent and Innovation Trends in Computing and Communication 3 (4): 2349--2352 (April 2015)

This paper focuses on the security and integrity of data hold on cloud data servers. The data integrity verification is finished by employing a third party auditor who is authorized to check integrity of data sporadically on behalf of client. The way application software and databases are stored has been modified. Currently they are stored in cloud data centers in which security is an apprehension from client point of view. The new development which is used to store and manage data without principal investment has brought many security challenges which are not thoroughly understood. Customer data from third party auditor notices of when data integrity is lost. The proposed system not only supports data integrity verification but also supports data mobility. Prior work has been done in this online data mobility and there is lack of true public auditability. Auditor task is to monitor data modifications like insert and remove. The proposed system is able to support both public auditability and data mobility. Problems with existing systems literature review has revealed that the motivation behind this work take up. Merkle hash tree block-level authentication is used to improve. Auditing functions to handle together Bilinear transform overall signature is used. The TPA for multiple clients concurrently enables audit. So here we evaluate the TPA based multi-user system. Experiments show that the proposed system is also very efficient and safe. For proposed work we are using multiple TPA's and multiple clients.
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