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sentenceTo take the complexity out of managing the IT infrastructure, the storage outsourcing has become the popular option. Cloud is generating much more excitement than traditional outsourcing and promotes the secure remote data auditing in the recent trends. However, the outsourced data in the cloud and the computation results are not always trustworthy. The recent techniques to solve the problem of secure and efficient public data integrity auditing for shared dynamic data are still not secure against the collusion i.e, the illegal agreement of the cloud storage server and the group user repudiation in practical cloud storage system. Hence, to prevent the collusion attack in the existing scheme and to provide an efficient global integrity auditing, the group user repudiation is performed based on vector commitment and group signature is generated with multinomial algorithm. The group user data is encrypted using block ciphers and the asymmetric encryption technique is used. The security policies such as confidentiality, efficiency and traceability are successfully achieved in the proposed scheme. The experimental analysis shows that, the proposed system is more secure and efficient when compared to the existing schemes.
Subject: Computer Science
Usage Frequency: 1
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