期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：2(Version 2)
出版社：Ayushmaan Technologies
摘要：Cloud computing is a internet based computing which enables sharing of services. Many users place their data in the cloud, so correctness of data and security is a prime concern. This work studies the problem of ensuring the integrity and security of data storage in Cloud Computing. Security in cloud is achieved by signing the data block before sending to the cloud. Signing is performed using BLS algorithm which is more secure compared to other algorithms. To ensure the correctness of data, we consider the task of allowing a third party auditor (TPA), on behalf of the cloud client, to verify the integrity of the data stored in the cloud. By utilizing public key based homomorphic authenticator with random masking privacy preserving public auditing can be achieved. The technique of bilinear aggregate signature is used to achieve batch auditing. Batch auditing reduces the computation overhead. As the data in the cloud is used by many industries, modification of data cannot be avoided. Unlike most prior works, the new scheme further supports secure and efficient dynamic operations on data blocks, including: data update, delete and append. We explore the efficient technique for error correction called reed Solomon technique which ensures the correctness of data.
关键词：Third Party Auditor; Boneh–Lynn–Shacham; Bilinear aggregate;signature; Reed Solomon technique.lation.
