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LDuAP: lightweight dual auditing protocol to verify data integrity in cloud storage servers

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Abstract

Cloud Service Providers (CSP) allow the users to store their data in the cloud storage servers. However, outsourcing the confidential data increases the security vulnerabilities as the data owner loses the physical on-premise control over the data. In order to verify the integrity of the outsourced data, auditing has to be performed frequently. Existing public auditing schemes completely depend on the third party auditor (TPA) to verify the integrity. If the trustworthiness of the TPA is compromised, then the TPA might send the fraudulent integrity result to the data owners. Existing schemes does not possess cross verification procedures to overcome the trust issues associated with the TPA. In addition, most of the existing public auditing schemes use RSA and BLS signatures to verify the authenticity of the data owner. Due to large key size, the computation time to perform auditing remains high. To overcome these issues, an LDuAP (lightweight dual auditing protocol) based on the Cramer-Shoup cryptosystem has been proposed. It combines both public and private auditing schemes to improve the authenticity of the integrity results. Initially, a lightweight public auditing is performed for all the data blocks stored in the cloud. Later, to cross-verify the integrity results generated by the TPA, private auditing is performed. The proposed scheme reduces the size of the signature by 50% and subsequently reduces the overhead of the entire auditing scheme. The extensive implementation assessments and security analysis exhibit the legitimacy and efficiency of the proposed scheme.

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Acknowledgements

This research work was financially support by Science and Engineering Research Board (SERB), Department of Science and Technology, Government of India (Grant number: ECR/2016/000546).

Funding

This research work was financially supported by Science and Engineering Research Board (SERB), Department of Science and Technology, Government of India under the research Grant number ECR/2016/000546.

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Correspondence to Mohamed Sirajudeen Yoosuf.

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Yoosuf, M.S., Anitha, R. LDuAP: lightweight dual auditing protocol to verify data integrity in cloud storage servers. J Ambient Intell Human Comput 13, 3787–3805 (2022). https://doi.org/10.1007/s12652-021-03321-7

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  • DOI: https://doi.org/10.1007/s12652-021-03321-7

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