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                "abstract": {
                    "value": "Cloud Storage is a computer data storage method where digital data is stored on servers in off-site locations, managed by a third-party provider. This enables organizations to store, access, and maintain data without owning and operating their own data centers. Cloud storage is scalable, allowing organizations to expand or reduce their data footprint depending on their needs. Users upload data to servers via internet, which is saved on a virtual machine on a physical server. Cloud providers often spread data to multiple virtual machines in global data centers to maintain availability and redundancy. Google Cloud offers various scalable options for organizations to store their data in the cloud. The widespread use of cloud computing has made data sharing and storage more accessible, but concerns about data integrity, efficiency, and privacy remain. Duplication, a popular method of data compression, is used to reduce duplicate copies of data in cloud storage. However, data duplication also raises security and privacy concerns, as users' confidential data is vulnerable to attacks from insiders and outsiders. Traditional solutions for duplication, based on convergent encryption, provide confidentiality but do not maintain duplicate checks based on differential permissions. This paper proposes an approved data duplication plan that counts the number of users with differential privileges in the duplicate check.Users with differential privileges are added to the duplicate check, and files are encrypted with differential privilege keys to maintain stronger security. Users can only access files marked with matching privileges for copy checks. A third-party auditor can confirm file occurrence after duplication in the cloud, ensuring timely uploads. This paper offers advantages for both storage providers and users through duplication systems and auditing methods",
                    "lang": "en"
                },
                "license": {
                    "url": "https://creativecommons.org/licenses/by/4.0",
                    "start": "2023-08-07",
                    "applies_to": "vor"
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                        "doi": "10.1007/978-3-662-45472-5_8",
                        "unstructured": "J. Stanek, A. Sorniotti, E. Androulaki, and L. Kencl, “A secure data duplication scheme for cloud storage,” in Financial Cryptography and Data Security-18th International Conference, FC 2014, Christ Church, Barbados, March 3-7, 2014, Revised Selected Papers, 2014, pp. 99–118"
                    },
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                        "key": "ref2",
                        "unstructured": "S. Keelveedhi, M. Bellare, and T. Ristenpart, “Dupless: Server-aided encryption for deduplicated storage,” in Proceedings of the 22th USENIX Security Symposium, Washington, DC, USA, August 14-16, 2013, 2013, pp. 179–194"
                    },
                    {
                        "key": "ref3",
                        "doi": "10.1007/978-3-642-38348-9_18",
                        "unstructured": "M. Bellare, S. Keelveedhi, and T. Ristenpart, “Message-locked encryption and secure duplication,” in Advances in Cryptology-EUROCRYPT 2013, 32nd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Athens, Greece, May 26-30, 2013"
                    },
                    {
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                    },
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                        "key": "ref5",
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                        "unstructured": "M. W. Storer, K. M. Greenan, D. D. E. Long, and E. L. Miller, “Secure data duplication,” in Proceedings of the 2008 ACM Workshop on Storage Security and Survivability, StorageSS 2008,Alexandria, VA, USA, October 31, 2008, 2008, pp. 1–10"
                    },
                    {
                        "key": "ref6",
                        "doi": "10.1109/tbdata.2017.2721444",
                        "unstructured": "X. Yang, R. Lu, K. K. R. Choo, F. Yin and X. Tang, “Achieving Efficient and Privacy-Preserving Cross-Domain Big Data Deduplication in Cloud,” in IEEE Transactions on Big Data, vol. 8, no. 1, pp. 73-84, 1 Feb. 2022, doi: 10.1109/ TBDATA.2017.2721444"
                    },
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                        "key": "ref7",
                        "doi": "10.1007/s10586-022-03785-y",
                        "unstructured": "Wang, Z., Gao, W., Yang, M. et al. Enabling Secure Data sharing with data deduplication and sensitive information hiding in cloud-assisted Electronic Medical Systems. Cluster Comput (2022)https://doi.org/10.1007/s10586-022- 03785-yLiang, X., Yan, Z., Chen, X., Yang, L. T., Lou, W., & Hou, T. (2019). Game Theoretical Analysis on Encrypted Cloud Data Deduplication. IEEE Transactions on Industrial Informatics, 15(10), 5778- 5789. https://doi.org/10.1109/ TII.2019.2920402"
                    },
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                        "key": "ref8",
                        "doi": "10.1109/tii.2019.2920402",
                        "unstructured": "Liang, X., Yan, Z., Chen, X., Yang, L. T., Lou, W., & Hou, T. (2019). Game Theoretical Analysis on Encrypted Cloud Data Deduplication. IEEE Transactions on Industrial Informatics, 15(10), 5778- 5789. https://doi.org/10.1109/ TII.2019.2920402"
                    },
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                        "key": "ref9",
                        "doi": "10.1155/2020/3046595",
                        "unstructured": "Youngjoo Shin, Junbeom Hur, Dongyoung Koo, Joobeom Yun, “Toward Serverless and Efficient Encrypted Deduplication in Mobile Cloud Computing Environments”, Security and Communication Networks, vol. 2020, Article ID 3046595, 15 pages, 2020. https://doi. org/10.1155/2020/3046595"
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                        "key": "ref10",
                        "doi": "10.1007/978-3-319-65482-9_20",
                        "unstructured": "DING, Wenxiu; YAN, Zheng; and DENG, Robert H.. Secure encrypted data deduplication with ownership proof and user revocation. (2017). Algorithms and architectures for parallel processing: 17th International Conference ICA3PP 2017, Helsinki, Finland, August 21- 23, Proceedings. 297-312. Research Collection School Of Information Systems. Available at: https://ink.library.smu.edu.sg/sis_researc h/3788"
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