PerfectDedup: Secure Data Deduplication

Puzio, Pasquale; Molva, Refik; Önen, Melek; Loureiro, Sergio

doi:10.1007/978-3-319-29883-2_10

Cited by 31 publications

(27 citation statements)

References 17 publications

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“…In addition, multiple users uploading data at the same time can result in bottlenecks. To address this issue, client-side deduplication (CSD) technology was proposed [3,4].…”

Section: Data Deduplication Methodsmentioning

confidence: 99%

“…The user sends , 3 , to the metadata server. In addition, ownership group renewals are performed on the server.…”

Section: Data Upload Phase (Subsequent Upload)mentioning

confidence: 99%

“…• Integrity: Once the data has been downloaded, the user can determine whether the downloaded data has been converted by checking the RCE tag. This process allows the user to perform hash operations using an encryption key that can obtain and verify data ℎ , creating 3 , as shown in (19).…”

Section: Analysis Of Proposed Schemementioning

confidence: 99%

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Secure and Efficient Storage of Video Data in a CCTV Environment

2019

KSII TIIS

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Closed-circuit television (CCTV) technology continuously captures and stores video streams. Users are typically required by policy to store all the captured video for a certain period. Accordingly, increasing the number of CCTV operation cycles and photographing positions expands the amount of data to be stored. However, expanding the available storage space for video data incurs increased costs. In recent years, this problem has been addressed with cloud storage solutions, which enable multiple users and devices to access and store data simultaneously. However, because of the large amount of data to be stored, a vast storage space is required. Consequently, cloud storage administrators need a way to store data more efficiently. To save storage space, deduplication technology has been proposed to prevent duplicate storage of the same data. However, because cloud storage is hosted on remote servers, data encryption technology must be applied to address data exposure issues. Although deduplication techniques for encrypted data have been studied, there have been various security vulnerabilities. We attempted to solve this problem by addressing various issues such as poison attacks, property forgery, and ownership management while removing the redundant data and handling the data more securely.

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“…In addition, multiple users uploading data at the same time can result in bottlenecks. To address this issue, client-side deduplication (CSD) technology was proposed [3,4].…”

Section: Data Deduplication Methodsmentioning

confidence: 99%

“…The user sends , 3 , to the metadata server. In addition, ownership group renewals are performed on the server.…”

Section: Data Upload Phase (Subsequent Upload)mentioning

confidence: 99%

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Secure and Efficient Storage of Video Data in a CCTV Environment

2019

KSII TIIS

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“…Y.L.He et al proposed an similar scheme which is aware of data popularity [17]. P. Puzio proposed the PerfectDedup scheme [6], using a full hash function to query the privacy level of data through trusted third parties. Similar to the method in Stanek's work, in PerfectDedup, data of low privacy are protected with CE; data of high privacy are protected with traditional symmetric encryption.…”

Section: B Deduplication With Third Partiesmentioning

confidence: 99%

SecDedup: Secure Encrypted Data Deduplication With Dynamic Ownership Updating

2020

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Deduplication eliminates duplicated data copies and reduces storage costs of cloud service providers. However, deduplication of encrypted data is difficult. Current solutions rely heavily on trusted third parties, and do not address the popularity of data, resulting in unsatisfying security and efficiency. A secure encrypted data deduplication scheme based on data popularity is proposed. Check tags are calculated via bilinear mapping to determine whether different encrypted data originate from the same plaintext. Ciphertext policy attribute-based encryption is applied to protect the tags. A secure key delivery scheme is designed to pass the data encryption key from an initial data uploader to subsequent uploaders via the cloud server in an offline manner. The cloud server can perform deduplication without the assistance of any online third party. Security analysis and simulation experiments are provided, proving the practicability and efficiency of the proposed scheme. INDEX TERMS Deduplication, proxy re-encryption, bilinear mapping, data ownership update.

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“…The cloud server only performs deduplication on popular data, which better protects data privacy while improving the efficiency. The PerfectDedup scheme was proposed by Puzio et al They used perfect hash function 18 to query the popularity of data with the assistance of a trusted third party. However, the introduction of a trusted third party increases the communication overhead of the CSP, and it causes new security risks.…”

Section: Introductionmentioning

confidence: 99%

Secure data deduplication for Internet-of-things sensor networks based on threshold dynamic adjustment

Gao

Xian

2020

International Journal of Distributed Sensor Networks

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Large amount of data are being produce by Internet-of-things sensor networks and applications. Secure and efficient deduplication of Internet-of-things data in the cloud is vital to the prevalence of Internet-of-things applications. In order to ensure data security for deduplication, different data should be assigned with different privacy levels. We propose a deduplication scheme based on threshold dynamic adjustment to ensure the security of data uploading and related operations. The concept of the ideal threshold is introduced for the first time, which can be used to eliminate the drawbacks of the fixed threshold in traditional schemes. The item response theory is adopted to determine the sensitivity of different data and their privacy score, which ensures the applicability of data privacy score. It can solve the problem that some users care little about the privacy issue. We propose a privacy score query and response mechanism based on data encryption. On this basis, the dynamic adjustment method of the popularity threshold is designed for data uploading. Experiment results and analysis show that the proposed scheme based on threshold dynamic adjustment has decent scalability and practicability.

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PerfectDedup: Secure Data Deduplication

Cited by 31 publications

References 17 publications

Secure and Efficient Storage of Video Data in a CCTV Environment

Secure and Efficient Storage of Video Data in a CCTV Environment

SecDedup: Secure Encrypted Data Deduplication With Dynamic Ownership Updating

Secure data deduplication for Internet-of-things sensor networks based on threshold dynamic adjustment

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