Distributed query execution under access restrictions

Vimercati, Sabrina De Capitani di; Foresti, Sara; Jajodia, Sushil; Livraga, Giovanni; Paraboschi, Stefano; Samarati, Pierangela

doi:10.1016/j.cose.2022.103056

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Selective Encryption1

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2023

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“…The encrypted resource is then sliced into fragments and every time a user is revoked access to the resource, the owner can re-encrypt a randomly selected (small) fragment with a key that the revoked user neither knows nor can derive. Few works have extended the selective encryption technique to also enforce selective write privileges (e.g., [25]) and to support the presence of multiple data owners that selectively share their data (e.g., [26]).…”

Section: Selective Encryptionmentioning

confidence: 99%

Protecting Data and Queries in Cloud-Based Scenarios

2023

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The availability of cloud services offered by different providers brings several advantages to users and companies, facilitating the storage, sharing, and processing of data. At the same time, the adoption of cloud services brings new security and privacy risks and challenges. As a matter of fact when leveraging cloud-based services for data storage and processing, data owners loose direct control on their data. Data and queries over them could then be at risk for both potentially improper exposure, compromising their confidentiality, or tampering, compromising their integrity. In this paper, we discuss the main issues to be addressed for guaranteeing data security and privacy in cloud-based storage and processing. We illustrate the different challenges to be considered and the research directions toward their solutions.

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Section: Selective Encryptionmentioning

confidence: 99%