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Private information retrieval and Searchable Encryption for privacy-preserving multi-client cloud auditing

  • In the work at hand, we combine a Private Information Retrieval (PIR) protocol with Somewhat Homomorphic Encryption (SHE) and use Searchable Encryption (SE) with the objective to provide security and confidentiality features for a third party cloud security audit. During the auditing process, a third party auditor will act on behalf of a cloud service user to validate the security requirementsIn the work at hand, we combine a Private Information Retrieval (PIR) protocol with Somewhat Homomorphic Encryption (SHE) and use Searchable Encryption (SE) with the objective to provide security and confidentiality features for a third party cloud security audit. During the auditing process, a third party auditor will act on behalf of a cloud service user to validate the security requirements performed by a cloud service provider. Our concrete contribution consists of developing a PIR protocol which is proceeding directly on a log database of encrypted data and allowing to retrieve a sum or a product of multiple encrypted elements. Subsequently, we concretely apply our new form of PIR protocol to a cloud audit use case where searchable encryption is employed to allow additional confidentiality requirements to the privacy of the user. Exemplarily we are considering and evaluating an audit of client accesses to a controlled resource provided by a cloud service provider.show moreshow less

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Metadaten
Author:Louis Tajan, Dirk Westhoff, Frederik Armknecht, Christian A. Reuter
Creating Corporation:IEEE
Publisher:IEEE
Year of Publication:2016
Language:English
Tag:Cloud computing; Informationsvermittlung; Kryoptologie
Parent Title (English):Internet Technology and Secured Transactions (ICITST)
Document Type:Conference Proceeding
Institutes:Hochschule Offenburg / Bibliografie
Release Date:2018/02/06
Licence (German):License LogoEs gilt das UrhG
DOI:https://doi.org/10.1109/ICITST.2016.7856690