TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Tajan, Louis
A1  - Westhoff, Dirk
A1  - Armknecht, Frederik
A1  - Reuter, Christian A.
T1  - Private information retrieval and Searchable Encryption for privacy-preserving multi-client cloud auditing
T2  - 2016 11th International Conference for Internet Technology and Secured Transactions (ICITST)
N2  - 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 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.
KW  - Cloud computing
KW  - Informationsvermittlung
KW  - Kryoptologie
Y1  - 2016
SN  - 978-1-908320-73-5 (Elektronisch)
SB  - 978-1-908320-73-5 (Elektronisch)
SN  - 978-1-5090-4852-6 (Print on Demand)
SB  - 978-1-5090-4852-6 (Print on Demand)
U6  - https://doi.org/10.1109/ICITST.2016.7856690
DO  - https://doi.org/10.1109/ICITST.2016.7856690
SP  - 162
EP  - 169
PB  - IEEE
ER  -