Executing SQL over encrypted data in the database-service-provider model
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Balancing confidentiality and efficiency in untrusted relational DBMSs
Proceedings of the 10th ACM conference on Computer and communications security
Order preserving encryption for numeric data
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Modeling and assessing inference exposure in encrypted databases
ACM Transactions on Information and System Security (TISSEC)
Dynamic authenticated index structures for outsourced databases
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
Journal of Cognitive Neuroscience
Controlling access to published data using cryptography
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Integrity auditing of outsourced data
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
A fuzzy approach to multimodal biometric continuous authentication
Fuzzy Optimization and Decision Making
Dynamic and Efficient Key Management for Access Hierarchies
ACM Transactions on Information and System Security (TISSEC)
Privacy-Aware Biometrics: Design and Implementation of a Multimodal Verification System
ACSAC '08 Proceedings of the 2008 Annual Computer Security Applications Conference
Encryption policies for regulating access to outsourced data
ACM Transactions on Database Systems (TODS)
Data protection in outsourcing scenarios: issues and directions
ASIACCS '10 Proceedings of the 5th ACM Symposium on Information, Computer and Communications Security
Achieving secure, scalable, and fine-grained data access control in cloud computing
INFOCOM'10 Proceedings of the 29th conference on Information communications
Privacy-preserving fingercode authentication
Proceedings of the 12th ACM workshop on Multimedia and security
Fragments and loose associations: respecting privacy in data publishing
Proceedings of the VLDB Endowment
Designing secure indexes for encrypted databases
DBSec'05 Proceedings of the 19th annual IFIP WG 11.3 working conference on Data and Applications Security
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Cloud storage services have recently emerged as a successful approach for making resources conveniently available to large communities of users. Several techniques have been investigated for enabling such services, including encryption for ensuring data protection, as well as indexing for enabling efficient query execution on encrypted data. When data are to be made available selectively, the combined use of the two techniques must be handled with care, since indexes can put the confidentiality protection guaranteed by encryption at risk. In this paper, we investigate this issue and propose an indexing technique for supporting efficient access to encrypted data while preventing possible disclosure of data to users not authorized to access them. Intuitively, our indexing technique accounts for authorizations when producing indexes so to ensure that different occurrences of the same plaintext value, but accessible by different sets of users, be not recognizable from their indexes. We show that our solution exhibits a limited performance overhead in query evaluation, while preventing leakage of information.