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  1. Proceedings of the 2013 ACM workshop on Cloud computing security workshop (CCSW '13)
  2. Supporting complex queries and access policies for multi-user encrypted databases
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A versatile code execution isolation framework with security first
Authenticated storage using small trusted hardware
On the (Im)possibility of privately outsourcing linear programming
Structural cloud audits that protect private information
An architecture for concurrent execution of secure environments in clouds
CloudSweeper: enabling data-centric document management for secure cloud archives
Secure pattern matching using somewhat homomorphic encryption
Cloudoscopy: services discovery and topology mapping
Generalized external interaction with tamper-resistant hardware with bounded information leakage
Supporting complex queries and access policies for multi-user encrypted databases
Beyond the ideal object: towards disclosure-resilient order-preserving encryption schemes

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Supporting complex queries and access policies for multi-user encrypted databases

Content Provider ACM Digital Library
Author Asghar, Muhammad Rizwan Crispo, Bruno Ion, Mihaela Russello, Giovanni
Abstract Cloud computing is an emerging paradigm offering companies (virtually) unlimited data storage and computation at attractive costs. It is a cost-effective model because it does not require deployment and maintenance of any dedicated IT infrastructure. Despite its benefits, it introduces new challenges for protecting the confidentiality of the data. Sensitive data like medical records, business or governmental data cannot be stored unencrypted on the cloud. Companies need new mechanisms to control access to the outsourced data and allow users to query the encrypted data without revealing sensitive information to the cloud provider. State-of-the-art schemes do not allow complex encrypted queries over encrypted data in a multi-user setting. Instead, those are limited to keyword searches or conjunctions of keywords. This paper extends work on multi-user encrypted search schemes by supporting SQL-like encrypted queries on encrypted databases. Furthermore, we introduce access control on the data stored in the cloud, where any administrative actions (such as updating access rights or adding/deleting users) do not require re-distributing keys or re-encryption of data. Finally, we implemented our scheme and presented its performance, thus showing feasibility of our approach.
Starting Page 77
Ending Page 88
Page Count 12
File Format PDF
ISBN 9781450324908
DOI 10.1145/2517488.2517492
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2013-11-08
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Access control Complex encrypted queries Encrypted databases Data outsourcing
Content Type Text
Resource Type Article
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