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  1. Proceedings of the 2013 ACM workshop on Cloud computing security workshop (CCSW '13)
  2. Beyond the ideal object: towards disclosure-resilient order-preserving encryption schemes
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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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Beyond the ideal object: towards disclosure-resilient order-preserving encryption schemes

Content Provider ACM Digital Library
Author Alshawish, Ali Schaefer, Guenter Rossberg, Michael Wozniak, Sander Grau, Sascha
Abstract With the emergence of affordable cloud services, users are currently moving data to external services providers. Hence, they implicitly trust providers to not abuse or "lose" sensitive data. To protect this data in the context of cloud computing, the use of Order-Preserving Encryption (OPE) has been suggested to encrypt data while still allowing efficient queries. The reference approach builds on Order-Preserving Functions (OPFs) drawn uniformly at random: the so-called "ideal object". However, recent results question the suitability of this construction, as its security properties turn out to be poor. In this article, we investigate possible alternatives. For this, we introduce two descriptive metrics rating one-wayness-related properties of OPF construction schemes, i.e., the ability of an adversary to estimate the plaintext when given a ciphertext and possible extra information. Furthermore, we propose three novel approaches to draw OPFs and apply the introduced metrics to study their security features in relation to the "ideal object". The results visualize the extent of insecurity caused by using the "ideal object" and qualify the suitability of the alternative schemes under different threat scenarios.
Starting Page 89
Ending Page 100
Page Count 12
File Format PDF
ISBN 9781450324908
DOI 10.1145/2517488.2517496
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2013-11-08
Publisher Place New York
Access Restriction Subscribed
Subject Keyword One-wayness Ideal object Disclosure-resilience Order-preserving encryption
Content Type Text
Resource Type Article
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