Secure Database Outsourcing to the Cloud: Side-Channels, Counter-Measures and Trusted Execution

Matthias Gabel, Jeremias Mechler
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引用次数: 4

Abstract

Outsourcing data processing and storage to the cloud is a persistent trend in the last years. Cloud computing offers many advantages like flexibility in resource allocation, cost reduction and high availability. However, when sensitive information is handed to a third party, security questions are raised since the cloud provider and his employees are not fully trusted. Standard security mechanisms like transport encryption and regular audits alone cannot solve the issue of insider attacks. Additional cryptographic techniques are required. In this paper, we build upon an existing proxy for secure database outsourcing. We address potential side-channels and weaknesses, which are later analyzed and mitigated. Furthermore, we take a look at trusted execution environments (TEEs) like Intel Software Guard Extensions (SGX) and show how they can be applied to allow for secure execution in the secure database outsourcing case.
数据库安全外包到云:侧通道、对策和可信执行
将数据处理和存储外包到云端是过去几年的一个持续趋势。云计算提供了许多优势,如资源分配的灵活性、成本降低和高可用性。然而,当敏感信息被交给第三方时,由于云提供商及其员工不完全受信任,就会出现安全问题。传输加密和定期审计等标准安全机制本身无法解决内部攻击问题。需要额外的加密技术。在本文中,我们基于一个现有的代理来实现安全的数据库外包。我们解决了潜在的侧通道和弱点,稍后对其进行分析和缓解。此外,我们还将介绍可信执行环境(tee),如Intel Software Guard Extensions (SGX),并展示如何应用它们在安全数据库外包情况下实现安全执行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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