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arXiv · 1802.03530

Aurora: Providing Trusted System Services for Enclaves On an Untrusted System

Hongliang Liang·Mingyu Li·Qiong Zhang·Yue Yu·Lin Jiang·Yixiu Chen
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Abstract

Intel SGX provisions shielded executions for security-sensitive computation, but lacks support for trusted system services (TSS), such as clock, network and filesystem. This makes \textit{enclaves} vulnerable to Iago attacks~\cite{DBLP:conf/asplos/CheckowayS13} in the face of a powerful malicious system. To mitigate this problem, we present Aurora, a novel architecture that provides TSSes via a secure channel between enclaves and devices on top of an untrusted system, and implement two types of TSSes, i.e. clock and end-to-end network. We evaluate our solution by porting SQLite and OpenSSL into Aurora, experimental results show that SQLite benefits from a \textit{microsecond} accuracy trusted clock and OpenSSL gains end-to-end secure network with about 1ms overhead.

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Hongliang Liang, Mingyu Li, Qiong Zhang, Yue Yu, Lin Jiang, Yixiu Chen. 2018-02-10. Aurora: Providing Trusted System Services for Enclaves On an Untrusted System. https://doi.org/10.1109/tifs.2019.2945621

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