Practical Mitigations for Timing-Based Side-Channel Attacks on Modern x86 Processors
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- 1 May 2009
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 10816011,p. 45-60
- https://doi.org/10.1109/sp.2009.19
Abstract
This paper studies and evaluates the extent to which automated compiler techniques can defend against timing-based side-channel attacks on modern x86 processors. We study how modern x86 processors can leak timing information through side-channels that relate to control flow and data flow. To eliminate key-dependent control flow and key-dependent timing behavior related to control flow, we propose the use of if-conversion in a compiler backend, and evaluate a proof-of-concept prototype implementation. Furthermore, we demonstrate two ways in which programs that lack key-dependent control flow and key-dependent cache behavior can still leak timing information on modern x86 implementations such as the Intel Core 2 Duo, and propose defense mechanisms against them.Keywords
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