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- W2983294834 abstract "Recent advances in side-channel attacks put intoquestion the viability of Simultaneous Multithreading (SMT) architectures from the security standpoint. To address this problem, we propose SMT-COP-a system that eliminates all known side-channels through shared execution logic, including ports and functional units, on SMT processors. At the core of SMT-COP is a small modification to the instruction scheduling logic that allows support for both spatial and temporal partitioning of the execution units to prevent controllable contention for these resources that causes side-channel attacks. We demonstrate thatthe security benefits of SMT-COP are achieved with modest performance overhead and hardware complexity, and without relying on software support. Further performance improvements can be achieved when SMT-COP is applied selectively, and we consider three forms of such selective application: a) in response to detecting resource contention; b) in response to detecting manipulations with time measurement infrastructure; and c) in response to explicit requests by applications. This study represents a step towards making SMT processors more secure." @default.
- W2983294834 created "2019-11-22" @default.
- W2983294834 creator A5066100959 @default.
- W2983294834 creator A5071019540 @default.
- W2983294834 date "2019-09-01" @default.
- W2983294834 modified "2023-10-02" @default.
- W2983294834 title "SMT-COP: Defeating Side-Channel Attacks on Execution Units in SMT Processors" @default.
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- W2983294834 doi "https://doi.org/10.1109/pact.2019.00012" @default.
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