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- W2979547870 abstract "Recent attacks have broken process isolation by exploiting microarchitectural side channels that allow indirect access to shared microarchitectural state. Enclaves strengthen the process abstraction to restore isolation guarantees. We propose MI6, an aggressively speculative out-of-order processor capable of providing secure enclaves under a threat model that includes an untrusted OS and an attacker capable of mounting any software attack currently considered practical, including those utilizing control flow mis-speculation. MI6 is inspired by Sanctum [16] and extends its isolation guarantee to more realistic memory hierarchy. It also introduces a purge instruction, which is used only when a secure process is (de)scheduled, and implements it for a complex processor microarchitecture. We model the performance impact of enclaves in MI6 through FPGA emulation on AWS F1 FPGAs by running SPEC CINT2006 benchmarks as enclaves within an untrusted Linux OS. Security comes at the cost of approximately 16.4% average slowdown for protected programs." @default.
- W2979547870 created "2019-10-18" @default.
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- W2979547870 date "2019-10-12" @default.
- W2979547870 modified "2023-10-15" @default.
- W2979547870 title "MI6" @default.
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- W2979547870 doi "https://doi.org/10.1145/3352460.3358310" @default.
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