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- W2079820504 abstract "In this work, we study information leakage in timing side channels that arise in the context of shared event schedulers. Consider two processes, one of them an innocuous process (referred to as Alice) and the other a malicious one (referred to as Bob), using a common scheduler to process their jobs. There are other innocuous users in addition to Alice and Bob using the scheduler to process their jobs. Based on when his jobs get processed, Bob wishes to learn about the pattern (size and timing) of Alice's jobs. Depending on the context, knowledge of this pattern could have serious implications on Alice's privacy and security. For instance, shared routers can reveal traffic patterns, shared memory access can reveal cloud usage patterns, and suchlike. We present a formal framework to study the information leakage in shared resource schedulers using the pattern estimation error as a performance metric. The first-come-first-serve (FCFS) scheduling policy and time-division-multiple-access (TDMA) are identified as two extreme policies on the privacy metric, FCFS has the least, and TDMA has the highest. However, on performance-based metrics, such as throughput and delay, it is well known that FCFS significantly outperforms TDMA. We then derive two parameterized policies, accumulate and serve, and proportional TDMA, which take two different approaches to offer a tunable trade-off between privacy and performance." @default.
- W2079820504 created "2016-06-24" @default.
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- W2079820504 date "2016-06-01" @default.
- W2079820504 modified "2023-09-26" @default.
- W2079820504 title "Mitigating Timing Side Channel in Shared Schedulers" @default.
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- W2079820504 doi "https://doi.org/10.1109/tnet.2015.2418194" @default.
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