Two Birds with One Stone: Differential Privacy by Low-power SRAM Memory
IEEE Transactions on Dependable and Secure Computing(2024)
摘要
The software-based implementation of differential privacy mechanisms has been
shown to be neither friendly for lightweight devices nor secure against
side-channel attacks. In this work, we aim to develop a hardware-based
technique to achieve differential privacy by design. In contrary to the
conventional software-based noise generation and injection process, our design
realizes local differential privacy (LDP) by harnessing the inherent hardware
noise into controlled LDP noise when data is stored in the memory.
Specifically, the noise is tamed through a novel memory design and power
downscaling technique, which leads to double-faceted gains in privacy and power
efficiency. A well-round study that consists of theoretical design and analysis
and chip implementation and experiments is presented. The results confirm that
the developed technique is differentially private, saves 88.58
speeds up software-based DP mechanisms by more than 10^6 times, while only
incurring 2.46
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关键词
local differential privacy,static random-access memory,low-power,hardware-software co-design
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