Aerogel: Lightweight Access Control Framework for WebAssembly-Based Bare-Metal IoT Devices.
Renju Liu, Luis Garcia, Mani B. Srivastava · PubMed · 2021
. We leverage the inherent sandboxing mechanisms of Wasm to enforce the access control policies to sensors and actuators without trusting the bare-metal operating system. We evaluate our approach on a representative IoT development board: a cortex-M4 based development board (nRF52840). Our results show that Aerogel can effectively enforce compute resource and peripheral access control policies while introducing as little as 0.19% to 1.04% runtime overhead and consuming only 18.8% to 45.9% extra energy.