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As the Internet of Things (IoT) continues to expand, data security has becomeincreasingly important for ensuring privacy and safety, especially given thesensitive and, sometimes, critical nature of the data handled by IoT devices.There exist hardware-based trusted execution environments used to protect data,but they are not compatible with low-cost devices that lack hardware-assistedsecurity features. The research in this paper presents software-basedprotection and encryption mechanisms explicitly designed for embedded devices.The proposed architecture is designed to work with low-cost, low-end deviceswithout requiring the usual changes on the underlying hardware. It protectsagainst hardware attacks and supports runtime updates, enabling devices towrite data in protected memory. The proposed solution is an alternative datasecurity approach for low-cost IoT devices without compromising performance orfunctionality. Our work underscores the importance of developing secure andcost-effective solutions for protecting data in the context of IoT.

Software-based security approach for networked embedded devices