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November 4, 2017 02:00 pm

Experts Propose Standard For IoT Firmware Updates

An anonymous reader quotes a report from Bleeping Computer: Security experts have filed a proposal with the Internet Engineering Task Force (IETF) that defines a secure framework for delivering firmware updates to Internet of Things (IoT) devices. Filed on Monday by three ARM employees, their submission has entered the first phase of a three-stage process for becoming an official Internet standard. Titled "IoT Firmware Update Architecture," their proposal -- if approved -- puts forward a series of ground rules that device makers could implement when designing the firmware update mechanism for their future devices. The proposed rules are nothing out of the ordinary, and security experts have recommended and advocated for most of these measures for years. Some hardware vendors are most likely already compliant with the requirements included in this IETF draft. Nonetheless, the role of this proposal is to have the IETF put forward an official document that companies could use as a baseline when designing the architecture of future products. This document could also serve as a general guideline for lawmakers who could draft regulations forcing manufacturers to adhere to this baseline. Some of the main requirements put forward by three ARM engineers in their IETF draft include: The update mechanism must work the same even if the firmware binary is delivered via Bluetooth, WiFi, UART, USB, or other mediums; The update mechanism must work in a broadcast type of delivery, allowing updates to reach multiple users at once; End-to-end security (public key cryptography) must be used to verify and validate firmware images.

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