How to do it...
There are many variables and considerations to take into account when implementing a secure update ecosystem for embedded IoT devices. Certain architectures, SoCs, or bootloaders may not have the ability to perform all the required actions to employ a resilient firmware update system. Due to the complexity and variations in employing a secure update system, we will address high-level actions manufacturers should incorporate into their firmware update design. For simplicity, we will use Embedded Linux as our platform and provide the requirements needed for a secure update system. Again, not all the following requirements may be feasible, however it is important for the device manufacturer to perform their due diligence and ...
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