Building Secure Firmware: Armoring the Foundation of the Platform

© Jiewen Yao and Vincent Zimmer 2020

J. Yao, V. ZimmerBuilding Secure Firmwarehttps://doi.org/10.1007/978-1-4842-6106-4_7

7. Trusted Boot

Jiewen Yao¹  and Vincent Zimmer²

(1)

Shanghai, China

(2)

Issaquah, WA, USA

 

The CIA triad of confidentiality, integrity, and availability should always be of top importance for the developer. Regarding “integrity,” secure boot is a valuable feature to help maintain integrity claims of a platform. It is also called verified boot. When secure boot is enabled, one component will verify the next component before it executes it. If the verification fails, the next component will not be executed. It seems very useful. But how does the other software know if the secure boot is enabled and enabled correctly? How does the other ...