Taking Control of Your EFI Secure Boot Keys: A Deep Dive
2025-07-23
This article provides a comprehensive guide to taking full control of your computer's EFI Secure Boot keys. It details the four Secure Boot key types (Database Key, Forbidden Signature Key, Key Exchange Key, Platform Key) and the role of Machine Owner Keys, outlining steps for generating custom keys, signing EFI binaries, and deploying keys on single or multiple machines. The article covers using KeyTool and LockDown tools, managing keys from Linux, and updating the dbx to address security vulnerabilities like Boot Hole. While complex, this process significantly enhances system security.
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