Passphrase-less reboots using kexec under NixOS
Summary
Passphrase-less reboots using kexec on NixOS enables secure, faster reboots by passing LUKS keys via RAM during a kexec-based kernel swap, avoiding manual passphrase entry while preserving full-disk encryption. The article details approaches to generate temporary LUKS keyslots, embed one-time passphrases in initramfs, and implement a custom systemd workflow to automate the process.