Link

Unlock the screen with YubiKey 5 in Debian GNU/Linux trixie with KDE (spoiler: not sddm)

I got a YubiKey 5 and I played some weeks with it. Example of things I’ve done:

  • ✅ passwordless sudo in Debian, or, 2FA sudo in Debian
  • ✅ passwordless policy kit (e.g. “Run as administrator”) in Debian, or, 2FA for it
  • ✅ passwordless login in some websites, or, 2FA, in Firefox
  • ✅ passwordless SSH access in Debian, or, 2FA SSH in Debian
  • ✅ passwordless login in Debian, or, 2FA login in Debian (sddm)
  • 🥶 but screen unlocking

I mean, super easy to login, but it was impossible to lock/unlock the screen with YubiKey. WHY? Good question.

Answer: KDE designers are too good and trolled me :3 note for myself:

https://superuser.com/q/1934174/390314

LimeSurvey: wrong decryption key (AARGH)

If encryption shit fails in your LimeSurvey, try this:

https://serverfault.com/questions/1086361/limesurvey-sodiumexception-wrong-decryption-key

TL;DR: Save again your SMTP password.

Have you fixed? Great! Close this browser tab.

Is the bug already there? Oh no! Probably you are an idiot and you deleted your encryption keys.

You have a backup. Isn’t it? Uh?