ed25519hetzner

Script to scan OpenSSH host key and known_hosts files for shared keys from server hoster Hetzner

usage

./ed25519hetzner [files]

If script runs with user rights and no files are given the script checks the user's known_hosts and if available the system's ed25519 key.

If script runs as root it checks the root's, all user's known_hosts and the system's ed25519 key.

background

Between April 2015 and December 2015 Hetzner preinstallation images contained a shared Ed25519 key.

• http://wiki.hetzner.de/index.php/Ed25519/en
• http://blogs.intevation.de/thomas/hetzner-duplicate-ed25519-ssh-host-keys/