kr

Pair with phone

$ kr pair

$ kr devices

$ kr generate --email [email@example.com]

$ kr add [user@host]

$ kr unpair

kr command [options]

kr is the Krypton CLI for SSH key management. It stores SSH keys on a smartphone instead of the computer.
The tool pairs with the Krypton mobile app. SSH authentication requires phone approval for each connection.
kr manages mobile SSH keys.

pair

Pair with Krypton phone app.

List paired devices.

Generate SSH key on phone.

Add key to host.

Remove device pairing.

Display help information.

Requires Krypton app. Phone needed for auth. Project deprecated.

kr was the CLI for Krypton (now deprecated), which stored SSH and GPG keys on smartphones for 2FA.

ssh(1), ssh-keygen(1), gpg(1)