---
creation date: 2022-01-08
tags: [note,linux,hetzner,storage,disk]
---

See https://docs.hetzner.com/robot/storage-box/backup-space-ssh-keys.

## Add existing keys or convert format to RFC

**Use both mechanisms (RFC and standard) for maximum compatibility.**

Example how `.ssh/authorized_keys` might look:

```shell
ssh-rsa AA.... user@host
---- BEGIN SSH2 PUBLIC KEY ----
Comment: "2048-bit RSA, converted by user@host from OpenSSH"
AA.....
---- END SSH2 PUBLIC KEY ----
```

**Use https://docs.hetzner.com/robot/storage-box/backup-space-ssh-keys#converting-your-key-to-rfc4716-format!**

## Create a compatible ssh key and transfer to the user

```shell
ssh-keygen-rsa id_rsa

ssh-keygen -e -f .ssh/id_rsa.pub | grep -v "Comment:" > .ssh/id_rsa_rfc.pub
cat .ssh/id_rsa.pub >> storagebox_authorized_keys
cat .ssh/id_rsa_rfc.pub >> storagebox_authorized_keys

echo -e "mkdir .ssh \n chmod 700 .ssh \n put storagebox_authorized_keys .ssh/authorized_keys \n chmod 600 .ssh/authorized_keys" | sftp ...@....your-storagebox.de
```