> For the complete documentation index, see [llms.txt](https://docs.auterion.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.auterion.com/hardware-integration/auterion-developer-tools/adding-ssh-keys.md).

# Adding SSH keys

When using a [production image](/hardware-integration/auterionos-system-guide/types-of-auterionos-images.md#production-and-development-images) where SSH root access as well as password-based login are disabled, you can add your public SSH key to Skynode using the developer tools. Please ensure that your key is well protected. The SSH key has to be added to the file `./authorized_keys` in the developer tools and Skynode has to be re-flashed afterwards with a newly built image using the developer tools.

If you do not have an SSH key yet, you can generate a 4096 bit RSA key with this command:

```bash
ssh-keygen -t rsa -b 4096
```

The following command appends your public SSH key to `authorized keys`.

```bash
cd <path_to_auterion-developer-tools>
cat ~/.ssh/id_rsa.pub >> ./authorized_keys
```

If your Skynode is running a production image, you will need to build and provision a new image for Skynode before the key can be used. Otherwise you can use the following command to add your key on your device.

```bash
make import-ssh-key
```

By default Skynode will take the SSH key from `~/.ssh/id_rsa.pub` but you can override the default path with the argument `keyPath=`.

Once the SSH keys were added, package a new AuterionOS image by using the following command for example:

{% code overflow="wrap" %}

```bash
make package-update version=my-version artifactPath=~/Download/artifact.auterionos outputArtifactPath=./output/update.auterionos
```

{% endcode %}


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