> For the complete documentation index, see [llms.txt](https://mercure-technologies.gitbook.io/expo-open-ota/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mercure-technologies.gitbook.io/expo-open-ota/key-store/local-key-store.md).

# Local Key Store

Store the Expo signing key pair as PEM files on the server disk.

{% hint style="warning" %}
Local storage is not recommended for production.

Each replica needs access to the same key files.
{% endhint %}

Set these variables:

```dotenv
KEYS_STORAGE_TYPE=local
PUBLIC_LOCAL_EXPO_KEY_PATH=/path/to/public-key.pem
PRIVATE_LOCAL_EXPO_KEY_PATH=/path/to/private-key.pem
```

Use this store for local development and testing.

### The CloudFront private key

If you use [CloudFront](/expo-open-ota/cdn/cloudfront.md), keep in mind that `KEYS_STORAGE_TYPE=local` also decides where the server reads the CloudFront private key: it only looks at a PEM file on disk.

```dotenv
PRIVATE_CLOUDFRONT_KEY_PATH=/path/to/cloudfront-private-key.pem
```

The other CloudFront key sources are ignored in this mode — see [Keys](/expo-open-ota/key-store/keys.md) for the full rule.


---

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