SSE-C allows an S3 client to en/decrypt an object at the MinIO server. Therefore the S3 client sends a secret key as part of the HTTP request. This secret key is **never** stored by the MinIO server and only resides in RAM during the en/decryption process.

```bash
helm install --set existingSecret=my-minio-secret minio/minio
```

The following fields are expected in the secret:

| .data.\<key\> in Secret | Corresponding variable | Description    | Required |
|:------------------------|:-----------------------|:---------------|:---------|
| `rootUser`              | `rootUser`             | Root user.     | yes      |