It&#x27;s worth pointing out here that reusing a static keypair with Let&#x27;s Encrypt is currently more or less straight-forward using acme-tiny.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;diafygi&#x2F;acme-tiny" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;diafygi&#x2F;acme-tiny</a><p>Edit: Looks like <a href="https:&#x2F;&#x2F;github.com&#x2F;lukas2511&#x2F;letsencrypt.sh" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;lukas2511&#x2F;letsencrypt.sh</a> is capable of doing the same, as pointed out in another comment.