feat(pairing) add list_keys endpoint

Signed-off-by: Eddy Babetto <eddy.babetto@secomind.com>

Author: eddbbt

apps/astarte_pairing/lib/astarte_pairing_web/controllers/owner_key_controller.ex

@@ -0,0 +1,42 @@
+#
+# This file is part of Astarte.
+#
+# Copyright 2026 SECO Mind Srl
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+defmodule Astarte.PairingWeb.OwnerKeyController do
+  use Astarte.PairingWeb, :controller
+
+  alias Astarte.Pairing.FDO.OpenBao
+  alias Astarte.Pairing.FDO.OpenBao.Core
+
+  require Logger
+
+  action_fallback Astarte.PairingWeb.FallbackController
+
+  def list_keys(
+        conn,
+        %{
+          "realm_name" => realm_name,
+          "key_algorithm"=> key_algorithm
+        }
+      ) do
+    {:ok, namespace} = OpenBao.create_namespace(realm_name, key_algorithm)
+
+    with {:ok, keys} <- Core.list_keys(namespace) do
+      send_resp(conn, 200, keys)
+    end
+  end
+end

apps/astarte_pairing/lib/astarte_pairing_web/router.ex

@@ -83,6 +83,7 @@ defmodule Astarte.PairingWeb.Router do
       pipe_through :fdo_feature_gate
       pipe_through :agent_api
       post "/", OwnershipVoucherController, :create
+      post "/list_keys", OwnershipVoucherController, :create
     end
 
     scope "/agent" do
@@ -104,6 +105,14 @@ defmodule Astarte.PairingWeb.Router do
     end
   end
 
+  scope "/fdo" do
+    pipe_through :fdo_feature_gate
+
+    pipe_through :agent_api
+
+    get "/list_keys", OwnerKeyController, :list_keys
+  end
+
   scope "/version", Astarte.PairingWeb do
     get "/", VersionController, :show
   end