HTTP sig fixes.

lib/pleroma/user/info.ex

@@ -98,6 +98,16 @@ def remote_user_creation(info, params) do
     ])
   end
 
+  def user_upgrade(info, params) do
+    info
+    |> cast(params, [
+      :ap_enabled,
+      :source_data,
+      :banner,
+      :locked
+    ])
+  end
+
   def set_source_data(info, source_data) do
     params = %{source_data: source_data}
 

lib/pleroma/web/http_signatures/http_signatures.ex

@@ -65,7 +65,7 @@ def build_signing_string(headers, used_headers) do
   end
 
   def sign(user, headers) do
-    with {:ok, %{info: %{"keys" => keys}}} <- Pleroma.Web.WebFinger.ensure_keys_present(user),
+    with {:ok, %{info: %{keys: keys}}} <- Pleroma.Web.WebFinger.ensure_keys_present(user),
          {:ok, private_key, _} = Pleroma.Web.Salmon.keys_from_pem(keys) do
       sigstring = build_signing_string(headers, Map.keys(headers))