diff --git a/app/controllers/activitypub/outboxes_controller.rb b/app/controllers/activitypub/outboxes_controller.rb
index 9f97ff6226d67480861a8672cf54f3d41717787a..a431e35578379d9b5fab9cf2ea62ce1c11b50136 100644
--- a/app/controllers/activitypub/outboxes_controller.rb
+++ b/app/controllers/activitypub/outboxes_controller.rb
@@ -1,10 +1,12 @@
 # frozen_string_literal: true
 
 class ActivityPub::OutboxesController < Api::BaseController
+  include SignatureVerification
+
   before_action :set_account
 
   def show
-    @statuses = @account.statuses.permitted_for(@account, current_account).paginate_by_max_id(20, params[:max_id], params[:since_id])
+    @statuses = @account.statuses.permitted_for(@account, signed_request_account).paginate_by_max_id(20, params[:max_id], params[:since_id])
     @statuses = cache_collection(@statuses, Status)
 
     render json: outbox_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
diff --git a/app/controllers/concerns/signature_authentication.rb b/app/controllers/concerns/signature_authentication.rb
new file mode 100644
index 0000000000000000000000000000000000000000..beec932238195f24f05f9f10709716fe2d889da6
--- /dev/null
+++ b/app/controllers/concerns/signature_authentication.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module SignatureAuthentication
+  extend ActiveSupport::Concern
+
+  include SignatureVerification
+
+  def current_account
+    super || signed_request_account
+  end
+end
diff --git a/app/controllers/statuses_controller.rb b/app/controllers/statuses_controller.rb
index 367ea34e78d9db4603f28616ddf8fb709c83aaa6..45226c8d2ae4edb75c398ad19ecfc1b322d716c0 100644
--- a/app/controllers/statuses_controller.rb
+++ b/app/controllers/statuses_controller.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 class StatusesController < ApplicationController
+  include SignatureAuthentication
   include Authorization
 
   layout 'public'