diff --git a/host/commands/secure_env/keymaster_responder.h b/host/commands/secure_env/keymaster_responder.h
new file mode 100644
index 0000000..b30c6a4
--- /dev/null
+++ b/host/commands/secure_env/keymaster_responder.h
@@ -0,0 +1,31 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+
+#pragma once
+
+#include <keymaster/android_keymaster.h>
+
+#include "common/libs/security/keymaster_channel.h"
+
+class KeymasterResponder {
+private:
+  cvd::KeymasterChannel* channel_;
+  keymaster::AndroidKeymaster* keymaster_;
+public:
+  KeymasterResponder(cvd::KeymasterChannel* channel,
+                     keymaster::AndroidKeymaster* keymaster);
+
+  bool ProcessMessage();
+};