diff --git a/keystore/operation_struct.h b/keystore/operation_struct.h
index 00f1fe2..84265b6 100644
--- a/keystore/operation_struct.h
+++ b/keystore/operation_struct.h
@@ -24,6 +24,9 @@
 
 #include <keystore/keymaster_types.h>
 #include <keystore/keystore_hidl_support.h>
+#include <keystore/keystore_return_types.h>
+
+#include <future>
 
 namespace keystore {
 
@@ -37,7 +40,8 @@
               KeyCharacteristics&& characteristics_, sp<IBinder> appToken_,
               const hidl_vec<KeyParameter> params_)
         : handle(handle_), keyid(keyid_), purpose(purpose_), device(device_),
-          characteristics(characteristics_), appToken(appToken_), params(params_) {}
+          characteristics(characteristics_), appToken(appToken_), authToken(), verificationToken(),
+          params(params_) {}
     Operation(Operation&&) = default;
     Operation(const Operation&) = delete;
 
@@ -49,6 +53,8 @@
     sp<Keymaster> device;
     KeyCharacteristics characteristics;
     sp<IBinder> appToken;
+    std::promise<KeyStoreServiceReturnCode> authTokenPromise;
+    std::future<KeyStoreServiceReturnCode> authTokenFuture;
     HardwareAuthToken authToken;
     VerificationToken verificationToken;
     const hidl_vec<KeyParameter> params;