diff --git a/Keymaster.h b/Keymaster.h
index 7ade10d..8ddd8f7 100644
--- a/Keymaster.h
+++ b/Keymaster.h
@@ -39,6 +39,7 @@
 // dangerous thing to rely on, but in this case its implications are simple and straightforward:
 // km::ErrorCode refers to the 4.0 ErrorCode, though we pull everything else from 4.1.
 using ErrorCode = ::android::hardware::keymaster::V4_0::ErrorCode;
+using V4_1_ErrorCode = ::android::hardware::keymaster::V4_1::ErrorCode;
 
 }  // namespace km
 
@@ -125,6 +126,10 @@
                              km::AuthorizationSet* outParams);
     bool isSecure();
 
+    // Tell Keymaster that early boot has ended and early boot-only keys can no longer be created or
+    // used.
+    void earlyBootEnded();
+
   private:
     std::unique_ptr<KmDevice> mDevice;
     DISALLOW_COPY_AND_ASSIGN(Keymaster);