diff --git a/core/java/android/security/IKeystoreService.aidl b/core/java/android/security/IKeystoreService.aidl
index 57477f580a425..b5496e4a54dcd 100644
--- a/core/java/android/security/IKeystoreService.aidl
+++ b/core/java/android/security/IKeystoreService.aidl
@@ -51,7 +51,6 @@ interface IKeystoreService {
     String grant(String name, int granteeUid);
     int ungrant(String name, int granteeUid);
     long getmtime(String name, int uid);
-    int duplicate(String srcKey, int srcUid, String destKey, int destUid);
     int is_hardware_backed(String string);
     int clear_uid(long uid);
 
diff --git a/keystore/java/android/security/KeyStore.java b/keystore/java/android/security/KeyStore.java
index fabcdf008c470..1690e8ce93097 100644
--- a/keystore/java/android/security/KeyStore.java
+++ b/keystore/java/android/security/KeyStore.java
@@ -424,15 +424,6 @@ public class KeyStore {
         return getmtime(key, UID_SELF);
     }
 
-    public boolean duplicate(String srcKey, int srcUid, String destKey, int destUid) {
-        try {
-            return mBinder.duplicate(srcKey, srcUid, destKey, destUid) == NO_ERROR;
-        } catch (RemoteException e) {
-            Log.w(TAG, "Cannot connect to keystore", e);
-            return false;
-        }
-    }
-
     // TODO: remove this when it's removed from Settings
     public boolean isHardwareBacked() {
         return isHardwareBacked("RSA");