diff --git a/src/security/sec-tpm-file.hpp b/src/security/sec-tpm-file.hpp
index 4887a15..8a108c5 100644
--- a/src/security/sec-tpm-file.hpp
+++ b/src/security/sec-tpm-file.hpp
@@ -51,9 +51,11 @@
     return false;
   }
 
-  virtual void
+  virtual bool
   unlockTpm(const char* password, size_t passwordLength, bool usePassword)
-  {}
+  {
+    return !locked();
+  }
 
   virtual void
   generateKeyPairInTpm(const Name & keyName, KeyType keyType, int keySize);
@@ -82,6 +84,10 @@
   virtual bool
   generateRandomBlock(uint8_t* res, size_t size);
 
+  virtual void 
+  addAppToACL(const Name& keyName, KeyClass keyClass, const std::string& appPath, AclType acl)
+  {}
+
 protected:
   /******************************
    * From TrustedPlatformModule *