diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index e4540dea9ed..9e4fe90a168 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -1277,6 +1277,12 @@ typedef DWORD (WINAPI *APPLICATION_RECOVERY_CALLBACK)(PVOID);
 #define MAKEINTATOM(i) (LPTSTR)((ULONG_PTR)((WORD)(i)))
 #endif
 
+typedef DWORD
+(WINAPI *PFE_IMPORT_FUNC)(
+  _Out_writes_bytes_to_(*ulLength, *ulLength) PBYTE pbData,
+  _In_opt_ PVOID pvCallbackContext,
+  _Inout_ PULONG ulLength);
+
 /* Functions */
 #ifndef UNDER_CE
 int APIENTRY WinMain(_In_ HINSTANCE, _In_opt_ HINSTANCE, _In_ LPSTR, _In_ int);
@@ -3142,6 +3148,7 @@ BOOL WINAPI WinLoadTrustProvider(GUID*);
 BOOL WINAPI Wow64DisableWow64FsRedirection(PVOID*);
 BOOLEAN WINAPI Wow64EnableWow64FsRedirection(_In_ BOOLEAN);
 BOOL WINAPI Wow64RevertWow64FsRedirection(PVOID);
+DWORD WINAPI WriteEncryptedFileRaw(_In_ PFE_IMPORT_FUNC, _In_opt_ PVOID, _In_ PVOID);
 BOOL WINAPI WriteFile(HANDLE,LPCVOID,DWORD,LPDWORD,LPOVERLAPPED);
 BOOL WINAPI WriteFileEx(HANDLE,LPCVOID,DWORD,LPOVERLAPPED,LPOVERLAPPED_COMPLETION_ROUTINE);
 BOOL WINAPI WriteFileGather(HANDLE,FILE_SEGMENT_ELEMENT*,DWORD,LPDWORD,LPOVERLAPPED);