The ClusterRegGetKeySecurity function returns a copy of the security descriptor protecting the specified cluster database key.
LONG WINAPI ClusterGetKeySecurity(
  HKEY hKey,                                 
  SECURITY_INFORMATION SecurityInformation,  
  PSECURITY_DESCRIPTOR pSecurityDescriptor,  
  LPDWORD lpcbSecurityDescriptor             
);
 If the operation was unsuccessful, ClusterRegGetKeySecurity returns a Win32 error value.
  Version: Use Windows NT Server Enterprise Edition 4.0.
  Windows CE: Unsupported.
  Header: Declared in clusapi.h.