[DllImport("advapi32")] public static extern int InitializeSid(IntPtr Sid, ref SID_IDENTIFIER_AUTHORITY pIdentifierAuthority, Byte nSubAuthorityCount);
[DllImport("advapi32")] public static extern int AllocateAndInitializeSid(ref SID_IDENTIFIER_AUTHORITY pIdentifierAuthority, Byte nSubAuthorityCount, int nSubAuthority0, int nSubAuthority1, int nSubAuthority2, int nSubAuthority3, int nSubAuthority4, int nSubAuthority5, int nSubAuthority6, int nSubAuthority7, ref int lpPSid);