public static extern BOOL InitializeSid(PSID Sid, [In] ref SID_IDENTIFIER_AUTHORITY pIdentifierAuthority, UCHAR nSubAuthorityCount);
public static extern BOOL InitializeSid(PSID Sid, [In]ref SID_IDENTIFIER_AUTHORITY pIdentifierAuthority, UCHAR nSubAuthorityCount);
public static extern DWORD GetSidLengthRequired(UCHAR nSubAuthorityCount);