Function BCryptSignHash 

pub unsafe fn BCryptSignHash(
    hkey: BCRYPT_KEY_HANDLE,
    ppaddinginfo: Option<*const c_void>,
    pbinput: &[u8],
    pboutput: Option<&mut [u8]>,
    pcbresult: *mut u32,
    dwflags: BCRYPT_FLAGS,
) -> NTSTATUS