fideAS file private prevents access to data by unauthorized third parties. The portable working Freeware monitored previously specified directories, including sub-folders and files, protecting them with encryption from prying eyes. Access to the corresponding encoded data is granted only to those who have previously given the appropriate password and is owned by an associated signature key. This is generated by private fideAS file as part of the initial program, which as far as possible strong password generated each user. It is provided with private fideAS file not only the author read and write permissions. As required, other users access to the folders and files.