The file is encrypted with WinRAR and 7-Zip.
Both WinRAR and 7-Zip use AES-256 which usually considered secure (although as @o_e_l_e_o said, it comes down how they implement it). Anyway, if you plan to store the encrtypted data for really long time, you need to consider possibility AES-256 deemed obsolete or no longer secure enough in distant future.
(2) I have purchased a few high-level encrypted USB drives, including two fingerprint USB drives. The seller claims that these encrypted USB drives cannot be cracked. Therefore, relatively weak passwords (~20 characters) can be used for the electronic files stored on these drives. Also, every encrypted file must have a password explanation.
I doubt security of such USB drive, especially since usually biometric usually only used as authentication (not encryption). And there's also possibility serious theft would just open the USB drive and take NAND/flash drive.