nscrypt is a freeware (totally free) encryption software/ utility, which allows truly HUGE encryption keys = no sorry excuse for a Hacker will ever be able to open nscrypted files (when huge key). Available as commandline (pkzip etc style) dos or 32 bit windows (95, 98, NT4) versions. Also version with unique internal 1024 bit re-encryption available for reasonable fee...
Integrates into Explorer and most other win32 -programs!
Totally secure freeware: every bit of the file depends on every bit of the key! The very Algorithm and precrypting Scrambler depends on the key! Developement continues. Easy and fast to use. Now stuffs files!