How can I compress a 1GB file into 10MB using KGB archiver?

Firstly, do you know what KGB archiver  is?

KGB Archiver is a compression tool that has very high compression rates. It encrypts archives using AES-256 . It is very powerful because it creates the tinniest archives. It is even more popular for the reason that it supports many different languages.
httpv://www.youtube.com/watch?v=eUYSQ_ipI1E