Encryption Sharing

I share files to co-workers and friends, would I be able to encrypt files and send them to my friend with a key or is this a program just to secure files in my own PC? I haven’t used it yet, wanted to ask this question before I download.

Example: I want to send my friend a save file from a game we play, would he be able to open it and how?

Hey there, have a look at this: