Its your game, do what you want, call it what you want .......
then, if you are worried about security, use a custom encryption method.... the root of BC is advanced encryption between users.
If you code a save system where players can trade inventory, but you keep encrypted to prevent hacking .....
call it what you want ....
for most GM games, you could even leave it in a text file (in plain text) and very few would even look at it....
Let history be your guide ... if you have had a game with over 1000 players .... encrypt it, if over 10000 make it complicated,
over 100000 .... BC it ....
most GM games never make it over 1000. Even more unlikely on first launch. So, for your Alpha release, no encryption at all.
This will help with bug reports ... When ready for Beta, add simple encryption ... When ready for Steam add advanced encryption...
No need to pull your hair out on supper-duper-encryption until you have a fully functional MMO on your second full release.
but,
do what you want.
GM is here to have fun.