I need a pro's help writing a system

So i am a coder for a bank and im trying something new. Im trying to code a key card system that will put a players id on it then there keycode that is 35 chars long then it will put some other things on it but it has to get encrypted so people cant copy it. Please msg me on skype if you are willing to try out and help me and a buddy.

Thanks,
Davin

Skype: thelegacyunlocking

Simpy search for the sha256 function by GravityScore (not sure) and use the function and store that string as password. When you are entering your password you must compare that hashed string with your string that first has to be hashed. if that is equal then you have a match. :)/>