How to get the CD-Key public value?

[ThePro]

Hey there!
I got a working bot which works perfectly. I used a Packet sniffer to get the public value of my CD-Key so if i change the CD-Key i get IP banned, because the public Value doesen't match to the new CD-Key. Is there a way to calculate the public value of my CD-Key? I'm using. I'm coding in C++ and use bncsutil.dll for calculating exe.hash ect.

[Spilled]

Decode the Cdkey

[rabbit]

Just to let you know, it's called "public"...