¿How to read client send buffer?

[docma]

Hi, i am new here, sorry for my english, ok...

I am learning about the functions of tecnology client/server, i created basic server, i changed the ip and port of my tibia client, when i connect to my server i get a buffer from tibia client, i print this buffer but get a encrypted string

¿How i can read this mensage? for example, i wanna get the account from my tibia client, but i need decrypt first the string, ¿How?

i read something about RSA, but i don't understand this, i wanna get decrypt the string send from tibia client

thanks