No, you can't.
The mechanism to identify the client protocol precedes the use of the RSA key, if indeed the key is used at all (for identifying).
It's certainly used for something concerning identification, but it's most certainly not the "DNA" of the client which you so seem to run around on the Tibia forums thinking and telling people (and you do so because you're insecure about it yourself, so you're waiting for someone like me to explain ;d).
Unfortunately I can't explain. I haven't solved it yet. But I know for sure that the RSA key is not what you think it is. After changing my RSA key, the packet structure seem to be the same - thus no changes has been made to the external identification-process between the server and client.
And I don't know what Zaowan does in his sparetime while I'm not looking, but I have seen no evidence or suggestions myself for him being inclined to use bot. Even when he's been killed like 7 times by the same guy in 1 hour and spent loads of money on aol, he never talked about or showed any signs of wanting to use a bot. So I don't think it's the case that he's a botter... His SD aim isn't good enough for an aimbot-claim anyway... If you (guys) absolutely have to accuse someone aimbotting, accuse
Shine. His aim is so pro I might think he's aimbotting sometimes ;d Shinezor is botzor, I swearzor.