How do I get client_side and client_proof?

[neonpro5]

Hi guys, I'm trying to recreate authorization on the wow 3.3.5 server on the trinitycore core. I have already implemented authorization on the login server, received a list of realms, but now I'm stuck trying to authorize on the world server.

Now I have received the package SMSG_AUTH_CHALLENGE (492) which contains the value server_seed. In response to this packet I have to send CMSG_AUTH_SESSION (493), however I don't understand how I can get client_side and client_proof.

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[neonpro5]

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solution