> I would like to write a program that could deycrypt ssh
> communication by using the private key of the server
> computer. This should be possable right? And I should be able
> to use libraries the openssh has already writen. In fact the
> majority of the code should already be writen right? I should
> just need to send a packet with the private key to a function right?

You'd also need the user's private key.