From: Eleanor McHugh <eleanor@...>
Date: 2008-05-25T00:04:40+09:00
Subject: Re: Need your recommendations for TCP Server/Client design

On 23 May 2008, at 22:07, Victor Reyes wrote:
> Reading a new book I just acquired I came across a package called  
> *GServer*.
> I was wondering if this will be suitable for what I need.
> Also, what type of encryption should I use?
>
> They were talking something like:
>
> Client sends connection request
> Server replies with client's *hostname* and *time*
> Client sends back the *time *received from server together with the  
> command
> which the client wants to execute at the remote server.
> Server executes command if it is "happy" with the reply from the  
> client.
>
> Of course all communication must be ciphered.
>
> Any suggestions will be greatly appreciated.

Go to the link in my sig and study the Semantic Networking  
presentation. There's an example in there of doing hybrid key crypto,  
which is where you use a public key exchange to wrap a symmetric key  
for establishing a connection and then use the symmetric key (with  
much less processing overhead) to do the actual communication. On the  
surface it's probably overkill for your app, but the included source  
code shows how GServer can be used for this kind of tool and as the  
whole thing is based on OpenSSL it should be possible to conform with  
any security policy you're working under.


Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net
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raise ArgumentError unless @reality.responds_to? :reason