nu.kanga.list.mud-dev

24834: Re: [MUD-Dev] TECH: Trusting Network Clients

On Tue, Aug 27, 2002 at 01:54:55PM +0000, James Ross Nicoll wrote:

> Its worth noting you can theoretically skip the server having to
> send back the results, by having a different random number
> generating seed per user, telling the client what it is at the
> start, and then if the client and server perform the same
> calculations, they should get the same results. However, this
> leaves the possibility of the client being hacked to display what
> the results of an action would be, without performing the actual
> action.

Instead of sending back the whole result, the server could send back
a seed/offset that, when used to calculate the action, returns the
same results as were reached on the server.

This would prevent a client from being able to predict the results
of an action without actually performing the action.

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