[MUD-Dev] SSH Encryption on data stream

Brian Hook brianhook at pyrogon.com
Fri Oct 10 15:44:28 New Zealand Daylight Time 2003


On Fri, 10 Oct 2003 14:15:57 -0400 (EDT), Craig H Fry wrote:

> Has anyone tried or is it just assumed the over head for packet
> encryption/decryption would cause a bottleneck?

Using industrial strength crypto would likely cause serious
performance problems.  Also, SSH is a TCP protocol, so you couldn't
use "my-game-over-SSH" as an option if you are UDP based.

SSH by itself isn't anything particularly bulletproof, it just
relies on the theory that the client and the server are trusted.  By
using an asymmetric key system it minimizes the chances of packet
sniffing succeeding, but you can achieve this yourself by using PGP
style encryption.  The overhead would be a killer though.

For real time traffic, a symmetric key algorithm like Blowfish will
be much, much faster.

Brian
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