RE: ICMP (Ping)

[Tim Greer <chatmaster () charter net>]

On Thu, 2003-09-04 at 17:20, Gerard Marshall Vignes wrote:
> The applicable tenet from encryption is that the encryption method is known,
> while the key is kept secret. This is taken to an extreme today, where many
> common encryption methods are published openly. This is why attackers
> usually try to get the keys. These encryption methods are both efficient and
> effective.
>
> If you read about the Allies cracking of Ultra (Shark, Enigma) during WWII,
> you can see the relevance of this tenet.  The German use of rotors and plugs
> seemed to make it an invincible encryption engine.  But the Bletchley staff
> understood the basic mechanism and devised a way to 
> Separate the effects of the rotors from the effects of the plugs.  As it
> turned out, the plugs contributed very little to the security of Ultra.  The
> Germans would have done better by using more rotors (5-10) and left the
> plugs out completely. The result would have been a somewhat larger but
> simpler machine that was easier to use but far more difficult to crack.
>
> Please feel free to flame me for butting in w/o being invited  :-)

If it helps at all, I'm utterly confused by your response and the
relevancy.  :-)
-- 
Tim Greer <chatmaster () charter net>


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