[52031] in Cypherpunks
Re: Remailer passphrases
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Tue Mar 12 15:55:07 1996
To: frantz@netcom.com (Bill Frantz)
Cc: cypherpunks@toad.com
In-Reply-To: Your message of "Tue, 12 Mar 1996 12:30:06 PST."
<199603122027.MAA10600@netcom8.netcom.com>
Reply-To: perry@piermont.com
Date: Tue, 12 Mar 1996 15:30:51 -0500
From: "Perry E. Metzger" <perry@piermont.com>
Bill Frantz writes:
> >Signed Diffie-Hellman key exchanges have the property known as
> >"Perfect Forward Secrecy". Even if the opponent gets your public keys
> >it still will not decrypt any traffic for him at all -- it just lets
> >him pretend to be you. Thats one reason why protocols like Photuris
> >and Oakley use the technique.
>
> Unless I am badly mistaken, these exchanges need interaction, which makes
> them unsuitable for simple remailers.
Well, actually, you can play similar tricks with El Gamal...
Perry
