[14667] in Cypherpunks
Re: Black Eye for NSA, NIST, and Denning
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Fri Jun 3 09:00:01 1994
To: cypherpunks@toad.com
In-Reply-To: Your message of "Fri, 03 Jun 1994 08:01:52 EDT."
<9406031201.AA03789@snark.imsi.com>
Reply-To: perry@imsi.com
Date: Fri, 03 Jun 1994 08:54:25 -0400
From: "Perry E. Metzger" <perry@imsi.com>
"Perry E. Metzger" says:
> However, it can be done in advance, and you can conceivably reuse
> forged LEAFs.
I will point out something that I didn't quite understand myself but
have since discussed with Matt Blaze in some detail -- LEAF checksums
are tied to session keys. You CAN do this in advance but only if your
key exchange will permit you to generate your session keys in advance,
too. Obviously, reusing forged LEAFs requrire requires reusing sesison
keys.
Perry
