[5155] in cryptography@c2.net mail archive
Re: secure (proactive?) clock synchronization
daemon@ATHENA.MIT.EDU (Marc Horowitz)
Mon Jul 19 22:59:52 1999
From: Marc Horowitz <marc@mit.edu>
To: amir.herzberg@il.ibm.com
Cc: cryptography@c2.net
Date: 19 Jul 1999 19:35:44 -0400
In-Reply-To: amir.herzberg@il.ibm.com's message of "Mon, 19 Jul 1999 08:51:47 +0300"
amir.herzberg@il.ibm.com writes:
>> We've been recently working on what seems like a neat new clock
>> synchronization protocol, which will hopefully offer proactive security
>> (recovery from penetrations, see http://www.hrl.il.ibm.com/proactive).
>> Surprisingly, it also appears a very practical protocol. It has been some
>> time since I last worked on clock synchronization, so I wonder, what is the
>> state of the art - practical protocols (any substantially change in NTP
>> recently or any serious alternative), and protocols designed to withstand
>> attackers (of course I'll be esp. interested if there's anything with some
>> recovery properties!!).
Last I checked, the IETF was spinning up a working group to work on
secure time synchronization again. I can't find any reference to it
on the IETF web site right now, but I'm sure they'd appreciate a good
candidate protocol.
Marc
