[146649] in cryptography@c2.net mail archive
Re: [Cryptography] People should turn on PFS in TLS (was Re: Fwd:
daemon@ATHENA.MIT.EDU (Peter Saint-Andre)
Fri Sep 6 12:37:30 2013
X-Original-To: cryptography@metzdowd.com
Date: Fri, 06 Sep 2013 10:20:42 -0600
From: Peter Saint-Andre <stpeter@stpeter.im>
To: "Perry E. Metzger" <perry@piermont.com>
In-Reply-To: <20130906103607.0a876c6d@jabberwock.cb.piermont.com>
Cc: Cryptography Mailing List <cryptography@metzdowd.com>,
james hughes <hughejp@mac.com>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
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On 9/6/13 8:36 AM, Perry E. Metzger wrote:
>>> One solution, preventing passive attacks, is for major
>>> browsers and websites to switch to using PFS ciphersuites (i.e.
>>> those based on ephemeral Diffie-Hellmann key exchange).
>
> It occurred to me yesterday that this seems like something all
> major service providers should be doing. I'm sure that some voices
> will say additional delay harms user experience. Such voices should
> be ruthlessly ignored.
+1
In practice, how do we make that happen? On the XMPP network we're
pushing to make sure that all client-to-server and server-to-server
hops are encrypted (yes, I know, per-hop encryption is not enough, we
need end-to-end encryption too). Is there a handy list of PFS-friendly
ciphersuites that I can communicate to XMPP developers and admins so
they can start upgrading their software and deployments?
Thanks!
Peter
- --
Peter Saint-Andre
https://stpeter.im/
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