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Re: [TLS] tickets or sesssions or both (oh my)

Colm MacCárthaigh <colm@allcosts.net> Thu, 04 September 2014 14:26 UTC

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Date: Thu, 04 Sep 2014 07:26:10 -0700
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From: Colm MacCárthaigh <colm@allcosts.net>
To: Phillip Hallam-Baker <ietf@hallambaker.com>
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Subject: Re: [TLS] tickets or sesssions or both (oh my)
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On Thu, Sep 4, 2014 at 6:58 AM, Phillip Hallam-Baker
<ietf@hallambaker.com> wrote:
> I don't see the issue with PFS and tickets. Tickets are a good way to
> implement PFS, you just need to be careful about how you separate your
> credentials.

Can you explain that some more?  If the credential protecting the
ticket is compromised, or if the ticket encryption is cracked, then
the session key is available to a MITM. That's very different from
DHE, where the session key is derived from materials that never cross
the wire.

-- 
Colm

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