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Re: [saag] Perfect Forward Secrecy vs Forward Secrecy

Nico Williams <nico@cryptonector.com> Wed, 18 March 2020 15:58 UTC

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Date: Wed, 18 Mar 2020 10:58:45 -0500
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From: Nico Williams <nico@cryptonector.com>
To: Robert Moskowitz <rgm-sec@htt-consult.com>
Cc: "Salz, Rich" <rsalz@akamai.com>, "saag@ietf.org" <saag@ietf.org>
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Subject: Re: [saag] Perfect Forward Secrecy vs Forward Secrecy
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On Wed, Mar 18, 2020 at 10:53:32AM -0400, Robert Moskowitz wrote:
> On 3/18/20 10:48 AM, Salz, Rich wrote:
> > Was the person who asked you to make the change a security person?
> 
> A Sec AD.
> 
> > Can you ask them for a rationale?
> 
> His preference as, "perfection is hard to attain."

The switch from calling it PFS to just FS came a long time ago -- I
don't recall exactly, but it feels like roughly a decade ago.  I'm not
sure why, and "perfection is hard to attain" does seem a bit silly
considering PFS is a term of art, but then, our terms of art get used by
snake oil salespeople.

Not that making one term of art harder to repurpose for snake oil sales
-if that was the intent- will make much of a dent.  But as you note,
this ship has sailed.

Nico
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