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Re: [saag] post-X509 cryptographic identities

Nico Williams <nico@cryptonector.com> Fri, 14 February 2020 20:40 UTC

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Date: Fri, 14 Feb 2020 14:40:10 -0600
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From: Nico Williams <nico@cryptonector.com>
To: Watson Ladd <watsonbladd@gmail.com>
Cc: trutkowski@netmagic.com, Henry Story <henry.story@gmail.com>, Michael Richardson <mcr+ietf@sandelman.ca>, IETF SAAG <saag@ietf.org>
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Subject: Re: [saag] post-X509 cryptographic identities
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On Fri, Feb 14, 2020 at 07:33:14AM -0800, Watson Ladd wrote:
> On Thu, Feb 13, 2020, 2:30 PM Tony Rutkowski <trutkowski.netmagic@gmail.com>
> wrote:
> > Views?
> 
> I'd prefer to focus on real world experience and the lessons learned, and
> solving tractable problems that are serious.
> 
> In this world plenty of economic transactions take place with DNS names as
> the only identifier. Plenty of people are known by monikers that have
> nothing to do with any government: Muhammed Ali, Prince, Kirk Douglass,
> Liberace, etc. The state doesn't determine these: remember "Say my name!"?
> 
> For all the supposed essentially of tying DNS names and cert issuance to
> the real world, the WebPKI has focused on domain control and been widely
> accepted. OV and DV certs have completely failed to deliver, with the
> browser UI becoming depreciated due to serious issues with assuming
> globally unique names and consequent security. OCSP didn't work because CAs
> can't meet the uptime requirements. Shortlived certs can't work because
> they would clog CT logs, and X509 is too hairy for what it is used for now.
> 
> Where is the running code for all these wonderful ideas? Where is the
> demonstration that they will actually add value?

+1.

I'll posit two plausible approaches that don't suck: a) DNS registrars
functioning as PKIX issuers for (effectively) name-constrained
certificates, b) DANE binding issuers for certificates.

Nico
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