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Re: [Cfrg] ZKP for proving ownership of a credential

Tony Arcieri <bascule@gmail.com> Thu, 04 June 2015 04:13 UTC

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References: <556E63DB.8090904@digitalbazaar.com> <D193B311.6A3A7%paul@marvell.com> <556E7D47.8020403@digitalbazaar.com> <D194E3AD.6A6D8%paul@marvell.com> <556FC192.4040704@sbcglobal.net>
From: Tony Arcieri <bascule@gmail.com>
Date: Wed, 03 Jun 2015 21:12:36 -0700
Message-ID: <CAHOTMVKDMOWbvgUT+WCGHDAYSZtvt=naSvOYjQ0VAdrNrFXfgg@mail.gmail.com>
To: David Jacobson <dmjacobson@sbcglobal.net>
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Subject: Re: [Cfrg] ZKP for proving ownership of a credential
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On Wed, Jun 3, 2015 at 8:10 PM, David Jacobson <dmjacobson@sbcglobal.net>
wrote:

> Keep in mind that Manu's original request was cast in terms of proving
> citizenship and at last age 21.  The solutions that have been mentioned
> address the problem of proving that some key-fob-like device is assigned to
> a person who is a UK Citizen and at least 21. They do not address the issue
> of proving that the person in possession of the device is the person it was
> assigned to.  That is not all that much of a problem with a car.  The owner
> of the car will presumably protect the device quite well, and will only
> loan it to people he/she intends to have access to the car.  But things
> might be different when it comes to under-age kids getting into drinking
> establishments.
>

Confinement is the Gordian Knot of bearer credentials, be they paper or
digital.

-- 
Tony Arcieri

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