Re: Protocol for requesting private data?

Many thanks Johannes!

I'm CC'ing the list (given that you don't mind) and because I think this is
useful information to share.


Cheers,
Dan.

On Mon, 15 Jun 2020 at 12:06, Sedlmeir, Johannes <
johannes.sedlmeir@fim-rc.de> wrote:

> See https://www.w3.org/TR/vc-data-model/#dfn-verifiable-presentations,
> section 3.3 =)
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> Also, you can download https://github.com/hyperledger/indy-sdk, run a
> local indy system or connect to an existing one, and run the samples.
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> *Von:* Dan Bolser <dan@geromics.co.uk>
> *Gesendet:* Montag, 15. Juni 2020 13:05
> *An:* Sedlmeir, Johannes <johannes.sedlmeir@fim-rc.de>
> *Betreff:* Re: Protocol for requesting private data?
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> Can you expand on what verifiable presentation means in this context?
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> On Mon, 15 Jun 2020 at 12:04, Dan Bolser <dan@geromics.co.uk> wrote:
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> On Mon, 15 Jun 2020 at 11:36, Sedlmeir, Johannes <
> johannes.sedlmeir@fim-rc.de> wrote:
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> Hi Dan,
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> of course you can reply to all, however I do not know how large the group
> is and whether it is intended for such queries (a am a rather passive
> participant).
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> Also, make sure that you got my point about the verifiable presentation –
> in my opinion, this solution is already smooth and thoughtless no matter
> how complicated the scenario is. Are you familiar with Hyperledger
> Indy/Aries and the respective SDKs?
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> No, I need to learn more. Is there a 'hello world' app I can build using
> them?
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> Many thanks,
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> DAn.
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> Best,
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> Johannes
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> *Von:* Dan Bolser <dan@geromics.co.uk>
> *Gesendet:* Montag, 15. Juni 2020 11:30
> *An:* Sedlmeir, Johannes <johannes.sedlmeir@fim-rc.de>
> *Betreff:* Re: Protocol for requesting private data?
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> Right, small amounts of data can be presented 'ad-hoc', e.g. the website
> itself can just ask me, dude, what's your shoe size.
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> However, I'm thinking about a general protocol type solution that makes
> such requests smooth and 'thoughtless' even when the requested data is
> potentially complex, identifying and/or complex, changing and perhaps
> derived in different ways.
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> Perhaps I didn't pick a great example to capture all that ;-)
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> Would you be OK if I replied with the same as the above back on the list?
> It may help other people see what I'm driving at.
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> Many thanks,
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> Dan.
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> On Wed, 10 Jun 2020 at 20:40, Sedlmeir, Johannes <
> johannes.sedlmeir@fim-rc.de> wrote:
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> Hey Dan,
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> I am not sure whether this is what you want, but you present this during a
> verifiable presentation by making the shoe size a self-attested claim.
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> Hope this helps!
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> Best,
>
> Johannes
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>
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> *Von:* Dan Bolser <dan@geromics.co.uk>
> *Gesendet:* Mittwoch, 29. April 2020 10:56
> *An:* public-vc-wg@w3.org
> *Betreff:* Protocol for requesting private data?
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> Sorry if this is the wrong place to ask...
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> I'm looking for details on how to use SSI to request access to 'private'
> data from a controller. Specifically, I'm thinking about nuggets of data
> that I don't want to put in plain text in a DID document.
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> My example is shoe size. An online shoe shop wants to know my shoe size to
> taylor my browsing experience.
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> Are there specific / concrete proposals on how to negotiate this data?
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> Many thanks,
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> Dan.
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