Re: [EXT] Re: LS from GSMA EIG to W3C

Having resparked the conversation in
https://github.com/w3c/vc-di-bbs/issues/84
I have been listening intently and believe this technique can be the basis
for a cryptosuite that allows for unlinkability of selectively disclosed
verifiable credentials. This is a powerful tool that everyone has been
looking forward to since I got into the space. The development of it over
the coming weeks and months really excites me along with many others (as
proven by the subject of this email) and I will do my best to make it a
reality.

Orie, having worked closely with you on this exact thing a couple years ago
I’m bewildered by your quick about face at the 11th hour. I understand your
disagreements with the data integrity work. I understand the crypto isn’t
entirely hardened at ietf. Obviously you’ve been bringing systems online
and have learned new things in that time but I believe there is tremendous
value in vc-di-bbs. Thank you for getting the document to the place it is
now.

Brian

On Sun, Sep 17, 2023 at 3:08 PM Orie Steele <orie@transmute.industries>
wrote:

> Is there a JS implementation that can run in the browser, of BBS selective
> disclosure with data integrity that I can compare against ecdsa-sd and
> sd-jwt?
>
As I said, Greg is the expert to comment on the maturity of the work in
> implementations.
>
> Seems like we probably have a reference implementation to update the spec
> text from though, that seems like a good thing.
>
> Only need 2 codebases to make a W3C standard, so it's not inconceivable
> that it could still make it to TR.
>
> Regards,
>
> OS
>
>
>
> On Sun, Sep 17, 2023, 1:51 PM Manu Sporny <msporny@digitalbazaar.com>
> wrote:
>
>> On Sun, Sep 17, 2023 at 12:33 PM Orie Steele <orie@transmute.industries>
>> wrote:
>> > When they collude (assuming they both understand RDF) they both learn,
>> the other saw "_:uXqefD0KC4zrzEbFJhvdhYTGzRYW3RhjcQvfkpkWqDpc"
>>
>> As I suspected, your information is out of date, the identifiers of
>> the form you are using as examples above are not generated for BBS
>> (for the reasons you outline). See the following thread:
>>
>> https://github.com/w3c/vc-di-bbs/issues/84#issuecomment-1719859829
>>
>> > Most of the commentary still applies to the approach being taken today
>> with Data Integrity Proofs, its just JSON-LD instead of XML.
>>
>> That's already been responded to here (at the bottom):
>>
>>
>> https://github.com/w3ctag/design-reviews/issues/850#issuecomment-1666291319
>>
>> Your comments regarding how "green" an algorithm is have already been
>> responded to here:
>>
>> https://lists.w3.org/Archives/Public/public-credentials/2023Sep/0025.html
>>
>> -- manu
>>
>> --
>> Manu Sporny - https://www.linkedin.com/in/manusporny/
>> Founder/CEO - Digital Bazaar, Inc.
>> https://www.digitalbazaar.com/
>>
>