Re: public key in a verifiable credential

I'm glad to hear that.  My comment was about being careful of the way we
explain things, because of some bad experiences I've had when I was sloppy
in my wording.  When you say "Bob's public key," many people take that to
mean a well-known key validated by some certificate authority.  I have
encountered less confusion when saying, "A public key provided by Bob" or
even better "A public key provided by Bob for this purpose."  There's still
sometimes confusion, just less frequently.

Alan Karp

On Thu, Apr 1, 2021 at 10:10 AM David Chadwick <>

> On 01/04/2021 17:23, Alan Karp wrote:
> On Thu, Apr 1, 2021 at 9:09 AM David Chadwick <>
> wrote:
>> By  Oauth "client" key you actually mean the subject's (in VC
>> terminology) public key. Thus the subject ID is the natural place to put
>> this. Using a DID as the subject's ID is either a direct or indirect way of
>> referencing the subject's public key. So all VCs do this.
> There are many reasons why you would like an authorization certificate to
> be issued to a one-off public key.  Using the term "client key" doesn't
> preclude that but does get people thinking you are referring to the
> client's one and only key.  The same applies to using a DID.  You can
> create a DID on the fly, but most people don't think that way.
> Indeed, and this is exactly what our VC systems does :-)
> Kind regards
> David
> --------------
> Alan Karp

Received on Thursday, 1 April 2021 17:26:25 UTC