Re: WebID-TLS using X509 fingerprints

On 11 December 2016 at 15:12, Jacopo Scazzosi <me@jacoscaz.com> wrote:

> Hi all.
>
> Apologies for the late update. We've been experimenting with the NI URIs
> approach (as suggested by Melvin) for the last month or so and decided to
> go with it.
>
> I've thus spent a few hours polishing my experimental module and expanding
> the readme. I've moved its repository to https://github.com/
> jacoscaz/node-netid-ni-tls and renamed the module to "netid-ni-tls" as it
> does implement an out-of-specs variation of the WebID-TLS protocol (as
> pointed out by Kingsley).
>
> In our NetIDs we're using triples such as the following ones:
>
> @prefix cert: <http://www.w3.org/ns/auth/cert#> .
> <ni:///sha-256;VYfZ+POv6qLZGxKBXxDCmtARwzI0mE7A7Xy0hqEHN5Q> a
> cert:X509Certificate;
>     cert:identity <https://jacoscaz.com/me> .
>
> The flexibility that NI URIs provide is exactly what we had been looking
> for.
>

Really very nice!

Should the has be URL friendly, ie convert the + to a - (to make it
base64url ?)

Digest Value:  The digest value MUST be encoded using the base64url
      [RFC4648 <https://tools.ietf.org/html/rfc4648>] encoding, with
no "=" padding characters.


> Cheers.
>
> Jacopo Scazzosi
>
>
> On 15 September 2016 at 17:17:01, Kingsley Idehen (kidehen@openlinksw.com)
> wrote:
> > On 9/15/16 11:32 AM, Melvin Carvalho wrote:
> > >
> > >
> > > On 15 September 2016 at 17:22, Kingsley Idehen > > > wrote:
> > >
> > > On 9/13/16 7:58 AM, Jacopo Scazzosi wrote:
> > > > Hello.
> > > >
> > > > First mail to this list. My name's Jacopo Scazzosi, nice to meet
> > > you all.
> > > >
> > > > I've been recently researching the world of WebID-TLS. The current
> > > > specs seem to dictate the use of RSA. As one of my requirements
> > > is the
> > > > support of different types of keys, I've written a proof-of-concept
> > > > authentication module for nodejs using X509 fingerprint comparison
> > > > instead exponent+modulus comparison. I'm currently using SHA-256
> > > > fingerprints but I plan on leaving the choice of the hash
> > > function up
> > > > to our subjects. Module is here:
> > > > https://github.com/jacoscaz/node-webidentity
> > >
> > > >
> > > > Has support for non-RSA keys been already considered in the past?
> > > >
> > > > Cheers.
> > >
> > > Hi Jacopo,
> > >
> > > We have included fingerprint lookup in our authentication module which
> > > supports WebID+TLS.
> > >
> > > The only issue here is that we are now talking about different
> > > protocol
> > > i.e., not part of the WebID+TLS spec, as it currently stands. Thus, we
> > > currently use the moniker NetID for this particular option.
> > >
> > > Fingerprints are much easier with regards to manual setup of
> > > WebID-Profile documents associated with WebIDs en route to PKI
> > > exploitation in any authentication protocol.
> > >
> > > Anyway, we take the same position as you i.e., its there as an
> > > option :)
> > >
> > >
> > > I wonder if this is worth standardizing?
> > >
> >
> > Realistically, its best done as a "best practice" effort first. Then
> > following lots of interop etc., a case can be made for standardization
> > (which is a protracted process).
> >
> >
> > --
> > Regards,
> >
> > Kingsley Idehen
> > Founder & CEO
> > OpenLink Software (Home Page: http://www.openlinksw.com)
> >
> > Medium Blog: https://medium.com/@kidehen
> > Blogspot Blog: http://kidehen.blogspot.com
> > Twitter Profile: https://twitter.com/kidehen
> > Google+ Profile: https://plus.google.com/+KingsleyIdehen/about
> > LinkedIn Profile: http://www.linkedin.com/in/kidehen
> > Personal WebID: http://kingsley.idehen.net/dataspace/person/kidehen#this
> >
> >
>
>
>