Re: Nontrivial capability graphs with mistrusting parties

Ben Laurie <[email protected]> Tue, 5 May 2015 12:49:34 +0100

Newsgroups	gmane.comp.capabilities.general
Message-ID	<CABrd9SQtFBdpf+x+LP_gn=uDLPDCJd8g4qbgCpDsL++dYtXTfw@mail.gmail.com>

On 4 May 2015 at 18:51, Marc Stiegler <[email protected]> wrote:
> So, this has been a topic of conversation for some of us for over a decade.
> A couple of us even did a startup company to be the third party to host this
> interaction :-)
>
> AFAIK,the only general-purpose solution that has arisen since then that
> offers an elimination of the trusted third party is the bitcoin blockchain.

Gah!

a) Certificate Transparency's underlying mechanism eliminates TTPs.

b) The blockchain doesn't (you have to trust those who set checkpoints).

c) The blockchain is horribly inefficient.

d) Take a look at CONIKS (a derivative of CT that allows some level of
secrecy in a publicly verifiable log).