On Sat, Nov 2, 2013 at 6:01 AM, <bitcoingrant@gmx.com> wrote:

> In brief, the authentication work as follows:
>
>
>
> Server provides a token for the client to sign.
>
> client passes the signed message and the bitcoin address back to the
> server.
>
> server validates the message and honors the alias (optional) and bitcoin
> address as identification.
>

http://pilif.github.io/2008/05/why-is-nobody-using-ssl-client-certificates/