discussion on increasing amount of gpg signatures...

[Florian Weimer]

Owen Blacker <owen@flirble.org> writes:

>> IIRC, the most obvious challenge-response protocol (and the most
>> sensible one) for certifying keys has been patented, and I don't
>> know if the extension to cover (multiple) email addresses is enough
>> to bypass this patent.  (Just in case if you want to do this more
>> regularly.)
>
> Patented where.

In the US.

> We're not all in the same jurisdictions here...  :)

The patent is some kind of business method patent, so it cannot be
patented in most jurisdictions without substantial tweaking.