Re: [Cfrg] New Version Notification for draft-whyte-select-pkc-qsh-00.txt

[Simon Josefsson <[e-mail]>]

Peter Gutmann <[e-mail]> writes:

> Simon Josefsson <[e-mail]> writes:
>
>>That is not consistent with my view or experience.  If you publish a library
>>that implements a patented algorithm, and your library is popular enough to
>>attract attention from the patent holder, you will have a hard time.
>
> Only if you're using someone else's patented algorithm inappropriately.  My
> code had IDEA (for PGP 2.x support) in it, I included Ascom Tech's patent
> statement in the docs as they requested giving the T&C under which it could be
> used, and sent them a courtesy note about it.  I got a reply from them that
> said something like "thanks for the note, and all the best with your work". So
> provided you play by the rules (whether you agree with them or not), things
> should be OK.

They realized they couldn't charge you, and that having IDEA in your
product would allow them to charge others.  Others ended up paying for
IDEA, or refused to work with it (like libgcrypt).  This is what I refer
to by "having a hard time".

Going back to the original topic: I don't think what you are describing
is a workable approach for a general patent rule when considering which
algorithms to consider here.

/Simon