Re: code signing with foreign function interface?

[David Kastrup <dak@gnu.org>]

joakim@verona.se writes:

> - We don't necessarily need a complete secure infrastructure for
> this. A simple solution might be to check for the presence of a form
> of GNU license in binary form in the dll. This particular GNU license
> is itself protected by copyright and cannot be combined with other
> works without creating a derived work.

Useless:

     Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
     Everyone is permitted to copy and distribute verbatim copies
     of this license document, but changing it is not allowed.

So you can copy the license into any work you like.  The presence of the
GPL as a binary blob is meaningless with regard to licensing.  A book
may also print the GPL without becoming GPLed.

The GPL becomes relevant only when it is made clear that the acquisition
of some software is governed by it.  Its mere presence in some manner is
not more than a pointer.  If it is needed as a key without legal
meaning, that use is perfectly covered by its license.

-- 
David Kastrup