No clarification needed: NTRU is patented, with no "free for all" patent grant. It is a complete non-starter for OpenBSD or OpenSSH.
On Tue, 26 May 2015, Douglas Ray wrote: > Thanks William and Ertetlen for clarifying: > > > On 25/05/15 10:09 PM, William Whyte wrote: > > Hi Ertetlen, > > > > The base license for NTRU is GPL v2 or higher. However, there's a > > license to distribute NTRU under GPL alongside open source projects that > > exist under other licenses: see details at > > > > https://github.com/NTRUOpenSourceProject/ntru-crypto/blob/master/FOSS%20Exception.md > > 1. I can't speak for the real developers of OpenBSD. > (and I'm not advocating anything here, just trying to > keep the issues clear). > > 2. The "FOSS exception" clause above won't help with existing > OpenBSD policy, insofar as I understand it here: > http://www.openbsd.org/policy.html > [note section towards end on GPL under "Specific Cases"] > > So NTRU doesn't seem likely. It would require the project > leaders / developers to find some irresistable attraction in > NTRU, so great that they wanted to modify the licence policy. > > 3. I am so out-of-touch I didn't realise new OpenBSD code is > under a re-wording of an ISC licence - not the two-clause BSD - > so OpenBSD may no longer comply with NTRU's "FOSS exception" > clause. > http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/share/misc/license.template?rev=HEAD > > cheers, > Douglas > > > Which NTRU ciphersuite were you implementing? We're in the process of > > specifying a new "hybrid" ciphersuite that allows an NTRU key exchange > > to be run in parallel to a selected "classical" ciphersuite, allowing > > users to use a currently trusted algorithm with NTRU as an additional > > layer of security; I attach the relevant (not yet distributed) Internet > > Draft, we'd value your feedback. > > > > Cheers, > > > > William > > > > > > > > > > > > On Sun, May 24, 2015 at 8:12 AM, ertetlen barmok > > <ertetlenbar...@safe-mail.net <mailto:ertetlenbar...@safe-mail.net>> wrote: > > > > Hello, > > > > Is the NTRU source available via BSD licence? > > > > Thank you. > > > > -------- Original Message -------- > > From: Douglas Ray <doug...@cpan.org <mailto:doug...@cpan.org>> > > To: ertetlen barmok <ertetlenbar...@safe-mail.net> > > Subject: Re: NTRU Open Source Project / Post-quantum era > > Date: Sun, 24 May 2015 20:32:29 +1000 > > > > > to clarify > > > > > > On 24/05/15 1:57 AM, Mike Burns wrote: > > > > On 2015-05-23 05.24.30 -0400, ertetlen barmok wrote: > > > >> https://github.com/NTRUOpenSourceProject > > > > > > > > > > > > https://github.com/NTRUOpenSourceProject/ntru-crypto/blob/master/LICENSE.md > > > > > > > > "NTRU cryptographic IP and reference software may be used and > > modified > > > > to the needs of the user as long as the user adheres to version > > two (2) > > > > or higher of the GPL License" > > > > > > > >> When will LibreSSL have ciphers for the Post-quantum era? > > > > > > > > When you submit the patch -- with the correct license. > > > > > > > > > > > > > > OpenBSD excludes GPL - it uses a BSD licence. > > > > > > Wikipedia claims NTRU is available under GPL or BSD licence. > > > This seems to be contradicted by the NTRU source quoted above. > > > > > > Is there another tree using BSD licencing? > > > > > >
