On Fri, 15 Jul 2005, Frank Ellermann wrote:
This is just for the BOF.
Okay, that's no problem then. I vaguely recall that William
announced a pending patent application for something in the
meta-signatures, and that's not yet listed on the IPR pages:
It is not part of META-Signature. This was use of cryptographic
signatures (not necessarily META-Signatures as it also applied
to IIM and possibly to S/MIME and PGP) when hostname of the
server that added the signature is part of signed and available
and that can then be used for path authentication such as SPF.
BTW - this described about 1/3 of the patent the other two, I'll
reveal when time is appropriate but neither has anything directly
to do with any key parts of meta-signatures of dkim.
So as far as META Signatures you can assume that its not patent
encumbered (as far as I know), although use of public key in dns
maybe (i.e. see Yahoo and DK), but even there I'm not entirely certain
because Yahoo's application is specific to that data content is
signed where as META-Signatures itself does not do that and only
deal with message header fields (and EDigest and including hash
of data content can be considered separate application that has
long history of similar use such as Content-MD5).
<https://datatracker.ietf.org/public/ipr_list.cgi>
If I release any drafts (or see any other drafts coming from IETF queue)
that have something directly to do with my patent applications, I'll
certainly do appropriate IPR disclosure.
The IPR-link "filed with the IETF" on the mipassoc-page is
broken. Could the draft charter declare all IPR issues as
"off topic" pointing to the IPR list ? IPR was a major pain
in MARID (sure, I know that banning it won't make it go away,
but maybe it's possible to redirect it somehow). Bye, Frank
The key question is not as much IPR but if IPR holder is going to allow
such license that the all application developers have access to standard
technology. And yes, we certainly know how this question turned out
to be a major issue at MARID...
--
William Leibzon
Elan Networks
william(_at_)elan(_dot_)net