Re: UUNET Network Encryption Patents

[Jim Thompson <[e-mail]>]

On Jun 17,  8:29pm, Phil Karn wrote:

> Subject: Re: UUNET Network Encryption Patents
> >Filed:		Sep. 13, 1994
> >Filed:		Jan. 19, 1994
>
> All the basic concepts of IP Security (especially including what we
> now call "tunnel mode") have been widely and publicly known since at
> least the original "lunch BOF" that I called at the San Diego IETF
> meeting way back in 1992.  So the validity of these patents is not
> only seriously in doubt, but there is also the interesting question of
> fraud against the PTO for not disclosing all known relevant prior art.
>
> Phil
>
>
>-- End of excerpt from Phil Karn

When the IETF last met in Washington D.C. (I think that was the summer of
1992), there was a lunch where you, I, ji, and someone else where as far as
I know, the original discussion of using ji's IPIP with encryption (e.g.
tunnel-mode) was discussed. JI had mentioned something similar when I was
visiting him at Columbia several months prior to this.

In addition:

ftp.cs.columbia.edu:pub/ji/swipe-26ietf.ps is dated Apr 8, 1993.
ftp.cs.columbia.edu:pub/ji/usenix-sec93.ps.Z is dated Aug 18, 1993.
ftp.cs.columbia.edu:pub/ji/swipeusenix.ps is dated Sep 21, 1993.

Jim