RE: [Asrg] porkhash: flexible anti-impersonation mail signatures

["Bob Atkinson" <bobatk@exchange.microsoft.com>]

> From: asrg-admin@ietf.org [mailto:asrg-admin@ietf.org] On Behalf Of
> william@elan.net
> Sent: Wednesday, April 02, 2003 11:00 PM


> This is not unique to porkhash, many if not majority of proposals
either
> directly or indirectly rely on source or some central server being
> reachable for confirmation (all certificate based proposals, my
callback
> verification proposals, RMX - have to have working dns server, etc.)

True.

However, one notable difference is that RMX and similar ideas make use
of the one central server (DNS) that must necessarily *already* exist in
order that one can even receive mail in the first place.

This is a qualitative difference from having to set up some additional
server, though the exact flavor and degree of that difference isn't
clear (to me at least).

	Bob

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