On Mon, Nov 03, 2003 at 10:51:22PM -0600, Tom Kaitchuck wrote:
> On Monday 03 November 2003 08:46 pm, Toad wrote:
> > > They don't have to be world writable. The node that has it writes to it.
> > > If it is under an SSK and is signed by that key, it can't do anything and
> > > get away with it. Then it enforces only allowing the other keys listed to
> > > append their own signed section, that consists of a time stamp, which
> > > signifies incrementing the version number by one. So there is no part of
> > > the key that cannot be verified to have come from the original publisher
> > > or someother person that they trust in incrementing it. Of course that
> > > other person could send hundreds of increment requests. (Although it
> > > would be easy to limit them to say one a minute or something) It would be
> > > obvious who was doing it, just from fetching the key, and then the
> > > original author could revoke their key.
> >
> > They have to be world writable *for frost*.
> 
> Well, for the most part you could just get away with a private board, that 
> would add you to the list if you submitted your key to a write only board. 
> However for some things you might want one that anyone with a key could 
> update. So I suppose the author should be able to do that. Supposing they 
> were restricted by the author (Specified in the TUK) to one message per 
> minute, or something. Then a used could generate lots of keys and send lots 
> of update messages to the board. That would be a problem. (Perhaps some sort 
> of voting mechanism where if so many people say it does not work it gets 
> reverted?) Or you could just have an SSK anarchy sort of thing where everyone 
> uses a single secondary key.
> 
> None the less people could flood boards now, it's just that the software stops 
> requesting keys if they don't seem to be there or get tagged as spam or 
> blocked by the user. We could just do the same thing. Then worst case 
> scenario, we have what we have now.

AFAICS it would be worse with TUKs. It's a different kind of flooding
attack - one that would make the TUK useless by forcing the client to
poll the KSKs instead, because the TUK has a ridiculous index number.

-- 
Matthew J Toseland - [EMAIL PROTECTED]
Freenet Project Official Codemonkey - http://freenetproject.org/
ICTHUS - Nothing is impossible. Our Boss says so.

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