On Thu, Oct 16, 2003 at 06:54:27AM -0700, Martin Stone Davis wrote:
> fish wrote:
> >On Wed, Oct 15, 2003 at 06:14:21PM -0700, Martin Stone Davis wrote:
> <snip>
> >>Say that over a long period of time, node A requests keys K1-K1000 from 
> >>node B.  K1-K100 were requested by the operator of node A, while 
> >>K101-K1000 were requested by nodes connected to node A.   Also, K1-K100 
> >>are all related to documents describing plans to overthrow the evil 
> >>government of AAIR (it's a tropical country which depends mostly on 
> >>tourism).  Node B is run by (you guessed it) the AAIR.  At the same 
> >>time, the AAIR is running another node C, which mounts a timing attack 
> >>on node A to see whether it has keys K1-K1000.  Under either solution #1 
> >>or #2, node C would see that node A takes longer to find keys K101-1000 
> >>than it does to find keys K1-K100.  But since the AAIR know that node A 
> >>requested all of the keys, it also knows that the operator of node A 
> >>requested keys K1-K100 and is trying to hide that fact.
> >
> >
> >Hrm, you could claim pcaching, if you turned on pcaching 100% of the time
> >rather than just at 75% or whenever it gets turned on.
> 
> Wouldn't that lead to huge amounts of data not being stored on the 
> network?  Wouldn't it be terrible if everyone decided to strengthen 
> their anonymity by lowering the threshold for pcacheing from 90% to 0%?
> 
> -Martin

I suspect the benefits will be massively outweighed by the gains, as far
as routing and specialization are concerned - new nodes need more data
fast, so that they can get serving, for example. Once the store is full
not only we CAN select what to cache, we HAVE TO. I think we can solve
the anonymity issues by other means, see my other messages.

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

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