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Added something to DHT_hardening.txt

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irungentoo 2013-07-13 10:01:19 -04:00
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docs/DHT_hardening.txt
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@ -32,3 +32,39 @@ power devices)
Make each node test other nodes to see if they respond correctly before sending
them as part of their send nodes response.
...
=====
<slvr> DHT_hardening.txt > create thousands of "real" nodes that do nothing but
shit up our DHT with fake crap.
<slvr> This can be trivially solved by only storing verifiable data in the DHT.
<slvr> there is one attack you have not considered, which is based on the Sybil
attack
<slvr> I am assuming the DHT does say... a hash of a key in order to determine
which node to store data in, similar to Kad?
<slvr> If there happens to be a malicious node at that DHT address, they might
actively deny storing that data.
<slvr> This can be reduced by storing data at multiple places in the DHT
(equidistant points in DHT address space)
<slvr> Since DHT addresses are public keys, it is computationally infeasible for
an attacker to actively deny all storage locations.
<slvr> Recommended reading: S/Kademlia: A Practicable Approach Towards Secure
Key-Based Routing -- http://doc.tm.uka.de/2007/SKademlia_2007.pdf
<biribiri> Type: application/pdf; Size: 202KiB; Updated: 2033d 19h 32m 5s ago
(Tue, 18 Dec 2007 13:28:18 GMT);
<slvr> Tempering Kademlia with a Robust Identity Based System --
http://www.di.unito.it/~ruffo/concorso/Papers/p2p08.pdf
<biribiri> Type: application/pdf; Size: 145KiB; Updated: 1291d 23h 30m 12s ago
(Tue, 29 Dec 2009 09:30:28 GMT);
<slvr> Also of interest: "An Analysis of BitTorrent's Two Kademlia-Based DHTs"
--
http://www.tribler.org/trac/raw-attachment/wiki/AutoUpgradeToLastestVersion/
Measurement_of_Bittorrent_DHT_performance_and_deployed_clients.pdf
<biribiri> Type: application/pdf; charset=iso-8859-15; Size: 1.271MiB; Updated:
1669d 20h 25m 15s ago (Tue, 16 Dec 2008 12:44:08 GMT);