Re: [Bitcoin-development] Meta suggestions for this block size debate

2015-06-01 Thread Ethan Heilman
I second this, I don't have time to read the large number of emails
generated every day from the block size debate. A summary of the various
positions and arguments would be extremely helpful.

On Mon, Jun 1, 2015 at 11:02 PM, gabe appleton gapplet...@gmail.com wrote:

 Also, can we try to get a wiki page for the debate? That way we could
 condense the information as much as possible. I'll be willing to assist if
 the page gets approval.
 On Jun 1, 2015 6:41 PM, Mats Henricson m...@henricson.se wrote:

 Hi!

 My fingers have been itching many times now, this debate
 drives me nuts.

 I just wish all posters could follow two simple principles:

 1. Read up. Yes. All of what has been written. Yes, it will
take many hours. But if you're rehashing what other
smarter people have said over and over before, you're
wasting hundreds of peoples time. Please don't.

 2. Be helpful. Suggest alternatives. Just cristizising is
just destructive. If you want no change, then say so.

 Mats


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[Bitcoin-development] Research on partitioning Bitcoind nodes: Eclipse Attacks on Bitcoin’s Peer-to-Peer Network

2015-03-23 Thread Ethan Heilman
Hi All,

There has been much discussion lately on the dev list about
misbehaving peers and attacks on the P2P network. We'd like to share
our research on partitioning Bitcoind nodes from the rest of the
network.

Eclipse Attacks on Bitcoin’s Peer-to-Peer Network
Abstract: We present eclipse attacks on bitcoin's peer-to-peer
network. Our attack allows an adversary controlling a sufficient
number of IP addresses to monopolize all connections to and from a
victim bitcoin node. The attacker can then exploit the victim for
attacks on bitcoin's mining and consensus system, including
N-confirmation double spending, selfish mining, and adversarial forks
in the blockchain. We take a detailed look at bitcoin’s peer-to-peer
network, and quantify the resources involved in our attack via
probabilistic analysis, Monte Carlo simulations, measurements and
experiments with live bitcoin nodes. Finally, we present
countermeasures, inspired by botnet architectures, that are designed
to raise the bar for eclipse attacks while preserving the openness and
decentralization of bitcoin’s current network architecture.

Full paper available here:
http://cs-people.bu.edu/heilman/eclipse/

Thanks,
Ethan

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[Bitcoin-development] P2P tests: peers.dat's requested

2015-02-15 Thread Ethan Heilman
Hi All,
I am currently running some tests on the peering system in Bitcoind for a
research paper. We hope to develop improvements which we can share with the
community. A wide diversity of real peers.dat files would be very helpful.
If you are willing, please email me your peers.dat.
Thanks,
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