From: Alan Reiner <etotheipi@gmail•com>
To: bitcoin-development@lists•sourceforge.net
Subject: Re: [Bitcoin-development] Bloom bait
Date: Sat, 07 Jun 2014 15:44:07 -0400 [thread overview]
Message-ID: <53936B87.3060804@gmail.com> (raw)
In-Reply-To: <CANEZrP0BEod6b5joJBMPDv_NAxAh9Kio3aniZ3sH6f9Q4nozpQ@mail.gmail.com>
On 06/07/2014 07:22 AM, Mike Hearn wrote:
>
> You can send different bloom filters to different peers too, so I'm
> not sure why you're listing subsetting as a unique advantage of prefix
> filters.
>
>
Please let me know if we've gone down this path before, but it would
seem that the more different bloom filters you create, the more
information you give away. It would be most useful to create a single
bloom filter that captures every address you ever intend to use (say a
look ahead of 1000 addresses), and then only ever communicate that.
Once people see multiple filters that you produce, they can start
looking at the intersection of them to reduce the identity space. I
would expect that after enough bloom variants, they could figure out a
perfect subset of blockchain addresses in your wallet. (I suppose you
could intentionally select an extra 20% addresses to include in every
bloom filter, but it's a hack).
Similarly, if you keep updating your bloom filter to include more
addresses, the difference in what passes through the previous one and
the new one gives away information about new addresses you created.
next prev parent reply other threads:[~2014-06-07 19:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-06 8:19 [Bitcoin-development] NODE_BLOOM service bit Peter Todd
2014-06-06 8:48 ` Adam Back
2014-06-06 9:03 ` Gregory Maxwell
2014-06-06 9:11 ` Peter Todd
2014-06-06 9:04 ` Peter Todd
2014-06-06 10:45 ` Adam Back
2014-06-06 16:46 ` [Bitcoin-development] Bloom bait Peter Todd
2014-06-06 16:58 ` Gregory Maxwell
2014-06-06 17:05 ` Peter Todd
2014-06-06 17:10 ` Gregory Maxwell
2014-06-06 17:45 ` Peter Todd
2014-06-07 11:22 ` Mike Hearn
2014-06-07 19:44 ` Alan Reiner [this message]
2014-06-08 21:45 ` Peter Todd
2014-06-10 10:41 ` Mike Hearn
2014-06-08 21:35 ` Peter Todd
2014-06-10 10:38 ` Mike Hearn
2014-06-10 13:02 ` Jeff Garzik
2014-06-10 17:08 ` Peter Todd
2014-06-11 8:57 ` Mike Hearn
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