public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: bitcoin-list@bluematt.me
To: Jeff Garzik <jgarzik@bitpay.com>,Mike Hearn <mike@plan99.net>
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Combining bloom filters?
Date: Sat, 17 Aug 2013 10:03:41 -0400	[thread overview]
Message-ID: <19192d40-656d-4901-b9e0-165b43420b7d@email.android.com> (raw)
In-Reply-To: <CAJHLa0PfHa9Xinv0rdGUK8PRxR5NMC6h2an2ZGgCaTi_DpFrfQ@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1085 bytes --]

Under some conditions, yes. The filters must have the same parameters (tweak, size, hash count). Bitcoinj implements this in its BloomFilter class.

Matt

Jeff Garzik <jgarzik@bitpay.com> wrote:
>Consider wallet A builds bloom filter A' and wallet B builds bloom
>filter B'.  Can A' and B' be or'd together to form a single bloom
>filter C' ?
>
>-- 
>Jeff Garzik
>Senior Software Engineer and open source evangelist
>BitPay, Inc.      https://bitpay.com/
>
>------------------------------------------------------------------------------
>Get 100% visibility into Java/.NET code with AppDynamics Lite!
>It's a free troubleshooting tool designed for production.
>Get down to code-level detail for bottlenecks, with <2% overhead. 
>Download for free and get started troubleshooting in minutes. 
>http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
>_______________________________________________
>Bitcoin-development mailing list
>Bitcoin-development@lists.sourceforge.net
>https://lists.sourceforge.net/lists/listinfo/bitcoin-development

[-- Attachment #2: Type: text/html, Size: 616 bytes --]

  reply	other threads:[~2013-08-17 14:28 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-17 14:00 [Bitcoin-development] Combining bloom filters? Jeff Garzik
2013-08-17 14:03 ` bitcoin-list [this message]
2013-08-17 14:15 ` Pieter Wuille

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=19192d40-656d-4901-b9e0-165b43420b7d@email.android.com \
    --to=bitcoin-list@bluematt.me \
    --cc=bitcoin-development@lists.sourceforge.net \
    --cc=jgarzik@bitpay.com \
    --cc=mike@plan99.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox