Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B8B2640F for ; Fri, 2 Jun 2017 16:07:23 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-wm0-f50.google.com (mail-wm0-f50.google.com [74.125.82.50]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 3B8621B4 for ; Fri, 2 Jun 2017 16:07:19 +0000 (UTC) Received: by mail-wm0-f50.google.com with SMTP id 7so29232471wmo.1 for ; Fri, 02 Jun 2017 09:07:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=eOP8GBimgyxM1cV9AYhytNCd4QLP7SQ+ItALHT92ggs=; b=M7c199DJIxTgzNVDz3ETY58LIGBPG2W0EhTXN8ZrhtrZUfhKx2mfObTh8EEBKDvZoq xYVZ8ksnEH+67JO1pquNK+NX5zxbMv3N3rSwNltt/vDnt3m+nkdCLwEAMCu3Wy//FUcJ PL4YohMnQxQ+ap6Mez9w2ZrON9gDLf9LbaA6pi550jLw8Ur91ybyfOCx2sNzbVH3qb3s toPFjyY4Z/EoXllYiQbYiq/ikoMOJJNr3Akke7UlvFHqcyl4pS9kj8soaDVqsCRmgH4r /aT4calLX4JqJjCRPtXUGQA/bZCu/60P7ZIGnl3U8tAnvHBPDtn1YuVUWKB2qCI66qLe i+lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=eOP8GBimgyxM1cV9AYhytNCd4QLP7SQ+ItALHT92ggs=; b=h3RV+K/GtLzp9EFuldtB9mG630HyuxHLDTsVUCE2VRJYGwk+6k92ugICZtq8OLlncE 1A2GPXrh6PDavUwCANdw4/He7c6UPIY4/YuBDFGtuIUq0Ds7yb6DVEFbDDPKeKFCdnfH UrNZoWv2vbNUgP5GmrMoZ6ms7gogNNpoDfkOrvVyamIVLRuI/OejS27vh861xy0vKWZL +Y3lv2wUxzUK1X9c8ioWm8OnFm1YXTH3YNlEOI3zdaC68FrSDu2mT0IE6M8eGPNAf5jC pS8aVYjCAwUQlGv5PKXZpqjBAQDmV5Zx4N8dyoWIci5cD4FCeo2aJloq4UTXKz7WiQht n8sw== X-Gm-Message-State: AODbwcARC6kVChNbDbGMOX7Opc9kc2V+DhHT3ewWLJS5xw5W8PUBf9jT 5Y3CmhWugUa/P3wSHxhovH9heP6TZA== X-Received: by 10.28.20.198 with SMTP id 189mr35294wmu.17.1496419637886; Fri, 02 Jun 2017 09:07:17 -0700 (PDT) MIME-Version: 1.0 Received: by 10.223.150.204 with HTTP; Fri, 2 Jun 2017 09:07:17 -0700 (PDT) Received: by 10.223.150.204 with HTTP; Fri, 2 Jun 2017 09:07:17 -0700 (PDT) In-Reply-To: References: <73a6d59a-7e79-5d48-40cd-5c6f59abc122@gmail.com> From: Chris Pacia Date: Fri, 2 Jun 2017 12:07:17 -0400 Message-ID: To: Gregory Maxwell Content-Type: multipart/alternative; boundary="001a1145b3f6f3c0460550fc5844" X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] BIP Proposal: Compact Client Side Filtering for Light Clients X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Jun 2017 16:07:23 -0000 --001a1145b3f6f3c0460550fc5844 Content-Type: text/plain; charset="UTF-8" On Jun 1, 2017 10:28 PM, "Gregory Maxwell" wrote: Really bad for privacy. As I mentioned the issue is the potential collision with the block filter, but bloom filters by themselves aren't inherently bad for privacy. They just reduce the anonymity set. The reason bip37 doesn't work for privacy is how the filters have to be used/abused to make it work. That's not what I mentioned above. Data for transactions at the tip is only 14kb/s-- potentially less if segwit is in use and you're not getting witnesses. Is that really that burdensome? Your not running that on mobile. --001a1145b3f6f3c0460550fc5844 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Jun 1, 2017 10:28 PM, "Gregory Maxwell" <greg@xiph.org> wrote:

Really bad for privacy.=C2=A0

As I mentioned the issue is the poten= tial collision with the block filter, but bloom filters by themselves aren&= #39;t inherently bad for privacy. They just reduce the anonymity set. The r= eason bip37 doesn't work for privacy is how the filters have to be used= /abused to make it work. That's not what I mentioned above.

Data for transactions at the tip is= only
14kb/s-- potentially less if segwit is in use and you're not getting witnesses. Is that really that burdensome?

Your not running that on mobile= .
--001a1145b3f6f3c0460550fc5844--