From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 7FFC0412 for ; Fri, 12 Aug 2016 00:36:10 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-ua0-f177.google.com (mail-ua0-f177.google.com [209.85.217.177]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id C3C1C159 for ; Fri, 12 Aug 2016 00:36:09 +0000 (UTC) Received: by mail-ua0-f177.google.com with SMTP id 74so19532894uau.0 for ; Thu, 11 Aug 2016 17:36:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=o17lpvb9a+LjNmUDUmyGMooPt8SybX7AqlTrbMV+SJg=; b=PalIoqsCIOiFkKNrBqpH5PGQOTU5vxfqwnRnWVZxfIBbHP/Y5oDxp2Quatk0WvCjby bGEocGQmrGjoIZEyxt9n1MniWKCpMGSU99fGV+s9kn+/OcWslWXBCmq17ruIS2xd+CNp IfcXyMGimFaLK9bXFQ0No1KwwUIypVgBwtugZXVww9j5xhpS02zZbyCRoHh8qk77T8Mi VomP9cQccRNcgSCtKFcBlsx15w0g6V4HmN4wnJvyQjV0a5qTJuIEZACwLSxY72IHSWPI IP7OySfnZLXy34JQKriwc4aj3I0LjdyfkIbRJ+7bY0nV8KTfhaP4U0RafOA5tWicy9V9 H//A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=o17lpvb9a+LjNmUDUmyGMooPt8SybX7AqlTrbMV+SJg=; b=jv8EJyVJISdou9J0fn0qdSK+SH/ccklaAS6dma1PugIOaee2xMzp5V5B0eu5PGCeeC 7JvZqztDyiP4zBb00MS8OQjhYxznIpGZun7aE7RJ7+y4HiqEkYLrCqwZ/7/yMV/uEBK2 KdhJOwnY/zDleImVbKPWmIcEQdHK8V6uFMkBCI31cy01NHKmSElE6rcA1arHFgBu14ex qNxTO6qCMPnEzg9MEVq/EQqrv05kXch9pcu7O9KXoOxZsg690cLHuZNqNGS5btAymv04 xbHv+9O30L25eCT1S+zDWeeQwZPfh/qqnelxoLCxj9qcE6FTVW2kxrsjG3EqeRUMXRxp 0RjA== X-Gm-Message-State: AEkoous9/XPMMrrD/U4TMufQHXbQXcDfccyNwIbR7PWHY/uMSaev9NsNVb3Lw+UF/r2En8vnzaWgOc9bcAfsIg== X-Received: by 10.176.80.166 with SMTP id c35mr6408523uaa.19.1470962169029; Thu, 11 Aug 2016 17:36:09 -0700 (PDT) MIME-Version: 1.0 Sender: gmaxwell@gmail.com Received: by 10.103.118.69 with HTTP; Thu, 11 Aug 2016 17:36:07 -0700 (PDT) In-Reply-To: References: From: Gregory Maxwell Date: Fri, 12 Aug 2016 00:36:07 +0000 X-Google-Sender-Auth: PyXORht-Zw6-aTtJJI6RcSkG_ks Message-ID: To: Erik Aronesty , Bitcoin Protocol Discussion Content-Type: text/plain; charset=UTF-8 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] BIP Number Request: Addresses over Audio 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, 12 Aug 2016 00:36:10 -0000 On Thu, Aug 11, 2016 at 8:37 PM, Erik Aronesty via bitcoin-dev wrote: > Still not sure how you can take a BIP32 public seed and figure out if an > address was derived from it though. I mean, wouldn't I have to compute all > 2^31 possible public child addresses? Which would take a quad core laptop about 8 hours with competent software And presumably you're not using the whole 2^31 space else the receiver also has to do that computation...