Return-Path: Delivered-To: apmail-lucene-solr-dev-archive@locus.apache.org Received: (qmail 97902 invoked from network); 8 Dec 2006 22:43:45 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 8 Dec 2006 22:43:45 -0000 Received: (qmail 77967 invoked by uid 500); 8 Dec 2006 22:43:53 -0000 Delivered-To: apmail-lucene-solr-dev-archive@lucene.apache.org Received: (qmail 77943 invoked by uid 500); 8 Dec 2006 22:43:52 -0000 Mailing-List: contact solr-dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: solr-dev@lucene.apache.org Delivered-To: mailing list solr-dev@lucene.apache.org Received: (qmail 77934 invoked by uid 99); 8 Dec 2006 22:43:52 -0000 Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 08 Dec 2006 14:43:52 -0800 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (herse.apache.org: domain of mike.klaas@gmail.com designates 66.249.92.171 as permitted sender) Received: from [66.249.92.171] (HELO ug-out-1314.google.com) (66.249.92.171) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 08 Dec 2006 14:43:42 -0800 Received: by ug-out-1314.google.com with SMTP id k40so952504ugc for ; Fri, 08 Dec 2006 14:43:20 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=nLI7Dchl/xzht66sRcSuhOVXiKdI8KYvenOHnyH1ARfZhm+cPD+9IYTH7FBE5B5ih/46jDAUzd3yCfliRo3fo5TVPH/fNTb8jZF8iP3BimiXRpO8UvkC3pxinjmLFoU7ErFnzVzu7ZUgz2+4/gotWL4lK4VlSXRYBdipi1FLKeI= Received: by 10.78.118.19 with SMTP id q19mr1782985huc.1165617799730; Fri, 08 Dec 2006 14:43:19 -0800 (PST) Received: by 10.78.172.1 with HTTP; Fri, 8 Dec 2006 14:43:19 -0800 (PST) Message-ID: <3d2ce8cb0612081443s7e5bb364p60da9560bd9ea962@mail.gmail.com> Date: Fri, 8 Dec 2006 14:43:19 -0800 From: "Mike Klaas" To: solr-dev@lucene.apache.org, simon.willnauer@gmail.com Subject: Re: Re: "correct" format for the md5 files? In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20A4675A-E0B5-42A2-8AFC-97F0FF0A83EA@whirlycott.com> X-Virus-Checked: Checked by ClamAV on apache.org On 12/8/06, Simon Willnauer wrote: > Oh by the way I do have 2 people in this room being able to find > collisions to md5 within the next 15 minutes. But it is true that this > is quiet hypothetical . > > anyway... Can they also produce a malicious distribution of solr which hashes identically? . It _is_ a valid concern in general (I would never use md5 as a cryptographic hash, e.g., for passwords), but significantly less of a concern for this use. The most important role of the hash is to ensure no corruption occurred during transfer. cheers, -Mike