From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.7 required=5.0 tests=AWL,SPF_NEUTRAL autolearn=disabled version=3.1.3 X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id 290D1BBAF for ; Fri, 5 Dec 2008 08:08:04 +0100 (CET) X-IronPort-AV: E=Sophos;i="4.33,719,1220220000"; d="sig'?scan'208";a="20806383" Received: from concorde.inria.fr ([192.93.2.39]) by mail1-smtp-roc.national.inria.fr with ESMTP; 05 Dec 2008 08:08:04 +0100 Received: from mail4-relais-sop.national.inria.fr (mail4-relais-sop.national.inria.fr [192.134.164.105]) by concorde.inria.fr (8.13.6/8.13.6) with ESMTP id mB5783tH029469 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=OK) for ; Fri, 5 Dec 2008 08:08:03 +0100 X-IronPort-AV: E=Sophos;i="4.33,719,1220220000"; d="sig'?scan'208";a="32210843" Received: from pas38-5-82-244-58-105.fbx.proxad.net (HELO [192.168.0.10]) ([82.244.58.105]) by mail4-relais-sop.national.inria.fr with ESMTP/TLS/AES128-SHA; 05 Dec 2008 08:08:03 +0100 Cc: caml-list@inria.fr Message-Id: From: Alan Schmitt To: Florian Hars In-Reply-To: <4937FFEE.9060709@bik-gmbh.de> Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="Apple-Mail-167-1045576550" Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v929.2) Subject: Re: [Caml-list] Computing with big numbers? Date: Fri, 5 Dec 2008 08:07:59 +0100 References: <999499.25121.qm@web111514.mail.gq1.yahoo.com> <4937FFEE.9060709@bik-gmbh.de> X-Pgp-Agent: GPGMail d55 (v55, Leopard) X-Mailer: Apple Mail (2.929.2) X-Miltered: at concorde with ID 4938D353.000 by Joe's j-chkmail (http://j-chkmail . ensmp . fr)! X-Spam: no; 0.00; schmitt:01 schmitt:01 hars:01 hashes:01 trivial:01 hash:01 nostradamus:98 wrote:01 caml-list:01 alan:02 alan:02 unison:02 unison:02 florian:03 playstation:94 X-Attachments: type="application/pgp-signature" name="PGP.sig" name="PGP.sig" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --Apple-Mail-167-1045576550 Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes Content-Transfer-Encoding: quoted-printable On 4 d=E9c. 08, at 17:06, Florian Hars wrote: > Alan Schmitt schrieb: >> But I don't think this applies here, as the hashes I'm >> looking at are the one used by Unison to identify file contents. > > Then it is *especially* relevant, as it is quite trivial to generate > several files with different content and the same MD5 hash, all you > need is a Playstation 3: > http://www.win.tue.nl/hashclash/Nostradamus/ Thanks for the link, but I wasn't considering a malicious attack: if =20 someone were able to modify my files, I would not worry about Unison =20 not detecting (thus not propagating) a malicious change. Alan= --Apple-Mail-167-1045576550 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAkk4008ACgkQNIAqM4hFUWihngCcCyny1pd/6z2R8g8jm25S+3Of wYcAn0iZrf/Z26xFu+5z4YlsXz/gAvv9 =R4PY -----END PGP SIGNATURE----- --Apple-Mail-167-1045576550--