From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dawid Ciezarkiewicz Subject: Re: [RFC] Ethernet Cheap Cryptography Date: Wed, 18 Oct 2006 16:31:40 +0200 Message-ID: <200610181631.41433.dpc@asn.pl> References: <200610151820.22867.dpc@asn.pl> <17717.40394.531846.695392@localhost.localdomain> <200610181115.12471.dpc@asn.pl> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org Return-path: Received: from apollo.asn.pl ([85.14.104.1]:31191 "HELO apollo.asn.pl") by vger.kernel.org with SMTP id S932100AbWJRObp (ORCPT ); Wed, 18 Oct 2006 10:31:45 -0400 To: "Stephen J. Bevan" In-Reply-To: <200610181115.12471.dpc@asn.pl> Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wednesday, 18 October 2006 11:15, Dawid Ciezarkiewicz wrote: > > * Given your desire not to change the size of the payload you have no > > space for MAC. This makes it easier (but by no means easy) to alter > > the payload in such a way that it is still decrypted and considered > > valid. > > Could you explain it more? I don't understand. You mean MAC as ... ? Oh. Sorry. You mean message authentication code. Well - ccrypt have to live without it. From the start I knew that integrity will be the weakest point of ccrypt.