From owner-freebsd-hackers@FreeBSD.ORG Sun Sep 2 14:51:29 2007 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9DCCC16A418 for ; Sun, 2 Sep 2007 14:51:29 +0000 (UTC) (envelope-from klausps@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.184]) by mx1.freebsd.org (Postfix) with ESMTP id 3856B13C467 for ; Sun, 2 Sep 2007 14:51:29 +0000 (UTC) (envelope-from klausps@gmail.com) Received: by nf-out-0910.google.com with SMTP id k4so986850nfd for ; Sun, 02 Sep 2007 07:51:05 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=kzNdifKQnmK3wQIxmfxWawJjXe91lBpNPe1+9qcerOloHZsn0fGBZPhkK1qEGgVOMOclP+0yoDiOy3KwhdzG+12fQu2IJB+OGZRezbeskx/voXQDDGBfKgeGU/jzqYSmwwbqLNVKPeNBr43Fzk+cH1aq0igl0YvEG9SY3Ykj3Y0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=aj/UgKOucKRR63njsfzBYG8Wdn0z6YMwWr9RAn2rggHgG4T5Q+ckLJykkcOkIxSXYFEWt43XMOqYekt7pLd/q6qzltxB1Pt8zV9LFKo3IjRWxlULkKnfBhydtDrcTsQ5Z4cpsxnwsrPlZjIQl8Lk/9znZXAjkJ2oCRO0Eg18Aa0= Received: by 10.78.206.9 with SMTP id d9mr2651083hug.1188743118066; Sun, 02 Sep 2007 07:25:18 -0700 (PDT) Received: by 10.78.143.14 with HTTP; Sun, 2 Sep 2007 07:25:18 -0700 (PDT) Message-ID: <45910cf20709020725u1741704dn97c275489bc4c4e9@mail.gmail.com> Date: Sun, 2 Sep 2007 11:25:18 -0300 From: "Klaus Schneider" To: freebsd-hackers@freebsd.org In-Reply-To: <20070902104508.GB19678@britannica.bec.de> MIME-Version: 1.0 References: <45910cf20709011027o546363e2h4f5646b15e0f84a2@mail.gmail.com> <20070901183020.6a098955@bhuda.mired.org> <20070902104508.GB19678@britannica.bec.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: Exclusive binary files X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 02 Sep 2007 14:51:29 -0000 2007/9/2, Joerg Sonnenberger : > > On Sat, Sep 01, 2007 at 06:30:20PM -0400, Mike Meyer wrote: > > On Sat, 1 Sep 2007 14:27:42 -0300 "Klaus Schneider" > wrote: > > > Well, anybody know a way to make the FreeBSD run just binaries that I > have > > > compiled? > > > > In general, it's impossible. There's no way the system can know that > > you compiled a binary. There are a number of things you could do with > > a custom kernel and toolchain to indicate that you compiled the binary > > (like Peter's changing of ELF OSABI), but that's just security through > > obscurity. If someone figures out those changes and replicates them, > > you lose. > > You mean using cryptographic hashes to ensure that binaries match those > you compiled is impossible? Something like NetBSD's veriexec? > > Joerg > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" > Yes. The alternative would be somethink like veriexec, using hashes into elf binaries... -- /* * Klaus Schneider */