From owner-freebsd-questions@FreeBSD.ORG Mon May 25 13:06:30 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 623A51065670 for ; Mon, 25 May 2009 13:06:30 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from ey-out-2122.google.com (ey-out-2122.google.com [74.125.78.26]) by mx1.freebsd.org (Postfix) with ESMTP id E265A8FC15 for ; Mon, 25 May 2009 13:06:29 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: by ey-out-2122.google.com with SMTP id 9so646774eyd.7 for ; Mon, 25 May 2009 06:06:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:subject :message-id:in-reply-to:references:x-mailer:mime-version :content-type:content-transfer-encoding; bh=0DWCouB9Rqs1p3ct37uJtJ88Op+vl1JQLmYgBoZ5srs=; b=DhKYJRQlRj/iBbuRBPUm1g/vkEGYwH+EbJGkfANXp0X02hJ9GLXua0YQ0duYHKjHjE EXzdGnZ2DjMNyW5WTvpwkl+ooHsAflySjx0WiwJWYvu3PF63XcW76d0Im+0h5JTMG236 CZzC0pyuWarkRR+qjfCe/KODL/5ALqKbQf3pc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=date:from:to:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type:content-transfer-encoding; b=e3kyHKvalMzpQZFcsMfge8LgHoRYDjHbaloDRnF3HV43SezQBCN8ZttqHq0fv1DHYS Xvx2AOQoEDkr2Hc1sIA/VDD1pptokAi+YhniwqqXFAWFRVNtw1Va2KTawaMRjzoUC3PG 4FBZm0E9bCrx9+clbKpCOzbtB0APCL0JdwecY= Received: by 10.216.8.65 with SMTP id 43mr1705566weq.168.1243256788527; Mon, 25 May 2009 06:06:28 -0700 (PDT) Received: from gumby.homeunix.com (bb-87-81-140-128.ukonline.co.uk [87.81.140.128]) by mx.google.com with ESMTPS id 28sm6279515eyg.24.2009.05.25.06.06.27 (version=SSLv3 cipher=RC4-MD5); Mon, 25 May 2009 06:06:27 -0700 (PDT) Date: Mon, 25 May 2009 14:06:25 +0100 From: RW To: freebsd-questions@freebsd.org Message-ID: <20090525140625.58995d1c@gumby.homeunix.com> In-Reply-To: <26face530905242257m7030933cy4a1171de7a06ee59@mail.gmail.com> References: <26face530905242257m7030933cy4a1171de7a06ee59@mail.gmail.com> X-Mailer: Claws Mail 3.7.1 (GTK+ 2.16.1; i386-portbld-freebsd7.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: Secure unsalted or fixed salt symmetric encryption? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 May 2009 13:06:30 -0000 On Sun, 24 May 2009 22:57:35 -0700 Kelly Jones wrote: > and was surprised that doing this to identical files yielded different > results. I then realized "openssl enc" randomly(?) chooses a salt if > you don't supply one. > > I want my backups encrypted, but I also want identical files to > encrypt identically. Thoughts? Then don't use salt - just a fully randomized key.