From owner-freebsd-questions@FreeBSD.ORG Tue Jan 1 19:11:38 2013 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 7EB74DC5 for ; Tue, 1 Jan 2013 19:11:38 +0000 (UTC) (envelope-from freebsd-questions-local@be-well.ilk.org) Received: from asbnvacz-mailrelay01.megapath.net (asbnvacz-mailrelay01.megapath.net [207.145.128.243]) by mx1.freebsd.org (Postfix) with ESMTP id 400BE8FC0A for ; Tue, 1 Jan 2013 19:11:37 +0000 (UTC) Received: from mail3.sea5.speakeasy.net (mail3.sea5.speakeasy.net [69.17.117.42]) by asbnvacz-mailrelay01.megapath.net (Postfix) with ESMTP id C37B3A71599 for ; Tue, 1 Jan 2013 14:11:30 -0500 (EST) Received: (qmail 4130 invoked from network); 1 Jan 2013 19:11:30 -0000 Received: by simscan 1.4.0 ppid: 7683, pid: 30006, t: 0.1669s scanners: clamav: 0.88.2/m:52/d:10739 Received: from unknown (HELO be-well.ilk.org) ([66.92.78.145]) (envelope-sender ) by mail3.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 1 Jan 2013 19:11:30 -0000 Received: from lowell-desk.lan (lowell-desk.lan [172.30.250.8]) by be-well.ilk.org (Postfix) with ESMTP id 7762133C1D; Tue, 1 Jan 2013 14:11:24 -0500 (EST) Received: by lowell-desk.lan (Postfix, from userid 1147) id C7C0C39855; Tue, 1 Jan 2013 14:11:23 -0500 (EST) From: Lowell Gilbert To: tak.official@gmail.com Subject: Re: ssh server hashcode change on nanoBSD References: <20130101154021.322bef33.freebsd@edvax.de> Date: Tue, 01 Jan 2013 14:11:23 -0500 In-Reply-To: (takCoder's message of "Tue, 1 Jan 2013 18:59:05 +0330") Message-ID: <44y5gciuqs.fsf@lowell-desk.lan> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: freebsd-questions@freebsd.org List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jan 2013 19:11:38 -0000 Don't top-post, please. takCoder writes: > but now, a questions occurred to me about this ssh key. > as i don't know enough about its process, would you please tell me whether > this key is a shared key for all ssh clients who send a request? or it > differs as the client changes? There are a number of keys involved in ssh. The host keys are used at the start of the connection to make sure that some other machine doesn't impersonate the one you wanted. The encryption of the data happens with per-session keys, which are not only different for each client, but for every session. The two types of keys are not related to each other. > (this question may sound a bit newbiesh, but i don't know much about the > ssh process, sorry :) ) Cryptography in general is quite complicated, and ssh is a lot more complicated than just its cryptography.