From owner-freebsd-current@FreeBSD.ORG Sun Mar 6 14:56:32 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4338C1065676 for ; Sun, 6 Mar 2011 14:56:32 +0000 (UTC) (envelope-from erob@gthcfoundation.org) Received: from relais.videotron.ca (relais.videotron.ca [24.201.245.36]) by mx1.freebsd.org (Postfix) with ESMTP id 1CF268FC20 for ; Sun, 6 Mar 2011 14:56:31 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=ISO-8859-1 Received: from [192.168.0.100] ([184.162.50.38]) by vl-mh-mrz21.ip.videotron.ca (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTP id <0LHN004WJ5HFSB40@vl-mh-mrz21.ip.videotron.ca>; Sun, 06 Mar 2011 09:56:03 -0500 (EST) Message-id: <4D73A085.4030009@gthcfoundation.org> Date: Sun, 06 Mar 2011 09:56:05 -0500 From: Etienne Robillard Organization: Green Tea Hackers Club User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.16) Gecko/20101227 Icedove/3.0.11 To: Hans Petter Selasky References: <4D7398C6.8030800@gthcfoundation.org> <201103061533.32138.hselasky@c2i.net> In-reply-to: <201103061533.32138.hselasky@c2i.net> X-Enigmail-Version: 1.0.1 Cc: adrian@freebsd.org, freebsd-current@freebsd.org Subject: Re: can somebody explains OFDM in FreeBSD? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: erob@gthcfoundation.org List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Mar 2011 14:56:32 -0000 On 06/03/11 09:33 AM, Hans Petter Selasky wrote: > On Sunday 06 March 2011 15:23:02 Etienne Robillard wrote: > >> Hi, as the subject line implies, can someone explains why OFDM (Orthogonal >> Frequency Division Multiplexing) is required for running run(4) ? Is there >> any (safer) alternative to OFDM? >> >> If not, could the FreeBSD security team verify the the safety of OFDM >> derived >> drivers (in particular wireless ethernet based nics) so that no ones get >> hurt being >> a WLAN (802.11ng ethernet-class) subcarrier ? >> > As per my knowledge OFDM is a carrier format which is handled by the hardware. > Is there anything in particular you want to high-light? > > --HPS > Yes, from a security perspective, could radiance from ELF/VLF operating devices as "ethernet-class subcarriers" which is part of the OFDM spec be considered harmful? if not is there any OFDM code in OpenBSD? Cheers, references: 1. Orthogonal Frequency Division Multiplexing (OFDM) https://gthc.org/investigations/pub/armstrong.pdf -- Etienne Robillard Company: Green Tea Hackers Club Occupation: Software Developer (and CEO) E-mail: erob@gthcfoundation.org Work phone: 450-936-2123 Website (Company): https://gthc.org/ Website (Blog): https://gthc.org/blog/ PGP public key fingerprint: F2A9 32EA 8E7C 460F 1728 A1A7 649C 7F17 A086 DDEC During times of universal deceit, telling the truth becomes a revolutionary act. -- George Orwell If a free society cannot help the many who are poor, it cannot save the few who are rich. -- John F. Kennedy