X-GM-THRID: 1219586308887761264 X-Gmail-Labels: rsgb lf X-Gmail-Received: adda2002caa476310a713684b2e7981b13bb5728 Delivered-To: daveyxm@gmail.com Received: by 10.78.127.1 with SMTP id z1cs249796huc; Thu, 9 Nov 2006 08:02:20 -0800 (PST) Received: by 10.67.20.3 with SMTP id x3mr1577423ugi.1163088140052; Thu, 09 Nov 2006 08:02:20 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id k1si1004064ugf.2006.11.09.08.02.18; Thu, 09 Nov 2006 08:02:20 -0800 (PST) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1GiCDP-00048o-Q2 for rs_out_1@blacksheep.org; Thu, 09 Nov 2006 15:53:19 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1GiCDP-00048f-D0 for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2006 15:53:19 +0000 Received: from warlock.dstl.gov.uk ([192.5.29.10]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1GiCDI-0001g4-Fl for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2006 15:53:19 +0000 Message-ID: <7D653C9C42F5D411A27C00508BF8803D07152DCD@mail.dstl.gov.uk> From: Talbot Andrew To: uk_beacons@yahoogroups.com, uk_beacons@yahoogroups.com, rsgb_lf_group@blacksheep.org Cc: "Gannaway, Julian" , James R Miller Date: Thu, 9 Nov 2006 15:51:50 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) X-Spam-Score: 0.5 (/) X-Spam-Report: autolearn=disabled,AWL=0.545,HTML_MESSAGE=0.001 Subject: LF: Beacon Timestamp idea Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C70416.F87AE546" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_FONTCOLOR_BLUE, HTML_MESSAGE,LINK_TO_NO_SCHEME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Status: O X-Status: X-Keywords: X-UID: 4190 This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C70416.F87AE546 Content-Type: text/plain On my website www.scrbg.org/g4jnt/ I've placed a document (Beacon Timestamp) describing an idea for adding a three letter timestamp transmission to beacons that would allow verification of their reception. The idea is that only the beacon keeper(s) can verify that the received code was actually the one sent at the particular date/time reported. I've already written the code for generating the timestamp into a PIC keyer and its undergoing testing. Still need to add the data format of a few different GPS receivers, then will install on one or more of the Bell Hill beacons at some point in the future. Meanwhile, if there are any cryptologists out there who want to try to show how useless my time hashing algorithm is, and how anyone could falsify reporting, feel free to try to crack it. Andy G4JNT / G8IMR "This e-mail is intended for the recipient only. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely upon this e-mail. If an addressing or transmission error has misdirected this e-mail, please notify the author by replying to this e-mail." "Recipients should note that all e-mail traffic on MOD systems is subject to monitoring and auditing." ------_=_NextPart_001_01C70416.F87AE546 Content-Type: text/html Content-Transfer-Encoding: quoted-printable this mail is unclassifiedBeacon Timestamp idea

On my website www.scrb= g.org/g4jnt/  I've plac= ed a document (Beacon Timestamp)  describing an idea for adding a th= ree letter timestamp transmission to beacons that would allow verificatio= n of their reception. The idea is that only the beacon keeper(s) can veri= fy that the received code was actually the one sent at the particular dat= e/time reported.

I've already written the code for genera= ting the timestamp into a PIC keyer and its undergoing testing.  Sti= ll need to add the data format of a few different GPS receivers, then wil= l install on one or more of the Bell Hill beacons at some point in the fu= ture. 

Meanwhile, if there are any cryptologist= s out there who want to try to show how useless my time hashing algorithm= =20is, and how anyone could falsify reporting, feel free to try to crack = it.

Andy  G4JNT / G8IMR



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