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	<title>Kryptoblog &#187; Tillställningar</title>
	<atom:link href="http://www.strombergson.com/kryptoblog/category/tillstallningar/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.strombergson.com/kryptoblog</link>
	<description>Kryptografi och IT-säkerhet på svenska</description>
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		<title>SEC-T 2010</title>
		<link>http://www.strombergson.com/kryptoblog/2010/08/12/sec-t-2010/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/08/12/sec-t-2010/#comments</comments>
		<pubDate>Thu, 12 Aug 2010 20:12:25 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Hårdvara]]></category>
		<category><![CDATA[Inbyggda system]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Krypto]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[konferens]]></category>
		<category><![CDATA[SEC-T]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1353</guid>
		<description><![CDATA[<p><a href="http://www.sec-t.org/">S&#228;kerhetskonferensen <span class="caps">SEC</span>-T</a> anordnas i &#229;r f&#246;r tredje g&#229;ngen och g&#229;r i &#229;r den 9 och 10 September.</p>

	<p><img src="http://www.sec-t.org/assets/templates/2010/images/sec-t_top.png" alt="SEC-T logga" /></p>

	<p>Arrang&#246;rerna har postat agendan f&#246;r konferensen. Tittar jag p&#229; agendan finns det ett par klart sp&#228;nnande presentationer, bland annat <a&#8230;</p>


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			<content:encoded><![CDATA[	<p><a href="http://www.sec-t.org/">S&#228;kerhetskonferensen <span class="caps">SEC</span>-T</a> anordnas i &#229;r f&#246;r tredje g&#229;ngen och g&#229;r i &#229;r den 9 och 10 September.</p>

	<p><img src="http://www.sec-t.org/assets/templates/2010/images/sec-t_top.png" alt="SEC-T logga" /></p>

	<p>Arrang&#246;rerna har postat agendan f&#246;r konferensen. Tittar jag p&#229; agendan finns det ett par klart sp&#228;nnande presentationer, bland annat <a href="http://www.sec-t.org/2010/Speakers.html#mub">en presentation om svagheter i diskkrypteringsprodukter</a> och <a href="http://www.sec-t.org/2010/Speakers.html#andrei">en presentation om (o)s&#228;kerheten hos skrivare</a>.</p>

	<p>F&#246;r den som vill g&#229; p&#229; &#229;rets <span class="caps">SEC</span>-T <a href="http://www.sec-t.org/2010/Registration.html">&#228;r det h&#246;g tid att anm&#228;la sig</a>.</p>


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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Telecomix anordnar konferens på Göteborgs IT-universitet</title>
		<link>http://www.strombergson.com/kryptoblog/2010/06/14/telecomix-anordnar-konferens-pa-goteborgs-it-universitet/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/06/14/telecomix-anordnar-konferens-pa-goteborgs-it-universitet/#comments</comments>
		<pubDate>Mon, 14 Jun 2010 20:24:36 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Tillställningar]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1331</guid>
		<description><![CDATA[<p>Nu p&#229; onsdag 2010-06-16 anordnar <a href="http://telecomix.org/">Telecomix</a> ett <em>kluster av Internet-aktivister</em> en konferens p&#229; <a href="http://www.ituniv.se/">G&#246;teborgs IT-universitet</a>.</p>

	<p><a href="http://telecomix.org/"><img src="http://werebuild.eu/images/telecomix.gif" alt="Telecomix" /></a></p>

	<p>I <a href="http://interfax.werebuild.eu/wp-content/uploads/2010/05/fax.pdf">inbjudan till konferensen</a> skriver Telecomix:  <blockquote>We are Telecomix, a cluster of internet activists who have decided to host a</blockquote>&#8230;</p>


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			<content:encoded><![CDATA[	<p>Nu p&#229; onsdag 2010-06-16 anordnar <a href="http://telecomix.org/">Telecomix</a> ett <em>kluster av Internet-aktivister</em> en konferens p&#229; <a href="http://www.ituniv.se/">G&#246;teborgs IT-universitet</a>.</p>

	<p><a href="http://telecomix.org/"><img src="http://werebuild.eu/images/telecomix.gif" alt="Telecomix" /></a></p>

	<p>I <a href="http://interfax.werebuild.eu/wp-content/uploads/2010/05/fax.pdf">inbjudan till konferensen</a> skriver Telecomix:  <blockquote>We are Telecomix, a cluster of internet activists who have decided to host a small conference duiring the 16th and 17th of June at the IT-university of Gothenburg (www.ituniv.se). It is free of charge for individuals, and anyone is more than welcome! No matter your back- ground or previous knowledges, cipherspace computing is for everyone.<br />
<br />
</p>

	<p>The theme of the conference is cipherspace computing, network security and darknets. A va- riety of talks and presentations will outline the technology and politics of cipherspace, and discuss the consequences of computer networks without leaders or authorities.<br />
<br />
</p>

	<p>During the second day we will host workshops where participants will learn how to use already existing software for accessing and publishing in cipherspace.<br />
The conference is free of charge for internauts, communities and news media. For representa- tives for corporations and state agencies, the cost is <span class="caps">SEK 500</span> for two days. To sign up for the conference, send an e-mail to info@werebuild.eu. We will provide you with billing details and receipts. You are welcome to visit the conference anonymously.<br />
<br />
</p>

	<p>Keep an eye open on http://conference.telecomix.org for updates in the schedule.<br />
<br />
</p>

	<p>To read more about us, visit these sites:<br />
<br />
http://telecomix.org<br />
http://werebuild.eu<br />
http://cryptoanarchy.org<br />
</blockquote></p>

	<p><a href="http://werebuild.eu/wiki/Conference_Schedule">H&#228;r finns mer information om konferensen, schema etc</a>.</p>

	<p>Att d&#246;ma av <a href="http://werebuild.eu/wiki/Conference_Schedule">programmet</a> ser det klart sp&#228;nnande ut, &#228;ven om det &#228;r lite f&#246;r mycket hemlighetsmakeri f&#246;r att jag skall greppa vad allt handlar om egentligen. Jag hinner tyv&#228;rr inte g&#229; sj&#228;lv och skulle uppskatta kommentarer, l&#228;nkar till referat etc.</p>


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		</item>
		<item>
		<title>Call For Papers (CFP) för SEC-T 2010</title>
		<link>http://www.strombergson.com/kryptoblog/2010/03/04/call-for-papers-cfp-for-sec-t-2010/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/03/04/call-for-papers-cfp-for-sec-t-2010/#comments</comments>
		<pubDate>Thu, 04 Mar 2010 21:18:31 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[SEC-T]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1119</guid>
		<description><![CDATA[<p><a href="http://www.sec-t.org/">Svenska s&#228;kerhetskonferensen <span class="caps">SEC</span>-T</a> skickade nyligen ut ett Call For Papers (CFP) f&#246;r &#229;rets konferens:<br />
<a href="http://www.sec-t.org/"><img src="http://www.sec-t.org/assets/templates/2010/images/sec-t_top.png" alt="SEC-T" /></a><br />
<blockquote>We are currently soliciting presentations for the third annual <span class="caps">SEC</span>-T technical security conference in Stockholm on the 9-10th of September.</blockquote>&#8230;</p>


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			<content:encoded><![CDATA[	<p><a href="http://www.sec-t.org/">Svenska s&#228;kerhetskonferensen <span class="caps">SEC</span>-T</a> skickade nyligen ut ett Call For Papers (CFP) f&#246;r &#229;rets konferens:<br />
<a href="http://www.sec-t.org/"><img src="http://www.sec-t.org/assets/templates/2010/images/sec-t_top.png" alt="SEC-T" /></a><br />
<blockquote>We are currently soliciting presentations for the third annual <span class="caps">SEC</span>-T technical security conference in Stockholm on the 9-10th of September. The theme for this year will be &#8220;OMG, it&#8217;s full of stars!&#8221; and if you could weave that into your presentation somehow, that would be cool.<br />
<br />
</p>

	<p>The topics of interest for this conference are information security related, but strongly rooted in the technical realm. For an idea of what we like, please check out the speakers lists from previous years at http://www.sec-t.org/. Anything submitted will be considered and we will judge each proposal by its content and not the name attached.<br />
<br />
</p>

	<p>Talks are 60 minutes with time reserved between slots for Q&#38;A. Proposals should include a short description of the talk contents and a brief speakers bio. Send all submissions to cfp@sec-t.org</blockquote></p>


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		<item>
		<title>Implementera Keccak och tävla om en Himitsu-Bako</title>
		<link>http://www.strombergson.com/kryptoblog/2010/02/02/implementera-keccak-och-tavla-om-en-himitsu-bako/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/02/02/implementera-keccak-och-tavla-om-en-himitsu-bako/#comments</comments>
		<pubDate>Tue, 02 Feb 2010 18:10:30 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Krypto]]></category>
		<category><![CDATA[NIST AHS]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[sha-3]]></category>
		<category><![CDATA[Forskning]]></category>
		<category><![CDATA[hashfunktioner]]></category>
		<category><![CDATA[Keccak]]></category>
		<category><![CDATA[tävling]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1059</guid>
		<description><![CDATA[<p>Teamet bakom <span class="caps">SHA</span>-3 kandidaten, <a href="http://keccak.noekeon.org/">hashfunktionen Keccak</a> har utlyst en implementationst&#228;vling:<br />
<blockquote><br />
We are looking for implementations of Keccak on exotic platforms!<br />
<br />
</blockquote></p>

	<p>We offer a prize for the most interesting implementation of Keccak&#8230;</p>


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			<content:encoded><![CDATA[	<p>Teamet bakom <span class="caps">SHA</span>-3 kandidaten, <a href="http://keccak.noekeon.org/">hashfunktionen Keccak</a> har utlyst en implementationst&#228;vling:<br />
<blockquote><br />
We are looking for implementations of Keccak on exotic platforms!<br />
<br />
</p>

	<p>We offer a prize for the most interesting implementation of Keccak on: &#8211; Graphic cards/GPU<br />
 &#8211; Embedded processors, (e.g. <span class="caps">ARM</span>, Cell processor&#8230;)<br />
 &#8211; any other analog/digital computing device<br />
<br />
<br />
</p>

	<p>The price consists in a Himitsu-Bako (secret box, <a href="http://en.wikipedia.org/wiki/Himitsu-Bako">http://en.wikipedia.org/wiki/Himitsu-Bako</a>).<br />
<br />
</p>

	<p>Who wins the prize will be decided by consensus in the Keccak team.  We will internally use a system of points. Some hints: &#8211; Fast implementation get more points &#8211; Uncommon devices get more points<br />
<br />
</p>

	<p>We give freedom in the way Keccak is used. It is allowed to implement, for instance, tree hashing or batch hashing (several messages hashed in parallel), instead of plain sequential hashing, to take advantage of parallel computing and get better performance.<br />
<br />
</p>

	<p>The results and source code must be publicly available on an <span class="caps">URL</span> that is sent to |keccak| /-at-/ |noekeon| /-dot-/ |org| <strong>before June 30, 2010</strong> at 12:00 <span class="caps">GMT</span>+2. No specific licensing condition is requested (pick up the one you like!) We reserve the right to extend this deadline in the absence of interesting results. Otherwise, the winner will be announced during the Rump session of the second <span class="caps">SHA</span>-3 candidate conference in Santa Barbara.<br />
</blockquote></p>

	<p>Priset de pratar om &#228;r en s&#229;dan h&#228;r:<br />
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Japanese_Secret_Puzzle_Box.jpg/200px-Japanese_Secret_Puzzle_Box.jpg" alt="Puzzle box" /></p>

	<p>En implementation i Erlang kanske vore n&#229;got (LinusN, Alu)?</p>
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		<item>
		<title>Säkerhetskonferens på Luleå tekniska universitet</title>
		<link>http://www.strombergson.com/kryptoblog/2010/02/01/sakerhetskonferens-pa-lulea-tekniska-universitet/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/02/01/sakerhetskonferens-pa-lulea-tekniska-universitet/#comments</comments>
		<pubDate>Mon, 01 Feb 2010 18:47:37 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Krypto]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[LTU]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1050</guid>
		<description><![CDATA[<p>P&#229; <a href="http://www.ltu.se/">Lule&#229; tekniska universitet</a> (LTU &#8211; f&#246;r &#246;vrigt Sveriges b&#228;sta tekniska universitet) anordnas den 19:e februari <a href="http://www.lusecconference.com/en/home/">s&#228;kerhetskonferensen LuSec 2010</a>. Den utskickade inbjudan beskriver konferensen s&#229; h&#228;r:<blockquote>Har du n&#229;gonsin h&#246;rt talas om &#8220;elliptic curve cryptography&#8221;? Kanske har du</blockquote>&#8230;</p>


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			<content:encoded><![CDATA[	<p>P&#229; <a href="http://www.ltu.se/">Lule&#229; tekniska universitet</a> (LTU &#8211; f&#246;r &#246;vrigt Sveriges b&#228;sta tekniska universitet) anordnas den 19:e februari <a href="http://www.lusecconference.com/en/home/">s&#228;kerhetskonferensen LuSec 2010</a>. Den utskickade inbjudan beskriver konferensen s&#229; h&#228;r:<blockquote>Har du n&#229;gonsin h&#246;rt talas om &#8220;elliptic curve cryptography&#8221;? Kanske har du l&#228;st om en ny forskning inom behaviometri? Vill du veta mer om hur den svenska <span class="caps">DNS</span>-k&#228;rninfrastrukturen fungerar? L&#229;ter det intressant?<br />
<br />
</p>

	<p>Kom d&#229; till C-305 fredagen den 19 februari. Alla &#228;r hj&#228;rtligt v&#228;lkomna!<br />
<br />
</p>

	<p>F&#246;r den som v&#229;gar kan man utmana sig sj&#228;lv i sp&#228;nnande s&#228;kerhetst&#228;vlingar.<br />
<br />
<br />
Evenemanget &#228;r sj&#228;lvklart gratis.<br />
</blockquote></p>

	<p>Hade jag bott i Lule hade jag inte tvekat att ta en tur till konferensen, &#228;ven om den anordnas p&#229; Geos dom&#228;ner.</p>
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		<item>
		<title>Daniel Stenberg rapporterar från OWASP-mötet</title>
		<link>http://www.strombergson.com/kryptoblog/2010/01/25/daniel-stenberg-rapporterar-fran-owasp-motet/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/01/25/daniel-stenberg-rapporterar-fran-owasp-motet/#comments</comments>
		<pubDate>Mon, 25 Jan 2010 09:16:24 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Krypto]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[OWASP Sweden]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1013</guid>
		<description><![CDATA[	<p><a href="http://daniel.haxx.se/">Daniel Stenberg</a> var p&#229; <a href="http://www.strombergson.com/kryptoblog/2010/01/17/owasp-swedens-seminariekvall-om-de-stora-protokollen/"><span class="caps">OWASP </span>Swedens m&#246;te om de stora protokollen </a>och <a href="http://daniel.haxx.se/blog/2010/01/24/the-big-protocols/">har skrivit en bra sammanfattning</a>.</p>
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			<content:encoded><![CDATA[	<p><a href="http://daniel.haxx.se/">Daniel Stenberg</a> var p&#229; <a href="http://www.strombergson.com/kryptoblog/2010/01/17/owasp-swedens-seminariekvall-om-de-stora-protokollen/"><span class="caps">OWASP </span>Swedens m&#246;te om de stora protokollen </a>och <a href="http://daniel.haxx.se/blog/2010/01/24/the-big-protocols/">har skrivit en bra sammanfattning</a>.</p>
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		<item>
		<title>Paneldebatt om molnet och IT-säkerheten</title>
		<link>http://www.strombergson.com/kryptoblog/2010/01/19/paneldebatt-om-molnet-och-it-sakerheten/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/01/19/paneldebatt-om-molnet-och-it-sakerheten/#comments</comments>
		<pubDate>Tue, 19 Jan 2010 20:05:54 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Om Kryptoblog]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[molnet]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1009</guid>
		<description><![CDATA[<p>I morgon onsdag skall jag vara med i <a href="http://www.easyfairs.com/sv/events_216/it-maessor-goeteborg_5640/ict-goeteborg_6246/visitors_6247/seminarieprogram-detaljerat_8608/">en debattpanel p&#229; <span class="caps">ICT</span>-m&#228;ssan i G&#246;teborg om hur molnet p&#229;verkar IT-s&#228;kerheten</a>. I debatten deltar &#228;ven Predrag Mitrovic (CIO, MyNethouse), Per Josefsson (Information Security Manager, Telia Sonera), Johan Broman (Teknisk&#8230;</p>


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			<content:encoded><![CDATA[	<p>I morgon onsdag skall jag vara med i <a href="http://www.easyfairs.com/sv/events_216/it-maessor-goeteborg_5640/ict-goeteborg_6246/visitors_6247/seminarieprogram-detaljerat_8608/">en debattpanel p&#229; <span class="caps">ICT</span>-m&#228;ssan i G&#246;teborg om hur molnet p&#229;verkar IT-s&#228;kerheten</a>. I debatten deltar &#228;ven Predrag Mitrovic (CIO, MyNethouse), Per Josefsson (Information Security Manager, Telia Sonera), Johan Broman (Teknisk expert, Red Hat), Kaja Narum (Nordisk chef, <span class="caps">RSA</span>) och Rosella Carbone (Senior Account Manager, Salesforce).</p>

	<p>Jag har aldrig gjort n&#229;got liknande f&#246;rut och &#228;r just nu lite nerv&#246;s. Men det skall bli sp&#228;nnande och intressant att tr&#228;ffa de andra och h&#246;ra vad de har att s&#228;ga samt vad publiken har f&#246;r fr&#229;gor.</p>
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		<title>OWASP Swedens seminariekväll om de stora protokollen</title>
		<link>http://www.strombergson.com/kryptoblog/2010/01/17/owasp-swedens-seminariekvall-om-de-stora-protokollen/</link>
		<comments>http://www.strombergson.com/kryptoblog/2010/01/17/owasp-swedens-seminariekvall-om-de-stora-protokollen/#comments</comments>
		<pubDate>Sun, 17 Jan 2010 19:17:40 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Tillställningar]]></category>
		<category><![CDATA[OWASP]]></category>
		<category><![CDATA[protokoll.]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=1004</guid>
		<description><![CDATA[<p>Enligt <a href="http://owaspsweden.blogspot.com/2010/01/seminariekvall-211-de-stora-protokollen.html">en postning p&#229; <span class="caps">OWASP </span>Swedens blogg</a> kommer de att anordna en seminariekv&#228;ll 2010-01-21 om de stora protokollen. P&#229; seminariet kommer H&#229;vard Eidnes att prata om <span class="caps">BGP</span>, Rickard Bellgrim kommer att prata om <span class="caps">DNSSEC</span> och&#8230;</p>


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			<content:encoded><![CDATA[	<p>Enligt <a href="http://owaspsweden.blogspot.com/2010/01/seminariekvall-211-de-stora-protokollen.html">en postning p&#229; <span class="caps">OWASP </span>Swedens blogg</a> kommer de att anordna en seminariekv&#228;ll 2010-01-21 om de stora protokollen. P&#229; seminariet kommer H&#229;vard Eidnes att prata om <span class="caps">BGP</span>, Rickard Bellgrim kommer att prata om <span class="caps">DNSSEC</span> och Fredrik Hesse kommer att prata om <span class="caps">SSL</span>/TLS. Naturligtvis blir det dessutom diskussioner, mingel m.m.</p>

	<p><a href="http://www.owasp.org/index.php/Main_Page"><img src="http://logo.cafepress.com/0/1345910.gif" alt="OWASP logo." /></a></p>

	<p>Stiftelsen f&#246;r Internetinfrastruktur (.SE) och f&#246;reningen <span class="caps">SNUS </span>(Swedish Network Users&#8217; Society) st&#229;r som v&#228;rdar. F&#246;r mer information, anm&#228;lan se <a href="http://www.owasp.org/images/7/79/OWASP_Sweden_-_De_stora_protokollen_2010-01-21.pdf">den officiella inbjudan (pdf)</a>.</p>

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		<title>Mer om GSM-attacken</title>
		<link>http://www.strombergson.com/kryptoblog/2009/12/30/mer-om-gsm-attacken/</link>
		<comments>http://www.strombergson.com/kryptoblog/2009/12/30/mer-om-gsm-attacken/#comments</comments>
		<pubDate>Wed, 30 Dec 2009 21:54:54 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Forskning]]></category>
		<category><![CDATA[Hårdvara]]></category>
		<category><![CDATA[Inbyggda system]]></category>
		<category><![CDATA[Krypto]]></category>
		<category><![CDATA[Om Kryptoblog]]></category>
		<category><![CDATA[Tillställningar]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=984</guid>
		<description><![CDATA[<p>Det verkar aldrig ta slut p&#229; uppm&#228;rksamheten kring Karsten Nohls attack p&#229; A5/1 (se tidigare <a href="http://www.strombergson.com/kryptoblog/2009/12/11/regnbagstabeller-for-a51/">bloggpostning ett</a> och <a href="http://www.strombergson.com/kryptoblog/2009/12/29/svd-om-attack-pa-gsm-kryptot/">bloggpostning tv&#229;</a>). I dag har Sveriges Radio och Ekot plockat upp tr&#229;den och j&#246;sses vilket reportage det blev.</p>

	<p><img src="http://www.sr.se/Diverse/AppData/isidor/images/News_images/83/857734_170_100.jpg" alt="Ekots bild till artikeln." />&#8230;</p>


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			<content:encoded><![CDATA[	<p>Det verkar aldrig ta slut p&#229; uppm&#228;rksamheten kring Karsten Nohls attack p&#229; A5/1 (se tidigare <a href="http://www.strombergson.com/kryptoblog/2009/12/11/regnbagstabeller-for-a51/">bloggpostning ett</a> och <a href="http://www.strombergson.com/kryptoblog/2009/12/29/svd-om-attack-pa-gsm-kryptot/">bloggpostning tv&#229;</a>). I dag har Sveriges Radio och Ekot plockat upp tr&#229;den och j&#246;sses vilket reportage det blev.</p>

	<p><img src="http://www.sr.se/Diverse/AppData/isidor/images/News_images/83/857734_170_100.jpg" alt="Ekots bild till artikeln." /></p>

	<p>Egentligen &#228;r <a href="http://www.sr.se/webbradio/?Type=db&#38;Id=2130869">Per Eurenius reportage</a> (webbradio) fr&#229;n 26C3 i Berlin inte s&#229; illa, utan det &#228;r snarare <a href="http://www.sr.se/ekot/artikel.asp?artikel=3342416">p&#229;annonseringen och SRs nyhetstext</a> som &#228;r tokfel:<blockquote><strong>Hemlig gsm-kod hackad av forskare</strong><br />
<br />
</p>

	<p>En tysk forskare har lyckats avsl&#246;ja den kod som ska skydda mobiltrafiken i v&#228;rldens st&#246;rsta telefonsystem, gsm.<br />
</blockquote></p>

	<p>Nej, SR, det &#228;r ingen kod som avsl&#246;jats, och det &#228;r inte hemligt.</p>

	<p>&#196;ven Cryptome har uppdaterat sitt material <em>In support of Karsten Nohl&#8217;s cracking of <span class="caps">GSM A5</span></em> och den h&#228;r sidan hos Cryptome &#228;r nog <a href="http://cryptome.org/0001/gsm-a5-files.htm">den mest kompletta samlingen av information om A5-krypton, s&#228;kerhet (eller avsaknad d&#228;rav) i <span class="caps">GSM</span>, GPRS och <span class="caps">UMTS</span></a>.</p>

	<p>F&#246;r den som vill ha <a href="http://reflextor.com/torrents" class="broken_link">Karstens regnb&#229;gstabeller finns det nu torrentfiler</a>.</p>


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		<title>SvD om attack på GSM-kryptot</title>
		<link>http://www.strombergson.com/kryptoblog/2009/12/29/svd-om-attack-pa-gsm-kryptot/</link>
		<comments>http://www.strombergson.com/kryptoblog/2009/12/29/svd-om-attack-pa-gsm-kryptot/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 21:51:51 +0000</pubDate>
		<dc:creator>Joachim Strömbergson</dc:creator>
				<category><![CDATA[Forskning]]></category>
		<category><![CDATA[Krypto]]></category>
		<category><![CDATA[Tillställningar]]></category>

		<guid isPermaLink="false">http://www.strombergson.com/kryptoblog/?p=973</guid>
		<description><![CDATA[<p>26:e(!) <span class="caps">CCC</span>-konferensen (<a href="http://events.ccc.de/congress/2009/wiki/Welcome">26C3</a>) p&#229;g&#229;r f&#246;r fullt i Berlin med massor av h&#246;gintressanta presentationer. N&#229;gon har uppenbarligen tipsat SvD (eller mer troligt &#228;r det <a href="http://www.nytimes.com/2009/12/29/technology/29hack.html?_r=1&#38;scp=1&#38;sq=Karsten%20Nohl&#38;st=cse">denna <span class="caps">NYT</span>-artikel dom plockat</a>, en artikel med n&#229;got mer inneh&#229;ll) att <a&#8230;</p>


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			<content:encoded><![CDATA[	<p>26:e(!) <span class="caps">CCC</span>-konferensen (<a href="http://events.ccc.de/congress/2009/wiki/Welcome">26C3</a>) p&#229;g&#229;r f&#246;r fullt i Berlin med massor av h&#246;gintressanta presentationer. N&#229;gon har uppenbarligen tipsat SvD (eller mer troligt &#228;r det <a href="http://www.nytimes.com/2009/12/29/technology/29hack.html?_r=1&#38;scp=1&#38;sq=Karsten%20Nohl&#38;st=cse">denna <span class="caps">NYT</span>-artikel dom plockat</a>, en artikel med n&#229;got mer inneh&#229;ll) att <a href="http://www.svd.se/naringsliv/it/gsm-kod-knackt-av-tysk-forskare_4002361.svd">Karsten Nohl presenterat sin regnb&#229;gsattack p&#229; <span class="caps">GSM</span>-kryptot A5/1</a>. (Att Karsten Nohl <a href="http://www.strombergson.com/kryptoblog/2009/12/11/regnbagstabeller-for-a51/">h&#229;ller p&#229; med en regnb&#229;gsattack mot A5/1 har jag tidigare bloggat om h&#228;r p&#229; Kryptoblog</a>.)</p>

	<p>SvDs artikel <em><span class="caps">GSM</span>-kod kn&#228;ckt av tysk forskare</em> inneh&#229;ller inte mycket substans och missar att A5/1 varit kn&#228;ckt sen l&#229;ng tid tillbaka, och att Karsten f&#246;rs&#246;ker folk att inse detta. Vidare h&#228;nvisar man till <span class="caps">GSM</span>-organisationen med s&#228;te i London, vilket borde vara <a href="http://www.gsmworld.com/"><span class="caps">GSM </span>Association</a> (GSMA). En person d&#228;r uttalar sig om att det Karsten presenterat &#228;r olagligt. (Tyv&#228;rr kan det vara sant &#8211; iaf kan Karstens regnb&#229;gstabeller vara olagliga i Tyskland d&#228;r lagen &#167;202c g&#246;r s&#228;kerhetsverktyg olagliga.)</p>

	<p>Tittar man p&#229; A5/1-projektets Trac-sida finns <a href="http://events.ccc.de/congress/2009/Fahrplan/attachments/1479_26C3.Karsten.Nohl.GSM.pdf" class="broken_link">presentationsbilderna fr&#229;n 2gC3</a> och projektnyheter. Bland annat ber&#228;ttade man att:<blockquote></p>
    * The community has computed a large number of rainbow tables (Thank you!)<br />
<br />


    * We found new sources of known plaintext which allows decryption with a smaller subset of the codebook than previously thought<br />
<br />

    * A full <span class="caps">GSM</span> interceptor to collect <span class="caps">GSM</span> data could hypothetically be built from open source components, which we have not doing so may be illegal in some countries<br />
</blockquote>

	<p>JanJ tipsade om att <a href="http://cryptome.org/">Cryptome</a> har <a href="http://cryptome.org/gsm-crack.htm">en sida med l&#228;nkar och info fr&#229;n gamla attacker p&#229; <span class="caps">GSM</span>-krypton</a>.</p>

	<p>Slutligen kan det vara v&#228;rt att n&#228;mna att det verkar som att <a href="http://en.wikipedia.org/wiki/KASUMI_%28block_cipher%29"><span class="caps">KASUMI</span></a> &#8211; blockkryptot som anv&#228;nds i <span class="caps">UMTS</span> och kallas A5/3 kan vara fetkn&#228;ckt. P&#229; <a href="http://asiacrypt2009.cipher.risk.tsukuba.ac.jp/rump/index.html">en <em>rump session</em> vid Asiacrypt 2009</a> presenterade Adi Shamir, Orr Dunkelman och Nathan Keller ett p&#229;g&#229;ende arbete kallat <em>A Practical-Time Attack on the Encryption Algorithm Used in Third Generation Telephony</em>.</p>

	<p>&#196;nnu finns ingen artikel publicerad (vad jag kan hitta, ex p&#229; <a href="http://www.iacr.org/"><span class="caps">IACR</span></a>), men r&#228;kna med att jag &#229;terkommer s&#229; fort jag hittat och l&#228;st den. Det ironiska &#228;r att det Karsten Nohl s&#228;ger sig villa &#229;stadkomma med sin A5/1-attack &#228;r att f&#229; till ett byte fr&#229;n A5/1 till A5/3, men om den algoritmen ocks&#229; &#228;r kn&#228;ckt st&#229;r vi alla med byxorna nere.</p>

	<p>S&#229; vitt jag vet &#228;r kryptofunktioner som A5/1 och A5/3 implementerade som HW-funktioner i terminaler. Vidare finns det ingen f&#246;rhandlingsmekanism i <span class="caps">GSM</span> och <span class="caps">UMTS</span> motsvarande ex <span class="caps">TLS</span> som g&#246;r det enkelt att sp&#228;rra bort och l&#228;gga till nya algoritmer. Tillsammans g&#246;r detta att det nog kommer att dr&#246;ja innan det finns ett bra skydd f&#246;r radiol&#228;nken i <span class="caps">GSM</span> och <span class="caps">UMTS </span>(om Adi &#38; co:s attack st&#228;mmer &#8211; och eftersom det &#228;r dom st&#228;mmer det antagligen.)</p>
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