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	<title>Rosio Pavoris &#187; Cryptography</title>
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	<link>http://cairnarvon.rotahall.org</link>
	<description>Unscientific and ultimately destructive.</description>
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		<title>Cisco sucks at crypto</title>
		<link>http://cairnarvon.rotahall.org/2009/12/01/cisco-sucks-at-crypto/</link>
		<comments>http://cairnarvon.rotahall.org/2009/12/01/cisco-sucks-at-crypto/#comments</comments>
		<pubDate>Tue, 01 Dec 2009 00:26:07 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1606</guid>
		<description><![CDATA[I&#8217;m in a class called Netwerkbeheer (Network Management), which spans two semesters and is a transparent excuse to peddle CCNA certifications. As a result, I spend a lot of time playing with Cisco routers and switches, and one of the many, many things that annoy me about Cisco&#8217;s IOS is their cavalier attitude towards security [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2009/12/01/cisco-sucks-at-crypto/feed/</wfw:commentRss>
		<slash:comments>10</slash:comments>
		</item>
		<item>
		<title>Literate Tripcrackers</title>
		<link>http://cairnarvon.rotahall.org/2009/04/07/literate-tripcrackers/</link>
		<comments>http://cairnarvon.rotahall.org/2009/04/07/literate-tripcrackers/#comments</comments>
		<pubDate>Tue, 07 Apr 2009 15:39:19 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1352</guid>
		<description><![CDATA[There&#8217;s been some interest in tripcode crackers lately, so I thought I&#8217;d write on in Haskell. I mentioned this before, but I&#8217;ve improved it a bit since. I&#8217;ll be discussing the code step by step in this post. By the end, we should have a working application that takes a POSIX regex as an argument, [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2009/04/07/literate-tripcrackers/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Encryptore</title>
		<link>http://cairnarvon.rotahall.org/2008/10/04/encryptore/</link>
		<comments>http://cairnarvon.rotahall.org/2008/10/04/encryptore/#comments</comments>
		<pubDate>Sat, 04 Oct 2008 22:03:09 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1171</guid>
		<description><![CDATA[A classical cryptography library isn&#8217;t much of a toy to non-programmers, so in an effort to learn about Python&#8217;s Tkinter library, I wrote a quick-and-dirty GUI front-end to it: I know it&#8217;s ugly, but that&#8217;s because it&#8217;s Tk. I think it&#8217;s meant to be ugly. Tell the Python dudes to use GTK+ bindings for Python&#8217;s [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>In which I write a Python module</title>
		<link>http://cairnarvon.rotahall.org/2008/09/11/in-which-i-write-a-python-module/</link>
		<comments>http://cairnarvon.rotahall.org/2008/09/11/in-which-i-write-a-python-module/#comments</comments>
		<pubDate>Thu, 11 Sep 2008 23:17:38 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1140</guid>
		<description><![CDATA[Specifically, a small classical cryptography library. None of these things are very hard to implement (in fact, two of the hardest bits I haven&#8217;t even implemented myself), but it&#8217;s good practice for me and some people might hypothetically have a use for it. I&#8217;ve taken a stab at documenting it, but I don&#8217;t know how [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2008/09/11/in-which-i-write-a-python-module/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Forced indentation of Vigenère</title>
		<link>http://cairnarvon.rotahall.org/2008/09/02/forced-indentation-of-vigenere/</link>
		<comments>http://cairnarvon.rotahall.org/2008/09/02/forced-indentation-of-vigenere/#comments</comments>
		<pubDate>Tue, 02 Sep 2008 17:34:52 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1109</guid>
		<description><![CDATA[The Vigenère cipher is a more interesting cipher, in that it uses an actual key, and isn&#8217;t trivial to bruteforce. Central to the Vigenère cipher (and, in fact, most classical substitution ciphers) is the tabula recta: Suppose that you have a message to encrypt starting with &#8220;Proletarians of Europe! The war has lasted more than [...]]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Forced indentation of cryptanalysis</title>
		<link>http://cairnarvon.rotahall.org/2008/08/31/forced-indentation-of-cryptanalysis/</link>
		<comments>http://cairnarvon.rotahall.org/2008/08/31/forced-indentation-of-cryptanalysis/#comments</comments>
		<pubDate>Sun, 31 Aug 2008 22:12:06 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Programming]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=1102</guid>
		<description><![CDATA[Alright, so it&#8217;s about programming again. I&#8217;ve been meaning to write some tools to help me encrypt text using some classical ciphers, and also to break those ciphers. I&#8217;ve also been meaning to using Python more, because holy fuck Python is awesome. Maybe it&#8217;s just the fact that I only really have any experience with [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Tor is surprisingly easy to set up</title>
		<link>http://cairnarvon.rotahall.org/2008/04/03/tor-is-surprisingly-easy-to-set-up/</link>
		<comments>http://cairnarvon.rotahall.org/2008/04/03/tor-is-surprisingly-easy-to-set-up/#comments</comments>
		<pubDate>Thu, 03 Apr 2008 06:31:22 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>
		<category><![CDATA[Miscellany]]></category>
		<category><![CDATA[Personal]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/?p=982</guid>
		<description><![CDATA[In case you&#8217;re one of the three remaining peope who doesn&#8217;t know what Tor is, it&#8217;s basically an anonymising proxy on steroids. Any request you make over a network (say, to retrieve a web page to display in your browser) is sent to a random node in the network, which then passes it on to [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2008/04/03/tor-is-surprisingly-easy-to-set-up/feed/</wfw:commentRss>
		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>Everyone&#8217;s linking to this</title>
		<link>http://cairnarvon.rotahall.org/2008/02/22/everyones-linking-to-this/</link>
		<comments>http://cairnarvon.rotahall.org/2008/02/22/everyones-linking-to-this/#comments</comments>
		<pubDate>Fri, 22 Feb 2008 00:02:51 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/2008/02/22/everyones-linking-to-this/</guid>
		<description><![CDATA[So I probably should too. This video describes a simple but effective attack again whole disk encryption and similar cryptosystems, based on the fact that, contrary to popular belief, modern DRAM retains its data for some time after power is cut, and the encryption key is stored in said DRAM. There&#8217;s some more information in [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2008/02/22/everyones-linking-to-this/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>TrueCrypt 5.0!</title>
		<link>http://cairnarvon.rotahall.org/2008/02/06/truecrypt-50/</link>
		<comments>http://cairnarvon.rotahall.org/2008/02/06/truecrypt-50/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 18:51:32 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/2008/02/06/truecrypt-50/</guid>
		<description><![CDATA[As you may or may not have heard, a new version of TrueCrypt was released yesterday. As you may remember, it&#8217;s a cross-platform encryption type program, which has the ability to (among other things) create hidden containers, which is a simple but effective steganography. Last time I mentioned TrueCrypt, I lamented the absense of full [...]]]></description>
		<wfw:commentRss>http://cairnarvon.rotahall.org/2008/02/06/truecrypt-50/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>Block Cipher Modes of Operation</title>
		<link>http://cairnarvon.rotahall.org/2008/01/25/block-cipher-modes-of-operation/</link>
		<comments>http://cairnarvon.rotahall.org/2008/01/25/block-cipher-modes-of-operation/#comments</comments>
		<pubDate>Fri, 25 Jan 2008 04:34:11 +0000</pubDate>
		<dc:creator>Cairnarvon</dc:creator>
				<category><![CDATA[Cryptography]]></category>

		<guid isPermaLink="false">http://cairnarvon.rotahall.org/2008/01/25/block-cipher-modes-of-operation/</guid>
		<description><![CDATA[The point of these posts on cryptography is mainly to demonstrate that while cryptography may seem like a very arcane field that&#8217;s next to impossible for the layperson to get into, it&#8217;s actually reasonably straightforward. Still, there are some pitfalls one should watch out for. A famous one of these involves block ciphers. Suppose you [...]]]></description>
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		<slash:comments>2</slash:comments>
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