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	<title>
	Comments on: Appyhay Anniversaryway Yptographycray	</title>
	<atom:link href="https://gregladen.com/blog/2009/09/24/appyhay-anniversaryway-yptogra/feed/" rel="self" type="application/rss+xml" />
	<link>https://gregladen.com/blog/2009/09/24/appyhay-anniversaryway-yptogra/</link>
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	<lastBuildDate>Thu, 24 Sep 2009 22:16:01 +0000</lastBuildDate>
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		<title>
		By: MadScientist		</title>
		<link>https://gregladen.com/blog/2009/09/24/appyhay-anniversaryway-yptogra/#comment-546469</link>

		<dc:creator><![CDATA[MadScientist]]></dc:creator>
		<pubDate>Thu, 24 Sep 2009 22:16:01 +0000</pubDate>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2009/09/24/appyhay-anniversaryway-yptogra/#comment-546469</guid>

					<description><![CDATA[Yeah, I was confused by the 60 years as well; aside from the well-known Roman substitution ciphers which are trivial to break, a tougher-to-break cipher was in common use in France and England around the time of Elizabeth 1 (now trivial to break with a computer).  I&#039;m not sure about calling Enigma a computer though, unless you class the abacus as a computer; then again the computers which help read Enigma messages are older than 60 years (and Enigma even older); otherwise they would have had no value whatsoever during the war.
]]></description>
			<content:encoded><![CDATA[<p>Yeah, I was confused by the 60 years as well; aside from the well-known Roman substitution ciphers which are trivial to break, a tougher-to-break cipher was in common use in France and England around the time of Elizabeth 1 (now trivial to break with a computer).  I&#8217;m not sure about calling Enigma a computer though, unless you class the abacus as a computer; then again the computers which help read Enigma messages are older than 60 years (and Enigma even older); otherwise they would have had no value whatsoever during the war.</p>
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		<title>
		By: Dan J		</title>
		<link>https://gregladen.com/blog/2009/09/24/appyhay-anniversaryway-yptogra/#comment-546468</link>

		<dc:creator><![CDATA[Dan J]]></dc:creator>
		<pubDate>Thu, 24 Sep 2009 21:17:30 +0000</pubDate>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2009/09/24/appyhay-anniversaryway-yptogra/#comment-546468</guid>

					<description><![CDATA[60 years?!!?!? I was very confused (can you say &lt;em&gt;Caesar cipher&lt;/em&gt;) until I saw on the slideshow page (emphasis mine):

&lt;blockquote&gt;2009 marks 60 years of &lt;strong&gt;computer&lt;/strong&gt; cryptography&amp;hellip&#039;&lt;/blockquote&gt;

Now the 60 year thing makes more sense.]]></description>
			<content:encoded><![CDATA[<p>60 years?!!?!? I was very confused (can you say <em>Caesar cipher</em>) until I saw on the slideshow page (emphasis mine):</p>
<blockquote><p>2009 marks 60 years of <strong>computer</strong> cryptography&#038;hellip&#8217;</p></blockquote>
<p>Now the 60 year thing makes more sense.</p>
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