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Kenneth Reitz
209 lines
5.9 KiB
HTML
209 lines
5.9 KiB
HTML
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<header> <h1 class="entry-title"><a href="the-fbi-releases-code-challenge-to-hackers.html"
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rel="bookmark" title="Permalink to The FBI Releases Code Challenge to Hackers">The FBI Releases Code Challenge to Hackers</a></h1> </header>
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<abbr class="published" title="2008-11-11T06:13:00">
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Tue 11 November 2008
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</abbr>
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<p>In <a href="./category/Code.html">Code</a>.
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</footer><!-- /.post-info -->
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<p>The Federal Bureau of Investigation, that's right, the FBI, has
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just released a
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<a class="reference external" href="%20http://www.networkworld.com/community/node/36704">Code Challenge</a>
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for hackers around the world! Here are the details:</p>
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<blockquote>
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A relatively basic form of substitution cipher is the Caesar
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Cipher, named for its Roman origins. The Caesar Cipher involves
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writing two alphabets, one above the other. The lower alphabet is
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shifted by one or more characters to the right or left and is used
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as the cipher text to represent the plain text letter in the
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alphabet above it.</blockquote>
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<p>Plain Text</p>
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<blockquote>
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z</blockquote>
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<p>Cipher Text</p>
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<blockquote>
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B C D E F G H I J K L M N O P Q R S T U V W X Y Z A</blockquote>
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<p>In this example, the plain text K is enciphered with the cipher
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text L. The phrase 'Lucky Dog' would be enciphered as follows:</p>
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<p>Plain Text: L U C K Y D O G</p>
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<p>Cipher Text: M V D L Z E P H</p>
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<p>Ciphers can be made more secure by using a keyword to scramble one
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of the alphabets. Keywords can be placed in the plain text, the
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cipher text, or both, and any word can be used as a key if repeated
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letters are dropped. Here the word SECRETLY (minus the second E) is
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used as the plain text keyword.</p>
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<p>Plain Text</p>
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<p>S E C R T L Y A B D F G H I J K M N O P Q U V W X Z</p>
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<p>Cipher Text</p>
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<p>A B C D E F G H I J K L M N O P Q R S T U V W X Y Z</p>
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<p>The FBI of course doesn't always invite folks to break code on its
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site. In fact last spring a consultant managed to access the
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bureau's National Crime Information Center database.</p>
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<p>Is this a ploy to get the hacker community back to its roots? Most
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certainly we seem to loose touch to what this is all about. Or
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perhaps just an elaborate way to recruit future employees due to
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the inability to advertise for positions?</p>
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<p>What do you think?</p>
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