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<title>Crypto/Cipher/DES/Primitive.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : Crypto.Cipher.DES.Primitive</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- This module is copy of DES module from Crypto package.</span>
<a name="line-9"></a><span class='hs-comment'>-- <a href="http://hackage.haskell.org/package/Crypto">http://hackage.haskell.org/package/Crypto</a></span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-12"></a>
<a name="line-13"></a>
<a name="line-14"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Crypto</span><span class='hs-varop'>.</span><span class='hs-conid'>Cipher</span><span class='hs-varop'>.</span><span class='hs-conid'>DES</span><span class='hs-varop'>.</span><span class='hs-conid'>Primitive</span> <span class='hs-layout'>(</span><span class='hs-varid'>encrypt</span><span class='hs-layout'>,</span> <span class='hs-varid'>decrypt</span><span class='hs-layout'>,</span> <span class='hs-conid'>Block</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span>
<a name="line-18"></a>
<a name="line-19"></a><a name="Block"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Block</span> <span class='hs-conid'>Word64</span>
<a name="line-20"></a>
<a name="line-21"></a><a name="Rotation"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Rotation</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-22"></a><a name="Key"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Key</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word64</span>
<a name="line-23"></a>
<a name="line-24"></a><a name="Bits4"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits4</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-25"></a><a name="Bits6"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-26"></a><a name="Bits32"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits32</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-27"></a><a name="Bits48"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits48</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-28"></a><a name="Bits56"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits56</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-29"></a><a name="Bits64"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bits64</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="desXor"></a><span class='hs-definition'>desXor</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-32"></a><span class='hs-definition'>desXor</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varid'>x</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="desRotate"></a><span class='hs-definition'>desRotate</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-35"></a><span class='hs-definition'>desRotate</span> <span class='hs-varid'>bits</span> <span class='hs-varid'>rot</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drop</span> <span class='hs-varid'>rot'</span> <span class='hs-varid'>bits</span> <span class='hs-varop'>++</span> <span class='hs-varid'>take</span> <span class='hs-varid'>rot'</span> <span class='hs-varid'>bits</span>
<a name="line-36"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>rot'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rot</span> <span class='hs-varop'>`mod`</span> <span class='hs-varid'>length</span> <span class='hs-varid'>bits</span>
<a name="line-37"></a>
<a name="line-38"></a><a name="bitify"></a><span class='hs-definition'>bitify</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits64</span>
<a name="line-39"></a><span class='hs-definition'>bitify</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varop'>.&.</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftL</span> <span class='hs-num'>1</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>63</span><span class='hs-layout'>,</span><span class='hs-num'>62</span><span class='hs-keyglyph'>..</span><span class='hs-num'>0</span><span class='hs-keyglyph'>]</span>
<a name="line-40"></a>
<a name="line-41"></a><a name="unbitify"></a><span class='hs-definition'>unbitify</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word64</span>
<a name="line-42"></a><span class='hs-definition'>unbitify</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-varid'>shiftL</span> <span class='hs-varid'>i</span> <span class='hs-num'>1</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>shiftL</span> <span class='hs-varid'>i</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-varid'>bs</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="initial_permutation"></a><span class='hs-definition'>initial_permutation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits64</span>
<a name="line-45"></a><span class='hs-definition'>initial_permutation</span> <span class='hs-varid'>mb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>mb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-46"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>57</span><span class='hs-layout'>,</span> <span class='hs-num'>49</span><span class='hs-layout'>,</span> <span class='hs-num'>41</span><span class='hs-layout'>,</span> <span class='hs-num'>33</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>17</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>59</span><span class='hs-layout'>,</span> <span class='hs-num'>51</span><span class='hs-layout'>,</span> <span class='hs-num'>43</span><span class='hs-layout'>,</span> <span class='hs-num'>35</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-num'>61</span><span class='hs-layout'>,</span> <span class='hs-num'>53</span><span class='hs-layout'>,</span> <span class='hs-num'>45</span><span class='hs-layout'>,</span> <span class='hs-num'>37</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>21</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>63</span><span class='hs-layout'>,</span> <span class='hs-num'>55</span><span class='hs-layout'>,</span> <span class='hs-num'>47</span><span class='hs-layout'>,</span> <span class='hs-num'>39</span><span class='hs-layout'>,</span> <span class='hs-num'>31</span><span class='hs-layout'>,</span> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-num'>56</span><span class='hs-layout'>,</span> <span class='hs-num'>48</span><span class='hs-layout'>,</span> <span class='hs-num'>40</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>58</span><span class='hs-layout'>,</span> <span class='hs-num'>50</span><span class='hs-layout'>,</span> <span class='hs-num'>42</span><span class='hs-layout'>,</span> <span class='hs-num'>34</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-num'>60</span><span class='hs-layout'>,</span> <span class='hs-num'>52</span><span class='hs-layout'>,</span> <span class='hs-num'>44</span><span class='hs-layout'>,</span> <span class='hs-num'>36</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>62</span><span class='hs-layout'>,</span> <span class='hs-num'>54</span><span class='hs-layout'>,</span> <span class='hs-num'>46</span><span class='hs-layout'>,</span> <span class='hs-num'>38</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-keyglyph'>]</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="key_transformation"></a><span class='hs-definition'>key_transformation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits56</span>
<a name="line-52"></a><span class='hs-definition'>key_transformation</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-53"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>56</span><span class='hs-layout'>,</span> <span class='hs-num'>48</span><span class='hs-layout'>,</span> <span class='hs-num'>40</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>57</span><span class='hs-layout'>,</span> <span class='hs-num'>49</span><span class='hs-layout'>,</span> <span class='hs-num'>41</span><span class='hs-layout'>,</span> <span class='hs-num'>33</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>17</span><span class='hs-layout'>,</span>
<a name="line-54"></a> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>58</span><span class='hs-layout'>,</span> <span class='hs-num'>50</span><span class='hs-layout'>,</span> <span class='hs-num'>42</span><span class='hs-layout'>,</span> <span class='hs-num'>34</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>59</span><span class='hs-layout'>,</span> <span class='hs-num'>51</span><span class='hs-layout'>,</span> <span class='hs-num'>43</span><span class='hs-layout'>,</span> <span class='hs-num'>35</span><span class='hs-layout'>,</span>
<a name="line-55"></a> <span class='hs-num'>62</span><span class='hs-layout'>,</span> <span class='hs-num'>54</span><span class='hs-layout'>,</span> <span class='hs-num'>46</span><span class='hs-layout'>,</span> <span class='hs-num'>38</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>61</span><span class='hs-layout'>,</span> <span class='hs-num'>53</span><span class='hs-layout'>,</span> <span class='hs-num'>45</span><span class='hs-layout'>,</span> <span class='hs-num'>37</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>21</span><span class='hs-layout'>,</span>
<a name="line-56"></a> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>60</span><span class='hs-layout'>,</span> <span class='hs-num'>52</span><span class='hs-layout'>,</span> <span class='hs-num'>44</span><span class='hs-layout'>,</span> <span class='hs-num'>36</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-keyglyph'>]</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="des_enc"></a><span class='hs-definition'>des_enc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Key</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span>
<a name="line-59"></a><span class='hs-definition'>des_enc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>do_des</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-num'>2</span><span class='hs-layout'>,</span><span class='hs-num'>4</span><span class='hs-layout'>,</span><span class='hs-num'>6</span><span class='hs-layout'>,</span><span class='hs-num'>8</span><span class='hs-layout'>,</span><span class='hs-num'>10</span><span class='hs-layout'>,</span><span class='hs-num'>12</span><span class='hs-layout'>,</span><span class='hs-num'>14</span><span class='hs-layout'>,</span><span class='hs-num'>15</span><span class='hs-layout'>,</span><span class='hs-num'>17</span><span class='hs-layout'>,</span><span class='hs-num'>19</span><span class='hs-layout'>,</span><span class='hs-num'>21</span><span class='hs-layout'>,</span><span class='hs-num'>23</span><span class='hs-layout'>,</span><span class='hs-num'>25</span><span class='hs-layout'>,</span><span class='hs-num'>27</span><span class='hs-layout'>,</span><span class='hs-num'>28</span><span class='hs-keyglyph'>]</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="des_dec"></a><span class='hs-definition'>des_dec</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Key</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span>
<a name="line-62"></a><span class='hs-definition'>des_dec</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>do_des</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>28</span><span class='hs-layout'>,</span><span class='hs-num'>27</span><span class='hs-layout'>,</span><span class='hs-num'>25</span><span class='hs-layout'>,</span><span class='hs-num'>23</span><span class='hs-layout'>,</span><span class='hs-num'>21</span><span class='hs-layout'>,</span><span class='hs-num'>19</span><span class='hs-layout'>,</span><span class='hs-num'>17</span><span class='hs-layout'>,</span><span class='hs-num'>15</span><span class='hs-layout'>,</span><span class='hs-num'>14</span><span class='hs-layout'>,</span><span class='hs-num'>12</span><span class='hs-layout'>,</span><span class='hs-num'>10</span><span class='hs-layout'>,</span><span class='hs-num'>8</span><span class='hs-layout'>,</span><span class='hs-num'>6</span><span class='hs-layout'>,</span><span class='hs-num'>4</span><span class='hs-layout'>,</span><span class='hs-num'>2</span><span class='hs-layout'>,</span><span class='hs-num'>1</span><span class='hs-keyglyph'>]</span>
<a name="line-63"></a>
<a name="line-64"></a><a name="do_des"></a><span class='hs-definition'>do_des</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Rotation</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Key</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span>
<a name="line-65"></a><span class='hs-definition'>do_des</span> <span class='hs-varid'>rots</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Block</span> <span class='hs-varop'>$</span> <span class='hs-varid'>des_work</span> <span class='hs-varid'>rots</span> <span class='hs-layout'>(</span><span class='hs-varid'>takeDrop</span> <span class='hs-num'>32</span> <span class='hs-varid'>mb</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span>
<a name="line-66"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>key_transformation</span> <span class='hs-varop'>$</span> <span class='hs-varid'>bitify</span> <span class='hs-varid'>k</span>
<a name="line-67"></a> <span class='hs-varid'>mb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>initial_permutation</span> <span class='hs-varop'>$</span> <span class='hs-varid'>bitify</span> <span class='hs-varid'>m</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="des_work"></a><span class='hs-definition'>des_work</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Rotation</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Bits32</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits32</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits56</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word64</span>
<a name="line-70"></a><span class='hs-definition'>des_work</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-varid'>ml</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unbitify</span> <span class='hs-varop'>$</span> <span class='hs-varid'>final_perm</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>mr</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ml</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-definition'>des_work</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-varid'>mb</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>des_work</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>mb'</span> <span class='hs-varid'>kb</span>
<a name="line-72"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>mb'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>do_round</span> <span class='hs-varid'>r</span> <span class='hs-varid'>mb</span> <span class='hs-varid'>kb</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="do_round"></a><span class='hs-definition'>do_round</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rotation</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Bits32</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits32</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits56</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Bits32</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits32</span><span class='hs-layout'>)</span>
<a name="line-75"></a><span class='hs-definition'>do_round</span> <span class='hs-varid'>r</span> <span class='hs-layout'>(</span><span class='hs-varid'>ml</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>mr</span><span class='hs-layout'>,</span> <span class='hs-varid'>m'</span><span class='hs-layout'>)</span>
<a name="line-76"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>kb'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get_key</span> <span class='hs-varid'>kb</span> <span class='hs-varid'>r</span>
<a name="line-77"></a> <span class='hs-varid'>comp_kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compression_permutation</span> <span class='hs-varid'>kb'</span>
<a name="line-78"></a> <span class='hs-varid'>expa_mr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>expansion_permutation</span> <span class='hs-varid'>mr</span>
<a name="line-79"></a> <span class='hs-varid'>res</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>comp_kb</span> <span class='hs-varop'>`desXor`</span> <span class='hs-varid'>expa_mr</span>
<a name="line-80"></a> <span class='hs-varid'>res'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tail</span> <span class='hs-varop'>$</span> <span class='hs-varid'>iterate</span> <span class='hs-layout'>(</span><span class='hs-varid'>trans</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>res</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-varid'>trans</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>take</span> <span class='hs-varid'>n</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop</span> <span class='hs-varid'>n</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-varid'>res_s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>s_box_1</span><span class='hs-layout'>,</span> <span class='hs-varid'>s_box_2</span><span class='hs-layout'>,</span>
<a name="line-83"></a> <span class='hs-varid'>s_box_3</span><span class='hs-layout'>,</span> <span class='hs-varid'>s_box_4</span><span class='hs-layout'>,</span>
<a name="line-84"></a> <span class='hs-varid'>s_box_5</span><span class='hs-layout'>,</span> <span class='hs-varid'>s_box_6</span><span class='hs-layout'>,</span>
<a name="line-85"></a> <span class='hs-varid'>s_box_7</span><span class='hs-layout'>,</span> <span class='hs-varid'>s_box_8</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>res'</span>
<a name="line-86"></a> <span class='hs-varid'>res_p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p_box</span> <span class='hs-varid'>res_s</span>
<a name="line-87"></a> <span class='hs-varid'>m'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res_p</span> <span class='hs-varop'>`desXor`</span> <span class='hs-varid'>ml</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="get_key"></a><span class='hs-definition'>get_key</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits56</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rotation</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits56</span>
<a name="line-90"></a><span class='hs-definition'>get_key</span> <span class='hs-varid'>kb</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>kb'</span>
<a name="line-91"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>kl</span><span class='hs-layout'>,</span> <span class='hs-varid'>kr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeDrop</span> <span class='hs-num'>28</span> <span class='hs-varid'>kb</span>
<a name="line-92"></a> <span class='hs-varid'>kb'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>desRotate</span> <span class='hs-varid'>kl</span> <span class='hs-varid'>r</span> <span class='hs-varop'>++</span> <span class='hs-varid'>desRotate</span> <span class='hs-varid'>kr</span> <span class='hs-varid'>r</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="compression_permutation"></a><span class='hs-definition'>compression_permutation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits56</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits48</span>
<a name="line-95"></a><span class='hs-definition'>compression_permutation</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-96"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span>
<a name="line-97"></a> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span>
<a name="line-98"></a> <span class='hs-num'>40</span><span class='hs-layout'>,</span> <span class='hs-num'>51</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span> <span class='hs-num'>36</span><span class='hs-layout'>,</span> <span class='hs-num'>46</span><span class='hs-layout'>,</span> <span class='hs-num'>54</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>39</span><span class='hs-layout'>,</span> <span class='hs-num'>50</span><span class='hs-layout'>,</span> <span class='hs-num'>44</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>,</span> <span class='hs-num'>47</span><span class='hs-layout'>,</span>
<a name="line-99"></a> <span class='hs-num'>43</span><span class='hs-layout'>,</span> <span class='hs-num'>48</span><span class='hs-layout'>,</span> <span class='hs-num'>38</span><span class='hs-layout'>,</span> <span class='hs-num'>55</span><span class='hs-layout'>,</span> <span class='hs-num'>33</span><span class='hs-layout'>,</span> <span class='hs-num'>52</span><span class='hs-layout'>,</span> <span class='hs-num'>45</span><span class='hs-layout'>,</span> <span class='hs-num'>41</span><span class='hs-layout'>,</span> <span class='hs-num'>49</span><span class='hs-layout'>,</span> <span class='hs-num'>35</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>31</span><span class='hs-keyglyph'>]</span>
<a name="line-100"></a>
<a name="line-101"></a><a name="expansion_permutation"></a><span class='hs-definition'>expansion_permutation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits48</span>
<a name="line-102"></a><span class='hs-definition'>expansion_permutation</span> <span class='hs-varid'>mb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>mb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-103"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>31</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span>
<a name="line-104"></a> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span>
<a name="line-105"></a> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>17</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>21</span><span class='hs-layout'>,</span> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-layout'>,</span>
<a name="line-106"></a> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span> <span class='hs-num'>31</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-keyglyph'>]</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="s_box"></a><span class='hs-definition'>s_box</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Word8</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-109"></a><span class='hs-definition'>s_box</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to_bool</span> <span class='hs-num'>4</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>row</span><span class='hs-layout'>)</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>col</span>
<a name="line-110"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>row</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipWith</span> <span class='hs-varid'>numericise</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-keyglyph'>]</span>
<a name="line-111"></a> <span class='hs-varid'>col</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipWith</span> <span class='hs-varid'>numericise</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-keyglyph'>]</span>
<a name="line-112"></a> <span class='hs-varid'>numericise</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-113"></a> <span class='hs-varid'>numericise</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-num'>2</span><span class='hs-varop'>^</span><span class='hs-varid'>y</span> <span class='hs-keyword'>else</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-114"></a>
<a name="line-115"></a> <span class='hs-varid'>to_bool</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-116"></a> <span class='hs-varid'>to_bool</span> <span class='hs-num'>0</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-117"></a> <span class='hs-varid'>to_bool</span> <span class='hs-varid'>n</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>to_bool</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftL</span> <span class='hs-varid'>i</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-118"></a><span class='hs-definition'>s_box</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"DES: internal error bits6 more than 6 elements"</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="s_box_1"></a><span class='hs-definition'>s_box_1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-121"></a><span class='hs-definition'>s_box_1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-122"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-123"></a> <span class='hs-keyglyph'>[</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-124"></a> <span class='hs-keyglyph'>[</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-125"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="s_box_2"></a><span class='hs-definition'>s_box_2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-128"></a><span class='hs-definition'>s_box_2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-129"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-130"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-131"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-132"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="s_box_3"></a><span class='hs-definition'>s_box_3</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-135"></a><span class='hs-definition'>s_box_3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-136"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span> <span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-137"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-138"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-139"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-140"></a>
<a name="line-141"></a><a name="s_box_4"></a><span class='hs-definition'>s_box_4</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-142"></a><span class='hs-definition'>s_box_4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-143"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-144"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-145"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-146"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="s_box_5"></a><span class='hs-definition'>s_box_5</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-149"></a><span class='hs-definition'>s_box_5</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-150"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-151"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-152"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-153"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="s_box_6"></a><span class='hs-definition'>s_box_6</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-156"></a><span class='hs-definition'>s_box_6</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-157"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-158"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-159"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-160"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-161"></a>
<a name="line-162"></a><a name="s_box_7"></a><span class='hs-definition'>s_box_7</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-163"></a><span class='hs-definition'>s_box_7</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-164"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-165"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-166"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-167"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-168"></a>
<a name="line-169"></a><a name="s_box_8"></a><span class='hs-definition'>s_box_8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits6</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits4</span>
<a name="line-170"></a><span class='hs-definition'>s_box_8</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_box</span> <span class='hs-varid'>i</span>
<a name="line-171"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-172"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-173"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-174"></a> <span class='hs-keyglyph'>[</span><span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="p_box"></a><span class='hs-definition'>p_box</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits32</span>
<a name="line-177"></a><span class='hs-definition'>p_box</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-178"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>17</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span>
<a name="line-179"></a> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>31</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>21</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-keyglyph'>]</span>
<a name="line-180"></a>
<a name="line-181"></a><a name="final_perm"></a><span class='hs-definition'>final_perm</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bits64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bits64</span>
<a name="line-182"></a><span class='hs-definition'>final_perm</span> <span class='hs-varid'>kb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>kb</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-183"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>39</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>47</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span><span class='hs-layout'>,</span> <span class='hs-num'>55</span><span class='hs-layout'>,</span> <span class='hs-num'>23</span><span class='hs-layout'>,</span> <span class='hs-num'>63</span><span class='hs-layout'>,</span> <span class='hs-num'>31</span><span class='hs-layout'>,</span> <span class='hs-num'>38</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>46</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <span class='hs-num'>54</span><span class='hs-layout'>,</span> <span class='hs-num'>22</span><span class='hs-layout'>,</span> <span class='hs-num'>62</span><span class='hs-layout'>,</span> <span class='hs-num'>30</span><span class='hs-layout'>,</span>
<a name="line-184"></a> <span class='hs-num'>37</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>45</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <span class='hs-num'>53</span><span class='hs-layout'>,</span> <span class='hs-num'>21</span><span class='hs-layout'>,</span> <span class='hs-num'>61</span><span class='hs-layout'>,</span> <span class='hs-num'>29</span><span class='hs-layout'>,</span> <span class='hs-num'>36</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>44</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <span class='hs-num'>52</span><span class='hs-layout'>,</span> <span class='hs-num'>20</span><span class='hs-layout'>,</span> <span class='hs-num'>60</span><span class='hs-layout'>,</span> <span class='hs-num'>28</span><span class='hs-layout'>,</span>
<a name="line-185"></a> <span class='hs-num'>35</span><span class='hs-layout'>,</span> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>43</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>51</span><span class='hs-layout'>,</span> <span class='hs-num'>19</span><span class='hs-layout'>,</span> <span class='hs-num'>59</span><span class='hs-layout'>,</span> <span class='hs-num'>27</span><span class='hs-layout'>,</span> <span class='hs-num'>34</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>42</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>50</span><span class='hs-layout'>,</span> <span class='hs-num'>18</span><span class='hs-layout'>,</span> <span class='hs-num'>58</span><span class='hs-layout'>,</span> <span class='hs-num'>26</span><span class='hs-layout'>,</span>
<a name="line-186"></a> <span class='hs-num'>33</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>41</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>49</span><span class='hs-layout'>,</span> <span class='hs-num'>17</span><span class='hs-layout'>,</span> <span class='hs-num'>57</span><span class='hs-layout'>,</span> <span class='hs-num'>25</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>40</span> <span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>48</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>,</span> <span class='hs-num'>56</span><span class='hs-layout'>,</span> <span class='hs-num'>24</span><span class='hs-keyglyph'>]</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="takeDrop"></a><span class='hs-definition'>takeDrop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-189"></a><span class='hs-definition'>takeDrop</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-190"></a><span class='hs-definition'>takeDrop</span> <span class='hs-num'>0</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-191"></a><span class='hs-definition'>takeDrop</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span>
<a name="line-192"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeDrop</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-193"></a>
<a name="line-194"></a>
<a name="line-195"></a><span class='hs-comment'>-- | Basic DES encryption which takes a key and a block of plaintext</span>
<a name="line-196"></a><span class='hs-comment'>-- and returns the encrypted block of ciphertext according to the standard.</span>
<a name="line-197"></a>
<a name="line-198"></a><a name="encrypt"></a><span class='hs-definition'>encrypt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span>
<a name="line-199"></a><span class='hs-definition'>encrypt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>des_enc</span>
<a name="line-200"></a>
<a name="line-201"></a><span class='hs-comment'>-- | Basic DES decryption which takes a key and a block of ciphertext and</span>
<a name="line-202"></a><span class='hs-comment'>-- returns the decrypted block of plaintext according to the standard.</span>
<a name="line-203"></a>
<a name="line-204"></a><a name="decrypt"></a><span class='hs-definition'>decrypt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word64</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Block</span>
<a name="line-205"></a><span class='hs-definition'>decrypt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>des_dec</span>
</pre></body>
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