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<div class="tit"><a href="/sgb44" class="titlink" title="sgb44的空间 http://hi.baidu.com/sgb44">天涯海角</a></div>
<div class="desc">人就在天涯，天涯怎么会远。</div>
<div id="tabline"> </div> <div id="tab"><a href="/sgb44">主页</a><a href="/sgb44/blog" class="on">博客</a><a href="/sgb44/album">相册</a><span>|</span><a href="/sgb44/profile">个人档案</a> <span>|</span><a href="/sgb44/friend">好友</a> </div></div><div class="stage"><div class="stagepad"><div style="width:100%"> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="modth"> <tr><td class="modtl" width="7"> </td> <td class="modtc" nowrap><div class="modhead"><span class="modtit">查看文章</span></div></td> <td class="modtc" nowrap align="right"></td> <td class="modtr" width="7"> </td> </tr></table><div id="m_blog" class="modbox"><div class="tit">DES实现 C源代码</div><div class="date">2007年10月09日 17:35</div><table style="table-layout:fixed"><tr><td><div id="blog_text" class="cnt"><p>#include <stdlib.h><br>#include <stdio.h></p><p>#define ENCRYPT 1<br>#define DECRYPT 0</p><p>typedef char bool;</p><p>// 16 sub keys<br>static bool SubKey[16][48];</p><p>// Permuted Choice 1 (PC-1)<br>const static char PC1_Table[56] =<br>{<br> 57, 49, 41, 33, 25, 17, 9,<br> 1, 58, 50, 42, 34, 26, 18,<br> 10, 2, 59, 51, 43, 35, 27,<br> 19, 11, 3, 60, 52, 44, 36,<br> 63, 55, 47, 39, 31, 23, 15,<br> 7, 62, 54, 46, 38, 30, 22,<br> 14, 6, 61, 53, 45, 37, 29, <br> 21, 13, 5, 28, 20, 12, 4<br>};</p><p>// Left Shifts<br>const static char LOOP_Table[16] =<br>{<br> 1, 1, 2, 2, 2, 2, 2, 2,<br> 1, 2, 2, 2, 2, 2, 2, 1<br>};</p>⌨️ 快捷键说明
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