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    <title>Re: 加密解密 - Code666 (代码贴、代码片段)</title>
    <description>Re: 加密解密 - Code666 (代码贴、代码片段)</description>
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    <title>Re: Re: 加密解密</title>
    <link>http://www.code666.cn/view/f85d7eba</link>
    <pubDate>Tue, 10 May 2022 14:57:05 +0800</pubDate>
    <dc:creator>YW</dc:creator>
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    <description><![CDATA[维吉尼亚密码加密解密教程 假设我们要加密一段字母： huan ying ni 。 秘钥是hello 1，首先制作字母表 写一排字母(大小写通用），下一行写上对应的数字 从0到25 a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22&#8230;]]></description>
    <content:encoded><![CDATA[<div class="text" style="font-family:monospace;"><ol><li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">维吉尼亚密码加密解密教程</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">假设我们要加密一段字母： &nbsp; huan &nbsp;ying &nbsp;ni 。 &nbsp; 秘钥是hello</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">1，首先制作字母表</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">写一排字母(大小写通用），下一行写上对应的数字 &nbsp;从0到25</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">a &nbsp;b &nbsp;c &nbsp;d &nbsp;e &nbsp;f &nbsp;g &nbsp;h &nbsp;i &nbsp;j &nbsp;k &nbsp; l &nbsp; m &nbsp; n &nbsp; o &nbsp; p &nbsp; q &nbsp; r &nbsp; s &nbsp; t &nbsp; u &nbsp; v &nbsp; w &nbsp; x &nbsp; y &nbsp; z</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">0 &nbsp;1 &nbsp;2 &nbsp;3 &nbsp;4 &nbsp;5 &nbsp;6 &nbsp;7 &nbsp;8 &nbsp;9 &nbsp;10 &nbsp;11 &nbsp;12 &nbsp;13 &nbsp;14 &nbsp;15 &nbsp;16 &nbsp;17 &nbsp;18 &nbsp;19 &nbsp;20 &nbsp;21 &nbsp;22 &nbsp;23 &nbsp;24 &nbsp;25</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">2，将待加密的明文huan ying &nbsp;ni转换成数字</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">如 &nbsp;huan ying ni 。 转换之后是</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">h &nbsp;u &nbsp; a &nbsp;n &nbsp; &nbsp; &nbsp;y &nbsp; i &nbsp; n &nbsp; g &nbsp; &nbsp; &nbsp; n &nbsp; i</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7 &nbsp;20 &nbsp;0 &nbsp;13 &nbsp; &nbsp; 24 &nbsp;8 &nbsp; 13 &nbsp;6 &nbsp; &nbsp; &nbsp; 13 &nbsp;8</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">3,将秘钥hello转换成数字并循环显示，重复位数和明文位数一样，如明文为10位，则密文也是10位</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">h &nbsp; e &nbsp; l &nbsp; l &nbsp; o &nbsp; h &nbsp; e &nbsp; l &nbsp; l &nbsp; o</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7 &nbsp; 4 &nbsp; 11 &nbsp;11 &nbsp;14 &nbsp;7 &nbsp; 4 &nbsp; 11 &nbsp;11 &nbsp;14</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">4, 将明文和秘钥按位数相加,注意空格要留空，标点符号不需要转换，直接写在密文相应位置</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">14 &nbsp;24 &nbsp;11 &nbsp;24 &nbsp; &nbsp; &nbsp;38 &nbsp;15 &nbsp;17 &nbsp;17 &nbsp; &nbsp; &nbsp; 24 &nbsp;22</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">5，多于25的数字减去25</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">14 &nbsp; 24 &nbsp; 11 &nbsp; 24 &nbsp; &nbsp;13 &nbsp; 15 &nbsp; 17 &nbsp; 17 &nbsp; 24 &nbsp; 22</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">6，参照密码表，转换成字母密文为</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">o &nbsp; y &nbsp; l &nbsp; y &nbsp; &nbsp; n &nbsp; p &nbsp; &nbsp;r &nbsp; &nbsp;r &nbsp; &nbsp;y &nbsp; &nbsp;w</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7,因此huan &nbsp;ying &nbsp;ni 。的密文是</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">oylz nprr yw。 &nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">秘钥为hello</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">---------------------------------------------------------</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">解密过程</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">1，将密文 &nbsp;oylz nprr yw。 &nbsp;转换成数字</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">14 &nbsp; &nbsp;24 &nbsp; &nbsp; &nbsp;11 &nbsp; &nbsp;24 &nbsp; &nbsp; 13 &nbsp; &nbsp; 15 &nbsp; &nbsp; 17 &nbsp; &nbsp; &nbsp; &nbsp;17 &nbsp; &nbsp; &nbsp;25 &nbsp; &nbsp; &nbsp;22</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">2， 将秘钥hello转换为数字，循环重复，和明文一致</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">h &nbsp; e &nbsp; l &nbsp; l &nbsp; o &nbsp; h &nbsp; e &nbsp; l &nbsp; l &nbsp; o</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7 &nbsp; 4 &nbsp; 11 &nbsp;11 &nbsp;14 &nbsp;7 &nbsp; 4 &nbsp; 11 &nbsp;11 &nbsp;14</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">3，密文减去秘钥</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7 &nbsp; &nbsp; &nbsp;20 &nbsp; &nbsp; 0 &nbsp; &nbsp;13 &nbsp; &nbsp; &nbsp;-1 &nbsp; &nbsp; &nbsp; &nbsp;8 &nbsp; &nbsp; &nbsp;13 &nbsp; &nbsp; &nbsp;6 &nbsp; &nbsp; 14 &nbsp; &nbsp; 8</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">4，如果出现负数就加上25</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">7 &nbsp;20 &nbsp;0 &nbsp;13 &nbsp; &nbsp; 24 &nbsp;8 &nbsp; 13 &nbsp;6 &nbsp; &nbsp; &nbsp; 13 &nbsp;8</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">5，转换成明文字母</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">h &nbsp;u &nbsp; a &nbsp;n &nbsp; &nbsp; &nbsp;y &nbsp; i &nbsp; n &nbsp; g &nbsp; &nbsp; &nbsp; n &nbsp; i</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">6，整理得到</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">huan ying ni</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">秘钥：hello</div></li>
<li style="font-weight: normal; vertical-align:top;"><div style="font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;">&nbsp;</div></li>
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