slide0106.htm

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 lang=EN-US style='font-family:"Arial Unicode MS";mso-ascii-font-family:Wingdings;
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>→</b></span><span lang=EN-US style='font-family:Wingdings;
 mso-ascii-font-family:Wingdings;mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b> </b></span><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>&quot;G&quot;…</b></span><span lang=EN-US style='font-family:"Arial Unicode MS";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN;
 display:none'><b>&#13;</b></span></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:40.75%;left:10.11%;width:85.01%;height:5.25%'><nobr><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b><span style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span></b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>当加序数后的字母超过</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>&quot;Z&quot;</b></span><span style='font-family:宋体;mso-fareast-font-family:
 宋体;color:#333333'><b>或</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>&quot;z&quot;</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>则</b></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333'><b> c=Chr(Asc(c)+k
 -26)</b></span><span lang=EN-US style='font-family:"Arial Unicode MS";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN;
 display:none'><b>&#13;</b></span></nobr></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:46.5%;left:10.11%;width:52.99%;height:5.25%'><nobr><span style='font-family:
 宋体;mso-fareast-font-family:宋体;color:#333333'><b>例如：</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>You<span style='mso-spacerun:yes'>&nbsp; </span>are<span
 style='mso-spacerun:yes'>&nbsp; </span>good</b></span><span lang=EN-US
 style='font-family:"Arial Unicode MS";mso-ascii-font-family:Wingdings;
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>→</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b> Dtz<span
 style='mso-spacerun:yes'>&nbsp;&nbsp; </span>fwj<span
 style='mso-spacerun:yes'>&nbsp; </span>ltti</b></span><span lang=EN-US
 style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
 mso-fareast-language:ZH-CN;display:none'><b>&#13;</b></span></nobr></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:0%;left:0%;width:.18%;height:.25%'><nobr><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b><span style='mso-spacerun:yes'>&nbsp; </span></b></span><span
 lang=EN-US style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
 mso-fareast-language:ZH-CN;display:none'><b>&#13;</b></span></nobr></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:58.75%;left:10.11%;width:47.0%;height:4.75%'><nobr><span style='font-family:
 宋体;mso-fareast-font-family:宋体;color:red'><b>解密算法：</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:black'><b>解密为加密的逆过程</b></span><span
 style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
 color:black;display:none'><b>&#13;</b></span></nobr></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:64.0%;left:10.11%;width:85.2%;height:5.25%'><nobr><span style='color:#333333'><b><span
 style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>将每个字母</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>C</b></span><span style='font-family:宋体;mso-fareast-font-family:
 宋体;color:#333333'><b>减（或加）一序数</b></span><span lang=EN-US style='font-family:
 "Times New Roman";mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:
 "Arial Unicode MS";color:#333333;mso-fareast-language:ZH-CN'><b>K</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>，即</b></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333'><b> c=chr(Asc(c)-k),</b></span><span
 lang=EN-US style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
 mso-fareast-language:ZH-CN;display:none'><b>&#13;</b></span></nobr></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:70.0%;left:10.11%;width:87.26%;height:10.5%'><span style='font-family:
 宋体;mso-fareast-font-family:宋体;color:#333333'><b>例如：序数</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>k</b></span><span style='font-family:宋体;mso-fareast-font-family:
 宋体;color:#333333'><b>为</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>5</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>，这时</b></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333'><b> &quot;Z&quot;</b></span><span
 lang=EN-US style='font-family:"Arial Unicode MS";mso-ascii-font-family:Wingdings;
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>→</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>&quot;U&quot;</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>，</b></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333'><b> &quot;z&quot;</b></span><span
 lang=EN-US style='font-family:"Arial Unicode MS";mso-ascii-font-family:Wingdings;
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>→</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>&quot;u&quot;</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>，</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>&quot;Y&quot;</b></span><span lang=EN-US style='font-family:"Arial Unicode MS";
 mso-ascii-font-family:Wingdings;mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>→</b></span><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>&quot;T&quot;…</b></span><span lang=EN-US style='font-family:"Arial Unicode MS";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN;
 display:none'><b>&#13;</b></span></div>
 <div style='text-align:justify;mso-line-spacing:"100 10 0";position:absolute;
 top:81.0%;left:10.11%;width:82.02%;height:5.25%'><nobr><span style='font-family:
 宋体;mso-fareast-font-family:宋体;color:#333333'><b>当加序数后的字母小于</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333;mso-fareast-language:
 ZH-CN'><b>&quot;A&quot;</b></span><span style='font-family:宋体;mso-fareast-font-family:
 宋体;color:#333333'><b>或</b></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
 color:#333333;mso-fareast-language:ZH-CN'><b>&quot;a&quot;</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体;color:#333333'><b>则</b></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";color:#333333'><b> c=Chr(Asc(c)-k
 +26)</b></span><span lang=EN-US style='font-family:"Arial Unicode MS";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN;
 display:none'><b>&#13;</b></span></nobr></div>
 <div style='mso-line-spacing:"100 10 0";position:absolute;top:87.5%;
 left:10.11%;width:87.26%;height:4.75%'><span style='font-family:宋体;mso-fareast-font-family:
 宋体;mso-special-format:lastCR;display:none'><b>&#13;</b></span></div>
 </div>
</p:slide></div>

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