PHP 暗号化および復号化処理クラス -- 参考: Discuz フォーラムのパスポート_PHP チュートリアル

<p></p> <p><code class="php plain"><?php </code></p> <table> <tbody> <tr> <td class="number"><code>02</code></td> <td class="content"><code class="php comments">/*=========================================================== </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>03</code></td> <td class="content"><code class="php comments">= 版权协议： </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>04</code></td> <td class="content"><code class="php comments">= GPL (The GNU GENERAL PUBLIC LICENSE Version 2, June 1991) </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>05</code></td> <td class="content"><code class="php comments">=------------------------------------------------------------ </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>06</code></td> <td class="content"><code class="php comments">= 文件名称：cls.sys_crypt.php </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>07</code></td> <td class="content"><code class="php comments">= 摘 要：php加密解密处理类 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>08</code></td> <td class="content"><code class="php comments">= 版 本：1.0 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>09</code></td> <td class="content"><code class="php comments">= 参 考：Discuz论坛的passport相关函数 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>10</code></td> <td class="content"><code class="php comments">=------------------------------------------------------------ </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>11</code></td> <td class="content"><code class="php comments">= Script Written By PHPWMS项目组 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>12</code></td> <td class="content"><code class="php comments">= 最后更新：xinge </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>13</code></td> <td class="content"><code class="php comments">= 最后日期：2007-12-09 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>14</code></td> <td class="content"><code class="php comments">============================================================*/</code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>15</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>16</code></td> <td class="content"><code class="php keyword">class</code> <code class="php plain">SysCrypt { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>17</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>18</code></td> <td class="content"><code class="php keyword">private</code> <code class="php variable">$crypt_key</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>19</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>20</code></td> <td class="content"><code class="php comments">// 构造函数 </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>21</code></td> <td class="content"><code class="php keyword">public</code> <code class="php keyword">function</code> <code class="php plain">__construct(</code><code class="php variable">$crypt_key</code><code class="php plain">) { </code></td> </tr> </tbody> </table><table> <tbody> <tr> <td class="number"><code>22</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$this</code> <code class="php plain">-> crypt_key = </code><code class="php variable">$crypt_key</code><code class="php plain">; </code> </p> <table> <tbody> <tr> <td class="number"><code>23</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>24</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>25</code></td> <td class="content"> <code class="php keyword">public</code> <code class="php keyword">function</code> <code class="php plain">php_encrypt(</code><code class="php variable">$txt</code><code class="php plain">) { </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>26</code></td> <td class="content"> <code class="spaces">   </code><code class="php plain">srand((double)microtime() * 1000000); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>27</code></td> <td class="content"> <code class="spaces">   </code><code class="php variable">$encrypt_key</code> <code class="php plain">= md5(rand(0,32000)); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>28</code></td> <td class="content"> <code class="spaces">   </code><code class="php variable">$ctr</code> <code class="php plain">= 0; </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>29</code></td> <td class="content"> <code class="spaces">   </code><code class="php variable">$tmp</code> <code class="php plain">= </code><code class="php string">''</code><code class="php plain">; </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>30</code></td> <td class="content"> <code class="spaces">   </code><code class="php keyword">for</code><code class="php plain">(</code><code class="php variable">$i</code> <code class="php plain">= 0;</code><code class="php variable">$i</code><code class="php plain"><</code><code class="php functions">strlen</code><code class="php plain">(</code><code class="php variable">$txt</code><code class="php plain">);</code><code class="php variable">$i</code><code class="php plain">++) { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>31</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$ctr</code> <code class="php plain">= </code><code class="php variable">$ctr</code> <code class="php plain">== </code><code class="php functions">strlen</code><code class="php plain">(</code><code class="php variable">$encrypt_key</code><code class="php plain">) ? 0 : </code><code class="php variable">$ctr</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>32</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$tmp</code> <code class="php plain">.= </code><code class="php variable">$encrypt_key</code><code class="php plain">[</code><code class="php variable">$ctr</code><code class="php plain">].(</code><code class="php variable">$txt</code><code class="php plain">[</code><code class="php variable">$i</code><code class="php plain">]^</code><code class="php variable">$encrypt_key</code><code class="php plain">[</code><code class="php variable">$ctr</code><code class="php plain">++]); </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>33</code></td> <td class="content"><code class="spaces"> </code><code class="spaces"> </code><code class="php plain">} </code></td> </tr> </tbody> </table><table> <tbody> <tr> <td class="number"><code>34</code></td> <td class="content"><code class="spaces"> </code><code class="php keyword">return</code> <code class="php functions">base64_encode</code><code class="php plain">(self::__key(</code><code class="php variable">$tmp</code><code class="php plain">,</code><code class="php variable">$this</code> <code class="php plain">-> crypt_key)); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>35</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>36</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>37</code></td> <td class="content"> <code class="php keyword">public</code> <code class="php keyword">function</code> <code class="php plain">php_decrypt(</code><code class="php variable">$txt</code><code class="php plain">) { </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>38</code></td> <td class="content"> <code class="spaces">   </code><code class="php variable">$txt</code> <code class="php plain">= self::__key(</code><code class="php functions">base64_decode</code><code class="php plain">(</code><code class="php variable">$txt</code><code class="php plain">),</code><code class="php variable">$this</code> <code class="php plain">-> crypt_key); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>39</code></td> <td class="content"> <code class="spaces">   </code><code class="php variable">$tmp</code> <code class="php plain">= </code><code class="php string">''</code><code class="php plain">; </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>40</code></td> <td class="content"> <code class="spaces">   </code><code class="php keyword">for</code><code class="php plain">(</code><code class="php variable">$i</code> <code class="php plain">= 0;</code><code class="php variable">$i</code> <code class="php plain">< </code><code class="php functions">strlen</code><code class="php plain">(</code><code class="php variable">$txt</code><code class="php plain">); </code><code class="php variable">$i</code><code class="php plain">++) { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>41</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$md5</code> <code class="php plain">= </code><code class="php variable">$txt</code><code class="php plain">[</code><code class="php variable">$i</code><code class="php plain">]; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>42</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$tmp</code> <code class="php plain">.= </code><code class="php variable">$txt</code><code class="php plain">[++</code><code class="php variable">$i</code><code class="php plain">] ^ </code><code class="php variable">$md5</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>43</code></td> <td class="content"><code class="spaces"> </code><code class="spaces"> </code><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>44</code></td> <td class="content"><code class="spaces"> </code><code class="php keyword">return</code> <code class="php variable">$tmp</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>45</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>46</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table><table> <tbody> <tr> <td class="number"><code>47</code></td> <td class="content"><code class="php keyword">private</code> <code class="php keyword">function</code> <code class="php plain">__key(</code><code class="php variable">$txt</code><code class="php plain">,</code><code class="php variable">$encrypt_key</code><code class="php plain">) { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>48</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$encrypt_key</code> <code class="php plain">= md5(</code><code class="php variable">$encrypt_key</code><code class="php plain">); </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>49</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$ctr</code> <code class="php plain">= 0; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>50</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$tmp</code> <code class="php plain">= </code><code class="php string">''</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>51</code></td> <td class="content"><code class="spaces"> </code><code class="php keyword">for</code><code class="php plain">(</code><code class="php variable">$i</code> <code class="php plain">= 0; </code><code class="php variable">$i</code> <code class="php plain">< </code><code class="php functions">strlen</code><code class="php plain">(</code><code class="php variable">$txt</code><code class="php plain">); </code><code class="php variable">$i</code><code class="php plain">++) { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>52</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$ctr</code> <code class="php plain">= </code><code class="php variable">$ctr</code> <code class="php plain">== </code><code class="php functions">strlen</code><code class="php plain">(</code><code class="php variable">$encrypt_key</code><code class="php plain">) ? 0 : </code><code class="php variable">$ctr</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>53</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$tmp</code> <code class="php plain">.= </code><code class="php variable">$txt</code><code class="php plain">[</code><code class="php variable">$i</code><code class="php plain">] ^ </code><code class="php variable">$encrypt_key</code><code class="php plain">[</code><code class="php variable">$ctr</code><code class="php plain">++]; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>54</code></td> <td class="content"><code class="spaces"> </code><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>55</code></td> <td class="content"><code class="spaces"> </code><code class="php keyword">return</code> <code class="php variable">$tmp</code><code class="php plain">; </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>56</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>57</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>58</code></td> <td class="content"><code class="php keyword">public</code> <code class="php keyword">function</code> <code class="php plain">__destruct() { </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>59</code></td> <td class="content"><code class="spaces"> </code><code class="php variable">$this</code> <code class="php plain">-> crypt_key = null; </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>60</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>61</code></td> <td class="content"><code class="php plain">} </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>62</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>63</code></td> <td class="content"><code class="spaces"> </code></td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>64</code></td> <td class="content"> <code class="php variable">$sc</code> <code class="php plain">= </code><code class="php keyword">new</code> <code class="php plain">SysCrypt(</code><code class="php string">'phpwms'</code><code class="php plain">); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>65</code></td> <td class="content"> <code class="php variable">$text</code> <code class="php plain">= </code><code class="php string">'110'</code><code class="php plain">; </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>66</code></td> <td class="content"> <code class="php plain">print(</code><code class="php variable">$sc</code> <code class="php plain">-> php_encrypt(</code><code class="php variable">$text</code><code class="php plain">)); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>67</code></td> <td class="content"> <code class="php plain">print(</code><code class="php string">'<br>'</code><code class="php plain">); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>68</code></td> <td class="content"> <code class="php plain">print(</code><code class="php variable">$sc</code> <code class="php plain">-> php_decrypt(</code><code class="php variable">$sc</code> <code class="php plain">-> php_encrypt(</code><code class="php variable">$text</code><code class="php plain">))); </code> </td> </tr> </tbody> </table> <table> <tbody> <tr> <td class="number"><code>69</code></td> <td class="content"><code class="php plain">?></code></td> </tr> </tbody> </table> <p align="left"></p> <div style="display:none;"> <span id="url" itemprop="url">http://www.bkjia.com/PHPjc/371817.html</span><span id="indexUrl" itemprop="indexUrl">www.bkjia.com</span><span id="isOriginal" itemprop="isOriginal">tru​​e</span><span id="isBasedOnUrl" itemprop="isBasedOnUrl">http://www.bkjia.com/PHPjc/371817.html</span><span id="genre" itemprop="genre">技術記事</span><span id="description" itemprop="description"> ?php 02 /*============================================= ============== 03 = 版权协议： 04 = GPL (GNU GENERAL PUBLIC LICENSE バージョン 2、1991 年 6 月) 05 =-------------- --------...</span> </div> <div class="art_confoot"></div>