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  41. 

  42. <h1 align="center">Source for file PasswordHasher.php</h1>
    43. 

  43. <p>Documentation is available at <a href="../PHPExcel_Shared/_Classes_PHPExcel_Shared_PasswordHasher_php.html">PasswordHasher.php</a></p>
    44. 

  44. <div class="php">
    45. 

  45. <div class="listing"><pre><ol><li><a name="a1"></a><span class="src-php">&lt;?php</span></li>
    46. 

  46. <li><a name="a2"></a><span class="src-doc">/**</span></li>
    47. 

  47. <li><a name="a3"></a><span class="src-doc"> * PHPExcel</span></li>
    48. 

  48. <li><a name="a4"></a><span class="src-doc"> *</span></li>
    49. 

  49. <li><a name="a5"></a><span class="src-doc"> * Copyright (c) 2006 - 2007 PHPExcel, Maarten Balliauw</span></li>
    50. 

  50. <li><a name="a6"></a><span class="src-doc"> *</span></li>
    51. 

  51. <li><a name="a7"></a><span class="src-doc"> * This library is free software; you can redistribute it and/or</span></li>
    52. 

  52. <li><a name="a8"></a><span class="src-doc"> * modify it under the terms of the GNU Lesser General Public</span></li>
    53. 

  53. <li><a name="a9"></a><span class="src-doc"> * License as published by the Free Software Foundation; either</span></li>
    54. 

  54. <li><a name="a10"></a><span class="src-doc"> * version 2.1 of the License, or (at your option) any later version.</span></li>
    55. 

  55. <li><a name="a11"></a><span class="src-doc"> * </span></li>
    56. 

  56. <li><a name="a12"></a><span class="src-doc"> * This library is distributed in the hope that it will be useful,</span></li>
    57. 

  57. <li><a name="a13"></a><span class="src-doc"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></li>
    58. 

  58. <li><a name="a14"></a><span class="src-doc"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</span></li>
    59. 

  59. <li><a name="a15"></a><span class="src-doc"> * Lesser General Public License for more details.</span></li>
    60. 

  60. <li><a name="a16"></a><span class="src-doc"> * </span></li>
    61. 

  61. <li><a name="a17"></a><span class="src-doc"> * You should have received a copy of the GNU Lesser General Public</span></li>
    62. 

  62. <li><a name="a18"></a><span class="src-doc"> * License along with this library; if not, write to the Free Software</span></li>
    63. 

  63. <li><a name="a19"></a><span class="src-doc"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA</span></li>
    64. 

  64. <li><a name="a20"></a><span class="src-doc"> *</span></li>
    65. 

  65. <li><a name="a21"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@category</span><span class="src-doc">   PHPExcel</span></li>
    66. 

  66. <li><a name="a22"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@package</span><span class="src-doc">    PHPExcel_Shared</span></li>
    67. 

  67. <li><a name="a23"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@copyright</span><span class="src-doc">  Copyright (c) 2006 - 2007 PHPExcel (http://www.codeplex.com/PHPExcel)</span></li>
    68. 

  68. <li><a name="a24"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@license</span><span class="src-doc">    http://www.gnu.org/licenses/lgpl.txt    LGPL</span></li>
    69. 

  69. <li><a name="a25"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@version</span><span class="src-doc">    ##VERSION##, ##DATE##</span></li>
    70. 

  70. <li><a name="a26"></a><span class="src-doc"> */</span></li>
    71. 

  71. <li><a name="a27"></a>&nbsp;</li>
    72. 

  72. <li><a name="a28"></a>&nbsp;</li>
    73. 

  73. <li><a name="a29"></a><span class="src-doc">/**</span></li>
    74. 

  74. <li><a name="a30"></a><span class="src-doc"> * PHPExcel_Shared_PasswordHasher</span></li>
    75. 

  75. <li><a name="a31"></a><span class="src-doc"> *</span></li>
    76. 

  76. <li><a name="a32"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@category</span><span class="src-doc">   PHPExcel</span></li>
    77. 

  77. <li><a name="a33"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@package</span><span class="src-doc">    PHPExcel_Shared</span></li>
    78. 

  78. <li><a name="a34"></a><span class="src-doc"> * </span><span class="src-doc-coretag">@copyright</span><span class="src-doc">  Copyright (c) 2006 - 2007 PHPExcel (http://www.codeplex.com/PHPExcel)</span></li>
    79. 

  79. <li><a name="a35"></a><span class="src-doc"> */</span></li>
    80. 

  80. <li><a name="a36"></a><span class="src-key">class </span><a href="../PHPExcel_Shared/PHPExcel_Shared_PasswordHasher.html">PHPExcel_Shared_PasswordHasher</a></li>
    81. 

  81. <li><a name="a37"></a><span class="src-sym">{</span></li>
    82. 

  82. <li><a name="a38"></a>    <span class="src-doc">/**</span></li>
    83. 

  83. <li><a name="a39"></a><span class="src-doc">     * Create a password hash from a given string.</span></li>
    84. 

  84. <li><a name="a40"></a><span class="src-doc">     *</span></li>
    85. 

  85. <li><a name="a41"></a><span class="src-doc">     * This method is based on the algorithm provided by</span></li>
    86. 

  86. <li><a name="a42"></a><span class="src-doc">     * Daniel Rentz of OpenOffice and the PEAR package</span></li>
    87. 

  87. <li><a name="a43"></a><span class="src-doc">     * Spreadsheet_Excel_Writer by Xavier Noguer &lt;xnoguer@rezebra.com&gt;.</span></li>
    88. 

  88. <li><a name="a44"></a><span class="src-doc">     *</span></li>
    89. 

  89. <li><a name="a45"></a><span class="src-doc">     * </span><span class="src-doc-coretag">@param </span><span class="src-doc">    </span><span class="src-doc-type">string </span><span class="src-doc">   </span><span class="src-doc-var">$pPassword </span><span class="src-doc">   Password to hash</span></li>
    90. 

  90. <li><a name="a46"></a><span class="src-doc">     * </span><span class="src-doc-coretag">@return </span><span class="src-doc">    </span><span class="src-doc-type">string </span><span class="src-doc">               Hashed password</span></li>
    91. 

  91. <li><a name="a47"></a><span class="src-doc">     */</span></li>
    92. 

  92. <li><a name="a48"></a>    <span class="src-key">public </span><span class="src-key">static </span><span class="src-key">function </span><a href="../PHPExcel_Shared/PHPExcel_Shared_PasswordHasher.html#methodhashPassword">hashPassword</a><span class="src-sym">(</span><span class="src-var">$pPassword </span>= <span class="src-str">''</span><span class="src-sym">) </span><span class="src-sym">{</span></li>
    93. 

  93. <li><a name="a49"></a>        <span class="src-var">$password </span>= <span class="src-num">0x0000</span><span class="src-sym">;</span></li>
    94. 

  94. <li><a name="a50"></a>        <span class="src-var">$i        </span>= <span class="src-num">1</span><span class="src-sym">;       </span><span class="src-comm">// char position</span></li>
    95. 

  95. <li><a name="a51"></a>&nbsp;</li>
    96. 

  96. <li><a name="a52"></a>        <span class="src-comm">// split the plain text password in its component characters</span></li>
    97. 

  97. <li><a name="a53"></a>        <span class="src-var">$chars </span>= <a href="http://www.php.net/preg_split">preg_split</a><span class="src-sym">(</span><span class="src-str">'//'</span><span class="src-sym">, </span><span class="src-var">$pPassword</span><span class="src-sym">, </span>-<span class="src-num">1</span><span class="src-sym">, </span><span class="src-id">PREG_SPLIT_NO_EMPTY</span><span class="src-sym">)</span><span class="src-sym">;</span></li>
    98. 

  98. <li><a name="a54"></a>        <span class="src-key">foreach </span><span class="src-sym">(</span><span class="src-var">$chars </span><span class="src-key">as </span><span class="src-var">$char</span><span class="src-sym">) </span><span class="src-sym">{</span></li>
    99. 

  99. <li><a name="a55"></a>            <span class="src-var">$value        </span>= <a href="http://www.php.net/ord">ord</a><span class="src-sym">(</span><span class="src-var">$char</span><span class="src-sym">) </span>&lt;&lt; <span class="src-var">$i</span><span class="src-sym">;   </span><span class="src-comm">// shifted ASCII value</span></li>
    100. 

  100. <li><a name="a56"></a>            <span class="src-var">$rotated_bits </span>= <span class="src-var">$value </span>&gt;&gt; <span class="src-num">15</span><span class="src-sym">;       </span><span class="src-comm">// rotated bits beyond bit 15</span></li>
    101. 

  101. <li><a name="a57"></a>            <span class="src-var">$value       </span>&amp;= <span class="src-num">0x7fff</span><span class="src-sym">;             </span><span class="src-comm">// first 15 bits</span></li>
    102. 

  102. <li><a name="a58"></a>            <span class="src-var">$password    </span>^= <span class="src-sym">(</span><span class="src-var">$value </span>| <span class="src-var">$rotated_bits</span><span class="src-sym">)</span><span class="src-sym">;</span></li>
    103. 

  103. <li><a name="a59"></a>            <span class="src-var">$i</span>++<span class="src-sym">;</span></li>
    104. 

  104. <li><a name="a60"></a>        <span class="src-sym">}</span></li>
    105. 

  105. <li><a name="a61"></a>&nbsp;</li>
    106. 

  106. <li><a name="a62"></a>        <span class="src-var">$password </span>^= <a href="http://www.php.net/strlen">strlen</a><span class="src-sym">(</span><span class="src-var">$pPassword</span><span class="src-sym">)</span><span class="src-sym">;</span></li>
    107. 

  107. <li><a name="a63"></a>        <span class="src-var">$password </span>^= <span class="src-num">0xCE4B</span><span class="src-sym">;</span></li>
    108. 

  108. <li><a name="a64"></a>&nbsp;</li>
    109. 

  109. <li><a name="a65"></a>        <span class="src-key">return</span><span class="src-sym">(</span><a href="http://www.php.net/strtoupper">strtoupper</a><span class="src-sym">(</span><a href="http://www.php.net/dechex">dechex</a><span class="src-sym">(</span><span class="src-var">$password</span><span class="src-sym">)))</span><span class="src-sym">;</span></li>
    110. 

  110. <li><a name="a66"></a>    <span class="src-sym">}</span></li>
    111. 

  111. <li><a name="a67"></a><span class="src-sym">}</span></li>
    112. 

  112. </ol></pre></div>
    113. 

  113. </div>
    114. 

  114.         <div class="credit">
    115. 

  115. 		    <hr />
    116. 

  116. 		    Documentation generated on Mon, 23 Apr 2007 12:54:49 +0200 by <a href="http://www.phpdoc.org">phpDocumentor 1.3.0RC3</a>
    117. 

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