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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: PKCS5_PBKDF2_HMAC< T > Class Template Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li class="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>PKCS5_PBKDF2_HMAC< T > Class Template Reference</h1><!-- doxytag: class="PKCS5_PBKDF2_HMAC" --><!-- doxytag: inherits="PasswordBasedKeyDerivationFunction" --><code>#include <<a class="el" href="pwdbased_8h-source.html">pwdbased.h</a>></code><p><p>Inheritance diagram for PKCS5_PBKDF2_HMAC< T >:<p><center><img src="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c.png" usemap="#PKCS5_PBKDF2_HMAC< T >_map" border="0" alt=""></center><map name="PKCS5_PBKDF2_HMAC< T >_map"><area href="class_password_based_key_derivation_function.html" alt="PasswordBasedKeyDerivationFunction" shape="rect" coords="0,0,231,24"></map><a href="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2><h3>template<class T><br> class PKCS5_PBKDF2_HMAC< T ></h3>PBKDF2 from PKCS #5, T should be a <a class="el" href="class_hash_transformation.html" title="interface for hash functions and data processing part of MACs">HashTransformation</a> class. <p><p>Definition at line <a class="el" href="pwdbased_8h-source.html#l00037">37</a> of file <a class="el" href="pwdbased_8h-source.html">pwdbased.h</a>.<table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="28431120ba04fedfcf0b8fb53e826854"></a><!-- doxytag: member="PKCS5_PBKDF2_HMAC::MaxDerivedKeyLength" ref="28431120ba04fedfcf0b8fb53e826854" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c.html#28431120ba04fedfcf0b8fb53e826854">MaxDerivedKeyLength</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8e823e1fd1287aaab5d0f1519f94df45"></a><!-- doxytag: member="PKCS5_PBKDF2_HMAC::UsesPurposeByte" ref="8e823e1fd1287aaab5d0f1519f94df45" args="() const" -->bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c.html#8e823e1fd1287aaab5d0f1519f94df45">UsesPurposeByte</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c.html#570d711d2a840cdcca4b574b6c20f368">DeriveKey</a> (byte *derived, size_t derivedLen, byte purpose, const byte *password, size_t passwordLen, const byte *salt, size_t saltLen, unsigned int iterations, double timeInSeconds=0) const </td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">derive key from password <a href="#570d711d2a840cdcca4b574b6c20f368"></a><br></td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="570d711d2a840cdcca4b574b6c20f368"></a><!-- doxytag: member="PKCS5_PBKDF2_HMAC::DeriveKey" ref="570d711d2a840cdcca4b574b6c20f368" args="(byte *derived, size_t derivedLen, byte purpose, const byte *password, size_t passwordLen, const byte *salt, size_t saltLen, unsigned int iterations, double timeInSeconds=0) const " --><div class="memitem"><div class="memproto"><div class="memtemplate">template<class T> </div> <table class="memname"> <tr> <td class="memname">unsigned int <a class="el" href="class_p_k_c_s5___p_b_k_d_f2___h_m_a_c.html">PKCS5_PBKDF2_HMAC</a>< T >::DeriveKey </td> <td>(</td> <td class="paramtype">byte * </td> <td class="paramname"> <em>derived</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"> <em>derivedLen</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">byte </td> <td class="paramname"> <em>purpose</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const byte * </td> <td class="paramname"> <em>password</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"> <em>passwordLen</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const byte * </td> <td class="paramname"> <em>salt</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"> <em>saltLen</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>iterations</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"> <em>timeInSeconds</em> = <code>0</code></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"> const<code> [inline, virtual]</code></td> </tr> </table></div><div class="memdoc"><p>derive key from password <p>If timeInSeconds != 0, will iterate until time elapsed, as measured by <a class="el" href="class_thread_user_timer.html" title="measure CPU time spent executing instructions of this thread (if supported by OS)...">ThreadUserTimer</a> Returns actual iteration count, which is equal to iterations if timeInSeconds == 0, and not less than iterations otherwise. <p>Implements <a class="el" href="class_password_based_key_derivation_function.html#eaff60e52adddbaf6abd9ff2b64f5356">PasswordBasedKeyDerivationFunction</a>.<p>Definition at line <a class="el" href="pwdbased_8h-source.html#l00085">85</a> of file <a class="el" href="pwdbased_8h-source.html">pwdbased.h</a>.<p>References <a class="el" href="cryptlib_8h-source.html#l00563">HashTransformation::CalculateDigest()</a>, <a class="el" href="hmac_8h-source.html#l00022">HMAC_Base::DigestSize()</a>, <a class="el" href="cryptlib_8h-source.html#l00543">HashTransformation::Final()</a>, <a class="el" href="pwdbased_8h-source.html#l00040">PKCS5_PBKDF2_HMAC< T >::MaxDerivedKeyLength()</a>, and <a class="el" href="hmac_8cpp-source.html#l00060">HMAC_Base::Update()</a>.</div></div><p><hr>The documentation for this class was generated from the following file:<ul><li><a class="el" href="pwdbased_8h-source.html">pwdbased.h</a></ul><hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 1 11:11:45 2007 for Crypto++ by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.2 </small></address></body></html>⌨️ 快捷键说明
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