<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>Apache Portable Runtime: Random Functions</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body onload='searchBox.OnSelectItem(0);'>
<!-- Generated by Doxygen 1.7.3 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">Apache Portable Runtime</div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li id="searchli">
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
</div>
<div class="header">
<div class="summary">
<a href="#nested-classes">Data Structures</a> |
<a href="#typedef-members">Typedefs</a> |
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<h1>Random Functions</h1> </div>
<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a></div></div>
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a></td></tr>
<tr><td colspan="2"><h2><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga30fbaf80424a9f1a0e9cc51072f65127"></a><!-- doxytag: member="apr_random::apr_crypto_hash_t" ref="ga30fbaf80424a9f1a0e9cc51072f65127" args="" -->
typedef struct <a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> </td><td class="memItemRight" valign="bottom"><b>apr_crypto_hash_t</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gad2775bc1cdb376d9dec0e97283b4bdd9"></a><!-- doxytag: member="apr_random::apr_crypto_hash_init_t" ref="gad2775bc1cdb376d9dec0e97283b4bdd9" args="(apr_crypto_hash_t *hash)" -->
typedef void </td><td class="memItemRight" valign="bottom"><b>apr_crypto_hash_init_t</b> (<a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *hash)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga2f8a4fb18078a76357327ea55936c1ea"></a><!-- doxytag: member="apr_random::apr_crypto_hash_add_t" ref="ga2f8a4fb18078a76357327ea55936c1ea" args="(apr_crypto_hash_t *hash, const void *data, apr_size_t bytes)" -->
typedef void </td><td class="memItemRight" valign="bottom"><b>apr_crypto_hash_add_t</b> (<a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *hash, const void *data, apr_size_t bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gab70ea9133870efdb5532d20d4bcf7442"></a><!-- doxytag: member="apr_random::apr_crypto_hash_finish_t" ref="gab70ea9133870efdb5532d20d4bcf7442" args="(apr_crypto_hash_t *hash, unsigned char *result)" -->
typedef void </td><td class="memItemRight" valign="bottom"><b>apr_crypto_hash_finish_t</b> (<a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *hash, unsigned char *result)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a></td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga564e4c380e820a9b0d9e877d4852a65e">apr_generate_random_bytes</a> (unsigned char *buf, apr_size_t length)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#gae992c6f642e9661d2417cd8f2df8d345">apr_crypto_sha256_new</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga0184a90774212132f883c463811aacdc">apr_random_init</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *g, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, <a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *pool_hash, <a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *key_hash, <a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> *prng_hash)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga7a73c9bcf026b63847aeae483c53191f">apr_random_standard_new</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga8cf2875644c1dffc0c336289bd370efb">apr_random_add_entropy</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *g, const void *entropy_, apr_size_t bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#gab9a63359bb9543d746e6fd46933b7256">apr_random_insecure_bytes</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *g, void *random, apr_size_t bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga9f0607e06656a1c76cc5ee878fd94f09">apr_random_secure_bytes</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *g, void *random, apr_size_t bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga37d8d7529cf972c605ebce97c57f8825">apr_random_barrier</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *g)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga99d0c0722eeef2951e8ccede2e1451fa">apr_random_secure_ready</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *r)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#ga6465698bdc752d07abc8c515aac6e2c0">apr_random_insecure_ready</a> (<a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> *r)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__random.html#gaa1ab9b8adeeb6e37bb29def249ff9e6a">apr_random_after_fork</a> (<a class="el" href="structapr__proc__t.html">apr_proc_t</a> *proc)</td></tr>
</table>
<hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="ga33073741e56b1bafe52ba58cefcbbf96"></a><!-- doxytag: member="apr_random.h::apr_random_t" ref="ga33073741e56b1bafe52ba58cefcbbf96" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">typedef struct <a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> <a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Opaque PRNG structure. </p>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gae992c6f642e9661d2417cd8f2df8d345"></a><!-- doxytag: member="apr_random.h::apr_crypto_sha256_new" ref="gae992c6f642e9661d2417cd8f2df8d345" args="(apr_pool_t *p)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a>* apr_crypto_sha256_new </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Allocate and initialize the SHA-256 context </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The pool to allocate from </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga564e4c380e820a9b0d9e877d4852a65e"></a><!-- doxytag: member="apr_general.h::apr_generate_random_bytes" ref="ga564e4c380e820a9b0d9e877d4852a65e" args="(unsigned char *buf, apr_size_t length)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_generate_random_bytes </td>
<td>(</td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>length</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Generate random bytes. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">buf</td><td>Buffer to fill with random bytes </td></tr>
<tr><td class="paramname">length</td><td>Length of buffer in bytes </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga8cf2875644c1dffc0c336289bd370efb"></a><!-- doxytag: member="apr_random.h::apr_random_add_entropy" ref="ga8cf2875644c1dffc0c336289bd370efb" args="(apr_random_t *g, const void *entropy_, apr_size_t bytes)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_random_add_entropy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>g</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>entropy_</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>bytes</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Mix the randomness pools. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">g</td><td>The PRNG state </td></tr>
<tr><td class="paramname">entropy_</td><td>Entropy buffer </td></tr>
<tr><td class="paramname">bytes</td><td>Length of entropy_ in bytes </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaa1ab9b8adeeb6e37bb29def249ff9e6a"></a><!-- doxytag: member="apr_random.h::apr_random_after_fork" ref="gaa1ab9b8adeeb6e37bb29def249ff9e6a" args="(apr_proc_t *proc)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_random_after_fork </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structapr__proc__t.html">apr_proc_t</a> * </td>
<td class="paramname"><em>proc</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Mix the randomness pools after forking. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">proc</td><td>The resulting process handle from apr_proc_fork() </td></tr>
</table>
</dd>
</dl>
<dl class="remark"><dt><b>Remarks:</b></dt><dd>Call this in the child after forking to mix the randomness pools. Note that its generally a bad idea to fork a process with a real PRNG in it - better to have the PRNG externally and get the randomness from there. However, if you really must do it, then you should supply all your entropy to all the PRNGs - don't worry, they won't produce the same output. </dd>
<dd>
Note that apr_proc_fork() calls this for you, so only weird applications need ever call it themselves. </dd></dl>
</div>
</div>
<a class="anchor" id="ga37d8d7529cf972c605ebce97c57f8825"></a><!-- doxytag: member="apr_random.h::apr_random_barrier" ref="ga37d8d7529cf972c605ebce97c57f8825" args="(apr_random_t *g)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_random_barrier </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>g</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Ensures that E bits of conditional entropy are mixed into the PRNG before any further randomness is extracted. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">g</td><td>The RNG state </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga0184a90774212132f883c463811aacdc"></a><!-- doxytag: member="apr_random.h::apr_random_init" ref="ga0184a90774212132f883c463811aacdc" args="(apr_random_t *g, apr_pool_t *p, apr_crypto_hash_t *pool_hash, apr_crypto_hash_t *key_hash, apr_crypto_hash_t *prng_hash)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_random_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>g</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> * </td>
<td class="paramname"><em>pool_hash</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> * </td>
<td class="paramname"><em>key_hash</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structapr__crypto__hash__t.html">apr_crypto_hash_t</a> * </td>
<td class="paramname"><em>prng_hash</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Initialize a PRNG state </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">g</td><td>The PRNG state </td></tr>
<tr><td class="paramname">p</td><td>The pool to allocate from </td></tr>
<tr><td class="paramname">pool_hash</td><td>Pool hash functions </td></tr>
<tr><td class="paramname">key_hash</td><td>Key hash functions </td></tr>
<tr><td class="paramname">prng_hash</td><td>PRNG hash functions </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gab9a63359bb9543d746e6fd46933b7256"></a><!-- doxytag: member="apr_random.h::apr_random_insecure_bytes" ref="gab9a63359bb9543d746e6fd46933b7256" args="(apr_random_t *g, void *random, apr_size_t bytes)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_random_insecure_bytes </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>g</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>random</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>bytes</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Generate cryptographically insecure random bytes. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">g</td><td>The RNG state </td></tr>
<tr><td class="paramname">random</td><td>Buffer to fill with random bytes </td></tr>
<tr><td class="paramname">bytes</td><td>Length of buffer in bytes </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga6465698bdc752d07abc8c515aac6e2c0"></a><!-- doxytag: member="apr_random.h::apr_random_insecure_ready" ref="ga6465698bdc752d07abc8c515aac6e2c0" args="(apr_random_t *r)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_random_insecure_ready </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>r</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return APR_SUCCESS if the PRNG has been seeded with enough data, APR_ENOTENOUGHENTROPY otherwise. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">r</td><td>The PRNG state </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga9f0607e06656a1c76cc5ee878fd94f09"></a><!-- doxytag: member="apr_random.h::apr_random_secure_bytes" ref="ga9f0607e06656a1c76cc5ee878fd94f09" args="(apr_random_t *g, void *random, apr_size_t bytes)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_random_secure_bytes </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>g</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>random</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>bytes</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Generate cryptographically secure random bytes. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">g</td><td>The RNG state </td></tr>
<tr><td class="paramname">random</td><td>Buffer to fill with random bytes </td></tr>
<tr><td class="paramname">bytes</td><td>Length of buffer in bytes </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga99d0c0722eeef2951e8ccede2e1451fa"></a><!-- doxytag: member="apr_random.h::apr_random_secure_ready" ref="ga99d0c0722eeef2951e8ccede2e1451fa" args="(apr_random_t *r)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_random_secure_ready </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a> * </td>
<td class="paramname"><em>r</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return APR_SUCCESS if the cryptographic PRNG has been seeded with enough data, APR_ENOTENOUGHENTROPY otherwise. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">r</td><td>The RNG state </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga7a73c9bcf026b63847aeae483c53191f"></a><!-- doxytag: member="apr_random.h::apr_random_standard_new" ref="ga7a73c9bcf026b63847aeae483c53191f" args="(apr_pool_t *p)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__random.html#ga33073741e56b1bafe52ba58cefcbbf96">apr_random_t</a>* apr_random_standard_new </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Allocate and initialize (apr_crypto_sha256_new) a new PRNG state. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The pool to allocate from </td></tr>
</table>
</dd>
</dl>
</div>
</div>
</div>
<!--- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Defines</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Tue Feb 8 2011 for Apache Portable Runtime by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </small></address>
</body>
</html>
