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<!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"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.5"/> <title>Apache Portable Runtime: Random Functions</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table 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href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Pages</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </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"> <div class="title">Random Functions<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a></div></div> </div> </div><!--header--> <div class="contents"> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a> Data Structures</h2></td></tr> <tr class="memitem:"><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 class="separator:"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a> Typedefs</h2></td></tr> <tr class="memitem:ga30fbaf80424a9f1a0e9cc51072f65127"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga30fbaf80424a9f1a0e9cc51072f65127"></a> 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 class="separator:ga30fbaf80424a9f1a0e9cc51072f65127"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad2775bc1cdb376d9dec0e97283b4bdd9"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gad2775bc1cdb376d9dec0e97283b4bdd9"></a> 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 class="separator:gad2775bc1cdb376d9dec0e97283b4bdd9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga2f8a4fb18078a76357327ea55936c1ea"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga2f8a4fb18078a76357327ea55936c1ea"></a> 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 class="separator:ga2f8a4fb18078a76357327ea55936c1ea"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab70ea9133870efdb5532d20d4bcf7442"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gab70ea9133870efdb5532d20d4bcf7442"></a> 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 class="separator:gab70ea9133870efdb5532d20d4bcf7442"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga33073741e56b1bafe52ba58cefcbbf96"><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 class="separator:ga33073741e56b1bafe52ba58cefcbbf96"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:ga564e4c380e820a9b0d9e877d4852a65e"><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 class="separator:ga564e4c380e820a9b0d9e877d4852a65e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae992c6f642e9661d2417cd8f2df8d345"><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 class="separator:gae992c6f642e9661d2417cd8f2df8d345"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga0184a90774212132f883c463811aacdc"><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 class="separator:ga0184a90774212132f883c463811aacdc"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga7a73c9bcf026b63847aeae483c53191f"><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 class="separator:ga7a73c9bcf026b63847aeae483c53191f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga8cf2875644c1dffc0c336289bd370efb"><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 class="separator:ga8cf2875644c1dffc0c336289bd370efb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab9a63359bb9543d746e6fd46933b7256"><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 class="separator:gab9a63359bb9543d746e6fd46933b7256"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga9f0607e06656a1c76cc5ee878fd94f09"><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 class="separator:ga9f0607e06656a1c76cc5ee878fd94f09"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga37d8d7529cf972c605ebce97c57f8825"><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 class="separator:ga37d8d7529cf972c605ebce97c57f8825"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga99d0c0722eeef2951e8ccede2e1451fa"><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 class="separator:ga99d0c0722eeef2951e8ccede2e1451fa"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga6465698bdc752d07abc8c515aac6e2c0"><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 class="separator:ga6465698bdc752d07abc8c515aac6e2c0"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa1ab9b8adeeb6e37bb29def249ff9e6a"><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> <tr class="separator:gaa1ab9b8adeeb6e37bb29def249ff9e6a"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <h2 class="groupheader">Typedef Documentation</h2> <a class="anchor" id="ga33073741e56b1bafe52ba58cefcbbf96"></a> <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> <h2 class="groupheader">Function Documentation</h2> <a class="anchor" id="gae992c6f642e9661d2417cd8f2df8d345"></a> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">proc</td><td>The resulting process handle from <a class="el" href="group__apr__thread__proc.html#ga3d0415bf69b0a629a929833e82758b85">apr_proc_fork()</a> </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</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 <a class="el" href="group__apr__thread__proc.html#ga3d0415bf69b0a629a929833e82758b85">apr_proc_fork()</a> calls this for you, so only weird applications need ever call it themselves. </dd></dl> </div> </div> <a class="anchor" id="ga37d8d7529cf972c605ebce97c57f8825"></a> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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> <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 class="params"><dt>Parameters</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><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.5 </small></address> </body> </html>