<!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>PolarSSL v1.3.8: entropy_poll.c Source File</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="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 cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">PolarSSL v1.3.8 </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_4478130ea462cc4195c75f9e6ba20061.html">library</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">entropy_poll.c</div> </div> </div><!--header--> <div class="contents"> <a href="entropy__poll_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Platform-specific and custom entropy polling functions</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2006-2014, Brainspark B.V.</span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This file is part of PolarSSL (http://www.polarssl.org)</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org></span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * All rights reserved.</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * (at your option) any later version.</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * GNU General Public License for more details.</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * You should have received a copy of the GNU General Public License along</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#if !defined(POLARSSL_CONFIG_FILE)</span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="config_8h.html">polarssl/config.h</a>"</span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"></span><span class="preprocessor">#include POLARSSL_CONFIG_FILE</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#if defined(POLARSSL_ENTROPY_C)</span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="entropy_8h.html">polarssl/entropy.h</a>"</span></div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "<a class="code" href="entropy__poll_8h.html">polarssl/entropy_poll.h</a>"</span></div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#if defined(POLARSSL_TIMING_C)</span></div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="timing_8h.html">polarssl/timing.h</a>"</span></div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(POLARSSL_HAVEGE_C)</span></div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="havege_8h.html">polarssl/havege.h</a>"</span></div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#if !defined(POLARSSL_NO_PLATFORM_ENTROPY)</span></div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)</span></div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#if !defined(_WIN32_WINNT)</span></div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span><span class="preprocessor">#define _WIN32_WINNT 0x0400</span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#include <windows.h></span></div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#include <wincrypt.h></span></div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">int</span> <a class="code" href="entropy__poll_8h.html#a44ba03df3585a31c6c8395e3893486d0">platform_entropy_poll</a>( <span class="keywordtype">void</span> *data, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> len,</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">size_t</span> *olen )</div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> {</div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  HCRYPTPROV provider;</div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ((void) data);</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  *olen = 0;</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span>( CryptAcquireContext( &provider, NULL, NULL,</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) == FALSE )</div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span>( <a class="code" href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a> );</div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span>( CryptGenRandom( provider, (DWORD) len, output ) == FALSE )</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span>( <a class="code" href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a> );</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  CryptReleaseContext( provider, 0 );</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  *olen = len;</div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span>( 0 );</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> }</div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#else </span><span class="comment">/* _WIN32 && !EFIX64 && !EFI32 */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#include <stdio.h></span></div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">int</span> <a class="code" href="entropy__poll_8h.html#a44ba03df3585a31c6c8395e3893486d0">platform_entropy_poll</a>( <span class="keywordtype">void</span> *data,</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> len, <span class="keywordtype">size_t</span> *olen )</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> {</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  FILE *file;</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">size_t</span> ret;</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  ((void) data);</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  *olen = 0;</div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  file = fopen( <span class="stringliteral">"/dev/urandom"</span>, <span class="stringliteral">"rb"</span> );</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">if</span>( file == NULL )</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span>( <a class="code" href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a> );</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  ret = fread( output, 1, len, file );</div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span>( ret != len )</div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {</div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  fclose( file );</div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span>( <a class="code" href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a> );</div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  fclose( file );</div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  *olen = len;</div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span>( 0 );</div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> }</div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#endif </span><span class="comment">/* _WIN32 && !EFIX64 && !EFI32 */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* !POLARSSL_NO_PLATFORM_ENTROPY */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#if defined(POLARSSL_TIMING_C)</span></div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"></span><span class="keywordtype">int</span> <a class="code" href="entropy__poll_8h.html#a3f46bcbc1d77975860af4690b7af9630">hardclock_poll</a>( <span class="keywordtype">void</span> *data,</div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> len, <span class="keywordtype">size_t</span> *olen )</div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> {</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> timer = <a class="code" href="timing_8h.html#a1bd62cd344b57b3239087cd8f11f9793">hardclock</a>();</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  ((void) data);</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  *olen = 0;</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span>( len < <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>) )</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span>( 0 );</div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  memcpy( output, &timer, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>) );</div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  *olen = <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> long);</div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span>( 0 );</div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_TIMING_C */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#if defined(POLARSSL_HAVEGE_C)</span></div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"></span><span class="keywordtype">int</span> havege_poll( <span class="keywordtype">void</span> *data,</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> len, <span class="keywordtype">size_t</span> *olen )</div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> {</div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="structhavege__state.html">havege_state</a> *hs = (<a class="code" href="structhavege__state.html">havege_state</a> *) data;</div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  *olen = 0;</div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span>( <a class="code" href="havege_8h.html#a6a8f466fa0a92a0a75c28cbb4eb5156a">havege_random</a>( hs, output, len ) != 0 )</div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span>( <a class="code" href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a> );</div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  *olen = len;</div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span>( 0 );</div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> }</div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_HAVEGE_C */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_ENTROPY_C */</span><span class="preprocessor"></span></div> <div class="ttc" id="config_8h_html"><div class="ttname"><a href="config_8h.html">config.h</a></div><div class="ttdoc">Configuration options (set of defines) </div></div> <div class="ttc" id="timing_8h_html_a1bd62cd344b57b3239087cd8f11f9793"><div class="ttname"><a href="timing_8h.html#a1bd62cd344b57b3239087cd8f11f9793">hardclock</a></div><div class="ttdeci">unsigned long hardclock(void)</div><div class="ttdoc">Return the CPU cycle counter value. </div></div> <div class="ttc" id="entropy__poll_8h_html"><div class="ttname"><a href="entropy__poll_8h.html">entropy_poll.h</a></div><div class="ttdoc">Platform-specific and custom entropy polling functions. </div></div> <div class="ttc" id="entropy_8h_html"><div class="ttname"><a href="entropy_8h.html">entropy.h</a></div><div class="ttdoc">Entropy accumulator implementation. </div></div> <div class="ttc" id="structhavege__state_html"><div class="ttname"><a href="structhavege__state.html">havege_state</a></div><div class="ttdoc">HAVEGE state structure. </div><div class="ttdef"><b>Definition:</b> <a href="havege_8h_source.html#l00041">havege.h:41</a></div></div> <div class="ttc" id="havege_8h_html"><div class="ttname"><a href="havege_8h.html">havege.h</a></div><div class="ttdoc">HAVEGE: HArdware Volatile Entropy Gathering and Expansion. </div></div> <div class="ttc" id="entropy__poll_8h_html_a44ba03df3585a31c6c8395e3893486d0"><div class="ttname"><a href="entropy__poll_8h.html#a44ba03df3585a31c6c8395e3893486d0">platform_entropy_poll</a></div><div class="ttdeci">int platform_entropy_poll(void *data, unsigned char *output, size_t len, size_t *olen)</div><div class="ttdoc">Platform-specific entropy poll callback. </div></div> <div class="ttc" id="havege_8h_html_a6a8f466fa0a92a0a75c28cbb4eb5156a"><div class="ttname"><a href="havege_8h.html#a6a8f466fa0a92a0a75c28cbb4eb5156a">havege_random</a></div><div class="ttdeci">int havege_random(void *p_rng, unsigned char *output, size_t len)</div><div class="ttdoc">HAVEGE rand function. </div></div> <div class="ttc" id="entropy_8h_html_ab9ff2b3b04c80aa19556ed9676bf35e2"><div class="ttname"><a href="entropy_8h.html#ab9ff2b3b04c80aa19556ed9676bf35e2">POLARSSL_ERR_ENTROPY_SOURCE_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_ENTROPY_SOURCE_FAILED</div><div class="ttdoc">Critical entropy source failure. </div><div class="ttdef"><b>Definition:</b> <a href="entropy_8h_source.html#l00056">entropy.h:56</a></div></div> <div class="ttc" id="entropy__poll_8h_html_a3f46bcbc1d77975860af4690b7af9630"><div class="ttname"><a href="entropy__poll_8h.html#a3f46bcbc1d77975860af4690b7af9630">hardclock_poll</a></div><div class="ttdeci">int hardclock_poll(void *data, unsigned char *output, size_t len, size_t *olen)</div><div class="ttdoc">hardclock-based entropy poll callback </div></div> <div class="ttc" id="timing_8h_html"><div class="ttname"><a href="timing_8h.html">timing.h</a></div><div class="ttdoc">Portable interface to the CPU cycle counter. </div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated on Thu Jul 31 2014 11:35:51 for PolarSSL v1.3.8 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>