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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_0103a8ad82dcc2c51f5cde661b4b5cb7.html">xrpl</a></li><li class="navelem"><a class="el" href="dir_fa77fa27b6f9b14852ffed773edfc41e.html">crypto</a></li> </ul>
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<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/*</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">*/</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">//==============================================================================</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef RIPPLE_CRYPTO_RANDOM_H_INCLUDED</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define RIPPLE_CRYPTO_RANDOM_H_INCLUDED</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a>&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="foldopen" id="foldopen00035" data-start="{" data-end="};">
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html"> 35</a></span><span class="keyword">class </span><a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span>{</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a97b1006643b8f6035436b268ec9925bd"> 38</a></span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/thread/mutex.html">std::mutex</a> <a class="code hl_variable" href="classripple_1_1csprng__engine.html#a97b1006643b8f6035436b268ec9925bd">mutex_</a>;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a1d06454904c264b7a0cce18101762af3"> 41</a></span> <span class="keyword">using </span><a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">result_type</a> = <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a>;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a37724c0df98f8a8d2a315e2f1908941e"> 43</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a37724c0df98f8a8d2a315e2f1908941e">csprng_engine</a>(<a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a> <span class="keyword">const</span>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a>&amp;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a473e3aef0b4ee15845160c0204c338ce"> 45</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a473e3aef0b4ee15845160c0204c338ce">operator=</a>(<a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a> <span class="keyword">const</span>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a95136e7733b5128da3258989d6a99be8"> 47</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a95136e7733b5128da3258989d6a99be8">csprng_engine</a>(<a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a>&amp;&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a>&amp;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#ad30086b9e4e7607f0a8bcaae2b5d4b3a"> 49</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#ad30086b9e4e7607f0a8bcaae2b5d4b3a">operator=</a>(<a class="code hl_class" href="classripple_1_1csprng__engine.html">csprng_engine</a>&amp;&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#accace645f13187f316df3fa6fc2fa42f">csprng_engine</a>();</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a3386463bc8eab7446790a07c8c987682">~csprng_engine</a>();</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#adcde93c17e1dc87ad4e382c971022a44">mix_entropy</a>(<span class="keywordtype">void</span>* buffer = <span class="keyword">nullptr</span>, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> count = 0);</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">result_type</a></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a6b969b83bee1e62da4460739d6af07d1">operator()</a>();</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a6b969b83bee1e62da4460739d6af07d1">operator()</a>(<span class="keywordtype">void</span>* ptr, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> count);</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="comment">/* The smallest possible value that can be returned */</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">result_type</a></div>
<div class="foldopen" id="foldopen00068" data-start="{" data-end="}">
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#a19d88390808ec5d20e22ce54b8282be2"> 68</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#a19d88390808ec5d20e22ce54b8282be2">min</a>()</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">return</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits/min.html">std::numeric_limits&lt;result_type&gt;::min</a>();</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="comment">/* The largest possible value that can be returned */</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <a class="code hl_typedef" href="classripple_1_1csprng__engine.html#a1d06454904c264b7a0cce18101762af3">result_type</a></div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="classripple_1_1csprng__engine.html#aef86b5d2308d9e403ae27d4c2e049f3b"> 75</a></span> <a class="code hl_function" href="classripple_1_1csprng__engine.html#aef86b5d2308d9e403ae27d4c2e049f3b">max</a>()</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> {</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">return</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits/max.html">std::numeric_limits&lt;result_type&gt;::max</a>();</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> }</div>
</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>};</div>
</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>csprng_engine&amp;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><a class="code hl_function" href="namespaceripple.html#a64faabbdff83da8b7fd7aaafbb937867">crypto_prng</a>();</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>} <span class="comment">// namespace ripple</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html"><div class="ttname"><a href="classripple_1_1csprng__engine.html">ripple::csprng_engine</a></div><div class="ttdoc">A cryptographically secure random number engine.</div><div class="ttdef"><b>Definition</b> <a href="csprng_8h_source.html#l00035">csprng.h:36</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a19d88390808ec5d20e22ce54b8282be2"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a19d88390808ec5d20e22ce54b8282be2">ripple::csprng_engine::min</a></div><div class="ttdeci">static constexpr result_type min()</div><div class="ttdef"><b>Definition</b> <a href="csprng_8h_source.html#l00068">csprng.h:68</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a1d06454904c264b7a0cce18101762af3"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a1d06454904c264b7a0cce18101762af3">ripple::csprng_engine::result_type</a></div><div class="ttdeci">std::uint64_t result_type</div><div class="ttdef"><b>Definition</b> <a href="csprng_8h_source.html#l00041">csprng.h:41</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a3386463bc8eab7446790a07c8c987682"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a3386463bc8eab7446790a07c8c987682">ripple::csprng_engine::~csprng_engine</a></div><div class="ttdeci">~csprng_engine()</div><div class="ttdef"><b>Definition</b> <a href="libxrpl_2crypto_2csprng_8cpp_source.html#l00041">libxrpl/crypto/csprng.cpp:41</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a37724c0df98f8a8d2a315e2f1908941e"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a37724c0df98f8a8d2a315e2f1908941e">ripple::csprng_engine::csprng_engine</a></div><div class="ttdeci">csprng_engine(csprng_engine const &amp;)=delete</div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a473e3aef0b4ee15845160c0204c338ce"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a473e3aef0b4ee15845160c0204c338ce">ripple::csprng_engine::operator=</a></div><div class="ttdeci">csprng_engine &amp; operator=(csprng_engine const &amp;)=delete</div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a6b969b83bee1e62da4460739d6af07d1"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a6b969b83bee1e62da4460739d6af07d1">ripple::csprng_engine::operator()</a></div><div class="ttdeci">result_type operator()()</div><div class="ttdoc">Generate a random integer.</div><div class="ttdef"><b>Definition</b> <a href="libxrpl_2crypto_2csprng_8cpp_source.html#l00095">libxrpl/crypto/csprng.cpp:95</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a95136e7733b5128da3258989d6a99be8"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a95136e7733b5128da3258989d6a99be8">ripple::csprng_engine::csprng_engine</a></div><div class="ttdeci">csprng_engine(csprng_engine &amp;&amp;)=delete</div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_a97b1006643b8f6035436b268ec9925bd"><div class="ttname"><a href="classripple_1_1csprng__engine.html#a97b1006643b8f6035436b268ec9925bd">ripple::csprng_engine::mutex_</a></div><div class="ttdeci">std::mutex mutex_</div><div class="ttdef"><b>Definition</b> <a href="csprng_8h_source.html#l00038">csprng.h:38</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_accace645f13187f316df3fa6fc2fa42f"><div class="ttname"><a href="classripple_1_1csprng__engine.html#accace645f13187f316df3fa6fc2fa42f">ripple::csprng_engine::csprng_engine</a></div><div class="ttdeci">csprng_engine()</div><div class="ttdef"><b>Definition</b> <a href="libxrpl_2crypto_2csprng_8cpp_source.html#l00034">libxrpl/crypto/csprng.cpp:34</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_ad30086b9e4e7607f0a8bcaae2b5d4b3a"><div class="ttname"><a href="classripple_1_1csprng__engine.html#ad30086b9e4e7607f0a8bcaae2b5d4b3a">ripple::csprng_engine::operator=</a></div><div class="ttdeci">csprng_engine &amp; operator=(csprng_engine &amp;&amp;)=delete</div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_adcde93c17e1dc87ad4e382c971022a44"><div class="ttname"><a href="classripple_1_1csprng__engine.html#adcde93c17e1dc87ad4e382c971022a44">ripple::csprng_engine::mix_entropy</a></div><div class="ttdeci">void mix_entropy(void *buffer=nullptr, std::size_t count=0)</div><div class="ttdoc">Mix entropy into the pool.</div><div class="ttdef"><b>Definition</b> <a href="libxrpl_2crypto_2csprng_8cpp_source.html#l00050">libxrpl/crypto/csprng.cpp:50</a></div></div>
<div class="ttc" id="aclassripple_1_1csprng__engine_html_aef86b5d2308d9e403ae27d4c2e049f3b"><div class="ttname"><a href="classripple_1_1csprng__engine.html#aef86b5d2308d9e403ae27d4c2e049f3b">ripple::csprng_engine::max</a></div><div class="ttdeci">static constexpr result_type max()</div><div class="ttdef"><b>Definition</b> <a href="csprng_8h_source.html#l00075">csprng.h:75</a></div></div>
<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a></div></div>
<div class="ttc" id="amax_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/numeric_limits/max.html">std::numeric_limits::max</a></div><div class="ttdeci">T max(T... args)</div></div>
<div class="ttc" id="amin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/numeric_limits/min.html">std::numeric_limits::min</a></div><div class="ttdeci">T min(T... args)</div></div>
<div class="ttc" id="amutex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition</b> <a href="algorithm_8h_source.html#l00025">algorithm.h:25</a></div></div>
<div class="ttc" id="anamespaceripple_html_a64faabbdff83da8b7fd7aaafbb937867"><div class="ttname"><a href="namespaceripple.html#a64faabbdff83da8b7fd7aaafbb937867">ripple::crypto_prng</a></div><div class="ttdeci">csprng_engine &amp; crypto_prng()</div><div class="ttdoc">The default cryptographically secure PRNG.</div><div class="ttdef"><b>Definition</b> <a href="libxrpl_2crypto_2csprng_8cpp_source.html#l00103">libxrpl/crypto/csprng.cpp:103</a></div></div>
<div class="ttc" id="asize_t_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div></div>
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