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<div class="title">SHAKE.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (C) 2016 Southern Storm Software, Pty Ltd.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * The above copyright notice and this permission notice shall be included</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * in all copies or substantial portions of the Software.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "SHAKE.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="classSHAKE.html#a9346e4d53a9d7d686911ab772fc23387"> 40</a></span> <a class="code" href="classSHAKE.html#a9346e4d53a9d7d686911ab772fc23387">SHAKE::SHAKE</a>(<span class="keywordtype">size_t</span> capacity)</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  : finalized(false)</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  core.<a class="code" href="classKeccakCore.html#ab3c1905f2002e49aca085d6f0b5546f7">setCapacity</a>(capacity);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classSHAKE.html#a1729b9a96b71185166d68a2d98fb84e9"> 49</a></span> <a class="code" href="classSHAKE.html#a1729b9a96b71185166d68a2d98fb84e9">SHAKE::~SHAKE</a>()</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classSHAKE.html#a635b2475049541f73eaf577ed8e67cb7"> 53</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classSHAKE.html#a635b2475049541f73eaf577ed8e67cb7">SHAKE::blockSize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> core.<a class="code" href="classKeccakCore.html#a3742ed39151811b5d1c263c75ee5b20a">blockSize</a>();</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classSHAKE.html#af199eea3c22bb193638827163c2b23db"> 58</a></span> <span class="keywordtype">void</span> <a class="code" href="classSHAKE.html#af199eea3c22bb193638827163c2b23db">SHAKE::reset</a>()</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  core.<a class="code" href="classKeccakCore.html#a5a322eb7e3b5c1eaad127c9c6e6a529b">reset</a>();</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  finalized = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="classSHAKE.html#aa6f3a32427433aabe20adccb6994a4aa"> 64</a></span> <span class="keywordtype">void</span> <a class="code" href="classSHAKE.html#aa6f3a32427433aabe20adccb6994a4aa">SHAKE::update</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *data, <span class="keywordtype">size_t</span> len)</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (finalized)</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="classSHAKE.html#af199eea3c22bb193638827163c2b23db">reset</a>();</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  core.<a class="code" href="classKeccakCore.html#aaaa0355ccec0f469ac8eb577bdf853ed">update</a>(data, len);</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classSHAKE.html#ac3fe37617644e3498d40a86e846562fb"> 71</a></span> <span class="keywordtype">void</span> <a class="code" href="classSHAKE.html#ac3fe37617644e3498d40a86e846562fb">SHAKE::extend</a>(uint8_t *data, <span class="keywordtype">size_t</span> len)</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> {</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (!finalized) {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  core.<a class="code" href="classKeccakCore.html#a97852ee4381ced17ee6d21704cf0b4d7">pad</a>(0x1F);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  finalized = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  core.<a class="code" href="classKeccakCore.html#aad83ece853c0cc15fcab947fdcba924f">extract</a>(data, len);</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classSHAKE.html#a6621c9d1ffbf8c34780b901275ceb81f"> 80</a></span> <span class="keywordtype">void</span> <a class="code" href="classSHAKE.html#a6621c9d1ffbf8c34780b901275ceb81f">SHAKE::encrypt</a>(uint8_t *output, <span class="keyword">const</span> uint8_t *input, <span class="keywordtype">size_t</span> len)</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (!finalized) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  core.<a class="code" href="classKeccakCore.html#a97852ee4381ced17ee6d21704cf0b4d7">pad</a>(0x1F);</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  finalized = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  core.<a class="code" href="classKeccakCore.html#acaf5c13452003e6e2e7793939f62a123">encrypt</a>(output, input, len);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classSHAKE.html#ab86f52425c1d5b0e5c924b4f96121fe0"> 89</a></span> <span class="keywordtype">void</span> <a class="code" href="classSHAKE.html#ab86f52425c1d5b0e5c924b4f96121fe0">SHAKE::clear</a>()</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  core.<a class="code" href="classKeccakCore.html#aeff1df56e4a3103c99c1fe4307e60c66">clear</a>();</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  finalized = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> }</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="classSHAKE128.html#a1d08d5987802636fa24c6245ebbe4288"> 113</a></span> <a class="code" href="classSHAKE128.html#a1d08d5987802636fa24c6245ebbe4288">SHAKE128::~SHAKE128</a>()</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> {</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="classSHAKE256.html#a629a9817a524c1a7d273c7fca6d911c4"> 135</a></span> <a class="code" href="classSHAKE256.html#a629a9817a524c1a7d273c7fca6d911c4">SHAKE256::~SHAKE256</a>()</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> {</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> }</div>
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<div class="ttc" id="classSHAKE256_html_a629a9817a524c1a7d273c7fca6d911c4"><div class="ttname"><a href="classSHAKE256.html#a629a9817a524c1a7d273c7fca6d911c4">SHAKE256::~SHAKE256</a></div><div class="ttdeci">virtual ~SHAKE256()</div><div class="ttdoc">Destroys this SHAKE256 object after clearing all sensitive information. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00135">SHAKE.cpp:135</a></div></div>
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<div class="ttc" id="classKeccakCore_html_a3742ed39151811b5d1c263c75ee5b20a"><div class="ttname"><a href="classKeccakCore.html#a3742ed39151811b5d1c263c75ee5b20a">KeccakCore::blockSize</a></div><div class="ttdeci">size_t blockSize() const </div><div class="ttdoc">Returns the input block size for the sponge function in bytes. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8h_source.html#l00038">KeccakCore.h:38</a></div></div>
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<div class="ttc" id="classSHAKE_html_a6621c9d1ffbf8c34780b901275ceb81f"><div class="ttname"><a href="classSHAKE.html#a6621c9d1ffbf8c34780b901275ceb81f">SHAKE::encrypt</a></div><div class="ttdeci">void encrypt(uint8_t *output, const uint8_t *input, size_t len)</div><div class="ttdoc">Encrypts an input buffer with extendable output from this XOF. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00080">SHAKE.cpp:80</a></div></div>
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<div class="ttc" id="classKeccakCore_html_acaf5c13452003e6e2e7793939f62a123"><div class="ttname"><a href="classKeccakCore.html#acaf5c13452003e6e2e7793939f62a123">KeccakCore::encrypt</a></div><div class="ttdeci">void encrypt(void *output, const void *input, size_t size)</div><div class="ttdoc">Extracts data from the Keccak sponge function and uses it to encrypt a buffer. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00240">KeccakCore.cpp:240</a></div></div>
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<div class="ttc" id="classSHAKE_html_a9346e4d53a9d7d686911ab772fc23387"><div class="ttname"><a href="classSHAKE.html#a9346e4d53a9d7d686911ab772fc23387">SHAKE::SHAKE</a></div><div class="ttdeci">SHAKE(size_t capacity)</div><div class="ttdoc">Constructs a SHAKE object. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00040">SHAKE.cpp:40</a></div></div>
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<div class="ttc" id="classSHAKE_html_a635b2475049541f73eaf577ed8e67cb7"><div class="ttname"><a href="classSHAKE.html#a635b2475049541f73eaf577ed8e67cb7">SHAKE::blockSize</a></div><div class="ttdeci">size_t blockSize() const </div><div class="ttdoc">Size of the internal block used by the XOF algorithm, in bytes. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00053">SHAKE.cpp:53</a></div></div>
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<div class="ttc" id="classKeccakCore_html_ab3c1905f2002e49aca085d6f0b5546f7"><div class="ttname"><a href="classKeccakCore.html#ab3c1905f2002e49aca085d6f0b5546f7">KeccakCore::setCapacity</a></div><div class="ttdeci">void setCapacity(size_t capacity)</div><div class="ttdoc">Sets the capacity of the Keccak sponge function in bits. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00094">KeccakCore.cpp:94</a></div></div>
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<div class="ttc" id="classSHAKE_html_a1729b9a96b71185166d68a2d98fb84e9"><div class="ttname"><a href="classSHAKE.html#a1729b9a96b71185166d68a2d98fb84e9">SHAKE::~SHAKE</a></div><div class="ttdeci">virtual ~SHAKE()</div><div class="ttdoc">Destroys this SHAKE object after clearing all sensitive information. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00049">SHAKE.cpp:49</a></div></div>
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<div class="ttc" id="classKeccakCore_html_aad83ece853c0cc15fcab947fdcba924f"><div class="ttname"><a href="classKeccakCore.html#aad83ece853c0cc15fcab947fdcba924f">KeccakCore::extract</a></div><div class="ttdeci">void extract(void *data, size_t size)</div><div class="ttdoc">Extracts data from the Keccak sponge function. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00194">KeccakCore.cpp:194</a></div></div>
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<div class="ttc" id="classKeccakCore_html_a97852ee4381ced17ee6d21704cf0b4d7"><div class="ttname"><a href="classKeccakCore.html#a97852ee4381ced17ee6d21704cf0b4d7">KeccakCore::pad</a></div><div class="ttdeci">void pad(uint8_t tag)</div><div class="ttdoc">Pads the last block of input data to blockSize(). </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00167">KeccakCore.cpp:167</a></div></div>
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<div class="ttc" id="classSHAKE128_html_a1d08d5987802636fa24c6245ebbe4288"><div class="ttname"><a href="classSHAKE128.html#a1d08d5987802636fa24c6245ebbe4288">SHAKE128::~SHAKE128</a></div><div class="ttdeci">virtual ~SHAKE128()</div><div class="ttdoc">Destroys this SHAKE128 object after clearing all sensitive information. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00113">SHAKE.cpp:113</a></div></div>
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<div class="ttc" id="classSHAKE_html_af199eea3c22bb193638827163c2b23db"><div class="ttname"><a href="classSHAKE.html#af199eea3c22bb193638827163c2b23db">SHAKE::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets the XOF ready for a new session. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00058">SHAKE.cpp:58</a></div></div>
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<div class="ttc" id="classKeccakCore_html_aaaa0355ccec0f469ac8eb577bdf853ed"><div class="ttname"><a href="classKeccakCore.html#aaaa0355ccec0f469ac8eb577bdf853ed">KeccakCore::update</a></div><div class="ttdeci">void update(const void *data, size_t size)</div><div class="ttdoc">Updates the Keccak sponge function with more input data. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00133">KeccakCore.cpp:133</a></div></div>
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<div class="ttc" id="classKeccakCore_html_aeff1df56e4a3103c99c1fe4307e60c66"><div class="ttname"><a href="classKeccakCore.html#aeff1df56e4a3103c99c1fe4307e60c66">KeccakCore::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears all sensitive data from this object. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00275">KeccakCore.cpp:275</a></div></div>
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<div class="ttc" id="classSHAKE_html_aa6f3a32427433aabe20adccb6994a4aa"><div class="ttname"><a href="classSHAKE.html#aa6f3a32427433aabe20adccb6994a4aa">SHAKE::update</a></div><div class="ttdeci">void update(const void *data, size_t len)</div><div class="ttdoc">Updates the XOF with more data. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00064">SHAKE.cpp:64</a></div></div>
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<div class="ttc" id="classKeccakCore_html_a5a322eb7e3b5c1eaad127c9c6e6a529b"><div class="ttname"><a href="classKeccakCore.html#a5a322eb7e3b5c1eaad127c9c6e6a529b">KeccakCore::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets the Keccak sponge function ready for a new session. </div><div class="ttdef"><b>Definition:</b> <a href="KeccakCore_8cpp_source.html#l00114">KeccakCore.cpp:114</a></div></div>
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<div class="ttc" id="classSHAKE_html_ac3fe37617644e3498d40a86e846562fb"><div class="ttname"><a href="classSHAKE.html#ac3fe37617644e3498d40a86e846562fb">SHAKE::extend</a></div><div class="ttdeci">void extend(uint8_t *data, size_t len)</div><div class="ttdoc">Generates extendable output from this XOF. </div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00071">SHAKE.cpp:71</a></div></div>
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<div class="ttc" id="classSHAKE_html_ab86f52425c1d5b0e5c924b4f96121fe0"><div class="ttname"><a href="classSHAKE.html#ab86f52425c1d5b0e5c924b4f96121fe0">SHAKE::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears the hash state, removing all sensitive data, and then resets the XOF ready for a new session...</div><div class="ttdef"><b>Definition:</b> <a href="SHAKE_8cpp_source.html#l00089">SHAKE.cpp:89</a></div></div>
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