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<li class="navelem"><a class="el" href="dir_bc0718b08fb2015b8e59c47b2805f60c.html">libraries</a></li><li class="navelem"><a class="el" href="dir_e2ce51835550ba18edf07a8311722290.html">Crypto</a></li> </ul>
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<div class="title">GHASH.h</div> </div>
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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) 2015 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">#ifndef CRYPTO_GHASH_h</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="preprocessor">#define CRYPTO_GHASH_h</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <inttypes.h></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <stddef.h></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classGHASH.html"> 29</a></span> <span class="keyword">class </span><a class="code" href="classGHASH.html">GHASH</a></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="classGHASH.html#a3a1abd0f641bccd9b4aa1f40beb8dca3">GHASH</a>();</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="classGHASH.html#ae7f63a587adf1aa1ffcdc0a6e20584fd">~GHASH</a>();</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">void</span> <a class="code" href="classGHASH.html#a479a3e8c37e320bf99f54b95bf5f4c55">reset</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *key);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">void</span> <a class="code" href="classGHASH.html#a235edb14c6ed1ec55ddda595816ef1c7">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="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">void</span> <a class="code" href="classGHASH.html#ab221298ca69c9612bfbfd3dedcb28307">finalize</a>(<span class="keywordtype">void</span> *token, <span class="keywordtype">size_t</span> len);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">void</span> <a class="code" href="classGHASH.html#a8c38ee9313605f1d8b12dca7cd43e4ad">pad</a>();</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">void</span> <a class="code" href="classGHASH.html#a4b1ee789debf56f7f24807960ef0556e">clear</a>();</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> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">struct </span>{</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  uint32_t H[4];</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  uint32_t Y[4];</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  uint8_t posn;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  } state;</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> };</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> <span class="preprocessor">#endif</span></div>
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<div class="ttc" id="classGHASH_html_ab221298ca69c9612bfbfd3dedcb28307"><div class="ttname"><a href="classGHASH.html#ab221298ca69c9612bfbfd3dedcb28307">GHASH::finalize</a></div><div class="ttdeci">void finalize(void *token, size_t len)</div><div class="ttdoc">Finalizes the authentication process and returns the token. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00121">GHASH.cpp:121</a></div></div>
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<div class="ttc" id="classGHASH_html_a235edb14c6ed1ec55ddda595816ef1c7"><div class="ttname"><a href="classGHASH.html#a235edb14c6ed1ec55ddda595816ef1c7">GHASH::update</a></div><div class="ttdeci">void update(const void *data, size_t len)</div><div class="ttdoc">Updates the message authenticator with more data. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00085">GHASH.cpp:85</a></div></div>
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<div class="ttc" id="classGHASH_html_ae7f63a587adf1aa1ffcdc0a6e20584fd"><div class="ttname"><a href="classGHASH.html#ae7f63a587adf1aa1ffcdc0a6e20584fd">GHASH::~GHASH</a></div><div class="ttdeci">~GHASH()</div><div class="ttdoc">Destroys this GHASH message authenticator. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00055">GHASH.cpp:55</a></div></div>
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<div class="ttc" id="classGHASH_html_a8c38ee9313605f1d8b12dca7cd43e4ad"><div class="ttname"><a href="classGHASH.html#a8c38ee9313605f1d8b12dca7cd43e4ad">GHASH::pad</a></div><div class="ttdeci">void pad()</div><div class="ttdoc">Pads the input stream with zero bytes to a multiple of 16. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00137">GHASH.cpp:137</a></div></div>
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<div class="ttc" id="classGHASH_html"><div class="ttname"><a href="classGHASH.html">GHASH</a></div><div class="ttdoc">Implementation of the GHASH message authenticator. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8h_source.html#l00029">GHASH.h:29</a></div></div>
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<div class="ttc" id="classGHASH_html_a4b1ee789debf56f7f24807960ef0556e"><div class="ttname"><a href="classGHASH.html#a4b1ee789debf56f7f24807960ef0556e">GHASH::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears the authenticator's state, removing all sensitive data. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00150">GHASH.cpp:150</a></div></div>
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<div class="ttc" id="classGHASH_html_a3a1abd0f641bccd9b4aa1f40beb8dca3"><div class="ttname"><a href="classGHASH.html#a3a1abd0f641bccd9b4aa1f40beb8dca3">GHASH::GHASH</a></div><div class="ttdeci">GHASH()</div><div class="ttdoc">Constructs a new GHASH message authenticator. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00047">GHASH.cpp:47</a></div></div>
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<div class="ttc" id="classGHASH_html_a479a3e8c37e320bf99f54b95bf5f4c55"><div class="ttname"><a href="classGHASH.html#a479a3e8c37e320bf99f54b95bf5f4c55">GHASH::reset</a></div><div class="ttdeci">void reset(const void *key)</div><div class="ttdoc">Resets the GHASH message authenticator for a new session. </div><div class="ttdef"><b>Definition:</b> <a href="GHASH_8cpp_source.html#l00067">GHASH.cpp:67</a></div></div>
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