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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">OMAC.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) 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">#ifndef CRYPTO_OMAC_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_OMAC_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 "BlockCipher.h"</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="classOMAC.html"> 28</a></span> <span class="keyword">class </span><a class="code" href="classOMAC.html">OMAC</a></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="classOMAC.html#ae84365423cef3f769464489848942559">OMAC</a>();</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="classOMAC.html#a6bb2222c997608ec68b25831da965e8f">~OMAC</a>();</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
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<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classOMAC.html#abca82def496c6c6ab1ce5e5a958ec34a"> 34</a></span>  <a class="code" href="classBlockCipher.html">BlockCipher</a> *<a class="code" href="classOMAC.html#abca82def496c6c6ab1ce5e5a958ec34a">blockCipher</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _blockCipher; }</div>
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<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classOMAC.html#a8ae86bc629cca60cebb995d092ba06b4"> 35</a></span>  <span class="keywordtype">void</span> <a class="code" href="classOMAC.html#a8ae86bc629cca60cebb995d092ba06b4">setBlockCipher</a>(<a class="code" href="classBlockCipher.html">BlockCipher</a> *cipher) { _blockCipher = cipher; }</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </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="classOMAC.html#a0274138725ddf6240c030574bae3975c">initFirst</a>(uint8_t omac[16]);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">void</span> <a class="code" href="classOMAC.html#ad496c7d2de4f22fd4192345003e75ee5">initNext</a>(uint8_t omac[16], uint8_t tag);</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="classOMAC.html#a6692d7f37dd097fdfdd2b198aa0d9cde">update</a>(uint8_t omac[16], <span class="keyword">const</span> uint8_t *data, <span class="keywordtype">size_t</span> size);</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">void</span> <a class="code" href="classOMAC.html#ae4ccdaee764df779f7ae0c7433078b3e">finalize</a>(uint8_t omac[16]);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">void</span> <a class="code" href="classOMAC.html#a072715dbda39dc9c360cfcaab31d6aa7">clear</a>();</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="classBlockCipher.html">BlockCipher</a> *_blockCipher;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  uint32_t b[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> };</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> <span class="preprocessor">#endif</span></div>
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<div class="ttc" id="classOMAC_html_a072715dbda39dc9c360cfcaab31d6aa7"><div class="ttname"><a href="classOMAC.html#a072715dbda39dc9c360cfcaab31d6aa7">OMAC::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears all security-sensitive state from this object. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00197">OMAC.cpp:197</a></div></div>
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<div class="ttc" id="classOMAC_html"><div class="ttname"><a href="classOMAC.html">OMAC</a></div><div class="ttdoc">Implementation of the OMAC message authenticator. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8h_source.html#l00028">OMAC.h:28</a></div></div>
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<div class="ttc" id="classOMAC_html_ae4ccdaee764df779f7ae0c7433078b3e"><div class="ttname"><a href="classOMAC.html#ae4ccdaee764df779f7ae0c7433078b3e">OMAC::finalize</a></div><div class="ttdeci">void finalize(uint8_t omac[16])</div><div class="ttdoc">Finalises an OMAC hashing context. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00172">OMAC.cpp:172</a></div></div>
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<div class="ttc" id="classOMAC_html_a6bb2222c997608ec68b25831da965e8f"><div class="ttname"><a href="classOMAC.html#a6bb2222c997608ec68b25831da965e8f">OMAC::~OMAC</a></div><div class="ttdeci">~OMAC()</div><div class="ttdoc">Destroys this OMAC object. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00059">OMAC.cpp:59</a></div></div>
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<div class="ttc" id="classBlockCipher_html"><div class="ttname"><a href="classBlockCipher.html">BlockCipher</a></div><div class="ttdoc">Abstract base class for block ciphers. </div><div class="ttdef"><b>Definition:</b> <a href="BlockCipher_8h_source.html#l00029">BlockCipher.h:29</a></div></div>
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<div class="ttc" id="classOMAC_html_a8ae86bc629cca60cebb995d092ba06b4"><div class="ttname"><a href="classOMAC.html#a8ae86bc629cca60cebb995d092ba06b4">OMAC::setBlockCipher</a></div><div class="ttdeci">void setBlockCipher(BlockCipher *cipher)</div><div class="ttdoc">Sets the block cipher to use for this OMAC object. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8h_source.html#l00035">OMAC.h:35</a></div></div>
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<div class="ttc" id="classOMAC_html_ad496c7d2de4f22fd4192345003e75ee5"><div class="ttname"><a href="classOMAC.html#ad496c7d2de4f22fd4192345003e75ee5">OMAC::initNext</a></div><div class="ttdeci">void initNext(uint8_t omac[16], uint8_t tag)</div><div class="ttdoc">Initialises or restarts an OMAC hashing context. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00127">OMAC.cpp:127</a></div></div>
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<div class="ttc" id="classOMAC_html_a6692d7f37dd097fdfdd2b198aa0d9cde"><div class="ttname"><a href="classOMAC.html#a6692d7f37dd097fdfdd2b198aa0d9cde">OMAC::update</a></div><div class="ttdeci">void update(uint8_t omac[16], const uint8_t *data, size_t size)</div><div class="ttdoc">Updates an OMAC hashing context with more data. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00143">OMAC.cpp:143</a></div></div>
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<div class="ttc" id="classOMAC_html_ae84365423cef3f769464489848942559"><div class="ttname"><a href="classOMAC.html#ae84365423cef3f769464489848942559">OMAC::OMAC</a></div><div class="ttdeci">OMAC()</div><div class="ttdoc">Constructs a new OMAC object. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00048">OMAC.cpp:48</a></div></div>
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<div class="ttc" id="classOMAC_html_abca82def496c6c6ab1ce5e5a958ec34a"><div class="ttname"><a href="classOMAC.html#abca82def496c6c6ab1ce5e5a958ec34a">OMAC::blockCipher</a></div><div class="ttdeci">BlockCipher * blockCipher() const </div><div class="ttdoc">Gets the block cipher that is in use for this OMAC object. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8h_source.html#l00034">OMAC.h:34</a></div></div>
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<div class="ttc" id="classOMAC_html_a0274138725ddf6240c030574bae3975c"><div class="ttname"><a href="classOMAC.html#a0274138725ddf6240c030574bae3975c">OMAC::initFirst</a></div><div class="ttdeci">void initFirst(uint8_t omac[16])</div><div class="ttdoc">Initialises the first OMAC hashing context and creates the B value. </div><div class="ttdef"><b>Definition:</b> <a href="OMAC_8cpp_source.html#l00101">OMAC.cpp:101</a></div></div>
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