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<div id="projectname">Crypto++
 <span id="projectnumber">7.0</span>
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<div id="projectbrief">Free C++ class library of cryptographic schemes</div>
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<div class="title">sm3.h</div> </div>
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<a href="sm3_8h.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">// sm3.h - written and placed in the public domain by Jeffrey Walton and Han Lulu</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Based on the specification provided by Sean Shen and Xiaodong Lee.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Based on code by Krzysztof Kwiatkowski and Jack Lloyd.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Also see https://tools.ietf.org/html/draft-shen-sm3-hash.</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">/// \file sm3.h</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">/// \brief Classes for the SM3 hash function</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">/// \details SM3 is a hash function designed by Xiaoyun Wang, et al. The hash is part of the</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">/// Chinese State Cryptography Administration portfolio.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">/// \sa <A HREF="https://tools.ietf.org/html/draft-shen-sm3-hash">SM3 Hash Function</A> and</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">/// <A HREF="http://github.com/guanzhi/GmSSL">Reference implementation using OpenSSL</A>.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">/// \since Crypto++ 6.0</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#ifndef CRYPTOPP_SM3_H</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#define CRYPTOPP_SM3_H</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "iterhash.h"</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> NAMESPACE_BEGIN(<a class="code" href="namespace_crypto_p_p.html">CryptoPP</a>)</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">/// \brief SM3 hash function</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"></span><span class="comment">/// \details SM3 is a hash function designed by Xiaoyun Wang, et al. The hash is part of the</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span><span class="comment">/// Chinese State Cryptography Administration portfolio.</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"></span><span class="comment">/// \sa <A HREF="https://tools.ietf.org/html/draft-shen-sm3-hash">SM3 Hash Function</A></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"></span><span class="comment">/// \since Crypto++ 6.0</span></div><div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="class_s_m3.html"> 27</a></span> <span class="comment"></span>class <a class="code" href="class_s_m3.html">SM3</a> : public <a class="code" href="class_iterated_hash_with_static_transform.html">IteratedHashWithStaticTransform</a><word32, <a class="code" href="struct_enum_to_type.html">BigEndian</a>, 64, 32, <a class="code" href="class_s_m3.html">SM3</a>, 32, true></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">public</span>:<span class="comment"></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> /// \brief Initialize state array</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> /// \param state the state of the hash</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> /// \details InitState sets a state array to SHA256 initial values</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> /// \details Hashes which derive from IteratedHashWithStaticTransform provide static</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> /// member functions InitState() and Transform(). External classes, like SEAL and MDC,</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> /// can initialize state with a user provided key and operate the hash on the data</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> /// with the user supplied state.</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">void</span> InitState(HashWordType *state);</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> /// \brief Operate the hash</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> /// \param digest the state of the hash</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> /// \param data the data to be digested</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// \details Transform() operates the hash on <tt>data</tt>. When the call is invoked</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> /// <tt>digest</tt> holds initial or current state. Upon return <tt>digest</tt> holds</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> /// the hash or updated state.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// \details Hashes which derive from IteratedHashWithStaticTransform provide static</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> /// member functions InitState() and Transform(). External classes, like SEAL and MDC,</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> /// can initialize state with a user provided key and operate the hash on the data</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> /// with the user supplied state.</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">void</span> Transform(HashWordType *digest, <span class="keyword">const</span> HashWordType *data);</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> /// \brief The algorithm name</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> /// \returns C-style string "SM3"</span></div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="class_s_m3.html#aae78fb0b0ad27642845e529ed479ba6a"> 53</a></span> <span class="comment"></span> CRYPTOPP_STATIC_CONSTEXPR <span class="keyword">const</span> <span class="keywordtype">char</span>* StaticAlgorithmName() { <span class="keywordflow">return</span> <span class="stringliteral">"SM3"</span>; }</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">protected</span>:</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">size_t</span> HashMultipleBlocks(<span class="keyword">const</span> HashWordType *input, <span class="keywordtype">size_t</span> length);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> };</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> NAMESPACE_END</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#endif // CRYPTOPP_SM3_H</span></div><div class="ttc" id="class_iterated_hash_with_static_transform_html"><div class="ttname"><a href="class_iterated_hash_with_static_transform.html">IteratedHashWithStaticTransform</a></div><div class="ttdoc">Iterated hash with a static transformation function. </div><div class="ttdef"><b>Definition:</b> <a href="iterhash_8h_source.html#l00160">iterhash.h:160</a></div></div>
<div class="ttc" id="struct_enum_to_type_html"><div class="ttname"><a href="struct_enum_to_type.html">EnumToType</a></div><div class="ttdoc">Converts an enumeration to a type suitable for use as a template parameter. </div><div class="ttdef"><b>Definition:</b> <a href="cryptlib_8h_source.html#l00132">cryptlib.h:132</a></div></div>
<div class="ttc" id="config_8h_html"><div class="ttname"><a href="config_8h.html">config.h</a></div><div class="ttdoc">Library configuration file. </div></div>
<div class="ttc" id="class_s_m3_html"><div class="ttname"><a href="class_s_m3.html">SM3</a></div><div class="ttdoc">SM3 hash function. </div><div class="ttdef"><b>Definition:</b> <a href="sm3_8h_source.html#l00027">sm3.h:27</a></div></div>
<div class="ttc" id="namespace_crypto_p_p_html"><div class="ttname"><a href="namespace_crypto_p_p.html">CryptoPP</a></div><div class="ttdoc">Crypto++ library namespace. </div></div>
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