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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">ttmac.h</div> </div>
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<a href="ttmac_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">// ttmac.h - written and placed in the public domain by Kevin Springle</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"></span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">/// \file ttmac.h</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/// \brief Classes for the TTMAC message authentication code</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="preprocessor">#ifndef CRYPTOPP_TTMAC_H</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#define CRYPTOPP_TTMAC_H</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "<a class="code" href="seckey_8h.html">seckey.h</a>"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "iterhash.h"</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "<a class="code" href="secblock_8h.html">secblock.h</a>"</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> NAMESPACE_BEGIN(<a class="code" href="namespace_crypto_p_p.html">CryptoPP</a>)</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">/// \brief TTMAC message authentication code information</span></div><div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="class_t_t_m_a_c___base.html"> 16</a></span> <span class="comment"></span>class CRYPTOPP_NO_VTABLE <a class="code" href="class_t_t_m_a_c___base.html">TTMAC_Base</a> : public <a class="code" href="class_fixed_key_length.html">FixedKeyLength</a><20>, public <a class="code" href="class_iterated_hash.html">IteratedHash</a><word32, <a class="code" href="struct_enum_to_type.html">LittleEndian</a>, 64, <a class="code" href="class_message_authentication_code.html">MessageAuthenticationCode</a>></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keyword">static</span> std::string StaticAlgorithmName() {<span class="keywordflow">return</span> std::string(<span class="stringliteral">"Two-Track-MAC"</span>);}</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  CRYPTOPP_CONSTANT(DIGESTSIZE=20)</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="class_t_t_m_a_c___base.html#a78f01cddf3a38e595c2868c2cacd23ac"> 22</a></span>  unsigned <span class="keywordtype">int</span> <a class="code" href="namespace_name.html#ae065e5d1d16c399ad5404659e649bfec">DigestSize</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> DIGESTSIZE;};</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordtype">void</span> UncheckedSetKey(<span class="keyword">const</span> <span class="keywordtype">byte</span> *userKey, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> keylength, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &params);</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordtype">void</span> TruncatedFinal(<span class="keywordtype">byte</span> *mac, <span class="keywordtype">size_t</span> size);</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">protected</span>:</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> Transform (word32 *digest, <span class="keyword">const</span> word32 *X, <span class="keywordtype">bool</span> last);</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordtype">void</span> HashEndianCorrectedBlock(<span class="keyword">const</span> word32 *data) {Transform(m_digest, data, <span class="keyword">false</span>);}</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordtype">void</span> Init();</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  word32* StateBuf() {<span class="keywordflow">return</span> m_digest;}</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="class_fixed_size_sec_block.html">FixedSizeSecBlock<word32, 10></a> m_digest;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="class_fixed_size_sec_block.html">FixedSizeSecBlock<word32, 5></a> m_key;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> };</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/// \brief Two-Track-MAC message authentication code</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">/// \tparam T HashTransformation class</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">/// \details 160-bit MAC with 160-bit key</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">/// \sa MessageAuthenticationCode(), <a href="http://www.weidai.com/scan-mirror/mac.html#TTMAC">Two-Track-MAC</a></span></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="class_t_t_m_a_c.html"> 40</a></span> <span class="comment"></span>DOCUMENTED_TYPEDEF(<a class="code" href="class_message_authentication_code_final.html">MessageAuthenticationCodeFinal<TTMAC_Base></a>, <a class="code" href="class_t_t_m_a_c.html">TTMAC</a>)</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> NAMESPACE_END</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="namespace_name_html_ae065e5d1d16c399ad5404659e649bfec"><div class="ttname"><a href="namespace_name.html#ae065e5d1d16c399ad5404659e649bfec">Name::DigestSize</a></div><div class="ttdeci">const char * DigestSize()</div><div class="ttdoc">int, in bytes</div><div class="ttdef"><b>Definition:</b> <a href="argnames_8h_source.html#l00079">argnames.h:79</a></div></div>
<div class="ttc" id="class_message_authentication_code_html"><div class="ttname"><a href="class_message_authentication_code.html">MessageAuthenticationCode</a></div><div class="ttdoc">Interface for message authentication codes.</div><div class="ttdef"><b>Definition:</b> <a href="cryptlib_8h_source.html#l01245">cryptlib.h:1245</a></div></div>
<div class="ttc" id="class_fixed_key_length_html"><div class="ttname"><a href="class_fixed_key_length.html">FixedKeyLength</a></div><div class="ttdoc">Inherited by keyed algorithms with fixed key length.</div><div class="ttdef"><b>Definition:</b> <a href="seckey_8h_source.html#l00147">seckey.h:147</a></div></div>
<div class="ttc" id="class_t_t_m_a_c___base_html"><div class="ttname"><a href="class_t_t_m_a_c___base.html">TTMAC_Base</a></div><div class="ttdoc">TTMAC message authentication code information.</div><div class="ttdef"><b>Definition:</b> <a href="ttmac_8h_source.html#l00016">ttmac.h:16</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="class_message_authentication_code_final_html"><div class="ttname"><a href="class_message_authentication_code_final.html">MessageAuthenticationCodeFinal< TTMAC_Base ></a></div></div>
<div class="ttc" id="class_t_t_m_a_c_html"><div class="ttname"><a href="class_t_t_m_a_c.html">TTMAC</a></div><div class="ttdoc">Two-Track-MAC message authentication code.</div><div class="ttdef"><b>Definition:</b> <a href="ttmac_8h_source.html#l00040">ttmac.h:40</a></div></div>
<div class="ttc" id="secblock_8h_html"><div class="ttname"><a href="secblock_8h.html">secblock.h</a></div><div class="ttdoc">Classes and functions for secure memory allocations.</div></div>
<div class="ttc" id="seckey_8h_html"><div class="ttname"><a href="seckey_8h.html">seckey.h</a></div><div class="ttdoc">Classes and functions for implementing secret key algorithms.</div></div>
<div class="ttc" id="class_fixed_size_sec_block_html"><div class="ttname"><a href="class_fixed_size_sec_block.html">FixedSizeSecBlock< word32, 10 ></a></div></div>
<div class="ttc" id="class_iterated_hash_html"><div class="ttname"><a href="class_iterated_hash.html">IteratedHash</a></div><div class="ttdoc">Iterated hash base class.</div><div class="ttdef"><b>Definition:</b> <a href="iterhash_8h_source.html#l00112">iterhash.h:112</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>
<div class="ttc" id="class_name_value_pairs_html"><div class="ttname"><a href="class_name_value_pairs.html">NameValuePairs</a></div><div class="ttdoc">Interface for retrieving values given their names.</div><div class="ttdef"><b>Definition:</b> <a href="cryptlib_8h_source.html#l00290">cryptlib.h:290</a></div></div>
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