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   <div id="projectname">Crypto++
   &#160;<span id="projectnumber">8.2</span>
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   <div id="projectbrief">Free&nbsp;C&#43;&#43;&nbsp;class&nbsp;library&nbsp;of&nbsp;cryptographic&nbsp;schemes</div>
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<div class="title">donna_sse.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// donna_sse.h - written and placed in public domain by Jeffrey Walton</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">//               Crypto++ specific implementation wrapped around Andrew</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//               Moon&#39;s public domain curve25519-donna and ed25519-donna,</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//               https://github.com/floodyberry/curve25519-donna and</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//               https://github.com/floodyberry/ed25519-donna.</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// This source file multiplexes two different repos using namespaces. This</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// was a little easier from a project management standpoint. We only need</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// two files per architecture at the expense of namespaces and bloat.</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#ifndef CRYPTOPP_DONNA_SSE_H</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#define CRYPTOPP_DONNA_SSE_H</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#ifndef CRYPTOPP_DOXYGEN_PROCESSING</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="config_8h.html">config.h</a>&quot;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;emmintrin.h&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;NAMESPACE_BEGIN(<a class="code" href="namespace_crypto_p_p.html">CryptoPP</a>)</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;NAMESPACE_BEGIN(Donna)</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;NAMESPACE_BEGIN(ArchSSE)</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">using</span> CryptoPP::byte;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">using</span> CryptoPP::word32;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">typedef</span> __m128i xmmi;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#define ALIGN(n) CRYPTOPP_ALIGN_DATA(n)</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">typedef</span> <span class="keyword">union </span>packedelem8_t {</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    byte u[16];</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    xmmi v;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;} packedelem8;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">typedef</span> <span class="keyword">union </span>packedelem32_t {</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    word32 u[4];</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    xmmi v;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;} packedelem32;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">typedef</span> <span class="keyword">union </span>packedelem64_t {</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    word64 u[2];</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    xmmi v;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;} packedelem64;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">/* 10 elements + an extra 2 to fit in 3 xmm registers */</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">typedef</span> word32 bignum25519[12];</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keyword">typedef</span> packedelem32 packed32bignum25519[5];</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">typedef</span> packedelem64 packed64bignum25519[10];</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keyword">const</span> word32 reduce_mask_26 = (1 &lt;&lt; 26) - 1;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">const</span> word32 reduce_mask_25 = (1 &lt;&lt; 25) - 1;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">const</span> packedelem32 sse2_bot32bitmask = {{0xffffffff, 0x00000000, 0xffffffff, 0x00000000}};</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">const</span> packedelem32 sse2_top32bitmask = {{0x00000000, 0xffffffff, 0x00000000, 0xffffffff}};</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="keyword">const</span> packedelem32 sse2_top64bitmask = {{0x00000000, 0x00000000, 0xffffffff, 0xffffffff}};</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="keyword">const</span> packedelem32 sse2_bot64bitmask = {{0xffffffff, 0xffffffff, 0x00000000, 0x00000000}};</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">/* reduction masks */</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">const</span> packedelem64 packedmask26 = {{0x03ffffff, 0x03ffffff}};</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">const</span> packedelem64 packedmask25 = {{0x01ffffff, 0x01ffffff}};</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="keyword">const</span> packedelem32 packedmask2625 = {{0x3ffffff,0,0x1ffffff,0}};</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="keyword">const</span> packedelem32 packedmask26262626 = {{0x03ffffff, 0x03ffffff, 0x03ffffff, 0x03ffffff}};</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">const</span> packedelem32 packedmask25252525 = {{0x01ffffff, 0x01ffffff, 0x01ffffff, 0x01ffffff}};</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">/* multipliers */</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="keyword">const</span> packedelem64 packednineteen = {{19, 19}};</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="keyword">const</span> packedelem64 packednineteenone = {{19, 1}};</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="keyword">const</span> packedelem64 packedthirtyeight = {{38, 38}};</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="keyword">const</span> packedelem64 packed3819 = {{19*2,19}};</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="keyword">const</span> packedelem64 packed9638 = {{19*4,19*2}};</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">/* 121666,121665 */</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="keyword">const</span> packedelem64 packed121666121665 = {{121666, 121665}};</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">/* 2*(2^255 - 19) = 0 mod p */</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="keyword">const</span> packedelem32 packed2p0 = {{0x7ffffda,0x3fffffe,0x7fffffe,0x3fffffe}};</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keyword">const</span> packedelem32 packed2p1 = {{0x7fffffe,0x3fffffe,0x7fffffe,0x3fffffe}};</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="keyword">const</span> packedelem32 packed2p2 = {{0x7fffffe,0x3fffffe,0x0000000,0x0000000}};</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keyword">const</span> packedelem32 packed32zeromodp0 = {{0x7ffffda,0x7ffffda,0x3fffffe,0x3fffffe}};</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="keyword">const</span> packedelem32 packed32zeromodp1 = {{0x7fffffe,0x7fffffe,0x3fffffe,0x3fffffe}};</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;NAMESPACE_END  <span class="comment">// ArchSSE</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;NAMESPACE_END  <span class="comment">// Donna</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;NAMESPACE_END  <span class="comment">// CryptoPP</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">#endif  // CRYPTOPP_DOXYGEN_PROCESSING</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor">#endif  // CRYPTOPP_DONNA_SSE_H</span></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="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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