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<div class="title">chacha.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// chacha.cpp - written and placed in the public domain by Jeffrey Walton.</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Based on Wei Dai's Salsa20 and Bernstein's reference ChaCha</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// family implementation at http://cr.yp.to/chacha.html.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "<a class="code" href="pch_8h.html">pch.h</a>"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "<a class="code" href="chacha_8h.html">chacha.h</a>"</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="argnames_8h.html">argnames.h</a>"</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "<a class="code" href="misc_8h.html">misc.h</a>"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "<a class="code" href="cpu_8h.html">cpu.h</a>"</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> NAMESPACE_BEGIN(<a class="code" href="namespace_crypto_p_p.html">CryptoPP</a>)</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define CHACHA_QUARTER_ROUND(a,b,c,d) \</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"> a += b; d ^= a; d = rotlConstant<16,word32>(d); \</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor"> c += d; b ^= c; b = rotlConstant<12,word32>(b); \</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor"> a += b; d ^= a; d = rotlConstant<8,word32>(d); \</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor"> c += d; b ^= c; b = rotlConstant<7,word32>(b);</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> <span class="preprocessor">#if defined(CRYPTOPP_DEBUG) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keywordtype">void</span> ChaCha_TestInstantiations()</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <a class="code" href="class_symmetric_cipher_final.html">ChaCha8::Encryption</a> x1;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <a class="code" href="class_symmetric_cipher_final.html">ChaCha12::Encryption</a> x2;</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <a class="code" href="class_symmetric_cipher_final.html">ChaCha20::Encryption</a> x3;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> }</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#endif</span></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">template</span> <<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keywordtype">void</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::CipherSetKey</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &params, <span class="keyword">const</span> byte *key, <span class="keywordtype">size_t</span> length)</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>  CRYPTOPP_UNUSED(params);</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="trap_8h.html#adf3b392588bc94cbeae9f415a78c7b95">CRYPTOPP_ASSERT</a>(length == 16 || length == 32);</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">// "expand 16-byte k" or "expand 32-byte k"</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  m_state[0] = 0x61707865;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  m_state[1] = (length == 16) ? 0x3120646e : 0x3320646e;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  m_state[2] = (length == 16) ? 0x79622d36 : 0x79622d32;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  m_state[3] = 0x6b206574;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="class_get_block.html">GetBlock<word32, LittleEndian></a> get1(key);</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  get1(m_state[4])(m_state[5])(m_state[6])(m_state[7]);</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>  <a class="code" href="class_get_block.html">GetBlock<word32, LittleEndian></a> get2(key + ((length == 32) ? 16 : 0));</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  get2(m_state[8])(m_state[9])(m_state[10])(m_state[11]);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> }</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">template</span> <<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keywordtype">void</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::CipherResynchronize</a>(byte *keystreamBuffer, <span class="keyword">const</span> byte *<a class="code" href="namespace_name.html#a9b6839240a8bdf1f5bcbebf1866f4733">IV</a>, <span class="keywordtype">size_t</span> length)</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  CRYPTOPP_UNUSED(keystreamBuffer), CRYPTOPP_UNUSED(length);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="trap_8h.html#adf3b392588bc94cbeae9f415a78c7b95">CRYPTOPP_ASSERT</a>(length==8);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="class_get_block.html">GetBlock<word32, LittleEndian></a> <span class="keyword">get</span>(<a class="code" href="namespace_name.html#a9b6839240a8bdf1f5bcbebf1866f4733">IV</a>);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  m_state[12] = m_state[13] = 0;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">get</span>(m_state[14])(m_state[15]);</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> <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">void</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::SeekToIteration</a>(lword iterationCount)</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> {</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  CRYPTOPP_UNUSED(iterationCount);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">throw</span> <a class="code" href="class_not_implemented.html">NotImplemented</a>(std::string(<a class="code" href="struct_cha_cha___info.html">ChaCha_Info<R>::StaticAlgorithmName</a>()) + <span class="stringliteral">": SeekToIteration is not yet implemented"</span>);</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// TODO: these were Salsa20, and Wei re-arranged the state array for SSE2 operations.</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// If we can generate some out-of-band test vectors, then test and implement. Also</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// see the test vectors in salsa.txt and the use of Seek test argument.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// m_state[8] = (word32)iterationCount;</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// m_state[5] = (word32)SafeRightShift<32>(iterationCount);</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::GetAlignment</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword"></span>{</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#if CRYPTOPP_SSE2_ASM_AVAILABLE && 0</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (<a class="code" href="cpu_8h.html#a962fa16f6d3a8a518912b39c3ea84062">HasSSE2</a>())</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> 16;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> GetAlignmentOf<word32>();</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::GetOptimalBlockSize</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword"></span>{</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#if CRYPTOPP_SSE2_ASM_AVAILABLE && 0</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (<a class="code" href="cpu_8h.html#a962fa16f6d3a8a518912b39c3ea84062">HasSSE2</a>())</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> 4*BYTES_PER_ITERATION;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> BYTES_PER_ITERATION;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> R></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keywordtype">void</span> <a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<R>::OperateKeystream</a>(<a class="code" href="strciphr_8h.html#ab4a226527d2bd01ff19bfa14d0974227">KeystreamOperation</a> operation, byte *output, <span class="keyword">const</span> byte *input, <span class="keywordtype">size_t</span> iterationCount)</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  word32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">while</span> (iterationCount--)</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  {</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  x0 = m_state[0]; x1 = m_state[1]; x2 = m_state[2]; x3 = m_state[3];</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  x4 = m_state[4]; x5 = m_state[5]; x6 = m_state[6]; x7 = m_state[7];</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  x8 = m_state[8]; x9 = m_state[9]; x10 = m_state[10]; x11 = m_state[11];</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  x12 = m_state[12]; x13 = m_state[13]; x14 = m_state[14]; x15 = m_state[15];</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = static_cast<int>(ROUNDS); i > 0; i -= 2)</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  {</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  CHACHA_QUARTER_ROUND(x0, x4, x8, x12);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  CHACHA_QUARTER_ROUND(x1, x5, x9, x13);</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  CHACHA_QUARTER_ROUND(x2, x6, x10, x14);</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  CHACHA_QUARTER_ROUND(x3, x7, x11, x15);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  CHACHA_QUARTER_ROUND(x0, x5, x10, x15);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  CHACHA_QUARTER_ROUND(x1, x6, x11, x12);</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  CHACHA_QUARTER_ROUND(x2, x7, x8, x13);</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  CHACHA_QUARTER_ROUND(x3, x4, x9, x14);</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor"> #undef CHACHA_OUTPUT</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor"> #define CHACHA_OUTPUT(x){\</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 0, x0 + m_state[0]);\</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 1, x1 + m_state[1]);\</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 2, x2 + m_state[2]);\</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 3, x3 + m_state[3]);\</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 4, x4 + m_state[4]);\</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 5, x5 + m_state[5]);\</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 6, x6 + m_state[6]);\</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 7, x7 + m_state[7]);\</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 8, x8 + m_state[8]);\</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 9, x9 + m_state[9]);\</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 10, x10 + m_state[10]);\</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 11, x11 + m_state[11]);\</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 12, x12 + m_state[12]);\</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 13, x13 + m_state[13]);\</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 14, x14 + m_state[14]);\</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"> CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 15, x15 + m_state[15]);}</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#ifndef CRYPTOPP_DOXYGEN_PROCESSING</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="strciphr_8h.html#a4f82514b5ab874259ac783ff9b96c4e5">CRYPTOPP_KEYSTREAM_OUTPUT_SWITCH</a>(CHACHA_OUTPUT, BYTES_PER_ITERATION);</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  ++m_state[12];</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  m_state[13] += <span class="keyword">static_cast<</span>word32<span class="keyword">></span>(m_state[12] == 0);</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> }</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">template</span> <span class="keyword">class </span><a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<8></a>;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">template</span> <span class="keyword">class </span><a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<12></a>;</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">template</span> <span class="keyword">class </span><a class="code" href="class_cha_cha___policy.html">ChaCha_Policy<20></a>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> NAMESPACE_END</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div><div class="ttc" id="argnames_8h_html"><div class="ttname"><a href="argnames_8h.html">argnames.h</a></div><div class="ttdoc">Standard names for retrieving values by name when working with NameValuePairs. </div></div>
<div class="ttc" id="struct_cha_cha___info_html"><div class="ttname"><a href="struct_cha_cha___info.html">ChaCha_Info</a></div><div class="ttdoc">ChaCha stream cipher information. </div><div class="ttdef"><b>Definition:</b> <a href="chacha_8h_source.html#l00024">chacha.h:24</a></div></div>
<div class="ttc" id="misc_8h_html"><div class="ttname"><a href="misc_8h.html">misc.h</a></div><div class="ttdoc">Utility functions for the Crypto++ library. </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="strciphr_8h_html_a4f82514b5ab874259ac783ff9b96c4e5"><div class="ttname"><a href="strciphr_8h.html#a4f82514b5ab874259ac783ff9b96c4e5">CRYPTOPP_KEYSTREAM_OUTPUT_SWITCH</a></div><div class="ttdeci">#define CRYPTOPP_KEYSTREAM_OUTPUT_SWITCH(x, y)</div><div class="ttdoc">Helper macro to implement OperateKeystream. </div><div class="ttdef"><b>Definition:</b> <a href="strciphr_8h_source.html#l00230">strciphr.h:230</a></div></div>
<div class="ttc" id="class_not_implemented_html"><div class="ttname"><a href="class_not_implemented.html">NotImplemented</a></div><div class="ttdoc">A method was called which was not implemented. </div><div class="ttdef"><b>Definition:</b> <a href="cryptlib_8h_source.html#l00220">cryptlib.h:220</a></div></div>
<div class="ttc" id="class_cha_cha___policy_html"><div class="ttname"><a href="class_cha_cha___policy.html">ChaCha_Policy</a></div><div class="ttdoc">ChaCha stream cipher implementation. </div><div class="ttdef"><b>Definition:</b> <a href="chacha_8h_source.html#l00034">chacha.h:34</a></div></div>
<div class="ttc" id="pch_8h_html"><div class="ttname"><a href="pch_8h.html">pch.h</a></div><div class="ttdoc">Precompiled header file. </div></div>
<div class="ttc" id="trap_8h_html_adf3b392588bc94cbeae9f415a78c7b95"><div class="ttname"><a href="trap_8h.html#adf3b392588bc94cbeae9f415a78c7b95">CRYPTOPP_ASSERT</a></div><div class="ttdeci">#define CRYPTOPP_ASSERT(exp)</div><div class="ttdoc">Debugging and diagnostic assertion. </div><div class="ttdef"><b>Definition:</b> <a href="trap_8h_source.html#l00060">trap.h:60</a></div></div>
<div class="ttc" id="cpu_8h_html"><div class="ttname"><a href="cpu_8h.html">cpu.h</a></div><div class="ttdoc">Functions for CPU features and intrinsics. </div></div>
<div class="ttc" id="namespace_name_html_a9b6839240a8bdf1f5bcbebf1866f4733"><div class="ttname"><a href="namespace_name.html#a9b6839240a8bdf1f5bcbebf1866f4733">Name::IV</a></div><div class="ttdeci">const char * IV()</div><div class="ttdoc">ConstByteArrayParameter, also accepts const byte * for backwards compatibility. </div><div class="ttdef"><b>Definition:</b> <a href="argnames_8h_source.html#l00021">argnames.h:21</a></div></div>
<div class="ttc" id="cpu_8h_html_a962fa16f6d3a8a518912b39c3ea84062"><div class="ttname"><a href="cpu_8h.html#a962fa16f6d3a8a518912b39c3ea84062">HasSSE2</a></div><div class="ttdeci">bool HasSSE2()</div><div class="ttdoc">Determines SSE2 availability. </div><div class="ttdef"><b>Definition:</b> <a href="cpu_8h_source.html#l00114">cpu.h:114</a></div></div>
<div class="ttc" id="class_get_block_html"><div class="ttname"><a href="class_get_block.html">GetBlock</a></div><div class="ttdoc">Access a block of memory. </div><div class="ttdef"><b>Definition:</b> <a href="misc_8h_source.html#l02324">misc.h:2324</a></div></div>
<div class="ttc" id="strciphr_8h_html_ab4a226527d2bd01ff19bfa14d0974227"><div class="ttname"><a href="strciphr_8h.html#ab4a226527d2bd01ff19bfa14d0974227">KeystreamOperation</a></div><div class="ttdeci">KeystreamOperation</div><div class="ttdoc">Keystream operation flags. </div><div class="ttdef"><b>Definition:</b> <a href="strciphr_8h_source.html#l00088">strciphr.h:88</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_symmetric_cipher_final_html"><div class="ttname"><a href="class_symmetric_cipher_final.html">SymmetricCipherFinal</a></div><div class="ttdoc">SymmetricCipher implementation. </div><div class="ttdef"><b>Definition:</b> <a href="strciphr_8h_source.html#l00571">strciphr.h:571</a></div></div>
<div class="ttc" id="chacha_8h_html"><div class="ttname"><a href="chacha_8h.html">chacha.h</a></div><div class="ttdoc">Classes for ChaCha8, ChaCha12 and ChaCha20 stream ciphers. </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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