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<div class="title">BLAKE2b.cpp</div> </div>
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<div class="contents">
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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) 2015 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">#include "BLAKE2b.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "Crypto.h"</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "utility/EndianUtil.h"</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "utility/RotateUtil.h"</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "utility/ProgMemUtil.h"</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <string.h></span></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="l00075"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a19b3b751809905a5587468f0d6c666ff"> 75</a></span> <a class="code" href="classBLAKE2b.html#a19b3b751809905a5587468f0d6c666ff">BLAKE2b::BLAKE2b</a>()</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">reset</a>();</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#ad0287d7284000ff236153e6afa0130f1"> 84</a></span> <a class="code" href="classBLAKE2b.html#ad0287d7284000ff236153e6afa0130f1">BLAKE2b::~BLAKE2b</a>()</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  clean(state);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a7555de16f6918ab820170a7ed3098c89"> 89</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classBLAKE2b.html#a7555de16f6918ab820170a7ed3098c89">BLAKE2b::hashSize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> 64;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
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<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#abec1b2320c3afaed12a29cf081b95fe2"> 94</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classBLAKE2b.html#abec1b2320c3afaed12a29cf081b95fe2">BLAKE2b::blockSize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> 128;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// Initialization vectors for BLAKE2b.</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#define BLAKE2b_IV0 0x6a09e667f3bcc908ULL</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV1 0xbb67ae8584caa73bULL</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV2 0x3c6ef372fe94f82bULL</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV3 0xa54ff53a5f1d36f1ULL</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV4 0x510e527fade682d1ULL</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV5 0x9b05688c2b3e6c1fULL</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV6 0x1f83d9abfb41bd6bULL</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"></span><span class="preprocessor">#define BLAKE2b_IV7 0x5be0cd19137e2179ULL</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a"> 109</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">BLAKE2b::reset</a>()</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  state.h[0] = BLAKE2b_IV0 ^ 0x01010040; <span class="comment">// Default output length of 64.</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  state.h[1] = BLAKE2b_IV1;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  state.h[2] = BLAKE2b_IV2;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  state.h[3] = BLAKE2b_IV3;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  state.h[4] = BLAKE2b_IV4;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  state.h[5] = BLAKE2b_IV5;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  state.h[6] = BLAKE2b_IV6;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  state.h[7] = BLAKE2b_IV7;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  state.chunkSize = 0;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  state.lengthLow = 0;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  state.lengthHigh = 0;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> }</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a9afd8ec05ccfa08a922de74461e45387"> 131</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">BLAKE2b::reset</a>(uint8_t outputLength)</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span> (outputLength < 1)</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  outputLength = 1;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (outputLength > 64)</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  outputLength = 64;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  state.h[0] = BLAKE2b_IV0 ^ 0x01010000 ^ outputLength;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  state.h[1] = BLAKE2b_IV1;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  state.h[2] = BLAKE2b_IV2;</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  state.h[3] = BLAKE2b_IV3;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  state.h[4] = BLAKE2b_IV4;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  state.h[5] = BLAKE2b_IV5;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  state.h[6] = BLAKE2b_IV6;</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  state.h[7] = BLAKE2b_IV7;</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  state.chunkSize = 0;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  state.lengthLow = 0;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  state.lengthHigh = 0;</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
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<div class="line"><a name="l00162"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a9dec672b9e900e92cfcfe90cfcef43f4"> 162</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">BLAKE2b::reset</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *key, <span class="keywordtype">size_t</span> keyLen, uint8_t outputLength)</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> {</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (keyLen > 64)</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  keyLen = 64;</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> (outputLength < 1)</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  outputLength = 1;</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (outputLength > 64)</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  outputLength = 64;</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  state.h[0] = BLAKE2b_IV0 ^ 0x01010000 ^ (keyLen << 8) ^ outputLength;</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  state.h[1] = BLAKE2b_IV1;</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  state.h[2] = BLAKE2b_IV2;</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  state.h[3] = BLAKE2b_IV3;</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  state.h[4] = BLAKE2b_IV4;</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  state.h[5] = BLAKE2b_IV5;</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  state.h[6] = BLAKE2b_IV6;</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  state.h[7] = BLAKE2b_IV7;</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">if</span> (keyLen > 0) {</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// Set the first block to the key and pad with zeroes.</span></div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  memcpy(state.m, key, keyLen);</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  memset(((uint8_t *)state.m) + keyLen, 0, 128 - keyLen);</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  state.chunkSize = 128;</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  state.lengthLow = 128;</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// No key. The first data block is the first hashed block.</span></div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  state.chunkSize = 0;</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  state.lengthLow = 0;</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  }</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  state.lengthHigh = 0;</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> }</div>
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|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div>
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<div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a468e48c66ce1738e11c922d133135069"> 192</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a468e48c66ce1738e11c922d133135069">BLAKE2b::update</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *data, <span class="keywordtype">size_t</span> len)</div>
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|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> {</div>
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|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// Break the input up into 1024-bit chunks and process each in turn.</span></div>
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|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">const</span> uint8_t *d = (<span class="keyword">const</span> uint8_t *)data;</div>
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|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">while</span> (len > 0) {</div>
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|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span> (state.chunkSize == 128) {</div>
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|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="comment">// Previous chunk was full and we know that it wasn't the</span></div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// last chunk, so we can process it now with f0 set to zero.</span></div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  processChunk(0);</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  state.chunkSize = 0;</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  uint8_t size = 128 - state.chunkSize;</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (size > len)</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  size = len;</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  memcpy(((uint8_t *)state.m) + state.chunkSize, d, size);</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  state.chunkSize += size;</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  uint64_t temp = state.lengthLow;</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  state.lengthLow += size;</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> (state.lengthLow < temp)</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  ++state.lengthHigh;</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  len -= size;</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  d += size;</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> }</div>
|
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
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<div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a0cd8146b7868bd0f4c24a3856f106d17"> 217</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a0cd8146b7868bd0f4c24a3856f106d17">BLAKE2b::finalize</a>(<span class="keywordtype">void</span> *hash, <span class="keywordtype">size_t</span> len)</div>
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|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> {</div>
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|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// Pad the last chunk and hash it with f0 set to all-ones.</span></div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  memset(((uint8_t *)state.m) + state.chunkSize, 0, 128 - state.chunkSize);</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  processChunk(0xFFFFFFFFFFFFFFFFULL);</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="comment">// Convert the hash into little-endian in the message buffer.</span></div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">for</span> (uint8_t posn = 0; posn < 8; ++posn)</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  state.m[posn] = htole64(state.h[posn]);</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// Copy the hash to the caller's return buffer.</span></div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">if</span> (len > 64)</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  len = 64;</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  memcpy(hash, state.m, len);</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> }</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a21623759bd381285ebf7e75a00c9c8a9"> 233</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a21623759bd381285ebf7e75a00c9c8a9">BLAKE2b::clear</a>()</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> {</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  clean(state);</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">reset</a>();</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> }</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#acb1ca4081c509d1c34b3aee465cd4494"> 239</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#acb1ca4081c509d1c34b3aee465cd4494">BLAKE2b::resetHMAC</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *key, <span class="keywordtype">size_t</span> keyLen)</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> {</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="classHash.html#ab6f40c9af91dc3d738d9fcce59af63cc">formatHMACKey</a>(state.m, key, keyLen, 0x36);</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  state.lengthLow += 128;</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  processChunk(0);</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="classBLAKE2b.html#a29fafbba26e3c1d896b4d4c428f7d52a"> 246</a></span> <span class="keywordtype">void</span> <a class="code" href="classBLAKE2b.html#a29fafbba26e3c1d896b4d4c428f7d52a">BLAKE2b::finalizeHMAC</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *key, <span class="keywordtype">size_t</span> keyLen, <span class="keywordtype">void</span> *hash, <span class="keywordtype">size_t</span> hashLen)</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> {</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  uint8_t temp[64];</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <a class="code" href="classBLAKE2b.html#a0cd8146b7868bd0f4c24a3856f106d17">finalize</a>(temp, <span class="keyword">sizeof</span>(temp));</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="classHash.html#ab6f40c9af91dc3d738d9fcce59af63cc">formatHMACKey</a>(state.m, key, keyLen, 0x5C);</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  state.lengthLow += 128;</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  processChunk(0);</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="classBLAKE2b.html#a468e48c66ce1738e11c922d133135069">update</a>(temp, <span class="keyword">sizeof</span>(temp));</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <a class="code" href="classBLAKE2b.html#a0cd8146b7868bd0f4c24a3856f106d17">finalize</a>(hash, hashLen);</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  clean(temp);</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
|
|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// Permutation on the message input state for BLAKE2b.</span></div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t sigma[12][16] PROGMEM = {</div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  {14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  {11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  {12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},</div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  {13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  {10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0},</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},</div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  {14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> };</div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment">// Perform a BLAKE2b quarter round operation.</span></div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="preprocessor">#define quarterRound(a, b, c, d, i) \</span></div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="preprocessor"> do { \</span></div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="preprocessor"> uint64_t _b = (b); \</span></div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="preprocessor"> uint64_t _a = (a) + _b + state.m[pgm_read_byte(&(sigma[index][2 * (i)]))]; \</span></div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="preprocessor"> uint64_t _d = rightRotate32_64((d) ^ _a); \</span></div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor"> uint64_t _c = (c) + _d; \</span></div>
|
|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="preprocessor"> _b = rightRotate24_64(_b ^ _c); \</span></div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="preprocessor"> _a += _b + state.m[pgm_read_byte(&(sigma[index][2 * (i) + 1]))]; \</span></div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="preprocessor"> (d) = _d = rightRotate16_64(_d ^ _a); \</span></div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor"> _c += _d; \</span></div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="preprocessor"> (a) = _a; \</span></div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="preprocessor"> (b) = rightRotate63_64(_b ^ _c); \</span></div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="preprocessor"> (c) = _c; \</span></div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor"> } while (0)</span></div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="preprocessor"></span></div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="keywordtype">void</span> BLAKE2b::processChunk(uint64_t f0)</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> {</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  uint8_t index;</div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  uint64_t v[16];</div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// Byte-swap the message buffer into little-endian if necessary.</span></div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="preprocessor">#if !defined(CRYPTO_LITTLE_ENDIAN)</span></div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="preprocessor"></span> <span class="keywordflow">for</span> (index = 0; index < 16; ++index)</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  state.m[index] = le64toh(state.m[index]);</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor">#endif</span></div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="preprocessor"></span></div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">// Format the block to be hashed.</span></div>
|
|
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  memcpy(v, state.h, <span class="keyword">sizeof</span>(state.h));</div>
|
|
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  v[8] = BLAKE2b_IV0;</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  v[9] = BLAKE2b_IV1;</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  v[10] = BLAKE2b_IV2;</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  v[11] = BLAKE2b_IV3;</div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  v[12] = BLAKE2b_IV4 ^ state.lengthLow;</div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  v[13] = BLAKE2b_IV5 ^ state.lengthHigh;</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  v[14] = BLAKE2b_IV6 ^ f0;</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  v[15] = BLAKE2b_IV7;</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> </div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="comment">// Perform the 12 BLAKE2b rounds.</span></div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">for</span> (index = 0; index < 12; ++index) {</div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">// Column round.</span></div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  quarterRound(v[0], v[4], v[8], v[12], 0);</div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  quarterRound(v[1], v[5], v[9], v[13], 1);</div>
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<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  quarterRound(v[2], v[6], v[10], v[14], 2);</div>
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<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  quarterRound(v[3], v[7], v[11], v[15], 3);</div>
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<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div>
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<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="comment">// Diagonal round.</span></div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  quarterRound(v[0], v[5], v[10], v[15], 4);</div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  quarterRound(v[1], v[6], v[11], v[12], 5);</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  quarterRound(v[2], v[7], v[8], v[13], 6);</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  quarterRound(v[3], v[4], v[9], v[14], 7);</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// Combine the new and old hash values.</span></div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">for</span> (index = 0; index < 8; ++index)</div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  state.h[index] ^= (v[index] ^ v[index + 8]);</div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> }</div>
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<div class="ttc" id="classBLAKE2b_html_a0cd8146b7868bd0f4c24a3856f106d17"><div class="ttname"><a href="classBLAKE2b.html#a0cd8146b7868bd0f4c24a3856f106d17">BLAKE2b::finalize</a></div><div class="ttdeci">void finalize(void *hash, size_t len)</div><div class="ttdoc">Finalizes the hashing process and returns the hash. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00217">BLAKE2b.cpp:217</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a917beae2ca6e9831a35717a526089e8a"><div class="ttname"><a href="classBLAKE2b.html#a917beae2ca6e9831a35717a526089e8a">BLAKE2b::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets the hash ready for a new hashing process. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00109">BLAKE2b.cpp:109</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a21623759bd381285ebf7e75a00c9c8a9"><div class="ttname"><a href="classBLAKE2b.html#a21623759bd381285ebf7e75a00c9c8a9">BLAKE2b::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears the hash state, removing all sensitive data, and then resets the hash ready for a new hashing ...</div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00233">BLAKE2b.cpp:233</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a19b3b751809905a5587468f0d6c666ff"><div class="ttname"><a href="classBLAKE2b.html#a19b3b751809905a5587468f0d6c666ff">BLAKE2b::BLAKE2b</a></div><div class="ttdeci">BLAKE2b()</div><div class="ttdoc">Constructs a BLAKE2b hash object. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00075">BLAKE2b.cpp:75</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_abec1b2320c3afaed12a29cf081b95fe2"><div class="ttname"><a href="classBLAKE2b.html#abec1b2320c3afaed12a29cf081b95fe2">BLAKE2b::blockSize</a></div><div class="ttdeci">size_t blockSize() const </div><div class="ttdoc">Size of the internal block used by the hash algorithm. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00094">BLAKE2b.cpp:94</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a7555de16f6918ab820170a7ed3098c89"><div class="ttname"><a href="classBLAKE2b.html#a7555de16f6918ab820170a7ed3098c89">BLAKE2b::hashSize</a></div><div class="ttdeci">size_t hashSize() const </div><div class="ttdoc">Size of the hash result from finalize(). </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00089">BLAKE2b.cpp:89</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_ad0287d7284000ff236153e6afa0130f1"><div class="ttname"><a href="classBLAKE2b.html#ad0287d7284000ff236153e6afa0130f1">BLAKE2b::~BLAKE2b</a></div><div class="ttdeci">virtual ~BLAKE2b()</div><div class="ttdoc">Destroys this BLAKE2b hash object after clearing sensitive information. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00084">BLAKE2b.cpp:84</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a468e48c66ce1738e11c922d133135069"><div class="ttname"><a href="classBLAKE2b.html#a468e48c66ce1738e11c922d133135069">BLAKE2b::update</a></div><div class="ttdeci">void update(const void *data, size_t len)</div><div class="ttdoc">Updates the hash with more data. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00192">BLAKE2b.cpp:192</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_acb1ca4081c509d1c34b3aee465cd4494"><div class="ttname"><a href="classBLAKE2b.html#acb1ca4081c509d1c34b3aee465cd4494">BLAKE2b::resetHMAC</a></div><div class="ttdeci">void resetHMAC(const void *key, size_t keyLen)</div><div class="ttdoc">Resets the hash ready for a new HMAC hashing process. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00239">BLAKE2b.cpp:239</a></div></div>
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<div class="ttc" id="classHash_html_ab6f40c9af91dc3d738d9fcce59af63cc"><div class="ttname"><a href="classHash.html#ab6f40c9af91dc3d738d9fcce59af63cc">Hash::formatHMACKey</a></div><div class="ttdeci">void formatHMACKey(void *block, const void *key, size_t len, uint8_t pad)</div><div class="ttdoc">Formats a HMAC key into a block. </div><div class="ttdef"><b>Definition:</b> <a href="Hash_8cpp_source.html#l00162">Hash.cpp:162</a></div></div>
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<div class="ttc" id="classBLAKE2b_html_a29fafbba26e3c1d896b4d4c428f7d52a"><div class="ttname"><a href="classBLAKE2b.html#a29fafbba26e3c1d896b4d4c428f7d52a">BLAKE2b::finalizeHMAC</a></div><div class="ttdeci">void finalizeHMAC(const void *key, size_t keyLen, void *hash, size_t hashLen)</div><div class="ttdoc">Finalizes the HMAC hashing process and returns the hash. </div><div class="ttdef"><b>Definition:</b> <a href="BLAKE2b_8cpp_source.html#l00246">BLAKE2b.cpp:246</a></div></div>
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