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 <span id="projectnumber">1.1</span>
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<div class="title">TinySHA1.hpp</div> </div>
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<a href="_tiny_s_h_a1_8hpp.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">/*</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * SHA1 Wikipedia Page: http://en.wikipedia.org/wiki/SHA-1</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"> * Copyright (c) 2012-22 SAURAV MOHAPATRA <mohaps@gmail.com></span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Permission to use, copy, modify, and distribute this software for any</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * purpose with or without fee is hereby granted, provided that the above</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * copyright notice and this permission notice appear in all copies.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">/** </span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * \file TinySHA1.hpp</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * \author SAURAV MOHAPATRA <mohaps@gmail.com></span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * \date 2012-22</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * \brief TinySHA1 - a header only implementation of the SHA1 algorithm in C++. Based</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * on the implementation in boost::uuid::details.</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * In this file are defined:</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * - sha1::SHA1</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _TINY_SHA1_HPP_</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _TINY_SHA1_HPP_</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <cstdio></span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <cstdlib></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <cstring></span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/**</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="namespacesha1.html"> 37</a></span> <span class="comment"> * \namespace sha1</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * \brief Here is defined the SHA1 class</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span><a class="code" href="namespacesha1.html">sha1</a></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {<span class="comment"></span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /**</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * \class SHA1</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * \brief A tiny SHA1 algorithm implementation used internally in the</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * Crow server (specifically in crow/websocket.h).</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classsha1_1_1_s_h_a1.html"> 47</a></span>  <span class="keyword">class </span><a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typedef</span> uint32_t digest32_t[5];</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">typedef</span> uint8_t digest8_t[20];</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">inline</span> <span class="keyword">static</span> uint32_t LeftRotate(uint32_t value, <span class="keywordtype">size_t</span> count) {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> (value << count) ^ (value >> (32-count));</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>(){ reset(); }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">virtual</span> ~<a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>() {}</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>(<span class="keyword">const</span> <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& s) { *<span class="keyword">this</span> = s; }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">const</span> <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& operator = (<span class="keyword">const</span> <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& s) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  memcpy(m_digest, s.m_digest, 5 * <span class="keyword">sizeof</span>(uint32_t));</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  memcpy(m_block, s.m_block, 64);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  m_blockByteIndex = s.m_blockByteIndex;</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  m_byteCount = s.m_byteCount;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& reset() {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  m_digest[0] = 0x67452301;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  m_digest[1] = 0xEFCDAB89;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  m_digest[2] = 0x98BADCFE;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  m_digest[3] = 0x10325476;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  m_digest[4] = 0xC3D2E1F0;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  m_blockByteIndex = 0;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  m_byteCount = 0;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& processByte(uint8_t octet) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  this->m_block[this->m_blockByteIndex++] = octet;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  ++this->m_byteCount;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span>(m_blockByteIndex == 64) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  this->m_blockByteIndex = 0;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  processBlock();</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& processBlock(<span class="keyword">const</span> <span class="keywordtype">void</span>* <span class="keyword">const</span> start, <span class="keyword">const</span> <span class="keywordtype">void</span>* <span class="keyword">const</span> end) {</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> uint8_t* begin = <span class="keyword">static_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(start);</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> uint8_t* finish = <span class="keyword">static_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(end);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">while</span>(begin != finish) {</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  processByte(*begin);</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  begin++;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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>  <a class="code" href="classsha1_1_1_s_h_a1.html">SHA1</a>& processBytes(<span class="keyword">const</span> <span class="keywordtype">void</span>* <span class="keyword">const</span> data, <span class="keywordtype">size_t</span> len) {</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> uint8_t* block = <span class="keyword">static_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(data);</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  processBlock(block, block + len);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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>  <span class="keyword">const</span> uint32_t* getDigest(digest32_t digest) {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordtype">size_t</span> bitCount = this->m_byteCount * 8;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  processByte(0x80);</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (this->m_blockByteIndex > 56) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">while</span> (m_blockByteIndex != 0) {</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  processByte(0);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">while</span> (m_blockByteIndex < 56) {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  processByte(0);</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">while</span> (m_blockByteIndex < 56) {</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  processByte(0);</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  processByte(0);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  processByte(0);</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  processByte(0);</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  processByte(0);</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  processByte( <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">></span>((bitCount>>24) & 0xFF));</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  processByte( <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">></span>((bitCount>>16) & 0xFF));</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  processByte( <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">></span>((bitCount>>8 ) & 0xFF));</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  processByte( <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">></span>((bitCount) & 0xFF));</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  memcpy(digest, m_digest, 5 * <span class="keyword">sizeof</span>(uint32_t));</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span> digest;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">const</span> uint8_t* getDigestBytes(digest8_t digest) {</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  digest32_t d32;</div>
|
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  getDigest(d32);</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">size_t</span> di = 0;</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  digest[di++] = ((d32[0] >> 24) & 0xFF);</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  digest[di++] = ((d32[0] >> 16) & 0xFF);</div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  digest[di++] = ((d32[0] >> 8) & 0xFF);</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  digest[di++] = ((d32[0]) & 0xFF);</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
|
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  digest[di++] = ((d32[1] >> 24) & 0xFF);</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  digest[di++] = ((d32[1] >> 16) & 0xFF);</div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  digest[di++] = ((d32[1] >> 8) & 0xFF);</div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  digest[di++] = ((d32[1]) & 0xFF);</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div>
|
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  digest[di++] = ((d32[2] >> 24) & 0xFF);</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  digest[di++] = ((d32[2] >> 16) & 0xFF);</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  digest[di++] = ((d32[2] >> 8) & 0xFF);</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  digest[di++] = ((d32[2]) & 0xFF);</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  digest[di++] = ((d32[3] >> 24) & 0xFF);</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  digest[di++] = ((d32[3] >> 16) & 0xFF);</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  digest[di++] = ((d32[3] >> 8) & 0xFF);</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  digest[di++] = ((d32[3]) & 0xFF);</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>  digest[di++] = ((d32[4] >> 24) & 0xFF);</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  digest[di++] = ((d32[4] >> 16) & 0xFF);</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  digest[di++] = ((d32[4] >> 8) & 0xFF);</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  digest[di++] = ((d32[4]) & 0xFF);</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span> digest;</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">protected</span>:</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">void</span> processBlock() {</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  uint32_t w[80];</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < 16; i++) {</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  w[i] = (m_block[i*4 + 0] << 24);</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  w[i] |= (m_block[i*4 + 1] << 16);</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  w[i] |= (m_block[i*4 + 2] << 8);</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  w[i] |= (m_block[i*4 + 3]);</div>
|
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div>
|
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 16; i < 80; i++) {</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  w[i] = LeftRotate((w[i-3] ^ w[i-8] ^ w[i-14] ^ w[i-16]), 1);</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  uint32_t a = m_digest[0];</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  uint32_t b = m_digest[1];</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  uint32_t c = m_digest[2];</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  uint32_t d = m_digest[3];</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  uint32_t e = m_digest[4];</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">for</span> (std::size_t i=0; i<80; ++i) {</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  uint32_t f = 0;</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  uint32_t k = 0;</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (i<20) {</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  f = (b & c) | (~b & d);</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  k = 0x5A827999;</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i<40) {</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  f = b ^ c ^ d;</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  k = 0x6ED9EBA1;</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i<60) {</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  f = (b & c) | (b & d) | (c & d);</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  k = 0x8F1BBCDC;</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  f = b ^ c ^ d;</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  k = 0xCA62C1D6;</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  uint32_t temp = LeftRotate(a, 5) + f + e + k + w[i];</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  e = d;</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  d = c;</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  c = LeftRotate(b, 30);</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  b = a;</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  a = temp;</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  m_digest[0] += a;</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  m_digest[1] += b;</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  m_digest[2] += c;</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  m_digest[3] += d;</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  m_digest[4] += e;</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">private</span>:</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  digest32_t m_digest;</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  uint8_t m_block[64];</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">size_t</span> m_blockByteIndex;</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordtype">size_t</span> m_byteCount;</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  };</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor">#endif</span></div>
|
|
<div class="ttc" id="aclasssha1_1_1_s_h_a1_html"><div class="ttname"><a href="classsha1_1_1_s_h_a1.html">sha1::SHA1</a></div><div class="ttdoc">A tiny SHA1 algorithm implementation used internally in the Crow server (specifically in crow/websock...</div><div class="ttdef"><b>Definition:</b> TinySHA1.hpp:48</div></div>
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<div class="ttc" id="anamespacesha1_html"><div class="ttname"><a href="namespacesha1.html">sha1</a></div><div class="ttdoc">Here is defined the SHA1 class.</div></div>
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