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<div class="headertitle"><div class="title">sha256.cpp</div></div>
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<div class="contents">
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<a href="../../d4/d08/sha256_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <array></span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <cassert></span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cstdint></span> </div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <iomanip></span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <sstream></span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <utility></span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <vector></span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../d6/d0c/namespacehashing.html">hashing</a> {</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="keyword">namespace </span>sha256 {</div>
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<div class="foldopen" id="foldopen00040" data-start="{" data-end="};">
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"><a class="line" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html"> 40</a></span><span class="keyword">class </span><a class="code hl_class" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html">Hash</a> {</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// Initialize array of hash values with first 32 bits of the fractional</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// parts of the square roots of the first 8 primes 2..19</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> std::array<uint32_t, 8> hash = {0x6A09E667, 0xBB67AE85, 0x3C6EF372,</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> 0xA54FF53A, 0x510E527F, 0x9B05688C,</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> 0x1F83D9AB, 0x5BE0CD19};</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a0896c27ac39c780e0ee62417fdd0b9d3">update</a>(<span class="keyword">const</span> std::array<uint32_t, 64> &blocks);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> std::string <a class="code hl_function" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a4581f503a263d8e928e5716d54477e08">to_string</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>};</div>
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</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span></div>
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<div class="foldopen" id="foldopen00058" data-start="{" data-end="}">
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c"> 58</a></span>uint32_t <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(uint32_t n, <span class="keywordtype">size_t</span> rotate) {</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">return</span> (n >> rotate) | (n << (32 - rotate));</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span>}</div>
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</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span></div>
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<div class="foldopen" id="foldopen00067" data-start="{" data-end="}">
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"><a class="line" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a0896c27ac39c780e0ee62417fdd0b9d3"> 67</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a0896c27ac39c780e0ee62417fdd0b9d3">Hash::update</a>(<span class="keyword">const</span> std::array<uint32_t, 64> &blocks) {</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// Initialize array of round constants with first 32 bits of the fractional</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// parts of the cube roots of the first 64 primes 2..311</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">const</span> std::array<uint32_t, 64> round_constants = {</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1,</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> 0x923F82A4, 0xAB1C5ED5, 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, 0xE49B69C1, 0xEFBE4786,</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> 0x0FC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147,</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> 0x06CA6351, 0x14292967, 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, 0xA2BFE8A1, 0xA81A664B,</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> 0xC24B8B70, 0xC76C51A3, 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, 0x391C0CB3, 0x4ED8AA4A,</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> 0x5B9CCA4F, 0x682E6FF3, 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2};</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// Initialize working variables</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">auto</span> a = hash[0];</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">auto</span> b = hash[1];</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">auto</span> c = hash[2];</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">auto</span> d = hash[3];</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keyword">auto</span> e = hash[4];</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">auto</span> f = hash[5];</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">auto</span> g = hash[6];</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">auto</span> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a> = hash[7];</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// Compression function main loop</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> block_num = 0; block_num < 64; ++block_num) {</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">const</span> <span class="keyword">auto</span> s1 =</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(e, 6) ^ <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(e, 11) ^ <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(e, 25);</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">const</span> <span class="keyword">auto</span> ch = (e & f) ^ (~e & g);</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">const</span> <span class="keyword">auto</span> temp1 =</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a> + s1 + ch + round_constants[block_num] + blocks[block_num];</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">const</span> <span class="keyword">auto</span> s0 =</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(a, 2) ^ <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(a, 13) ^ <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(a, 22);</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">const</span> <span class="keyword">auto</span> maj = (a & b) ^ (a & c) ^ (b & c);</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">const</span> <span class="keyword">auto</span> temp2 = s0 + maj;</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a> = g;</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> g = f;</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> f = e;</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> e = d + temp1;</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> d = c;</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> c = b;</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> b = a;</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> a = temp1 + temp2;</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> }</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="comment">// Update hash values</span></div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> hash[0] += a;</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> hash[1] += b;</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> hash[2] += c;</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> hash[3] += d;</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> hash[4] += e;</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> hash[5] += f;</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> hash[6] += g;</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> hash[7] += <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a>;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span>}</div>
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</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span></div>
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<div class="foldopen" id="foldopen00130" data-start="{" data-end="}">
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"><a class="line" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a4581f503a263d8e928e5716d54477e08"> 130</a></span>std::string <a class="code hl_function" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a4581f503a263d8e928e5716d54477e08">Hash::to_string</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> std::stringstream ss;</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < 8; ++i) {</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> ss << std::hex << std::setfill(<span class="charliteral">'0'</span>) << std::setw(8) << hash[i];</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">return</span> ss.str();</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span>}</div>
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</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span></div>
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<div class="foldopen" id="foldopen00143" data-start="{" data-end="}">
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27"> 143</a></span>std::size_t <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">compute_padded_size</a>(<span class="keyword">const</span> std::size_t input_size) {</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">if</span> (input_size % 64 < 56) {</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> input_size + 64 - (input_size % 64);</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">return</span> input_size + 128 - (input_size % 64);</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span>}</div>
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</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span></div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="foldopen" id="foldopen00157" data-start="{" data-end="}">
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627"> 157</a></span>uint8_t <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">extract_byte</a>(<span class="keyword">const</span> T in_value, <span class="keyword">const</span> std::size_t byte_num) {</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(in_value) <= byte_num) {</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keywordflow">throw</span> std::out_of_range(<span class="stringliteral">"Byte at index byte_num does not exist"</span>);</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> }</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordflow">return</span> (in_value >> (byte_num * 8)) & 0xFF;</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>}</div>
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</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span></div>
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<div class="foldopen" id="foldopen00170" data-start="{" data-end="}">
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da"> 170</a></span><span class="keywordtype">char</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">get_char</a>(<span class="keyword">const</span> std::string &input, std::size_t pos) {</div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">const</span> <span class="keyword">auto</span> input_size = input.length();</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordflow">if</span> (pos < input_size) {</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordflow">return</span> input[pos];</div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> }</div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keywordflow">if</span> (pos == input_size) {</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="keywordflow">return</span> <span class="stringliteral">'\x80'</span>;</div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> }</div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">const</span> <span class="keyword">auto</span> padded_input_size = <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">compute_padded_size</a>(input_size);</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordflow">if</span> (pos < padded_input_size - 8) {</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keywordflow">return</span> <span class="stringliteral">'\x00'</span>;</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> }</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keywordflow">if</span> (padded_input_size <= pos) {</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">throw</span> std::out_of_range(<span class="stringliteral">"pos is out of range"</span>);</div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> }</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">char</span><span class="keyword">></span>(</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">extract_byte<size_t></a>(input_size * 8, padded_input_size - pos - 1));</div>
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|
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span>}</div>
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</div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span></div>
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<div class="foldopen" id="foldopen00195" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#a525531b3939ed44fbf01674e21931b3a"> 195</a></span>std::array<uint32_t, 64> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a525531b3939ed44fbf01674e21931b3a">create_message_schedule_array</a>(<span class="keyword">const</span> std::string &input,</div>
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|
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> byte_num) {</div>
|
|
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> std::array<uint32_t, 64> blocks{};</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
|
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="comment">// Copy chunk into first 16 words of the message schedule array</span></div>
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|
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> block_num = 0; block_num < 16; ++block_num) {</div>
|
|
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> blocks[block_num] =</div>
|
|
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> (<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">get_char</a>(input, byte_num + block_num * 4))</div>
|
|
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> << 24) |</div>
|
|
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> (<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">get_char</a>(input, byte_num + block_num * 4 + 1))</div>
|
|
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> << 16) |</div>
|
|
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> (<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">get_char</a>(input, byte_num + block_num * 4 + 2))</div>
|
|
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> << 8) |</div>
|
|
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">get_char</a>(input, byte_num + block_num * 4 + 3));</div>
|
|
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> }</div>
|
|
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> </div>
|
|
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> <span class="comment">// Extend the first 16 words into remaining 48 words of the message schedule</span></div>
|
|
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="comment">// array</span></div>
|
|
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> block_num = 16; block_num < 64; ++block_num) {</div>
|
|
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">const</span> <span class="keyword">auto</span> s0 = <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(blocks[block_num - 15], 7) ^</div>
|
|
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(blocks[block_num - 15], 18) ^</div>
|
|
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> (blocks[block_num - 15] >> 3);</div>
|
|
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">const</span> <span class="keyword">auto</span> s1 = <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(blocks[block_num - 2], 17) ^</div>
|
|
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">right_rotate</a>(blocks[block_num - 2], 19) ^</div>
|
|
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> (blocks[block_num - 2] >> 10);</div>
|
|
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> blocks[block_num] =</div>
|
|
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> blocks[block_num - 16] + s0 + blocks[block_num - 7] + s1;</div>
|
|
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> }</div>
|
|
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> </div>
|
|
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">return</span> blocks;</div>
|
|
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span>}</div>
|
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</div>
|
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span></div>
|
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<div class="foldopen" id="foldopen00232" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#a55475649a2bb7aae15de0716a217f43a"> 232</a></span>std::string <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a55475649a2bb7aae15de0716a217f43a">sha256</a>(<span class="keyword">const</span> std::string &input) {</div>
|
|
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <a class="code hl_class" href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html">Hash</a> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a>;</div>
|
|
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="comment">// Process message in successive 512-bit (64-byte) chunks</span></div>
|
|
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> byte_num = 0; byte_num < <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">compute_padded_size</a>(input.length());</div>
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|
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> byte_num += 64) {</div>
|
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a>.update(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a525531b3939ed44fbf01674e21931b3a">create_message_schedule_array</a>(input, byte_num));</div>
|
|
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> }</div>
|
|
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a>.to_string();</div>
|
|
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span>}</div>
|
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</div>
|
|
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span>} <span class="comment">// namespace sha256</span></div>
|
|
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span>} <span class="comment">// namespace hashing</span></div>
|
|
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span></div>
|
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<div class="foldopen" id="foldopen00248" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#af9b52eba85d23e309035354141259f27"> 248</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#af9b52eba85d23e309035354141259f27">test_compute_padded_size</a>() {</div>
|
|
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">hashing::sha256::compute_padded_size</a>(55) == 64);</div>
|
|
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">hashing::sha256::compute_padded_size</a>(56) == 128);</div>
|
|
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">hashing::sha256::compute_padded_size</a>(130) == 192);</div>
|
|
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span>}</div>
|
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</div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> </div>
|
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span><span class="keyword">static</span> <span class="keywordtype">void</span> test_extract_byte() {</div>
|
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">hashing::sha256::extract_byte<uint32_t></a>(512, 0) == 0);</div>
|
|
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">hashing::sha256::extract_byte<uint32_t></a>(512, 1) == 2);</div>
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|
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="keywordtype">bool</span> exception = <span class="keyword">false</span>;</div>
|
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordflow">try</span> {</div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">hashing::sha256::extract_byte<uint32_t></a>(512, 5);</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> } <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::out_of_range &) {</div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> exception = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> }</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> assert(exception);</div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span>}</div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> </div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span><span class="keyword">static</span> <span class="keywordtype">void</span> test_get_char() {</div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a>(<span class="stringliteral">"test"</span>, 3) == <span class="charliteral">'t'</span>);</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a>(<span class="stringliteral">"test"</span>, 4) == <span class="stringliteral">'\x80'</span>);</div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a>(<span class="stringliteral">"test"</span>, 5) == <span class="stringliteral">'\x00'</span>);</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a>(<span class="stringliteral">"test"</span>, 63) == 32);</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keywordtype">bool</span> exception = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keywordflow">try</span> {</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a>(<span class="stringliteral">"test"</span>, 64);</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> } <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::out_of_range &) {</div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> exception = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> }</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> assert(exception);</div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span>}</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> </div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span><span class="keyword">static</span> <span class="keywordtype">void</span> test_right_rotate() {</div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">hashing::sha256::right_rotate</a>(128, 3) == 16);</div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">hashing::sha256::right_rotate</a>(1, 30) == 4);</div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">hashing::sha256::right_rotate</a>(6, 30) == 24);</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span>}</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span><span class="keyword">static</span> <span class="keywordtype">void</span> test_sha256() {</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keyword">struct </span><a class="code hl_struct" href="../../da/d86/struct_test_case.html">TestCase</a> {</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keyword">const</span> std::string input;</div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> <span class="keyword">const</span> std::string expected_hash;</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> TestCase(std::string input, std::string expected_hash)</div>
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<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> : input(std::move(input)),</div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> expected_hash(std::move(expected_hash)) {}</div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> };</div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <span class="keyword">const</span> std::vector<TestCase> test_cases{</div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> <a class="code hl_struct" href="../../da/d86/struct_test_case.html">TestCase</a>(</div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> <span class="stringliteral">""</span>,</div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> <span class="stringliteral">"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"</span>),</div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <a class="code hl_struct" href="../../da/d86/struct_test_case.html">TestCase</a>(</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="stringliteral">"test"</span>,</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="stringliteral">"9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"</span>),</div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> <a class="code hl_struct" href="../../da/d86/struct_test_case.html">TestCase</a>(</div>
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<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> <span class="stringliteral">"Hello World"</span>,</div>
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<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> <span class="stringliteral">"a591a6d40bf420404a011733cfb7b190d62c65bf0bcda32b57b277d9ad9f146e"</span>),</div>
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<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> <a class="code hl_struct" href="../../da/d86/struct_test_case.html">TestCase</a>(<span class="stringliteral">"Hello World!"</span>,</div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> <span class="stringliteral">"7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9"</span></div>
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<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="stringliteral">"069"</span>)};</div>
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<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span> &tc : test_cases) {</div>
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<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> assert(<a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#a55475649a2bb7aae15de0716a217f43a">hashing::sha256::sha256</a>(tc.input) == tc.expected_hash);</div>
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<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> }</div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span>}</div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> </div>
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<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>() {</div>
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|
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#af9b52eba85d23e309035354141259f27">test_compute_padded_size</a>();</div>
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<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> test_extract_byte();</div>
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<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> test_get_char();</div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> test_right_rotate();</div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> test_sha256();</div>
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<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> </div>
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<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> std::cout << <span class="stringliteral">"All tests have successfully passed!\n"</span>;</div>
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<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span>}</div>
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<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span></div>
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<div class="foldopen" id="foldopen00326" data-start="{" data-end="}">
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"><a class="line" href="../../d4/d08/sha256_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 326</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d4/d08/sha256_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// Run self-test implementations</span></div>
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<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span>}</div>
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</div>
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<div class="ttc" id="aclasshashing_1_1sha256_1_1_hash_html"><div class="ttname"><a href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html">hashing::sha256::Hash</a></div><div class="ttdoc">Contains hash array and functions to update it and convert it to a hexadecimal string.</div><div class="ttdef"><b>Definition</b> <a href="#l00040">sha256.cpp:40</a></div></div>
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<div class="ttc" id="aclasshashing_1_1sha256_1_1_hash_html_a0896c27ac39c780e0ee62417fdd0b9d3"><div class="ttname"><a href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a0896c27ac39c780e0ee62417fdd0b9d3">hashing::sha256::Hash::update</a></div><div class="ttdeci">void update(const std::array< uint32_t, 64 > &blocks)</div><div class="ttdoc">Updates the hash array.</div><div class="ttdef"><b>Definition</b> <a href="#l00067">sha256.cpp:67</a></div></div>
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<div class="ttc" id="aclasshashing_1_1sha256_1_1_hash_html_a4581f503a263d8e928e5716d54477e08"><div class="ttname"><a href="../../d6/d84/classhashing_1_1sha256_1_1_hash.html#a4581f503a263d8e928e5716d54477e08">hashing::sha256::Hash::to_string</a></div><div class="ttdeci">std::string to_string() const</div><div class="ttdoc">Convert the hash to a hexadecimal string.</div><div class="ttdef"><b>Definition</b> <a href="#l00130">sha256.cpp:130</a></div></div>
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<div class="ttc" id="agenerate__parentheses_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="../../dd/d1e/generate__parentheses_8cpp_source.html#l00082">generate_parentheses.cpp:82</a></div></div>
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<div class="ttc" id="ahash__search_8cpp_html_a566eaf0ffafd50bc61e644561fd27001"><div class="ttname"><a href="../../d1/df3/hash__search_8cpp.html#a566eaf0ffafd50bc61e644561fd27001">h</a></div><div class="ttdeci">int h(int key)</div><div class="ttdef"><b>Definition</b> <a href="../../d1/df3/hash__search_8cpp_source.html#l00045">hash_search.cpp:45</a></div></div>
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<div class="ttc" id="anamespacehashing_html"><div class="ttname"><a href="../../d6/d0c/namespacehashing.html">hashing</a></div><div class="ttdoc">Used for assert.</div></div>
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<div class="ttc" id="asha256_8cpp_html_a28c1c6724dc6bcf91a39818699bbec27"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#a28c1c6724dc6bcf91a39818699bbec27">hashing::sha256::compute_padded_size</a></div><div class="ttdeci">std::size_t compute_padded_size(const std::size_t input_size)</div><div class="ttdoc">Computes size of the padded input.</div><div class="ttdef"><b>Definition</b> <a href="#l00143">sha256.cpp:143</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_a525531b3939ed44fbf01674e21931b3a"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#a525531b3939ed44fbf01674e21931b3a">hashing::sha256::create_message_schedule_array</a></div><div class="ttdeci">std::array< uint32_t, 64 > create_message_schedule_array(const std::string &input, const size_t byte_num)</div><div class="ttdoc">Creates the message schedule array.</div><div class="ttdef"><b>Definition</b> <a href="#l00195">sha256.cpp:195</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_a55475649a2bb7aae15de0716a217f43a"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#a55475649a2bb7aae15de0716a217f43a">hashing::sha256::sha256</a></div><div class="ttdeci">std::string sha256(const std::string &input)</div><div class="ttdoc">Computes the final hash value.</div><div class="ttdef"><b>Definition</b> <a href="#l00232">sha256.cpp:232</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_a9e98c180d32b04aab6f767cb0c13e1da"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#a9e98c180d32b04aab6f767cb0c13e1da">hashing::sha256::get_char</a></div><div class="ttdeci">char get_char(const std::string &input, std::size_t pos)</div><div class="ttdoc">Returns the character at pos after the input is padded.</div><div class="ttdef"><b>Definition</b> <a href="#l00170">sha256.cpp:170</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_adbcd504103c342a4da718f8fce6ff06c"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#adbcd504103c342a4da718f8fce6ff06c">hashing::sha256::right_rotate</a></div><div class="ttdeci">uint32_t right_rotate(uint32_t n, size_t rotate)</div><div class="ttdoc">Rotates the bits of a 32-bit unsigned integer.</div><div class="ttdef"><b>Definition</b> <a href="#l00058">sha256.cpp:58</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00326">sha256.cpp:326</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_af9b52eba85d23e309035354141259f27"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#af9b52eba85d23e309035354141259f27">test_compute_padded_size</a></div><div class="ttdeci">static void test_compute_padded_size()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="#l00248">sha256.cpp:248</a></div></div>
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<div class="ttc" id="asha256_8cpp_html_afea411191ec5281f43e91ea327984627"><div class="ttname"><a href="../../d4/d08/sha256_8cpp.html#afea411191ec5281f43e91ea327984627">hashing::sha256::extract_byte</a></div><div class="ttdeci">uint8_t extract_byte(const T in_value, const std::size_t byte_num)</div><div class="ttdoc">Returns the byte at position byte_num in in_value.</div><div class="ttdef"><b>Definition</b> <a href="#l00157">sha256.cpp:157</a></div></div>
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<div class="ttc" id="astruct_test_case_html"><div class="ttname"><a href="../../da/d86/struct_test_case.html">TestCase</a></div><div class="ttdoc">represents single example inputs and expected output of the function longest_common_string_length</div><div class="ttdef"><b>Definition</b> <a href="../../da/d0d/longest__common__string_8cpp_source.html#l00054">longest_common_string.cpp:54</a></div></div>
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