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<div class="headertitle"><div class="title">base64_encoding.cpp</div></div>
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<div class="contents">
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<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><span class="preprocessor">#include <cassert></span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../d6/d4e/namespaceciphers.html">ciphers</a> {</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="../../d9/dc9/namespacebase64__encoding.html">base64_encoding</a> {</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">// chars denoting the format for encoding and decoding array.</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">// This array is already decided by</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">// [RFC4648](https://tools.ietf.org/html/rfc4648#section-4) standard</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="keyword">const</span> std::string chars =</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="stringliteral">"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"</span>;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span>std::string base64_encode(<span class="keyword">const</span> std::string &input) {</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> std::string base64_string; </div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// base64 deals with 6-bit chars encoded as per chars, so</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// we will always filter 6-bits from input.</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordflow">for</span> (uint32_t i = 0; i < input.size(); i += 3) {</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">char</span> first_byte = input[i]; </div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// Take first six bits of first character.</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// Encode the first six bits with character defined in string `chars`</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> base64_string.push_back(chars[first_byte >> 2]);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">if</span> (i + 1 < input.size()) {</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordtype">char</span> second_byte = input[i + 1]; </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// Take remaining two bits of first character, and four first bits</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// from second character Combine two numbers as 6-bit digits and</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// encode by array chars (first two bits of first byte and next four</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// of second byte)</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> base64_string.push_back(</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> chars[(((first_byte & 3) << 4) | ((second_byte & 0xF0) >> 4))]);</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">if</span> (i + 2 < input.size()) {</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">char</span> third_byte = input[i + 2]; </div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// Take remaining four bits of second character, and first two</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// bits from third character Combine two numbers as 6-bit digits</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// and encode by array chars (remaining four bits of second byte</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// and first two of third byte)</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> base64_string.push_back(chars[((third_byte & 0xC0) >> 6) |</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> ((second_byte & 0x0F) << 2)]);</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// Encode remaining 6-bit of third byte by array chars</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> base64_string.push_back(chars[(third_byte & 0x3F)]);</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// Take remaining four bits of second character as 6-bit number</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> base64_string.push_back(chars[((second_byte & 0x0F) << 2)]);</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> base64_string.push_back(<span class="charliteral">'='</span>); <span class="comment">// padding characters</span></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> }</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// Take remaining two bits of first character as 6-bit number</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> base64_string.push_back(chars[((first_byte & 3) << 4)]);</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> base64_string.push_back(<span class="charliteral">'='</span>); <span class="comment">// padding characters</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> base64_string.push_back(<span class="charliteral">'='</span>); <span class="comment">// padding characters</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">return</span> base64_string;</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="l00090" name="l00090"></a><span class="lineno"> 90</span>uint8_t find_idx(<span class="keyword">const</span> <span class="keywordtype">char</span> c) {</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">if</span> (c >= <span class="charliteral">'A'</span> && c <= <span class="charliteral">'Z'</span>) {</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> c - <span class="charliteral">'A'</span>;</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c >= <span class="charliteral">'a'</span> && c <= <span class="charliteral">'z'</span>) {</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordflow">return</span> c - <span class="charliteral">'a'</span> + 26;</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c >= <span class="charliteral">'0'</span> && c <= <span class="charliteral">'9'</span>) {</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordflow">return</span> c - <span class="charliteral">'0'</span> + 52;</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c == <span class="charliteral">'+'</span>) {</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">return</span> 62;</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c == <span class="charliteral">'/'</span>) {</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keywordflow">return</span> 63;</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> }</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span>}</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span>std::string base64_decode(<span class="keyword">const</span> std::string &base64_str) {</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> std::string</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> base64_decoded; </div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordflow">for</span> (uint32_t i = 0; i < base64_str.size(); i += 4) {</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordtype">char</span> first_byte = base64_str[i];</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordtype">char</span> second_byte = base64_str[i + 1];</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="comment">// Actual str characters are of 8 bits (or 1 byte):</span></div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="comment">// :: 8 bits are decode by taking 6 bits from 1st byte of base64 string</span></div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="comment">// and first 2 bits from 2nd byte of base64 string.</span></div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordtype">char</span> first_actual_byte = <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="l00122" name="l00122"></a><span class="lineno"> 122</span> (find_idx(first_byte) << 2) | ((find_idx(second_byte)) >> 4));</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> base64_decoded.push_back(first_actual_byte);</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">if</span> (i + 2 < base64_str.size() && base64_str[i + 2] != <span class="charliteral">'='</span>) {</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordtype">char</span> third_byte = base64_str[i + 2];</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="comment">// :: Next 8 bits are decode by taking remaining 4 bits from 2nd</span></div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="comment">// byte of base64 string and first 4 bits from 3rd byte of base64</span></div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="comment">// string.</span></div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordtype">char</span> second_actual_byte =</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">static_cast<</span><span class="keywordtype">char</span><span class="keyword">></span>(((find_idx(second_byte) & 0x0F) << 4) |</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> (find_idx(third_byte) >> 2));</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> base64_decoded.push_back(second_actual_byte);</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">if</span> (i + 3 < base64_str.size() && base64_str[i + 3] != <span class="charliteral">'='</span>) {</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordtype">char</span> fourth_byte = base64_str[i + 3];</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="comment">// :: Taking remaining 2 bits from 3rd byte of base64 string</span></div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="comment">// and all 6 bits from 4th byte of base64 string.</span></div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordtype">char</span> third_actual_byte =</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">static_cast<</span><span class="keywordtype">char</span><span class="keyword">></span>(((find_idx(third_byte) & 0x03) << 6) |</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> find_idx(fourth_byte));</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> base64_decoded.push_back(third_actual_byte);</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> }</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> }</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> base64_decoded;</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 class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>} <span class="comment">// namespace base64_encoding</span></div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span>} <span class="comment">// namespace ciphers</span></div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span></div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</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="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="comment">// 1st Test</span></div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> std::string str =</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="stringliteral">"To err is human, but to really foul things up you need a computer."</span>;</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> std::string base64_str = ciphers::base64_encoding::base64_encode(str);</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> std::string verify =</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="stringliteral">"VG8gZXJyIGlzIGh1bWFuLCBidXQgdG8gcmVhbGx5IGZvdWwgdGhpbmdzIHVwIHlvdSBuZW"</span></div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="stringliteral">"VkIGEgY29tcHV0ZXIu"</span>;</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="comment">// verify encoding</span></div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> assert(base64_str == verify);</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> std::string original_str =</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> ciphers::base64_encoding::base64_decode(base64_str);</div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="comment">// verify decoding</span></div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> assert(original_str == str);</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// 2nd Test from [Wikipedia](https://en.wikipedia.org/wiki/Base64)</span></div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> str =</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="stringliteral">"Man is distinguished, not only by his reason, but by this singular "</span></div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="stringliteral">"passion from other animals, which is a lust of the mind, that by a "</span></div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="stringliteral">"perseverance of delight in the continued and indefatigable generation "</span></div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="stringliteral">"of knowledge, exceeds the short vehemence of any carnal pleasure."</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> base64_str = ciphers::base64_encoding::base64_encode(str);</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> verify =</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="stringliteral">"TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieS"</span></div>
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|
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="stringliteral">"B0aGlzIHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBh"</span></div>
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|
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="stringliteral">"IGx1c3Qgb2YgdGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodC"</span></div>
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|
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="stringliteral">"BpbiB0aGUgY29udGludWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25v"</span></div>
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|
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="stringliteral">"d2xlZGdlLCBleGNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbG"</span></div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="stringliteral">"Vhc3VyZS4="</span>;</div>
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|
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">// verify encoding</span></div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> assert(base64_str == verify);</div>
|
|
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> original_str = ciphers::base64_encoding::base64_decode(base64_str);</div>
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|
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// verify decoding</span></div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> assert(original_str == str);</div>
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|
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span>}</div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span></div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span><span class="keywordtype">int</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#gae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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|
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</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="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span>}</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="agenerate__parentheses_8cpp_html_gae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../dd/d1e/generate__parentheses_8cpp.html#gae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="../../dd/d1e/generate__parentheses_8cpp_source.html#l00110">generate_parentheses.cpp:110</a></div></div>
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<div class="ttc" id="anamespacebase64__encoding_html"><div class="ttname"><a href="../../d9/dc9/namespacebase64__encoding.html">base64_encoding</a></div><div class="ttdoc">Functions for Base64 Encoding and Decoding implementation.</div></div>
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<div class="ttc" id="anamespaceciphers_html"><div class="ttname"><a href="../../d6/d4e/namespaceciphers.html">ciphers</a></div><div class="ttdoc">Algorithms for encryption and decryption.</div></div>
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