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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_1e765e6a8d5970800a535eb2615ec474.html">protocol</a></li><li class="navelem"><a class="el" href="dir_41c387a0f328eeb295307369675c1162.html">impl</a></li> </ul>
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<div class="title">tokens.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment">//==============================================================================</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/safe_cast.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/tokens.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/digest.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;boost/container/small_vector.hpp&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a>&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a>&gt;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/memory.html">memory</a>&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/utility.html">utility</a>&gt;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/vector.html">vector</a>&gt;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="namespaceripple.html#aab866392930125a4cb3c96277003f6c8"> 33</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">char</span> <a class="code" href="namespaceripple.html#aab866392930125a4cb3c96277003f6c8">rippleAlphabet</a>[] =</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="stringliteral">&quot;rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz&quot;</span>;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="namespaceripple.html#aa90b7850effa1efb50a9121eec005a80"> 36</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">char</span> <a class="code" href="namespaceripple.html#aa90b7850effa1efb50a9121eec005a80">bitcoinAlphabet</a>[] =</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="stringliteral">&quot;123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz&quot;</span>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Hasher&gt;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keyword">typename</span> Hasher::result_type</div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespaceripple.html#a91e9fe7a4e92dba79c3812fd3edcaacc"> 44</a></span>&#160;<a class="code" href="namespaceripple.html#a91e9fe7a4e92dba79c3812fd3edcaacc">digest</a> (<span class="keywordtype">void</span> <span class="keyword">const</span>* data, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size) noexcept</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;{</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; Hasher h;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; h(data, size);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; typename Hasher::result_type<span class="keyword">&gt;</span>(h);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;}</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class </span>Hasher, <span class="keyword">class </span>T, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> N,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">class </span>= <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a>&lt;<span class="keyword">sizeof</span>(T) == 1&gt;&gt;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="keyword">typename</span> Hasher::result_type</div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="namespaceripple.html#aa7ab589b7476d6c8d2fc9ae8c72d38be"> 56</a></span>&#160;<a class="code" href="namespaceripple.html#a91e9fe7a4e92dba79c3812fd3edcaacc">digest</a> (<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;T, N&gt;</a> <span class="keyword">const</span>&amp; v)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;{</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">return</span> digest&lt;Hasher&gt;(v.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/data.html">data</a>(), v.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/size.html">size</a>());</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;}</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment">// Computes a double digest (e.g. digest of the digest)</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class </span>Hasher, <span class="keyword">class</span>... Args&gt;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="keyword">typename</span> Hasher::result_type</div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="namespaceripple.html#acd04261400a2d3beb5986da2e26ed0b4"> 65</a></span>&#160;<a class="code" href="namespaceripple.html#acd04261400a2d3beb5986da2e26ed0b4">digest2</a> (Args <span class="keyword">const</span>&amp;... args)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;{</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">return</span> digest&lt;Hasher&gt;(</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; digest&lt;Hasher&gt;(args...));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;}</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment">/* Calculate a 4-byte checksum of the data</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> The checksum is calculated as the first 4 bytes</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> of the SHA256 digest of the message. This is added</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"> to the base58 encoding of identifiers to detect</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment"> user error in data entry.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment"> @note This checksum algorithm is part of the client API</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="namespaceripple.html#a257e6f31c4383d21b9309a2b50d24883"> 81</a></span>&#160;<a class="code" href="namespaceripple.html#a257e6f31c4383d21b9309a2b50d24883">checksum</a> (<span class="keywordtype">void</span>* out,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordtype">void</span> <span class="keyword">const</span>* message,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size)</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;{</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> h =</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; digest2&lt;sha256_hasher&gt;(message, size);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/byte/memcpy.html">std::memcpy</a>(<a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>, h.data(), 4);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">// Code from Bitcoin: https://github.com/bitcoin/bitcoin</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">// Copyright (c) 2014 The Bitcoin Core developers</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment">// Distributed under the MIT software license, see the accompanying</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment">// Modified from the original</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment">// WARNING Do not call this directly, use</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment">// encodeBase58Token instead since it</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment">// calculates the size of buffer needed.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="namespaceripple.html#a0a43093d095ea2ef5b027170a9348cd3"> 104</a></span>&#160;<a class="code" href="namespaceripple.html#a0a43093d095ea2ef5b027170a9348cd3">encodeBase58</a>(</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordtype">void</span> <span class="keyword">const</span>* message, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size,</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordtype">void</span> *temp, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> temp_size,</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordtype">char</span> <span class="keyword">const</span>* <span class="keyword">const</span> alphabet)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;{</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keyword">auto</span> pbegin = <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> const*<span class="keyword">&gt;</span>(message);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> pend = pbegin + size;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="comment">// Skip &amp; count leading zeroes.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordtype">int</span> zeroes = 0;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordflow">while</span> (pbegin != pend &amp;&amp; *pbegin == 0)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; pbegin++;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; zeroes++;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> b58begin = <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(temp);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> b58end = b58begin + temp_size;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/algorithm/fill.html">std::fill</a>(b58begin, b58end, 0);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">while</span> (pbegin != pend)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keywordtype">int</span> carry = *pbegin;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="comment">// Apply &quot;b58 = b58 * 256 + ch&quot;.</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> iter = b58end; iter != b58begin; --iter)</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; carry += 256 * (iter[-1]);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; iter[-1] = carry % 58;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; carry /= 58;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; }</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; assert(carry == 0);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; pbegin++;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="comment">// Skip leading zeroes in base58 result.</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">auto</span> iter = b58begin;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keywordflow">while</span> (iter != b58end &amp;&amp; *iter == 0)</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; ++iter;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="comment">// Translate the result into a string.</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> str;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; str.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/reserve.html">reserve</a>(zeroes + (b58end - iter));</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; str.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/assign.html">assign</a>(zeroes, alphabet[0]);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keywordflow">while</span> (iter != b58end)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; str += alphabet[*(iter++)];</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordflow">return</span> str;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;}</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="namespaceripple.html#a62056a38f7d19614cddbabeb5783ebac"> 155</a></span>&#160;<a class="code" href="namespaceripple.html#a62056a38f7d19614cddbabeb5783ebac">encodeToken</a> (<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type,</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordtype">void</span> <span class="keyword">const</span>* token, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size, <span class="keywordtype">char</span> <span class="keyword">const</span>* <span class="keyword">const</span> alphabet)</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;{</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="comment">// expanded token includes type + 4 byte checksum</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> expanded = 1 + size + 4;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="comment">// We need expanded + expanded * (log(256) / log(58)) which is</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="comment">// bounded by expanded + expanded * (138 / 100 + 1) which works</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <span class="comment">// out to expanded * 3:</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> bufsize = expanded * 3;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; boost::container::small_vector&lt;std::uint8_t, 1024&gt; buf (bufsize);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="comment">// Lay the data out as</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="comment">// &lt;type&gt;&lt;token&gt;&lt;checksum&gt;</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; buf[0] = safe_cast&lt;std::underlying_type_t &lt;TokenType&gt;&gt;(type);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">if</span> (size)</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/byte/memcpy.html">std::memcpy</a>(buf.data() + 1, token, size);</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="namespaceripple.html#a257e6f31c4383d21b9309a2b50d24883">checksum</a>(buf.data() + 1 + size, buf.data(), 1 + size);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a0a43093d095ea2ef5b027170a9348cd3">encodeBase58</a>(</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; buf.data(), expanded,</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; buf.data() + expanded, bufsize - expanded,</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; alphabet);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;}</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="namespaceripple.html#aa0d412b8937660a0a98f1df59fa6ea4e"> 182</a></span>&#160;<a class="code" href="namespaceripple.html#aa0d412b8937660a0a98f1df59fa6ea4e">base58EncodeToken</a> (<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type,</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordtype">void</span> <span class="keyword">const</span>* token, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size)</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;{</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a62056a38f7d19614cddbabeb5783ebac">encodeToken</a>(type, token, size, <a class="code" href="namespaceripple.html#aab866392930125a4cb3c96277003f6c8">rippleAlphabet</a>);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;}</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="namespaceripple.html#a1340479593e450b7e785a9890ae6db87"> 189</a></span>&#160;<a class="code" href="namespaceripple.html#a1340479593e450b7e785a9890ae6db87">base58EncodeTokenBitcoin</a> (<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type,</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordtype">void</span> <span class="keyword">const</span>* token, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size)</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;{</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a62056a38f7d19614cddbabeb5783ebac">encodeToken</a>(type, token, size, <a class="code" href="namespaceripple.html#aa90b7850effa1efb50a9121eec005a80">bitcoinAlphabet</a>);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;}</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="comment">// Code from Bitcoin: https://github.com/bitcoin/bitcoin</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;<span class="comment">// Copyright (c) 2014 The Bitcoin Core developers</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;<span class="comment">// Distributed under the MIT software license, see the accompanying</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;<span class="comment">// Modified from the original</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> InverseArray&gt;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00206"></a><span class="lineno"><a class="line" href="namespaceripple.html#a3035f4e3bae8ace089316e36629d8e0b"> 206</a></span>&#160;<a class="code" href="namespaceripple.html#a3035f4e3bae8ace089316e36629d8e0b">decodeBase58</a> (<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; s,</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; InverseArray <span class="keyword">const</span>&amp; inv)</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;{</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="keyword">auto</span> psz = s.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/c_str.html">c_str</a>();</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keyword">auto</span> remain = s.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>();</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="comment">// Skip and count leading zeroes</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordtype">int</span> zeroes = 0;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="keywordflow">while</span> (remain &gt; 0 &amp;&amp; inv[*psz] == 0)</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; {</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; ++zeroes;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; ++psz;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; --remain;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; }</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordflow">if</span> (remain &gt; 64)</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="comment">// Allocate enough space in big-endian base256 representation.</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="comment">// log(58) / log(256), rounded up.</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;unsigned char&gt;</a> b256(</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; remain * 733 / 1000 + 1);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">while</span> (remain &gt; 0)</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keyword">auto</span> carry = inv[*psz];</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="keywordflow">if</span> (carry == -1)</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="comment">// Apply &quot;b256 = b256 * 58 + carry&quot;.</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> iter = b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/rbegin.html">rbegin</a>();</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; iter != b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/rend.html">rend</a>(); ++iter)</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; carry += 58 * *iter;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; *iter = carry % 256;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; carry /= 256;</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; assert(carry == 0);</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; ++psz;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; --remain;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; }</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="comment">// Skip leading zeroes in b256.</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keyword">auto</span> iter = <a class="codeRef" href="http://en.cppreference.com/w/cpp/algorithm/find.html">std::find_if</a>(</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/begin.html">begin</a>(), b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>(),[](<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c)</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; { return c != 0; });</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> result;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; result.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/reserve.html">reserve</a> (zeroes + (b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>() - iter));</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; result.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/assign.html">assign</a> (zeroes, 0x00);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keywordflow">while</span> (iter != b256.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>())</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; result.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/push_back.html">push_back</a>(*(iter++));</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;}</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;<span class="comment">/* Base58 decode a Ripple token</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="comment"> The type and checksum are are checked</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="comment"> and removed from the returned result.</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> InverseArray&gt;</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;<span class="keyword">static</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3"> 264</a></span>&#160;<a class="code" href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3">decodeBase58Token</a> (<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; s,</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type, InverseArray <span class="keyword">const</span>&amp; inv)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;{</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span> ret = <a class="code" href="namespaceripple.html#a3035f4e3bae8ace089316e36629d8e0b">decodeBase58</a>(s, inv);</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="comment">// Reject zero length tokens</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <span class="keywordflow">if</span> (ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>() &lt; 6)</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="comment">// The type must match.</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="keywordflow">if</span> (type != safe_cast&lt;TokenType&gt;(<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint8_t</a><span class="keyword">&gt;</span>(ret[0])))</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="comment">// And the checksum must as well.</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;char, 4&gt;</a> guard;</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <a class="code" href="namespaceripple.html#a257e6f31c4383d21b9309a2b50d24883">checksum</a>(guard.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/data.html">data</a>(), ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/data.html">data</a>(), ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>() - guard.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/size.html">size</a>());</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keywordflow">if</span> (!<a class="codeRef" href="http://en.cppreference.com/w/cpp/algorithm/equal.html">std::equal</a> (guard.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/rbegin.html">rbegin</a>(), guard.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/rend.html">rend</a>(), ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/rbegin.html">rbegin</a>()))</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="comment">// Skip the leading type byte and the trailing checksum.</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordflow">return</span> ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/substr.html">substr</a>(1, ret.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>() - 1 - guard.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/size.html">size</a>());</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;}</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; </div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;<span class="comment">// Maps characters to their base58 digit</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="classripple_1_1InverseAlphabet.html"> 290</a></span>&#160;<span class="keyword">class </span><a class="code" href="classripple_1_1InverseAlphabet.html">InverseAlphabet</a></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;{</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94"> 293</a></span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;int, 256&gt;</a> <a class="code" href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94">map_</a>;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; <span class="keyword">explicit</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="line" href="classripple_1_1InverseAlphabet.html#a5e5abf956be5969ea0042985ac9a2226"> 297</a></span>&#160; <a class="code" href="classripple_1_1InverseAlphabet.html#a5e5abf956be5969ea0042985ac9a2226">InverseAlphabet</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; digits)</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <a class="code" href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94">map_</a>.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array/fill.html">fill</a>(-1);</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; <span class="keywordflow">for</span>(<span class="keyword">auto</span> <span class="keyword">const</span> c : digits)</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; <a class="code" href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94">map_</a>[<span class="keyword">static_cast&lt;</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">&gt;</span>(c)] = i++;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; }</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; <span class="keywordtype">int</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"><a class="line" href="classripple_1_1InverseAlphabet.html#a4b7fc29707a3775b6314c6510190b763"> 307</a></span>&#160; <a class="code" href="classripple_1_1InverseAlphabet.html#a4b7fc29707a3775b6314c6510190b763">operator[]</a>(<span class="keywordtype">char</span> c)<span class="keyword"> const</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;<span class="keyword"> </span>{</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94">map_</a>[<span class="keyword">static_cast&lt;</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span><span class="keyword">&gt;</span>(c)];</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;};</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="keyword">static</span> InverseAlphabet <a class="code" href="namespaceripple.html#a2d38d5713f432d9ad7bc8901edc7fdb2">rippleInverse</a>(<a class="code" href="namespaceripple.html#aab866392930125a4cb3c96277003f6c8">rippleAlphabet</a>);</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;<span class="keyword">static</span> InverseAlphabet <a class="code" href="namespaceripple.html#ac1fa41b375c9cfe0b30074df1a59d56f">bitcoinInverse</a>(<a class="code" href="namespaceripple.html#aa90b7850effa1efb50a9121eec005a80">bitcoinAlphabet</a>);</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; </div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00319"></a><span class="lineno"><a class="line" href="namespaceripple.html#a9952e5a413358e9a647b31c86c5835ff"> 319</a></span>&#160;<a class="code" href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3">decodeBase58Token</a>(</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; s, <a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type)</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;{</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3">decodeBase58Token</a>(s, type, <a class="code" href="namespaceripple.html#a2d38d5713f432d9ad7bc8901edc7fdb2">rippleInverse</a>);</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160;}</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; </div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="namespaceripple.html#a12e4315aae2394e7dc58678d38a7a374"> 326</a></span>&#160;<a class="code" href="namespaceripple.html#a12e4315aae2394e7dc58678d38a7a374">decodeBase58TokenBitcoin</a>(</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; s, <a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">TokenType</a> type)</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160;{</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3">decodeBase58Token</a>(s, type, <a class="code" href="namespaceripple.html#ac1fa41b375c9cfe0b30074df1a59d56f">bitcoinInverse</a>);</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160;}</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; </div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160;} <span class="comment">// ripple</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespaceripple_html_a3035f4e3bae8ace089316e36629d8e0b"><div class="ttname"><a href="namespaceripple.html#a3035f4e3bae8ace089316e36629d8e0b">ripple::decodeBase58</a></div><div class="ttdeci">static std::string decodeBase58(std::string const &amp;s, InverseArray const &amp;inv)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00206">tokens.cpp:206</a></div></div>
<div class="ttc" id="anamespaceripple_html_ac1fa41b375c9cfe0b30074df1a59d56f"><div class="ttname"><a href="namespaceripple.html#ac1fa41b375c9cfe0b30074df1a59d56f">ripple::bitcoinInverse</a></div><div class="ttdeci">static InverseAlphabet bitcoinInverse(bitcoinAlphabet)</div></div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="aequal_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/equal.html">std::equal</a></div><div class="ttdeci">T equal(T... args)</div></div>
<div class="ttc" id="anamespaceripple_html_aa0d412b8937660a0a98f1df59fa6ea4e"><div class="ttname"><a href="namespaceripple.html#aa0d412b8937660a0a98f1df59fa6ea4e">ripple::base58EncodeToken</a></div><div class="ttdeci">std::string base58EncodeToken(TokenType type, void const *token, std::size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00182">tokens.cpp:182</a></div></div>
<div class="ttc" id="anamespaceripple_html_a2d38d5713f432d9ad7bc8901edc7fdb2"><div class="ttname"><a href="namespaceripple.html#a2d38d5713f432d9ad7bc8901edc7fdb2">ripple::rippleInverse</a></div><div class="ttdeci">static InverseAlphabet rippleInverse(rippleAlphabet)</div></div>
<div class="ttc" id="autility_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/utility.html">utility</a></div></div>
<div class="ttc" id="acstring_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a></div></div>
<div class="ttc" id="areserve_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/reserve.html">std::string::reserve</a></div><div class="ttdeci">T reserve(T... args)</div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/vector.html">vector</a></div></div>
<div class="ttc" id="afind_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/find.html">std::find_if</a></div><div class="ttdeci">T find_if(T... args)</div></div>
<div class="ttc" id="asize_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array/size.html">std::array::size</a></div><div class="ttdeci">T size(T... args)</div></div>
<div class="ttc" id="aclassripple_1_1InverseAlphabet_html_a5e5abf956be5969ea0042985ac9a2226"><div class="ttname"><a href="classripple_1_1InverseAlphabet.html#a5e5abf956be5969ea0042985ac9a2226">ripple::InverseAlphabet::InverseAlphabet</a></div><div class="ttdeci">InverseAlphabet(std::string const &amp;digits)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00297">tokens.cpp:297</a></div></div>
<div class="ttc" id="afill_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/fill.html">std::fill</a></div><div class="ttdeci">T fill(T... args)</div></div>
<div class="ttc" id="apush_back_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/push_back.html">std::string::push_back</a></div><div class="ttdeci">T push_back(T... args)</div></div>
<div class="ttc" id="anamespaceripple_html_a91e9fe7a4e92dba79c3812fd3edcaacc"><div class="ttname"><a href="namespaceripple.html#a91e9fe7a4e92dba79c3812fd3edcaacc">ripple::digest</a></div><div class="ttdeci">static Hasher::result_type digest(void const *data, std::size_t size) noexcept</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00044">tokens.cpp:44</a></div></div>
<div class="ttc" id="aclassripple_1_1InverseAlphabet_html"><div class="ttname"><a href="classripple_1_1InverseAlphabet.html">ripple::InverseAlphabet</a></div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00290">tokens.cpp:290</a></div></div>
<div class="ttc" id="anamespaceripple_html_a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275"><div class="ttname"><a href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">ripple::QualityDirection::out</a></div><div class="ttdeci">@ out</div></div>
<div class="ttc" id="anamespaceripple_html_a1bf8df553d36589191c8057c136cce03"><div class="ttname"><a href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03">ripple::TokenType</a></div><div class="ttdeci">TokenType</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8h_source.html#l00029">tokens.h:29</a></div></div>
<div class="ttc" id="aenable_if_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a></div></div>
<div class="ttc" id="ac_str_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/c_str.html">std::string::c_str</a></div><div class="ttdeci">T c_str(T... args)</div></div>
<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint8_t</a></div></div>
<div class="ttc" id="anamespaceripple_html_aa90b7850effa1efb50a9121eec005a80"><div class="ttname"><a href="namespaceripple.html#aa90b7850effa1efb50a9121eec005a80">ripple::bitcoinAlphabet</a></div><div class="ttdeci">static char bitcoinAlphabet[]</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00036">tokens.cpp:36</a></div></div>
<div class="ttc" id="amemory_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/memory.html">memory</a></div></div>
<div class="ttc" id="anamespaceripple_html_a1340479593e450b7e785a9890ae6db87"><div class="ttname"><a href="namespaceripple.html#a1340479593e450b7e785a9890ae6db87">ripple::base58EncodeTokenBitcoin</a></div><div class="ttdeci">std::string base58EncodeTokenBitcoin(TokenType type, void const *token, std::size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00189">tokens.cpp:189</a></div></div>
<div class="ttc" id="arend_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/rend.html">std::vector::rend</a></div><div class="ttdeci">T rend(T... args)</div></div>
<div class="ttc" id="asubstr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/substr.html">std::string::substr</a></div><div class="ttdeci">T substr(T... args)</div></div>
<div class="ttc" id="anamespaceripple_html_acd04261400a2d3beb5986da2e26ed0b4"><div class="ttname"><a href="namespaceripple.html#acd04261400a2d3beb5986da2e26ed0b4">ripple::digest2</a></div><div class="ttdeci">static Hasher::result_type digest2(Args const &amp;... args)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00065">tokens.cpp:65</a></div></div>
<div class="ttc" id="aclassripple_1_1InverseAlphabet_html_af4bde2aa306ecece6de3ea039f851b94"><div class="ttname"><a href="classripple_1_1InverseAlphabet.html#af4bde2aa306ecece6de3ea039f851b94">ripple::InverseAlphabet::map_</a></div><div class="ttdeci">std::array&lt; int, 256 &gt; map_</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00293">tokens.cpp:293</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
<div class="ttc" id="anamespaceripple_html_aab866392930125a4cb3c96277003f6c8"><div class="ttname"><a href="namespaceripple.html#aab866392930125a4cb3c96277003f6c8">ripple::rippleAlphabet</a></div><div class="ttdeci">static char rippleAlphabet[]</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00033">tokens.cpp:33</a></div></div>
<div class="ttc" id="aclassripple_1_1InverseAlphabet_html_a4b7fc29707a3775b6314c6510190b763"><div class="ttname"><a href="classripple_1_1InverseAlphabet.html#a4b7fc29707a3775b6314c6510190b763">ripple::InverseAlphabet::operator[]</a></div><div class="ttdeci">int operator[](char c) const</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00307">tokens.cpp:307</a></div></div>
<div class="ttc" id="anamespaceripple_html_a0a43093d095ea2ef5b027170a9348cd3"><div class="ttname"><a href="namespaceripple.html#a0a43093d095ea2ef5b027170a9348cd3">ripple::encodeBase58</a></div><div class="ttdeci">static std::string encodeBase58(void const *message, std::size_t size, void *temp, std::size_t temp_size, char const *const alphabet)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00104">tokens.cpp:104</a></div></div>
<div class="ttc" id="abegin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/begin.html">std::vector::begin</a></div><div class="ttdeci">T begin(T... args)</div></div>
<div class="ttc" id="anamespaceripple_html_af0519143c57504d84138b6b4dd013fe3"><div class="ttname"><a href="namespaceripple.html#af0519143c57504d84138b6b4dd013fe3">ripple::decodeBase58Token</a></div><div class="ttdeci">static std::string decodeBase58Token(std::string const &amp;s, TokenType type, InverseArray const &amp;inv)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00264">tokens.cpp:264</a></div></div>
<div class="ttc" id="acassert_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a></div></div>
<div class="ttc" id="anamespaceripple_html_a257e6f31c4383d21b9309a2b50d24883"><div class="ttname"><a href="namespaceripple.html#a257e6f31c4383d21b9309a2b50d24883">ripple::checksum</a></div><div class="ttdeci">void checksum(void *out, void const *message, std::size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00081">tokens.cpp:81</a></div></div>
<div class="ttc" id="aassign_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/assign.html">std::string::assign</a></div><div class="ttdeci">T assign(T... args)</div></div>
<div class="ttc" id="asize_t_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div></div>
<div class="ttc" id="amemcpy_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/byte/memcpy.html">std::memcpy</a></div><div class="ttdeci">T memcpy(T... args)</div></div>
<div class="ttc" id="aend_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/end.html">std::vector::end</a></div><div class="ttdeci">T end(T... args)</div></div>
<div class="ttc" id="anamespaceripple_html_a12e4315aae2394e7dc58678d38a7a374"><div class="ttname"><a href="namespaceripple.html#a12e4315aae2394e7dc58678d38a7a374">ripple::decodeBase58TokenBitcoin</a></div><div class="ttdeci">std::string decodeBase58TokenBitcoin(std::string const &amp;s, TokenType type)</div><div class="ttdoc">Decode a Base58 token using Bitcoin alphabet.</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00326">tokens.cpp:326</a></div></div>
<div class="ttc" id="adata_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array/data.html">std::array::data</a></div><div class="ttdeci">T data(T... args)</div></div>
<div class="ttc" id="atype_traits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a></div></div>
<div class="ttc" id="anamespaceripple_html_a62056a38f7d19614cddbabeb5783ebac"><div class="ttname"><a href="namespaceripple.html#a62056a38f7d19614cddbabeb5783ebac">ripple::encodeToken</a></div><div class="ttdeci">static std::string encodeToken(TokenType type, void const *token, std::size_t size, char const *const alphabet)</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00155">tokens.cpp:155</a></div></div>
<div class="ttc" id="arbegin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/rbegin.html">std::vector::rbegin</a></div><div class="ttdeci">T rbegin(T... args)</div></div>
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