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nbougalis
2022-08-26 20:04:15 +00:00
parent 535a1b2d41
commit 38a7cd20fe
3544 changed files with 52858 additions and 55020 deletions
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AccountID_8cpp_source.html
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@@ -88,183 +88,224 @@ $(function() {
<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/protocol/AccountID.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/PublicKey.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;ripple/protocol/tokens.h&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/cstring.html">cstring</a>&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</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="l00029"></a><span class="lineno"><a class="line" href="namespaceripple.html#a08a13b62b18272366f788632359e8793"> 29</a></span>&#160;<a class="code" href="namespaceripple.html#a08a13b62b18272366f788632359e8793">toBase58</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span>&amp; v)</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="keywordflow">return</span> <a class="code" href="namespaceripple.html#a4c70c1f85ccff1b830f4bda1becb21b4">encodeBase58Token</a>(<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">TokenType::AccountID</a>, v.<a class="code" href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">data</a>(), v.<a class="code" href="classripple_1_1base__uint.html#adbe18ef92b677603e8539b3a77c064b0">size</a>());</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;}</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/hardened_hash.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/spinlock.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/AccountID.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/PublicKey.h&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/digest.h&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/tokens.h&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/array.html">array</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/cstring.html">cstring</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/mutex.html">mutex</a>&gt;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="keyword">namespace </span>detail {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;AccountID&gt;</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a"> 36</a></span>&#160;<a class="code" href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a">parseBase58</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="l00037"></a><span class="lineno"> 37</span>&#160;{</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> result = <a class="code" href="namespaceripple.html#a9952e5a413358e9a647b31c86c5835ff">decodeBase58Token</a>(s, <a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">TokenType::AccountID</a>);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keywordflow">if</span> (result.size() != <a class="code" href="classripple_1_1base__uint.html#a4b9e8d36a37963d48be8f081d99257bf">AccountID::bytes</a>)</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordflow">return</span> std::nullopt;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a>{result};</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;}</div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html"> 35</a></span>&#160;<span class="keyword">class </span><a class="code" href="classripple_1_1detail_1_1AccountIdCache.html">AccountIdCache</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;{</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html"> 38</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html">CachedAccountID</a></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; {</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#a37190d7f261db899b8e5cc2d7ca840c5"> 40</a></span>&#160; <a class="code" href="classripple_1_1base__uint.html">AccountID</a> <a class="code" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#a37190d7f261db899b8e5cc2d7ca840c5">id</a>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#ab5e17c55b3329e1a03459c36a274b825"> 41</a></span>&#160; <span class="keywordtype">char</span> <a class="code" href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#ab5e17c55b3329e1a03459c36a274b825">encoding</a>[40] = {0};</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; };</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment"> Calculation of the Account ID</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment"> The AccountID is a 160-bit identifier that uniquely</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment"> distinguishes an account. The account may or may not</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment"> exist in the ledger. Even for accounts that are not in</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"> the ledger, cryptographic operations may be performed</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"> which affect the ledger. For example, designating an</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"> account not in the ledger as a regular key for an</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"> account that is in the ledger.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> Why did we use half of SHA512 for most things but then</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment"> SHA256 followed by RIPEMD160 for account IDs? Why didn&#39;t</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment"> we do SHA512 half then RIPEMD160? Or even SHA512 then RIPEMD160?</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment"> For that matter why RIPEMD160 at all why not just SHA512 and keep</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment"> only 160 bits?</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment"> Answer (David Schwartz):</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment"> The short answer is that we kept Bitcoin&#39;s behavior.</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"> The longer answer was that:</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment"> 1) Using a single hash could leave ripple</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment"> vulnerable to length extension attacks.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="comment"> 2) Only RIPEMD160 is generally considered safe at 160 bits.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment"> Any of those schemes would have been acceptable. However,</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"> the one chosen avoids any need to defend the scheme chosen.</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> (Against any criticism other than unnecessary complexity.)</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> &quot;The historical reason was that in the very early days,</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"> we wanted to give people as few ways to argue that we were</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment"> less secure than Bitcoin. So where there was no good reason</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment"> to change something, it was not changed.&quot;</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a></div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5"> 80</a></span>&#160;<a class="code" href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5">calcAccountID</a>(<a class="code" href="classripple_1_1PublicKey.html">PublicKey</a> <span class="keyword">const</span>&amp; pk)</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;{</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; static_assert(<a class="code" href="classripple_1_1base__uint.html#a4b9e8d36a37963d48be8f081d99257bf">AccountID::bytes</a> == <span class="keyword">sizeof</span>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">ripesha_hasher::result_type</a>));</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <a class="code" href="structripple_1_1ripesha__hasher.html">ripesha_hasher</a> rsh;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; rsh(pk.<a class="code" href="classripple_1_1PublicKey.html#a46e654e5021f7a037dbacd14db86fc5e">data</a>(), pk.<a class="code" href="classripple_1_1PublicKey.html#a663437215503b159ed33b1664e4213a3">size</a>());</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a>{<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">ripesha_hasher::result_type</a><span class="keyword">&gt;</span>(rsh)};</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;}</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;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a> <span class="keyword">const</span>&amp;</div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0"> 90</a></span>&#160;<a class="code" href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0">xrpAccount</a>()</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="keyword">static</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span> account(beast::zero);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">return</span> account;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;}</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="comment">// The actual cache</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b"> 45</a></span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;CachedAccountID&gt;</a> <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="comment">// We use a hash function designed to resist algorithmic complexity attacks</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html#a89e8a4a2d59fd222b3915ae5614c0452"> 48</a></span>&#160; <a class="code" href="classripple_1_1hardened__hash.html">hardened_hash&lt;&gt;</a> <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#a89e8a4a2d59fd222b3915ae5614c0452">hasher_</a>;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="comment">// 64 spinlocks, packed into a single 64-bit value</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html#ae50ec081d3387900b5decb553e61a5b2"> 51</a></span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/atomic/atomic.html">std::atomic&lt;std::uint64_t&gt;</a> <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#ae50ec081d3387900b5decb553e61a5b2">locks_</a> = 0;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html#a7233e0e35d6a1c46fe5a023a947188a5"> 54</a></span>&#160; <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#a7233e0e35d6a1c46fe5a023a947188a5">AccountIdCache</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> count) : <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>(count)</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="comment">// This is non-binding, but we try to avoid wasting memory that</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="comment">// is caused by overallocation.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>.shrink_to_fit();</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; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classripple_1_1detail_1_1AccountIdCache.html#a6737ae220bf5ede07e1f39727aba9e49"> 62</a></span>&#160; <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#a6737ae220bf5ede07e1f39727aba9e49">toBase58</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span>&amp; <span class="keywordtype">id</span>)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> index = <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#a89e8a4a2d59fd222b3915ae5614c0452">hasher_</a>(<span class="keywordtype">id</span>) % <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>.size();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="classripple_1_1packed__spinlock.html">packed_spinlock</a> sl(<a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#ae50ec081d3387900b5decb553e61a5b2">locks_</a>, index % 64);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> lock(sl);</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">// The check against the first character of the encoding ensures</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="comment">// that we don&#39;t mishandle the case of the all-zero account:</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>[index].encoding[0] != 0 &amp;&amp; <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>[index].<span class="keywordtype">id</span> == <span class="keywordtype">id</span>)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>[index].encoding;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keyword">auto</span> ret =</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <a class="code" href="namespaceripple.html#a4c70c1f85ccff1b830f4bda1becb21b4">encodeBase58Token</a>(<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">TokenType::AccountID</a>, <span class="keywordtype">id</span>.data(), <span class="keywordtype">id</span>.size());</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; assert(ret.size() &lt;= 38);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> lock(sl);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>[index].id = id;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/byte/strcpy.html">std::strcpy</a>(<a class="code" href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">cache_</a>[index].encoding, ret.c_str());</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> ret;</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;};</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">// namespace detail</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7"> 94</a></span>&#160;<span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/unique_ptr.html">std::unique_ptr&lt;detail::AccountIdCache&gt;</a> <a class="code" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">accountIdCache</a>;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a> <span class="keyword">const</span>&amp;</div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6"> 97</a></span>&#160;<a class="code" href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6">noAccount</a>()</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="namespaceripple.html#a4b64fe6c72a48b5f30ea74a07fa95716"> 97</a></span>&#160;<a class="code" href="namespaceripple.html#a4b64fe6c72a48b5f30ea74a07fa95716">initAccountIdCache</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> count)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;{</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keyword">static</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span> account(1);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> account;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">accountIdCache</a> &amp;&amp; count != 0)</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <a class="code" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">accountIdCache</a> = std::make_unique&lt;detail::AccountIdCache&gt;(count);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;}</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="keywordtype">bool</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e"> 104</a></span>&#160;<a class="code" href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e">to_issuer</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a>&amp; issuer, <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="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#a08a13b62b18272366f788632359e8793"> 104</a></span>&#160;<a class="code" href="namespaceripple.html#a08a13b62b18272366f788632359e8793">toBase58</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span>&amp; v)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;{</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordflow">if</span> (issuer.<a class="code" href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">parseHex</a>(s))</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> account = parseBase58&lt;AccountID&gt;(s);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">if</span> (!account)</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; issuer = *account;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;}</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment">/* VFALCO NOTE</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment"> An alternate implementation could use a pair of insert-only</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment"> hash maps that each use a single large memory allocation</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment"> to store a fixed size hash table and all of the AccountID/string</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="comment"> pairs laid out in memory (wouldn&#39;t use std::string here just a</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment"> length prefixed or zero terminated array). Possibly using</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment"> boost::intrusive as the basis for the unordered container.</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> This would cut down to one allocate/free cycle per swap of</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"> the map.</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; </div>
<div class="line"><a name="l00128"></a><span class="lineno"><a class="line" href="classripple_1_1AccountIDCache.html#a5e4bab5c5b62a9db7e5c866677500dd6"> 128</a></span>&#160;<a class="code" href="classripple_1_1AccountIDCache.html#aa85c90f69b07dabacc652080e04d7a41">AccountIDCache::AccountIDCache</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> capacity) : capacity_(capacity)</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;{</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.reserve(<a class="code" href="classripple_1_1AccountIDCache.html#a1468b730efd9722a1a55ff81f0c59b94">capacity_</a>);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;}</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</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="l00134"></a><span class="lineno"><a class="line" href="classripple_1_1AccountIDCache.html#a7c3b7a60b432ff4dcb87dcde20c61c02"> 134</a></span>&#160;<a class="code" href="classripple_1_1AccountIDCache.html#a7c3b7a60b432ff4dcb87dcde20c61c02">AccountIDCache::toBase58</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span>&amp; <span class="keywordtype">id</span>)<span class="keyword"> const</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> lock(<a class="code" href="classripple_1_1AccountIDCache.html#a31116ba6b6e77fc075c80e746be57446">mutex_</a>);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keyword">auto</span> iter = <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.find(<span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keywordflow">if</span> (iter != <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.end())</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keywordflow">return</span> iter-&gt;second;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; iter = <a class="code" href="classripple_1_1AccountIDCache.html#a945faf739aff5dd35d9f3c7c0bfe4a41">m0_</a>.find(<span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</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="l00142"></a><span class="lineno"> 142</span>&#160; <span class="keywordflow">if</span> (iter != <a class="code" href="classripple_1_1AccountIDCache.html#a945faf739aff5dd35d9f3c7c0bfe4a41">m0_</a>.end())</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; result = iter-&gt;second;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="comment">// Can use insert-only hash maps if</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="comment">// we didn&#39;t erase from here.</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a945faf739aff5dd35d9f3c7c0bfe4a41">m0_</a>.erase(iter);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; result = <a class="code" href="namespaceripple.html#a08a13b62b18272366f788632359e8793">ripple::toBase58</a>(<span class="keywordtype">id</span>);</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="keywordflow">if</span> (<a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.size() &gt;= <a class="code" href="classripple_1_1AccountIDCache.html#a1468b730efd9722a1a55ff81f0c59b94">capacity_</a>)</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a945faf739aff5dd35d9f3c7c0bfe4a41">m0_</a> = std::move(<a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.clear();</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.reserve(<a class="code" href="classripple_1_1AccountIDCache.html#a1468b730efd9722a1a55ff81f0c59b94">capacity_</a>);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <a class="code" href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">m1_</a>.emplace(<span class="keywordtype">id</span>, result);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;}</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;} <span class="comment">// namespace ripple</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">accountIdCache</a>)</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">accountIdCache</a>-&gt;toBase58(v);</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="keywordflow">return</span> <a class="code" href="namespaceripple.html#a4c70c1f85ccff1b830f4bda1becb21b4">encodeBase58Token</a>(<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">TokenType::AccountID</a>, v.<a class="code" href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">data</a>(), v.<a class="code" href="classripple_1_1base__uint.html#adbe18ef92b677603e8539b3a77c064b0">size</a>());</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;}</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="keyword">template</span> &lt;&gt;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;AccountID&gt;</a></div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a"> 114</a></span>&#160;<a class="code" href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a">parseBase58</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="l00115"></a><span class="lineno"> 115</span>&#160;{</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> result = <a class="code" href="namespaceripple.html#a9952e5a413358e9a647b31c86c5835ff">decodeBase58Token</a>(s, <a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">TokenType::AccountID</a>);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">if</span> (result.size() != <a class="code" href="classripple_1_1base__uint.html#a4b9e8d36a37963d48be8f081d99257bf">AccountID::bytes</a>)</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keywordflow">return</span> std::nullopt;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a>{result};</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;}</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> Calculation of the Account ID</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment"> The AccountID is a 160-bit identifier that uniquely</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="comment"> distinguishes an account. The account may or may not</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment"> exist in the ledger. Even for accounts that are not in</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment"> the ledger, cryptographic operations may be performed</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment"> which affect the ledger. For example, designating an</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment"> account not in the ledger as a regular key for an</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment"> account that is in the ledger.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment"> Why did we use half of SHA512 for most things but then</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment"> SHA256 followed by RIPEMD160 for account IDs? Why didn&#39;t</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment"> we do SHA512 half then RIPEMD160? Or even SHA512 then RIPEMD160?</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="comment"> For that matter why RIPEMD160 at all why not just SHA512 and keep</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="comment"> only 160 bits?</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment"> Answer (David Schwartz):</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="comment"> The short answer is that we kept Bitcoin&#39;s behavior.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment"> The longer answer was that:</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment"> 1) Using a single hash could leave ripple</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment"> vulnerable to length extension attacks.</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment"> 2) Only RIPEMD160 is generally considered safe at 160 bits.</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment"> Any of those schemes would have been acceptable. However,</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment"> the one chosen avoids any need to defend the scheme chosen.</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"> (Against any criticism other than unnecessary complexity.)</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment"> &quot;The historical reason was that in the very early days,</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment"> we wanted to give people as few ways to argue that we were</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment"> less secure than Bitcoin. So where there was no good reason</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment"> to change something, it was not changed.&quot;</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a></div>
<div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5"> 158</a></span>&#160;<a class="code" href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5">calcAccountID</a>(<a class="code" href="classripple_1_1PublicKey.html">PublicKey</a> <span class="keyword">const</span>&amp; pk)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;{</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; static_assert(<a class="code" href="classripple_1_1base__uint.html#a4b9e8d36a37963d48be8f081d99257bf">AccountID::bytes</a> == <span class="keyword">sizeof</span>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">ripesha_hasher::result_type</a>));</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <a class="code" href="structripple_1_1ripesha__hasher.html">ripesha_hasher</a> rsh;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; rsh(pk.<a class="code" href="classripple_1_1PublicKey.html#a46e654e5021f7a037dbacd14db86fc5e">data</a>(), pk.<a class="code" href="classripple_1_1PublicKey.html#a663437215503b159ed33b1664e4213a3">size</a>());</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a>{<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/container/array.html">ripesha_hasher::result_type</a><span class="keyword">&gt;</span>(rsh)};</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; </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a> <span class="keyword">const</span>&amp;</div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0"> 168</a></span>&#160;<a class="code" href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0">xrpAccount</a>()</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;{</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="keyword">static</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span> account(beast::zero);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">return</span> account;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;}</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<a class="code" href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">AccountID</a> <span class="keyword">const</span>&amp;</div>
<div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6"> 175</a></span>&#160;<a class="code" href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6">noAccount</a>()</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;{</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keyword">static</span> <a class="code" href="classripple_1_1base__uint.html">AccountID</a> <span class="keyword">const</span> account(1);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordflow">return</span> account;</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;<span class="keywordtype">bool</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e"> 182</a></span>&#160;<a class="code" href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e">to_issuer</a>(<a class="code" href="classripple_1_1base__uint.html">AccountID</a>&amp; issuer, <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="l00183"></a><span class="lineno"> 183</span>&#160;{</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keywordflow">if</span> (issuer.<a class="code" href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">parseHex</a>(s))</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keyword">auto</span> <span class="keyword">const</span> account = parseBase58&lt;AccountID&gt;(s);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordflow">if</span> (!account)</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; issuer = *account;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</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; </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;} <span class="comment">// namespace ripple</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aclassripple_1_1PublicKey_html_a46e654e5021f7a037dbacd14db86fc5e"><div class="ttname"><a href="classripple_1_1PublicKey.html#a46e654e5021f7a037dbacd14db86fc5e">ripple::PublicKey::data</a></div><div class="ttdeci">std::uint8_t const * data() const noexcept</div><div class="ttdef"><b>Definition:</b> <a href="PublicKey_8h_source.html#l00081">PublicKey.h:81</a></div></div>
<div class="ttc" id="astrcpy_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/byte/strcpy.html">std::strcpy</a></div><div class="ttdeci">T strcpy(T... args)</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="acstring_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_a1468b730efd9722a1a55ff81f0c59b94"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#a1468b730efd9722a1a55ff81f0c59b94">ripple::AccountIDCache::capacity_</a></div><div class="ttdeci">std::size_t capacity_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8h_source.html#l00122">AccountID.h:122</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_aa85c90f69b07dabacc652080e04d7a41"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#aa85c90f69b07dabacc652080e04d7a41">ripple::AccountIDCache::AccountIDCache</a></div><div class="ttdeci">AccountIDCache(AccountIDCache const &amp;)=delete</div></div>
<div class="ttc" id="anamespaceripple_html_a08a13b62b18272366f788632359e8793"><div class="ttname"><a href="namespaceripple.html#a08a13b62b18272366f788632359e8793">ripple::toBase58</a></div><div class="ttdeci">std::string toBase58(AccountID const &amp;v)</div><div class="ttdoc">Convert AccountID to base58 checked string.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00029">AccountID.cpp:29</a></div></div>
<div class="ttc" id="aclassripple_1_1detail_1_1AccountIdCache_html_a7233e0e35d6a1c46fe5a023a947188a5"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html#a7233e0e35d6a1c46fe5a023a947188a5">ripple::detail::AccountIdCache::AccountIdCache</a></div><div class="ttdeci">AccountIdCache(std::size_t count)</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00054">AccountID.cpp:54</a></div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="astructripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID_html"><div class="ttname"><a href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html">ripple::detail::AccountIdCache::CachedAccountID</a></div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00038">AccountID.cpp:38</a></div></div>
<div class="ttc" id="anamespaceripple_html_a08a13b62b18272366f788632359e8793"><div class="ttname"><a href="namespaceripple.html#a08a13b62b18272366f788632359e8793">ripple::toBase58</a></div><div class="ttdeci">std::string toBase58(AccountID const &amp;v)</div><div class="ttdoc">Convert AccountID to base58 checked string.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00104">AccountID.cpp:104</a></div></div>
<div class="ttc" id="anamespaceripple_html_a9952e5a413358e9a647b31c86c5835ff"><div class="ttname"><a href="namespaceripple.html#a9952e5a413358e9a647b31c86c5835ff">ripple::decodeBase58Token</a></div><div class="ttdeci">std::string decodeBase58Token(std::string const &amp;s, TokenType type)</div><div class="ttdoc">Decode a token of given type encoded using Base58Check and the XRPL alphabet.</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00223">tokens.cpp:223</a></div></div>
<div class="ttc" id="alock_guard_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html_a5342507fe2fb5ac55d578e7e98863f70"><div class="ttname"><a href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">ripple::base_uint::data</a></div><div class="ttdeci">pointer data()</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00121">base_uint.h:121</a></div></div>
<div class="ttc" id="astructripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID_html_a37190d7f261db899b8e5cc2d7ca840c5"><div class="ttname"><a href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#a37190d7f261db899b8e5cc2d7ca840c5">ripple::detail::AccountIdCache::CachedAccountID::id</a></div><div class="ttdeci">AccountID id</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00040">AccountID.cpp:40</a></div></div>
<div class="ttc" id="anamespaceripple_html_a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405"><div class="ttname"><a href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03aba430b63631349ab773285535e878405">ripple::TokenType::AccountID</a></div><div class="ttdeci">@ AccountID</div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html_adbe18ef92b677603e8539b3a77c064b0"><div class="ttname"><a href="classripple_1_1base__uint.html#adbe18ef92b677603e8539b3a77c064b0">ripple::base_uint::size</a></div><div class="ttdeci">constexpr static std::size_t size()</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00518">base_uint.h:518</a></div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html"><div class="ttname"><a href="classripple_1_1base__uint.html">ripple::base_uint</a></div><div class="ttdoc">Integers of any length that is a multiple of 32-bits.</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00081">base_uint.h:81</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_a9963e4fa249bf87fd0fd5c1baefd7741"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#a9963e4fa249bf87fd0fd5c1baefd7741">ripple::AccountIDCache::m1_</a></div><div class="ttdeci">hash_map&lt; AccountID, std::string &gt; m1_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8h_source.html#l00124">AccountID.h:124</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_a31116ba6b6e77fc075c80e746be57446"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#a31116ba6b6e77fc075c80e746be57446">ripple::AccountIDCache::mutex_</a></div><div class="ttdeci">std::mutex mutex_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8h_source.html#l00121">AccountID.h:121</a></div></div>
<div class="ttc" id="aclassripple_1_1detail_1_1AccountIdCache_html"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html">ripple::detail::AccountIdCache</a></div><div class="ttdoc">Caches the base58 representations of AccountIDs.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00035">AccountID.cpp:35</a></div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html"><div class="ttname"><a href="classripple_1_1base__uint.html">ripple::base_uint&lt; 160, detail::AccountIDTag &gt;</a></div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html_a4b9e8d36a37963d48be8f081d99257bf"><div class="ttname"><a href="classripple_1_1base__uint.html#a4b9e8d36a37963d48be8f081d99257bf">ripple::base_uint&lt; 160, detail::AccountIDTag &gt;::bytes</a></div><div class="ttdeci">static constexpr std::size_t bytes</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00104">base_uint.h:104</a></div></div>
<div class="ttc" id="astructripple_1_1ripesha__hasher_html"><div class="ttname"><a href="structripple_1_1ripesha__hasher.html">ripple::ripesha_hasher</a></div><div class="ttdoc">Returns the RIPEMD-160 digest of the SHA256 hash of the message.</div><div class="ttdef"><b>Definition:</b> <a href="digest_8h_source.html#l00131">digest.h:131</a></div></div>
<div class="ttc" id="aclassripple_1_1packed__spinlock_html"><div class="ttname"><a href="classripple_1_1packed__spinlock.html">ripple::packed_spinlock</a></div><div class="ttdoc">Classes to handle arrays of spinlocks packed into a single atomic integer:</div><div class="ttdef"><b>Definition:</b> <a href="spinlock_8h_source.html#l00089">spinlock.h:89</a></div></div>
<div class="ttc" id="aclassripple_1_1PublicKey_html"><div class="ttname"><a href="classripple_1_1PublicKey.html">ripple::PublicKey</a></div><div class="ttdoc">A public key.</div><div class="ttdef"><b>Definition:</b> <a href="PublicKey_8h_source.html#l00059">PublicKey.h:59</a></div></div>
<div class="ttc" id="aclassripple_1_1PublicKey_html_a663437215503b159ed33b1664e4213a3"><div class="ttname"><a href="classripple_1_1PublicKey.html#a663437215503b159ed33b1664e4213a3">ripple::PublicKey::size</a></div><div class="ttdeci">std::size_t size() const noexcept</div><div class="ttdef"><b>Definition:</b> <a href="PublicKey_8h_source.html#l00087">PublicKey.h:87</a></div></div>
<div class="ttc" id="anamespaceripple_html_a614d8681c8dff84ac2257939751987c5"><div class="ttname"><a href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5">ripple::calcAccountID</a></div><div class="ttdeci">AccountID calcAccountID(PublicKey const &amp;pk)</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00080">AccountID.cpp:80</a></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="anamespaceripple_html_a21696ba0d0fac348f88f1b9da51091b0"><div class="ttname"><a href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0">ripple::xrpAccount</a></div><div class="ttdeci">AccountID const &amp; xrpAccount()</div><div class="ttdoc">Compute AccountID from public key.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00090">AccountID.cpp:90</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_a945faf739aff5dd35d9f3c7c0bfe4a41"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#a945faf739aff5dd35d9f3c7c0bfe4a41">ripple::AccountIDCache::m0_</a></div><div class="ttdeci">hash_map&lt; AccountID, std::string &gt; m0_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8h_source.html#l00123">AccountID.h:123</a></div></div>
<div class="ttc" id="aclassripple_1_1detail_1_1AccountIdCache_html_a6737ae220bf5ede07e1f39727aba9e49"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html#a6737ae220bf5ede07e1f39727aba9e49">ripple::detail::AccountIdCache::toBase58</a></div><div class="ttdeci">std::string toBase58(AccountID const &amp;id)</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00062">AccountID.cpp:62</a></div></div>
<div class="ttc" id="anamespaceripple_html_a614d8681c8dff84ac2257939751987c5"><div class="ttname"><a href="namespaceripple.html#a614d8681c8dff84ac2257939751987c5">ripple::calcAccountID</a></div><div class="ttdeci">AccountID calcAccountID(PublicKey const &amp;pk)</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00158">AccountID.cpp:158</a></div></div>
<div class="ttc" id="aclassripple_1_1detail_1_1AccountIdCache_html_ae50ec081d3387900b5decb553e61a5b2"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html#ae50ec081d3387900b5decb553e61a5b2">ripple::detail::AccountIdCache::locks_</a></div><div class="ttdeci">std::atomic&lt; std::uint64_t &gt; locks_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00051">AccountID.cpp:51</a></div></div>
<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/array.html">array</a></div></div>
<div class="ttc" id="anamespaceripple_html_a21696ba0d0fac348f88f1b9da51091b0"><div class="ttname"><a href="namespaceripple.html#a21696ba0d0fac348f88f1b9da51091b0">ripple::xrpAccount</a></div><div class="ttdeci">AccountID const &amp; xrpAccount()</div><div class="ttdoc">Compute AccountID from public key.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00168">AccountID.cpp:168</a></div></div>
<div class="ttc" id="aclassripple_1_1hardened__hash_html"><div class="ttname"><a href="classripple_1_1hardened__hash.html">ripple::hardened_hash</a></div><div class="ttdoc">Seed functor once per construction.</div><div class="ttdef"><b>Definition:</b> <a href="hardened__hash_8h_source.html#l00096">hardened_hash.h:96</a></div></div>
<div class="ttc" id="aatomic_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/atomic/atomic.html">std::atomic&lt; std::uint64_t &gt;</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_a4b64fe6c72a48b5f30ea74a07fa95716"><div class="ttname"><a href="namespaceripple.html#a4b64fe6c72a48b5f30ea74a07fa95716">ripple::initAccountIdCache</a></div><div class="ttdeci">void initAccountIdCache(std::size_t count)</div><div class="ttdoc">Initialize the global cache used to map AccountID to base58 conversions.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00097">AccountID.cpp:97</a></div></div>
<div class="ttc" id="anamespaceripple_html_a4c70c1f85ccff1b830f4bda1becb21b4"><div class="ttname"><a href="namespaceripple.html#a4c70c1f85ccff1b830f4bda1becb21b4">ripple::encodeBase58Token</a></div><div class="ttdeci">std::string encodeBase58Token(TokenType type, void const *token, std::size_t size)</div><div class="ttdoc">Encode data in Base58Check format using XRPL alphabet.</div><div class="ttdef"><b>Definition:</b> <a href="tokens_8cpp_source.html#l00199">tokens.cpp:199</a></div></div>
<div class="ttc" id="astructripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID_html_ab5e17c55b3329e1a03459c36a274b825"><div class="ttname"><a href="structripple_1_1detail_1_1AccountIdCache_1_1CachedAccountID.html#ab5e17c55b3329e1a03459c36a274b825">ripple::detail::AccountIdCache::CachedAccountID::encoding</a></div><div class="ttdeci">char encoding[40]</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00041">AccountID.cpp:41</a></div></div>
<div class="ttc" id="aoptional_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional</a></div></div>
<div class="ttc" id="amutex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a></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="aclassripple_1_1detail_1_1AccountIdCache_html_a89e8a4a2d59fd222b3915ae5614c0452"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html#a89e8a4a2d59fd222b3915ae5614c0452">ripple::detail::AccountIdCache::hasher_</a></div><div class="ttdeci">hardened_hash hasher_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00048">AccountID.cpp:48</a></div></div>
<div class="ttc" id="aclassripple_1_1detail_1_1AccountIdCache_html_abcab07160f2103c0e213c3235993458b"><div class="ttname"><a href="classripple_1_1detail_1_1AccountIdCache.html#abcab07160f2103c0e213c3235993458b">ripple::detail::AccountIdCache::cache_</a></div><div class="ttdeci">std::vector&lt; CachedAccountID &gt; cache_</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00045">AccountID.cpp:45</a></div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html_a698d3fd0c0f0155995c87d2f48ac90d5"><div class="ttname"><a href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">ripple::base_uint::parseHex</a></div><div class="ttdeci">constexpr bool parseHex(std::string_view sv)</div><div class="ttdoc">Parse a hex string into a base_uint.</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00495">base_uint.h:495</a></div></div>
<div class="ttc" id="anamespaceripple_html_a6ed6129376e1d37ef607c2697f5b9d6a"><div class="ttname"><a href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a">ripple::parseBase58</a></div><div class="ttdeci">std::optional&lt; AccountID &gt; parseBase58(std::string const &amp;s)</div><div class="ttdoc">Parse AccountID from checked, base58 string.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00036">AccountID.cpp:36</a></div></div>
<div class="ttc" id="anamespaceripple_html_a065cda95aed9cb1d66fb81cad0867ef6"><div class="ttname"><a href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6">ripple::noAccount</a></div><div class="ttdeci">AccountID const &amp; noAccount()</div><div class="ttdoc">A placeholder for empty accounts.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00097">AccountID.cpp:97</a></div></div>
<div class="ttc" id="anamespaceripple_html_a2f7698f565e77bb2e9e073143fdcc8f7"><div class="ttname"><a href="namespaceripple.html#a2f7698f565e77bb2e9e073143fdcc8f7">ripple::accountIdCache</a></div><div class="ttdeci">static std::unique_ptr&lt; detail::AccountIdCache &gt; accountIdCache</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00094">AccountID.cpp:94</a></div></div>
<div class="ttc" id="anamespaceripple_html_a6ed6129376e1d37ef607c2697f5b9d6a"><div class="ttname"><a href="namespaceripple.html#a6ed6129376e1d37ef607c2697f5b9d6a">ripple::parseBase58</a></div><div class="ttdeci">std::optional&lt; AccountID &gt; parseBase58(std::string const &amp;s)</div><div class="ttdoc">Parse AccountID from checked, base58 string.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00114">AccountID.cpp:114</a></div></div>
<div class="ttc" id="aunique_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/unique_ptr.html">std::unique_ptr</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="anamespaceripple_html_a065cda95aed9cb1d66fb81cad0867ef6"><div class="ttname"><a href="namespaceripple.html#a065cda95aed9cb1d66fb81cad0867ef6">ripple::noAccount</a></div><div class="ttdeci">AccountID const &amp; noAccount()</div><div class="ttdoc">A placeholder for empty accounts.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00175">AccountID.cpp:175</a></div></div>
<div class="ttc" id="anamespaceripple_html_a00ae0d729cb3e35b6bcac9a27ebb5284"><div class="ttname"><a href="namespaceripple.html#a00ae0d729cb3e35b6bcac9a27ebb5284">ripple::AccountID</a></div><div class="ttdeci">base_uint&lt; 160, detail::AccountIDTag &gt; AccountID</div><div class="ttdoc">A 160-bit unsigned that uniquely identifies an account.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8h_source.html#l00047">AccountID.h:47</a></div></div>
<div class="ttc" id="aclassripple_1_1AccountIDCache_html_a7c3b7a60b432ff4dcb87dcde20c61c02"><div class="ttname"><a href="classripple_1_1AccountIDCache.html#a7c3b7a60b432ff4dcb87dcde20c61c02">ripple::AccountIDCache::toBase58</a></div><div class="ttdeci">std::string toBase58(AccountID const &amp;) const</div><div class="ttdoc">Return ripple::toBase58 for the AccountID.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00134">AccountID.cpp:134</a></div></div>
<div class="ttc" id="anamespaceripple_html_a300af819bde0c7c49207d10cd787e62e"><div class="ttname"><a href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e">ripple::to_issuer</a></div><div class="ttdeci">bool to_issuer(AccountID &amp;, std::string const &amp;)</div><div class="ttdoc">Convert hex or base58 string to AccountID.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00104">AccountID.cpp:104</a></div></div>
<div class="ttc" id="anamespaceripple_html_a300af819bde0c7c49207d10cd787e62e"><div class="ttname"><a href="namespaceripple.html#a300af819bde0c7c49207d10cd787e62e">ripple::to_issuer</a></div><div class="ttdeci">bool to_issuer(AccountID &amp;, std::string const &amp;)</div><div class="ttdoc">Convert hex or base58 string to AccountID.</div><div class="ttdef"><b>Definition:</b> <a href="AccountID_8cpp_source.html#l00182">AccountID.cpp:182</a></div></div>
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