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<a href="hash_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2013-2015 The Bitcoin Core developers</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Distributed under the MIT software license, see the accompanying</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "<a class="code" href="hash_8h.html">hash.h</a>"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="common_8h.html">crypto/common.h</a>"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "<a class="code" href="hmac__sha512_8h.html">crypto/hmac_sha512.h</a>"</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="pubkey_8h.html">pubkey.h</a>"</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"><a class="line" href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0"> 11</a></span> <span class="keyword">inline</span> uint32_t <a class="code" href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0">ROTL32</a>(uint32_t x, int8_t r)</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> {</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <span class="keywordflow">return</span> (x << r) | (x >> (32 - r));</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> }</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="hash_8h.html#a3cf0406d24590eaad9a3163c552e9730"> 16</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="hash_8cpp.html#a3cf0406d24590eaad9a3163c552e9730">MurmurHash3</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nHashSeed, <span class="keyword">const</span> std::vector<unsigned char>& vDataToHash)</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <span class="comment">// The following is MurmurHash3 (x86_32), see http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  uint32_t h1 = nHashSeed;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">if</span> (vDataToHash.size() > 0)</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  {</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">const</span> uint32_t c1 = 0xcc9e2d51;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keyword">const</span> uint32_t c2 = 0x1b873593;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> nblocks = vDataToHash.size() / 4;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="comment">//----------</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="comment">// body</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">const</span> uint8_t* blocks = &vDataToHash[0] + nblocks * 4;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = -nblocks; i; i++) {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  uint32_t k1 = <a class="code" href="common_8h.html#a95b035f2729461d80d2f09d776ea07d2">ReadLE32</a>(blocks + i*4);</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  k1 *= c1;</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  k1 = <a class="code" href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0">ROTL32</a>(k1, 15);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  k1 *= c2;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  h1 ^= k1;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  h1 = <a class="code" href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0">ROTL32</a>(h1, 13);</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  h1 = h1 * 5 + 0xe6546b64;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">//----------</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// tail</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">const</span> uint8_t* tail = (<span class="keyword">const</span> uint8_t*)(&vDataToHash[0] + nblocks * 4);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  uint32_t k1 = 0;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">switch</span> (vDataToHash.size() & 3) {</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">case</span> 3:</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  k1 ^= tail[2] << 16;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">case</span> 2:</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  k1 ^= tail[1] << 8;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">case</span> 1:</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  k1 ^= tail[0];</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  k1 *= c1;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  k1 = <a class="code" href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0">ROTL32</a>(k1, 15);</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  k1 *= c2;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  h1 ^= k1;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  };</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">//----------</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// finalization</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  h1 ^= vDataToHash.size();</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  h1 ^= h1 >> 16;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  h1 *= 0x85ebca6b;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  h1 ^= h1 >> 13;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  h1 *= 0xc2b2ae35;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  h1 ^= h1 >> 16;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> h1;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="hash_8h.html#a391c1a6a1f947abbc53cc51fc709110e"> 75</a></span> <span class="keywordtype">void</span> <a class="code" href="hash_8cpp.html#a391c1a6a1f947abbc53cc51fc709110e">BIP32Hash</a>(<span class="keyword">const</span> <a class="code" href="classuint256.html">ChainCode</a> &chainCode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChild, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> header, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>[32], <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> output[64])</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> {</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> num[4];</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  num[0] = (nChild >> 24) & 0xFF;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  num[1] = (nChild >> 16) & 0xFF;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  num[2] = (nChild >> 8) & 0xFF;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  num[3] = (nChild >> 0) & 0xFF;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="classCHMAC__SHA512.html">CHMAC_SHA512</a>(chainCode.<a class="code" href="classbase__blob.html#aeee68e00ceeacf49086e98b661e017ff">begin</a>(), chainCode.<a class="code" href="classbase__blob.html#a00e7426a5d1ada51c635debf85f5a810">size</a>()).Write(&header, 1).<a class="code" href="classCHMAC__SHA512.html#aefdf2b068b668027b67c8822227a5a18">Write</a>(<a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>, 32).<a class="code" href="classCHMAC__SHA512.html#aefdf2b068b668027b67c8822227a5a18">Write</a>(num, 4).<a class="code" href="classCHMAC__SHA512.html#a3042ed5129bd381eb18ed2da201d6ed5">Finalize</a>(output);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> }</div><div class="ttc" id="pubkey_8h_html"><div class="ttname"><a href="pubkey_8h.html">pubkey.h</a></div></div>
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<div class="ttc" id="classCHMAC__SHA512_html_aefdf2b068b668027b67c8822227a5a18"><div class="ttname"><a href="classCHMAC__SHA512.html#aefdf2b068b668027b67c8822227a5a18">CHMAC_SHA512::Write</a></div><div class="ttdeci">CHMAC_SHA512 & Write(const unsigned char *data, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="hmac__sha512_8h_source.html#l00024">hmac_sha512.h:24</a></div></div>
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<div class="ttc" id="classCHMAC__SHA512_html"><div class="ttname"><a href="classCHMAC__SHA512.html">CHMAC_SHA512</a></div><div class="ttdef"><b>Definition:</b> <a href="hmac__sha512_8h_source.html#l00014">hmac_sha512.h:14</a></div></div>
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<div class="ttc" id="hash_8h_html"><div class="ttname"><a href="hash_8h.html">hash.h</a></div></div>
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<div class="ttc" id="classbase__blob_html_aeee68e00ceeacf49086e98b661e017ff"><div class="ttname"><a href="classbase__blob.html#aeee68e00ceeacf49086e98b661e017ff">base_blob::begin</a></div><div class="ttdeci">unsigned char * begin()</div><div class="ttdef"><b>Definition:</b> <a href="uint256_8h_source.html#l00055">uint256.h:55</a></div></div>
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<div class="ttc" id="namespacegen__base58__test__vectors_html_a8d12b07536a476098e3d74b6a79dfc9a"><div class="ttname"><a href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">gen_base58_test_vectors.data</a></div><div class="ttdeci">data</div><div class="ttdef"><b>Definition:</b> <a href="gen__base58__test__vectors_8py_source.html#l00123">gen_base58_test_vectors.py:123</a></div></div>
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<div class="ttc" id="hash_8cpp_html_a3cf0406d24590eaad9a3163c552e9730"><div class="ttname"><a href="hash_8cpp.html#a3cf0406d24590eaad9a3163c552e9730">MurmurHash3</a></div><div class="ttdeci">unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector< unsigned char > &vDataToHash)</div><div class="ttdef"><b>Definition:</b> <a href="hash_8cpp_source.html#l00016">hash.cpp:16</a></div></div>
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<div class="ttc" id="hmac__sha512_8h_html"><div class="ttname"><a href="hmac__sha512_8h.html">hmac_sha512.h</a></div></div>
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<div class="ttc" id="hash_8cpp_html_a391c1a6a1f947abbc53cc51fc709110e"><div class="ttname"><a href="hash_8cpp.html#a391c1a6a1f947abbc53cc51fc709110e">BIP32Hash</a></div><div class="ttdeci">void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64])</div><div class="ttdef"><b>Definition:</b> <a href="hash_8cpp_source.html#l00075">hash.cpp:75</a></div></div>
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<div class="ttc" id="classbase__blob_html_a00e7426a5d1ada51c635debf85f5a810"><div class="ttname"><a href="classbase__blob.html#a00e7426a5d1ada51c635debf85f5a810">base_blob::size</a></div><div class="ttdeci">unsigned int size() const</div><div class="ttdef"><b>Definition:</b> <a href="uint256_8h_source.html#l00075">uint256.h:75</a></div></div>
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<div class="ttc" id="common_8h_html_a95b035f2729461d80d2f09d776ea07d2"><div class="ttname"><a href="common_8h.html#a95b035f2729461d80d2f09d776ea07d2">ReadLE32</a></div><div class="ttdeci">static uint32_t ReadLE32(const unsigned char *ptr)</div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00021">common.h:21</a></div></div>
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<div class="ttc" id="classCHMAC__SHA512_html_a3042ed5129bd381eb18ed2da201d6ed5"><div class="ttname"><a href="classCHMAC__SHA512.html#a3042ed5129bd381eb18ed2da201d6ed5">CHMAC_SHA512::Finalize</a></div><div class="ttdeci">void Finalize(unsigned char hash[OUTPUT_SIZE])</div><div class="ttdef"><b>Definition:</b> <a href="hmac__sha512_8cpp_source.html#l00029">hmac_sha512.cpp:29</a></div></div>
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<div class="ttc" id="classuint256_html"><div class="ttname"><a href="classuint256.html">uint256</a></div><div class="ttdef"><b>Definition:</b> <a href="uint256_8h_source.html#l00114">uint256.h:114</a></div></div>
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<div class="ttc" id="common_8h_html"><div class="ttname"><a href="common_8h.html">common.h</a></div></div>
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<div class="ttc" id="hash_8cpp_html_aa8045f521ac28bee04e4980f93272dc0"><div class="ttname"><a href="hash_8cpp.html#aa8045f521ac28bee04e4980f93272dc0">ROTL32</a></div><div class="ttdeci">uint32_t ROTL32(uint32_t x, int8_t r)</div><div class="ttdef"><b>Definition:</b> <a href="hash_8cpp_source.html#l00011">hash.cpp:11</a></div></div>
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</div><!-- fragment --></div><!-- contents -->
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