mirror of https://github.com/zcash/zips.git
Regenerate HTML using current rst2html (with docutils 0.19).
Signed-off-by: Daira Emma Hopwood <daira@jacaranda.org>
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Daira Emma Hopwood
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@ -129,93 +129,93 @@ License: MIT</pre>
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<section id="notes"><h3><span class="section-heading">Notes</span><span class="section-anchor"> <a rel="bookmark" href="#notes"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h3>
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<p>The <code>hashPrevouts</code>, <code>hashSequence</code>, <code>hashOutputs</code>, and <code>hashJoinSplits</code> calculated in an earlier validation can be reused in other inputs of the same transaction, so that the time complexity of the whole hashing process reduces from O(n<sup>2</sup>) to O(n).</p>
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<p>Refer to the reference implementation, reproduced below, for the precise algorithm:</p>
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<pre data-language="cpp"><span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'P'</span><span class="p">,</span><span class="sc">'r'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'v'</span><span class="p">,</span><span class="sc">'o'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'q'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'J'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'l'</span><span class="p">,</span><span class="sc">'i'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
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<pre data-language="cpp"><span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'P'</span><span class="p">,</span><span class="sc">'r'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'v'</span><span class="p">,</span><span class="sc">'o'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'q'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
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<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
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<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'J'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'l'</span><span class="p">,</span><span class="sc">'i'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
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<span class="c1">// The default values are zeroes</span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span><span class="w"></span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span><span class="w"></span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span><span class="w"></span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span><span class="w"></span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span>
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<span class="n">uint256</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span>
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<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">))</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
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<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
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<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
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<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span><span class="w"></span>
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<span class="w"> </span><span class="p">}</span><span class="w"></span>
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<span class="w"> </span><span class="n">hashPrevouts</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
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<span class="p">}</span><span class="w"></span>
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<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">))</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
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<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="w"> </span><span class="n">hashPrevouts</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
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<span class="p">}</span>
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<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">)</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
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<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
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<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
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<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span><span class="w"></span>
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<span class="w"> </span><span class="p">}</span><span class="w"></span>
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<span class="w"> </span><span class="n">hashSequence</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
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<span class="p">}</span><span class="w"></span>
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||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">)</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
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||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashSequence</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">n</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="n">nIn</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">nIn</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">n</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="n">nIn</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">nIn</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">[</span><span class="n">n</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">joinSplitPubKey</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashJoinSplits</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">[</span><span class="n">n</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">joinSplitPubKey</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">hashJoinSplits</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="kt">uint32_t</span><span class="w"> </span><span class="n">leConsensusBranchId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">htole32</span><span class="p">(</span><span class="n">consensusBranchId</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">personalization</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{};</span><span class="w"></span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="p">,</span><span class="w"> </span><span class="s">"ZcashSigHash"</span><span class="p">,</span><span class="w"> </span><span class="mi">12</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="o">+</span><span class="mi">12</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">leConsensusBranchId</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="kt">uint32_t</span><span class="w"> </span><span class="n">leConsensusBranchId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">htole32</span><span class="p">(</span><span class="n">consensusBranchId</span><span class="p">);</span>
|
||||
<span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">personalization</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{};</span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="p">,</span><span class="w"> </span><span class="s">"ZcashSigHash"</span><span class="p">,</span><span class="w"> </span><span class="mi">12</span><span class="p">);</span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="o">+</span><span class="mi">12</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">leConsensusBranchId</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span>
|
||||
|
||||
<span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">personalization</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">personalization</span><span class="p">);</span>
|
||||
<span class="c1">// fOverwintered and nVersion</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">GetHeader</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">GetHeader</span><span class="p">();</span>
|
||||
<span class="c1">// Version group ID</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nVersionGroupId</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nVersionGroupId</span><span class="p">;</span>
|
||||
<span class="c1">// Input prevouts/nSequence (none/all, depending on flags)</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span>
|
||||
<span class="c1">// Outputs (none/one/all, depending on flags)</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span>
|
||||
<span class="c1">// JoinSplits</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span>
|
||||
<span class="c1">// Locktime</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nLockTime</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nLockTime</span><span class="p">;</span>
|
||||
<span class="c1">// Expiry height</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nExpiryHeight</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nExpiryHeight</span><span class="p">;</span>
|
||||
<span class="c1">// Sighash type</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">nHashType</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">nHashType</span><span class="p">;</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">nIn</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">NOT_AN_INPUT</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">nIn</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">NOT_AN_INPUT</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// The input being signed (replacing the scriptSig with scriptCode + amount)</span>
|
||||
<span class="w"> </span><span class="c1">// The prevout may already be contained in hashPrevout, and the nSequence</span>
|
||||
<span class="w"> </span><span class="c1">// may already be contained in hashSequence.</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="k">const</span><span class="w"> </span><span class="n">CScriptBase</span><span class="o">&></span><span class="p">(</span><span class="n">scriptCode</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">amount</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="k">const</span><span class="w"> </span><span class="n">CScriptBase</span><span class="o">&></span><span class="p">(</span><span class="n">scriptCode</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">amount</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">return</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span></pre>
|
||||
<span class="k">return</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span></pre>
|
||||
</section>
|
||||
</section>
|
||||
<section id="example"><h2><span class="section-heading">Example</span><span class="section-anchor"> <a rel="bookmark" href="#example"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
|
||||
|
|
|
|||
|
|
@ -70,19 +70,19 @@ License: MIT</pre>
|
|||
<section id="activation-mechanism"><h3><span class="section-heading">Activation mechanism</span><span class="section-anchor"> <a rel="bookmark" href="#activation-mechanism"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h3>
|
||||
<p>The Zcash block chain is broken into "epochs" of block height intervals <code>[ACTIVATION_HEIGHT_N, ACTIVATION_HEIGHT_{N+1})</code> (i.e. including <code>ACTIVATION_HEIGHT_N</code> and excluding <code>ACTIVATION_HEIGHT_{N+1}</code>), on which consensus rule sets are defined.</p>
|
||||
<p>When a consensus rule depends on activation of a particular upgrade, its implementation (and that of any network behavior or surrounding code that depends on it) MUST be gated by a block height check. For example:</p>
|
||||
<pre data-language="cpp"><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">CurrentEpoch</span><span class="p">(</span><span class="n">chainActive</span><span class="p">.</span><span class="n">Height</span><span class="p">(),</span><span class="w"> </span><span class="n">Params</span><span class="p">().</span><span class="n">GetConsensus</span><span class="p">())</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">Consensus</span><span class="o">::</span><span class="n">UPGRADE_OVERWINTER</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<pre data-language="cpp"><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">CurrentEpoch</span><span class="p">(</span><span class="n">chainActive</span><span class="p">.</span><span class="n">Height</span><span class="p">(),</span><span class="w"> </span><span class="n">Params</span><span class="p">().</span><span class="n">GetConsensus</span><span class="p">())</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">Consensus</span><span class="o">::</span><span class="n">UPGRADE_OVERWINTER</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// Overwinter-specific logic</span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// Non-Overwinter logic</span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="c1">// ...</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">NetworkUpgradeActive</span><span class="p">(</span><span class="n">pindex</span><span class="o">-></span><span class="n">nHeight</span><span class="p">,</span><span class="w"> </span><span class="n">Params</span><span class="p">().</span><span class="n">GetConsensus</span><span class="p">(),</span><span class="w"> </span><span class="n">Consensus</span><span class="o">::</span><span class="n">UPGRADE_OVERWINTER</span><span class="p">))</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">NetworkUpgradeActive</span><span class="p">(</span><span class="n">pindex</span><span class="o">-></span><span class="n">nHeight</span><span class="p">,</span><span class="w"> </span><span class="n">Params</span><span class="p">().</span><span class="n">GetConsensus</span><span class="p">(),</span><span class="w"> </span><span class="n">Consensus</span><span class="o">::</span><span class="n">UPGRADE_OVERWINTER</span><span class="p">))</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// Overwinter consensus rules applied to block</span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// Pre-Overwinter consensus rules applied to block</span>
|
||||
<span class="p">}</span><span class="w"></span></pre>
|
||||
<span class="p">}</span></pre>
|
||||
<section id="block-validation"><h4><span class="section-heading">Block validation</span><span class="section-anchor"> <a rel="bookmark" href="#block-validation"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h4>
|
||||
<p>Incoming blocks known to have a particular height (due to their parent chain being entirely known) MUST be validated under the consensus rules corresponding to the expected consensus branch ID for that height.</p>
|
||||
<p>Incoming blocks with unknown heights (because at least one block header in their parent chain is unknown) MAY be cached, so that they can be reconsidered in the future after all their parents have been received.</p>
|
||||
|
|
|
|||
|
|
@ -29,9 +29,9 @@ Discussions-To: <<a href="https://github.com/zcash/zips/issues/400">https://g
|
|||
<span class="math">\(u\!\)</span>
|
||||
-coordinate is zero, there are two encodings that will be accepted:</p>
|
||||
<pre data-language="rust"><span class="c1">// Fix the sign of `u` if necessary</span>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">flip_sign</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Choice</span>::<span class="n">from</span><span class="p">((</span><span class="n">u</span><span class="p">.</span><span class="n">to_bytes</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">^</span><span class="w"> </span><span class="n">sign</span><span class="p">)</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">u_negated</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">-</span><span class="n">u</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">final_u</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Fq</span>::<span class="n">conditional_select</span><span class="p">(</span><span class="o">&</span><span class="n">u</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">u_negated</span><span class="p">,</span><span class="w"> </span><span class="n">flip_sign</span><span class="p">);</span><span class="w"></span></pre>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">flip_sign</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Choice</span>::<span class="n">from</span><span class="p">((</span><span class="n">u</span><span class="p">.</span><span class="n">to_bytes</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">^</span><span class="w"> </span><span class="n">sign</span><span class="p">)</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">u_negated</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">-</span><span class="n">u</span><span class="p">;</span>
|
||||
<span class="kd">let</span><span class="w"> </span><span class="n">final_u</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Fq</span>::<span class="n">conditional_select</span><span class="p">(</span><span class="o">&</span><span class="n">u</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">u_negated</span><span class="p">,</span><span class="w"> </span><span class="n">flip_sign</span><span class="p">);</span></pre>
|
||||
<p>This code accepts either sign bit, because <code>u_negated == u</code>.</p>
|
||||
<p>There are two points on the Jubjub curve with
|
||||
<span class="math">\(u\!\)</span>
|
||||
|
|
|
|||
|
|
@ -391,7 +391,7 @@ License: MIT</pre>
|
|||
|
||||
<span class="nd">@classmethod</span>
|
||||
<span class="k">def</span> <span class="nf">from_block</span><span class="p">(</span><span class="n">Z</span><span class="p">,</span> <span class="n">block</span><span class="p">:</span> <span class="n">ZcashBlock</span><span class="p">)</span> <span class="o">-></span> <span class="n">ZcashMMRNode</span><span class="p">:</span>
|
||||
<span class="sd">'''Create a leaf node from a block'''</span>
|
||||
<span class="w"> </span><span class="sd">'''Create a leaf node from a block'''</span>
|
||||
<span class="k">return</span> <span class="n">Z</span><span class="p">(</span>
|
||||
<span class="n">left_child</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
|
||||
<span class="n">right_child</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
|
||||
|
|
@ -412,7 +412,7 @@ License: MIT</pre>
|
|||
<span class="n">consensusBranchId</span><span class="o">=</span><span class="n">block</span><span class="o">.</span><span class="n">consensusBranchId</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">serialize</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bytes</span><span class="p">:</span>
|
||||
<span class="sd">'''serializes a node'''</span>
|
||||
<span class="w"> </span><span class="sd">'''serializes a node'''</span>
|
||||
<span class="n">buf</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hashSubtreeCommitment</span>
|
||||
<span class="o">+</span> <span class="n">serialize_uint32</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">nEarliestTimestamp</span><span class="p">)</span>
|
||||
<span class="o">+</span> <span class="n">serialize_uint32</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">nLatestTimestamp</span><span class="p">)</span>
|
||||
|
|
@ -457,7 +457,7 @@ License: MIT</pre>
|
|||
<span class="n">consensusBranchId</span><span class="o">=</span><span class="n">left_child</span><span class="o">.</span><span class="n">consensusBranchId</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">make_root_commitment</span><span class="p">(</span><span class="n">root</span><span class="p">:</span> <span class="n">ZcashMMRNode</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bytes</span><span class="p">:</span>
|
||||
<span class="sd">'''Makes the root commitment for a blockheader'''</span>
|
||||
<span class="w"> </span><span class="sd">'''Makes the root commitment for a blockheader'''</span>
|
||||
<span class="k">return</span> <span class="n">H</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">serialize</span><span class="p">(),</span> <span class="n">root</span><span class="o">.</span><span class="n">consensusBranchId</span><span class="p">)</span></pre>
|
||||
</section>
|
||||
<section id="incremental-push-and-pop-pseudocode"><h3><span class="section-heading">Incremental push and pop (pseudocode)</span><span class="section-anchor"> <a rel="bookmark" href="#incremental-push-and-pop-pseudocode"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h3>
|
||||
|
|
@ -488,7 +488,7 @@ License: MIT</pre>
|
|||
|
||||
|
||||
<span class="k">def</span> <span class="nf">bag_peaks</span><span class="p">(</span><span class="n">peaks</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">ZcashMMRNode</span><span class="p">])</span> <span class="o">-></span> <span class="n">ZcashMMRNode</span><span class="p">:</span>
|
||||
<span class="sd">'''</span>
|
||||
<span class="w"> </span><span class="sd">'''</span>
|
||||
<span class="sd"> "Bag" a list of peaks, and return the final root</span>
|
||||
<span class="sd"> '''</span>
|
||||
<span class="n">root</span> <span class="o">=</span> <span class="n">peaks</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||||
|
|
@ -498,7 +498,7 @@ License: MIT</pre>
|
|||
|
||||
|
||||
<span class="k">def</span> <span class="nf">append</span><span class="p">(</span><span class="n">root</span><span class="p">:</span> <span class="n">ZcashMMRNode</span><span class="p">,</span> <span class="n">leaf</span><span class="p">:</span> <span class="n">ZcashMMRNode</span><span class="p">)</span> <span class="o">-></span> <span class="n">ZcashMMRNode</span><span class="p">:</span>
|
||||
<span class="sd">'''Append a leaf to an existing tree, return the new tree root'''</span>
|
||||
<span class="w"> </span><span class="sd">'''Append a leaf to an existing tree, return the new tree root'''</span>
|
||||
<span class="c1"># recursively find a list of peaks in the current tree</span>
|
||||
<span class="n">peaks</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">ZcashMMRNode</span><span class="p">]</span> <span class="o">=</span> <span class="n">get_peaks</span><span class="p">(</span><span class="n">root</span><span class="p">)</span>
|
||||
<span class="n">merged</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">ZcashMMRNode</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||||
|
|
@ -525,7 +525,7 @@ License: MIT</pre>
|
|||
<span class="math">\(k\)</span>
|
||||
is the number of leaves in the right subtree of the MMR root.</p>
|
||||
<pre data-language="python"><span class="k">def</span> <span class="nf">delete</span><span class="p">(</span><span class="n">root</span><span class="p">:</span> <span class="n">ZcashMMRNode</span><span class="p">)</span> <span class="o">-></span> <span class="n">ZcashMMRNode</span><span class="p">:</span>
|
||||
<span class="sd">'''</span>
|
||||
<span class="w"> </span><span class="sd">'''</span>
|
||||
<span class="sd"> Delete the rightmost leaf node from an existing MMR</span>
|
||||
<span class="sd"> Return the new tree root</span>
|
||||
<span class="sd"> '''</span>
|
||||
|
|
|
|||
186
zip-0243.html
186
zip-0243.html
|
|
@ -97,125 +97,125 @@ License: MIT</pre>
|
|||
<section id="notes"><h3><span class="section-heading">Notes</span><span class="section-anchor"> <a rel="bookmark" href="#notes"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h3>
|
||||
<p>The <code>hashPrevouts</code>, <code>hashSequence</code>, <code>hashOutputs</code>, <code>hashJoinSplits</code>, <code>hashShieldedSpends</code>, and <code>hashShieldedOutputs</code> calculated in an earlier validation can be reused in other inputs of the same transaction, so that the time complexity of the whole hashing process reduces from O(n<sup>2</sup>) to O(n).</p>
|
||||
<p>Refer to the reference implementation, reproduced below, for the precise algorithm:</p>
|
||||
<pre data-language="cpp"><span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'P'</span><span class="p">,</span><span class="sc">'r'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'v'</span><span class="p">,</span><span class="sc">'o'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'q'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'J'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'l'</span><span class="p">,</span><span class="sc">'i'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_SPENDS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'d'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span><span class="w"></span>
|
||||
<pre data-language="cpp"><span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'P'</span><span class="p">,</span><span class="sc">'r'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'v'</span><span class="p">,</span><span class="sc">'o'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'q'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'J'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'l'</span><span class="p">,</span><span class="sc">'i'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_SPENDS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'e'</span><span class="p">,</span><span class="sc">'n'</span><span class="p">,</span><span class="sc">'d'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
<span class="k">const</span><span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span>
|
||||
<span class="w"> </span><span class="p">{</span><span class="sc">'Z'</span><span class="p">,</span><span class="sc">'c'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">,</span><span class="sc">'S'</span><span class="p">,</span><span class="sc">'O'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'p'</span><span class="p">,</span><span class="sc">'u'</span><span class="p">,</span><span class="sc">'t'</span><span class="p">,</span><span class="sc">'H'</span><span class="p">,</span><span class="sc">'a'</span><span class="p">,</span><span class="sc">'s'</span><span class="p">,</span><span class="sc">'h'</span><span class="p">};</span>
|
||||
|
||||
<span class="c1">// The default values are zeroes</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashShieldedSpends</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashShieldedSpends</span><span class="p">;</span>
|
||||
<span class="n">uint256</span><span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="p">;</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">))</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashPrevouts</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">))</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_PREVOUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashPrevouts</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">)</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashSequence</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">SIGHASH_ANYONECANPAY</span><span class="p">)</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SEQUENCE_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashSequence</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">n</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="n">nIn</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">nIn</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="p">(</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">SIGHASH_NONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">n</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">((</span><span class="n">nHashType</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="mh">0x1f</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">SIGHASH_SINGLE</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="n">nIn</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">.</span><span class="n">size</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vout</span><span class="p">[</span><span class="n">nIn</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="n">hashOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">[</span><span class="n">n</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">joinSplitPubKey</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashJoinSplits</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_JOINSPLITS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vjoinsplit</span><span class="p">[</span><span class="n">n</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">joinSplitPubKey</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">hashJoinSplits</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_SPENDS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">cv</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">anchor</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nullifier</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">rk</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">zkproof</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashShieldedSpends</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_SPENDS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">cv</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">anchor</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">nullifier</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">rk</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedSpend</span><span class="p">[</span><span class="n">n</span><span class="p">].</span><span class="n">zkproof</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashShieldedSpends</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">[</span><span class="n">n</span><span class="p">];</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">ZCASH_SHIELDED_OUTPUTS_HASH_PERSONALIZATION</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">n</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vShieldedOutput</span><span class="p">[</span><span class="n">n</span><span class="p">];</span>
|
||||
<span class="w"> </span><span class="p">}</span>
|
||||
<span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="kt">uint32_t</span><span class="w"> </span><span class="n">leConsensusBranchId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">htole32</span><span class="p">(</span><span class="n">consensusBranchId</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">personalization</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{};</span><span class="w"></span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="p">,</span><span class="w"> </span><span class="s">"ZcashSigHash"</span><span class="p">,</span><span class="w"> </span><span class="mi">12</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="o">+</span><span class="mi">12</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">leConsensusBranchId</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="kt">uint32_t</span><span class="w"> </span><span class="n">leConsensusBranchId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">htole32</span><span class="p">(</span><span class="n">consensusBranchId</span><span class="p">);</span>
|
||||
<span class="kt">unsigned</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">personalization</span><span class="p">[</span><span class="mi">16</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{};</span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="p">,</span><span class="w"> </span><span class="s">"ZcashSigHash"</span><span class="p">,</span><span class="w"> </span><span class="mi">12</span><span class="p">);</span>
|
||||
<span class="n">memcpy</span><span class="p">(</span><span class="n">personalization</span><span class="o">+</span><span class="mi">12</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">leConsensusBranchId</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span>
|
||||
|
||||
<span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">personalization</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="n">CBLAKE2bWriter</span><span class="w"> </span><span class="nf">ss</span><span class="p">(</span><span class="n">SER_GETHASH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">personalization</span><span class="p">);</span>
|
||||
<span class="c1">// fOverwintered and nVersion</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">GetHeader</span><span class="p">();</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">GetHeader</span><span class="p">();</span>
|
||||
<span class="c1">// Version group ID</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nVersionGroupId</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nVersionGroupId</span><span class="p">;</span>
|
||||
<span class="c1">// Input prevouts/nSequence (none/all, depending on flags)</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashPrevouts</span><span class="p">;</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashSequence</span><span class="p">;</span>
|
||||
<span class="c1">// Outputs (none/one/all, depending on flags)</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashOutputs</span><span class="p">;</span>
|
||||
<span class="c1">// JoinSplit descriptions</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashJoinSplits</span><span class="p">;</span>
|
||||
<span class="c1">// Spend descriptions</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashShieldedSpends</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashShieldedSpends</span><span class="p">;</span>
|
||||
<span class="c1">// Output descriptions</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">hashShieldedOutputs</span><span class="p">;</span>
|
||||
<span class="c1">// Locktime</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nLockTime</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nLockTime</span><span class="p">;</span>
|
||||
<span class="c1">// Expiry height</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nExpiryHeight</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">nExpiryHeight</span><span class="p">;</span>
|
||||
<span class="c1">// Sapling value balance</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">valueBalance</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">valueBalance</span><span class="p">;</span>
|
||||
<span class="c1">// Sighash type</span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">nHashType</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">nHashType</span><span class="p">;</span>
|
||||
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">nIn</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">NOT_AN_INPUT</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
||||
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">nIn</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">NOT_AN_INPUT</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<span class="w"> </span><span class="c1">// The input being signed (replacing the scriptSig with scriptCode + amount)</span>
|
||||
<span class="w"> </span><span class="c1">// The prevout may already be contained in hashPrevout, and the nSequence</span>
|
||||
<span class="w"> </span><span class="c1">// may already be contained in hashSequence.</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="k">const</span><span class="w"> </span><span class="n">CScriptBase</span><span class="o">&></span><span class="p">(</span><span class="n">scriptCode</span><span class="p">);</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">amount</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span><span class="w"></span>
|
||||
<span class="p">}</span><span class="w"></span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">prevout</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="k">const</span><span class="w"> </span><span class="n">CScriptBase</span><span class="o">&></span><span class="p">(</span><span class="n">scriptCode</span><span class="p">);</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">amount</span><span class="p">;</span>
|
||||
<span class="w"> </span><span class="n">ss</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">txTo</span><span class="p">.</span><span class="n">vin</span><span class="p">[</span><span class="n">nIn</span><span class="p">].</span><span class="n">nSequence</span><span class="p">;</span>
|
||||
<span class="p">}</span>
|
||||
|
||||
<span class="k">return</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span><span class="w"></span></pre>
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||||
<span class="k">return</span><span class="w"> </span><span class="n">ss</span><span class="p">.</span><span class="n">GetHash</span><span class="p">();</span></pre>
|
||||
</section>
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</section>
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||||
<section id="example"><h2><span class="section-heading">Example</span><span class="section-anchor"> <a rel="bookmark" href="#example"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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|
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Reference in New Issue