integrate simple rct api
This commit is contained in:
moneromooo-monero
parent
1e8d37e7d8
commit
a4d4d6194b
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@ -2462,6 +2462,103 @@ bool Blockchain::check_tx_inputs(const transaction& tx, tx_verification_context
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else
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{
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// from version 2, check ringct signatures
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// obviously, the original and simple rct APIs use a mixRing that's indexes
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// in opposite orders, because it'd be too simple otherwise...
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if (tx.rct_signatures.simple)
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{
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rct::ctkeyM reconstructed_mixRing;
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std::vector<rct::keyV> reconstructed_II;
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// if the tx already has a non empty mixRing, use them,
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// else reconstruct them
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const rct::ctkeyM &mixRing = tx.rct_signatures.mixRing.empty() ? reconstructed_mixRing : tx.rct_signatures.mixRing;
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// always do II, because it's split in the simple version
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// all MGs should have the same II size (1)
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for (size_t n = 0; n < tx.rct_signatures.MGs.size(); ++n)
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{
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if (tx.rct_signatures.MGs[n].II.size() != 1)
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched MGs II sizes");
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return false;
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}
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}
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reconstructed_II.resize(tx.vin.size());
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for (size_t n = 0; n < tx.vin.size(); ++n)
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{
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reconstructed_II[n].push_back(rct::ki2rct(boost::get<txin_to_key>(tx.vin[n]).k_image));
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reconstructed_II[n].push_back(tx.rct_signatures.MGs[n].II[0]);
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}
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if (tx.rct_signatures.mixRing.empty())
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{
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reconstructed_mixRing.resize(pubkeys.size());
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for (size_t n = 0; n < pubkeys.size(); ++n)
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{
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for (size_t m = 0; m < pubkeys[n].size(); ++m)
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{
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reconstructed_mixRing[n].push_back(pubkeys[n][m]);
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}
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}
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}
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// check all this, either recontructed (so should really pass), or not
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{
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if (pubkeys.size() != mixRing.size())
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
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return false;
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}
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for (size_t i = 0; i < pubkeys.size(); ++i)
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{
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if (pubkeys[i].size() != mixRing[i].size())
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
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return false;
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}
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}
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for (size_t n = 0; n < pubkeys.size(); ++n)
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{
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for (size_t m = 0; m < pubkeys[n].size(); ++m)
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{
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if (pubkeys[n][m].dest != rct::rct2pk(mixRing[n][m].dest))
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched pubkey at vin " << n << ", index " << m);
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return false;
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}
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if (pubkeys[n][m].mask != rct::rct2pk(mixRing[n][m].mask))
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched commitment at vin " << n << ", index " << m);
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return false;
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}
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}
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}
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}
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if (tx.rct_signatures.MGs.size() != tx.vin.size())
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched MGs/vin sizes");
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return false;
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}
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for (size_t n = 0; n < tx.vin.size(); ++n)
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{
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if (memcmp(&boost::get<txin_to_key>(tx.vin[n]).k_image, &reconstructed_II[n][0], 32))
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{
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LOG_PRINT_L1("Failed to check ringct signatures: mismatched key image");
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return false;
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}
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}
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if (!rct::verRctSimple(tx.rct_signatures, mixRing, &reconstructed_II, rct::hash2rct(tx_prefix_hash)))
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{
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LOG_PRINT_L1("Failed to check ringct signatures!");
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return false;
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}
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}
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else
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{
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rct::ctkeyM reconstructed_mixRing;
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rct::keyV reconstructed_II;
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@ -2553,6 +2650,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, tx_verification_context
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return false;
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}
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}
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}
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return true;
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}
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@ -231,12 +231,20 @@ namespace cryptonote
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else
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{
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FIELD(rct_signatures)
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if (rct_signatures.simple)
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{
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if (rct_signatures.mixRing.size() && rct_signatures.mixRing.size() != vin.size())
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return false;
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}
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else
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{
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for (size_t i = 0; i < rct_signatures.mixRing.size(); ++i)
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{
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if (rct_signatures.mixRing[i].size() != vin.size())
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return false;
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}
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}
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}
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END_SERIALIZE()
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private:
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@ -224,22 +224,15 @@ namespace boost
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template <class Archive>
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inline void serialize(Archive &a, rct::rctSig &x, const boost::serialization::version_type ver)
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{
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a & x.rangeSigs;
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a & x.MG;
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// a & x.mixRing; mixRing is not serialized, as it can be reconstructed from the offsets
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a & x.ecdhInfo;
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a & x.outPk;
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a & x.txnFee;
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// a & x.bash_hash; bash_hash is not serialized, as it can be reconstructed from the tx data
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}
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template <class Archive>
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inline void serialize(Archive &a, rct::sRctSig &x, const boost::serialization::version_type ver)
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{
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a & x.simple;
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// a & x.message; message is not serialized, as it can be reconstructed from the tx data
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a & x.rangeSigs;
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if (x.simple)
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a & x.MGs;
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else
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a & x.MG;
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// a & x.mixRing; mixRing is not serialized, as it can be reconstructed from the offsets
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if (x.simple)
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a & x.pseudoOuts;
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a & x.ecdhInfo;
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a & x.outPk;
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@ -516,19 +516,6 @@ namespace cryptonote
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};
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std::vector<input_generation_context_data> in_contexts;
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if (tx.version > 1)
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{
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// ringct requires all real inputs to be at the same index for all inputs // TODO
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BOOST_FOREACH(const tx_source_entry& src_entr, sources)
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{
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if(src_entr.real_output != sources.begin()->real_output)
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{
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LOG_ERROR("All inputs must have the same index for ringct");
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return false;
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}
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}
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}
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uint64_t summary_inputs_money = 0;
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//fill inputs
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BOOST_FOREACH(const tx_source_entry& src_entr, sources)
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@ -641,24 +628,46 @@ namespace cryptonote
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}
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else
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{
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bool all_rct_inputs = true;
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size_t n_total_outs = sources[0].outputs.size(); // only for non-simple rct
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BOOST_FOREACH(const tx_source_entry& src_entr, sources)
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all_rct_inputs &= !(src_entr.mask == rct::identity());
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bool use_simple_rct = all_rct_inputs;
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if (!use_simple_rct)
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{
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// non simple ringct requires all real inputs to be at the same index for all inputs
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BOOST_FOREACH(const tx_source_entry& src_entr, sources)
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{
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if(src_entr.real_output != sources.begin()->real_output)
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{
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LOG_ERROR("All inputs must have the same index for non-simple ringct");
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return false;
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}
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}
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// enforce same mixin for all outputs
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size_t n_total_outs = sources[0].outputs.size();
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for (size_t i = 1; i < sources.size(); ++i) {
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if (n_total_outs != sources[i].outputs.size()) {
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LOG_ERROR("Ringct transaction has varying mixin");
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LOG_ERROR("Non-simple ringct transaction has varying mixin");
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return false;
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}
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}
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}
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uint64_t amount_in = 0, amount_out = 0;
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rct::ctkeyV inSk;
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rct::ctkeyM mixRing(n_total_outs);
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// mixRing indexing is done the other way round for simple
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rct::ctkeyM mixRing(use_simple_rct ? sources.size() : n_total_outs);
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rct::keyV destinations;
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std::vector<uint64_t> amounts;
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std::vector<uint64_t> inamounts, outamounts;
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std::vector<unsigned int> index;
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for (size_t i = 0; i < sources.size(); ++i)
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{
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rct::ctkey ctkey;
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amount_in += sources[i].amount;
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inamounts.push_back(sources[i].amount);
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index.push_back(sources[i].real_output);
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// inSk: (secret key, mask)
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ctkey.dest = rct::sk2rct(in_contexts[i].in_ephemeral.sec);
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ctkey.mask = sources[i].mask;
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@ -669,9 +678,24 @@ namespace cryptonote
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for (size_t i = 0; i < tx.vout.size(); ++i)
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{
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destinations.push_back(rct::pk2rct(boost::get<txout_to_key>(tx.vout[i].target).key));
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amounts.push_back(tx.vout[i].amount);
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outamounts.push_back(tx.vout[i].amount);
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amount_out += tx.vout[i].amount;
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}
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if (use_simple_rct)
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{
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// mixRing indexing is done the other way round for simple
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for (size_t i = 0; i < sources.size(); ++i)
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{
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mixRing[i].resize(sources[i].outputs.size());
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for (size_t n = 0; n < sources[i].outputs.size(); ++n)
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{
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mixRing[i][n] = sources[i].outputs[n].second;
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}
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}
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}
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else
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{
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for (size_t i = 0; i < n_total_outs; ++i) // same index assumption
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{
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mixRing[i].resize(sources.size());
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@ -680,10 +704,11 @@ namespace cryptonote
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mixRing[i][n] = sources[n].outputs[i].second;
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}
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}
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}
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// fee
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if (amount_in > amount_out)
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amounts.push_back(amount_in - amount_out);
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if (!use_simple_rct && amount_in > amount_out)
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outamounts.push_back(amount_in - amount_out);
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// zero out all amounts to mask rct outputs, real amounts are now encrypted
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for (size_t i = 0; i < tx.vin.size(); ++i)
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@ -696,7 +721,10 @@ namespace cryptonote
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crypto::hash tx_prefix_hash;
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get_transaction_prefix_hash(tx, tx_prefix_hash);
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tx.rct_signatures = rct::genRct(inSk, destinations, amounts, mixRing, rct::hash2rct(tx_prefix_hash), sources[0].real_output); // same index assumption
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if (use_simple_rct)
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tx.rct_signatures = rct::genRctSimple(rct::hash2rct(tx_prefix_hash), inSk, destinations, inamounts, outamounts, amount_in - amount_out, mixRing, index);
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else
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tx.rct_signatures = rct::genRct(rct::hash2rct(tx_prefix_hash), inSk, destinations, outamounts, mixRing, sources[0].real_output); // same index assumption
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LOG_PRINT2("construct_tx.log", "transaction_created: " << get_transaction_hash(tx) << ENDL << obj_to_json_str(tx) << ENDL, LOG_LEVEL_3);
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}
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@ -329,7 +329,7 @@ namespace rct {
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// this shows that sum inputs = sum outputs
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//Ver:
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// verifies the above sig is created corretly
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mgSig proveRctMG(const ctkeyM & pubs, const ctkeyV & inSk, const ctkeyV &outSk, const ctkeyV & outPk, unsigned int index, key txnFeeKey, const key &base_hash) {
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mgSig proveRctMG(const key &message, const ctkeyM & pubs, const ctkeyV & inSk, const ctkeyV &outSk, const ctkeyV & outPk, unsigned int index, key txnFeeKey) {
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mgSig mg;
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//setup vars
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size_t cols = pubs.size();
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@ -374,9 +374,9 @@ namespace rct {
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sc_sub(sk[rows].bytes, sk[rows].bytes, outSk[j].mask.bytes); //subtract output masks in last row..
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}
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ctkeyV signed_data = outPk;
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signed_data.push_back(ctkey({base_hash, identity()}));
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key message = cn_fast_hash(signed_data);
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return MLSAG_Gen(message, M, sk, index);
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signed_data.push_back(ctkey({message, identity()}));
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key msg = cn_fast_hash(signed_data);
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return MLSAG_Gen(msg, M, sk, index);
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}
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@ -415,7 +415,7 @@ namespace rct {
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// this shows that sum inputs = sum outputs
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//Ver:
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// verifies the above sig is created corretly
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bool verRctMG(mgSig mg, const keyV &II, const ctkeyM & pubs, const ctkeyV & outPk, key txnFeeKey, const key &base_hash) {
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bool verRctMG(mgSig mg, const keyV &II, const ctkeyM & pubs, const ctkeyV & outPk, key txnFeeKey, const key &message) {
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//setup vars
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size_t cols = pubs.size();
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CHECK_AND_ASSERT_MES(cols >= 1, false, "Empty pubs");
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@ -447,11 +447,11 @@ namespace rct {
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subKeys(M[i][rows], M[i][rows], txnFeeKey);
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}
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ctkeyV signed_data = outPk;
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signed_data.push_back(ctkey({base_hash, identity()}));
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key message = cn_fast_hash(signed_data);
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signed_data.push_back(ctkey({message, identity()}));
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key msg = cn_fast_hash(signed_data);
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DP("message:");
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DP(message);
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return MLSAG_Ver(message, M, mg, II);
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DP(msg);
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return MLSAG_Ver(msg, M, mg, II);
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}
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//Ring-ct Simple MG sigs
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@ -535,7 +535,7 @@ namespace rct {
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// must know the destination private key to find the correct amount, else will return a random number
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// Note: For txn fees, the last index in the amounts vector should contain that
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// Thus the amounts vector will be "one" longer than the destinations vectort
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rctSig genRct(const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> amounts, const ctkeyM &mixRing, const key &base_hash, unsigned int index) {
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rctSig genRct(const key &message, const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> & amounts, const ctkeyM &mixRing, unsigned int index) {
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CHECK_AND_ASSERT_THROW_MES(amounts.size() == destinations.size() || amounts.size() == destinations.size() + 1, "Different number of amounts/destinations");
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CHECK_AND_ASSERT_THROW_MES(index < mixRing.size(), "Bad index into mixRing");
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for (size_t n = 0; n < mixRing.size(); ++n) {
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@ -543,6 +543,7 @@ namespace rct {
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}
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rctSig rv;
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rv.simple = false;
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rv.outPk.resize(destinations.size());
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rv.rangeSigs.resize(destinations.size());
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rv.ecdhInfo.resize(destinations.size());
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@ -578,23 +579,22 @@ namespace rct {
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key txnFeeKey = scalarmultH(d2h(rv.txnFee));
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rv.mixRing = mixRing;
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rv.base_hash = base_hash;
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rv.MG = proveRctMG(rv.mixRing, inSk, outSk, rv.outPk, index, txnFeeKey, base_hash);
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rv.message = message;
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rv.MG = proveRctMG(message, rv.mixRing, inSk, outSk, rv.outPk, index, txnFeeKey);
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return rv;
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}
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rctSig genRct(const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> amounts, const key &base_hash, const int mixin) {
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rctSig genRct(const key &message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> & amounts, const int mixin) {
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unsigned int index;
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ctkeyM mixRing;
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tie(mixRing, index) = populateFromBlockchain(inPk, mixin);
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return genRct(inSk, destinations, amounts, mixRing, base_hash, index);
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return genRct(message, inSk, destinations, amounts, mixRing, index);
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}
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//RCT simple
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//for post-rct only
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sRctSig genRctSimple(const key &message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> &inamounts, const vector<xmr_amount> &outamounts, xmr_amount txnFee, const ctkeyM & mixRing, const std::vector<unsigned int> & index) {
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rctSig genRctSimple(const key &message, const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> &inamounts, const vector<xmr_amount> &outamounts, xmr_amount txnFee, const ctkeyM & mixRing, const std::vector<unsigned int> & index) {
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CHECK_AND_ASSERT_THROW_MES(inamounts.size() > 0, "Empty inamounts");
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CHECK_AND_ASSERT_THROW_MES(inPk.size() == inSk.size(), "Different number of inPk/inSk");
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CHECK_AND_ASSERT_THROW_MES(inamounts.size() == inSk.size(), "Different number of inamounts/inSk");
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CHECK_AND_ASSERT_THROW_MES(outamounts.size() == destinations.size(), "Different number of amounts/destinations");
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CHECK_AND_ASSERT_THROW_MES(index.size() == inSk.size(), "Different number of index/inSk");
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@ -603,7 +603,8 @@ namespace rct {
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CHECK_AND_ASSERT_THROW_MES(index[n] < mixRing[n].size(), "Bad index into mixRing");
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}
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sRctSig rv;
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rctSig rv;
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rv.simple = true;
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rv.message = message;
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rv.outPk.resize(destinations.size());
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rv.rangeSigs.resize(destinations.size());
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@ -637,24 +638,24 @@ namespace rct {
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|||
// key txnFeeKey = scalarmultH(d2h(rv.txnFee));
|
||||
rv.mixRing = mixRing;
|
||||
rv.pseudoOuts.resize(inamounts.size());
|
||||
rv.MG.resize(inamounts.size());
|
||||
rv.MGs.resize(inamounts.size());
|
||||
key sumpouts = zero(); //sum pseudoOut masks
|
||||
key a;
|
||||
for (i = 0 ; i < inamounts.size() - 1; i++) {
|
||||
skGen(a);
|
||||
sc_add(sumpouts.bytes, a.bytes, sumpouts.bytes);
|
||||
genC(rv.pseudoOuts[i], a, inamounts[i]);
|
||||
rv.MG[i] = proveRctMGSimple(message, rv.mixRing[i], inSk[i], a, rv.pseudoOuts[i], index[i]);
|
||||
rv.MGs[i] = proveRctMGSimple(message, rv.mixRing[i], inSk[i], a, rv.pseudoOuts[i], index[i]);
|
||||
}
|
||||
rv.mixRing = mixRing;
|
||||
sc_sub(a.bytes, sumout.bytes, sumpouts.bytes);
|
||||
genC(rv.pseudoOuts[i], a, inamounts[i]);
|
||||
DP(rv.pseudoOuts[i]);
|
||||
rv.MG[i] = proveRctMGSimple(message, rv.mixRing[i], inSk[i], a, rv.pseudoOuts[i], index[i]);
|
||||
rv.MGs[i] = proveRctMGSimple(message, rv.mixRing[i], inSk[i], a, rv.pseudoOuts[i], index[i]);
|
||||
return rv;
|
||||
}
|
||||
|
||||
sRctSig genRctSimple(const key &message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> &inamounts, const vector<xmr_amount> &outamounts, xmr_amount txnFee, unsigned int mixin) {
|
||||
rctSig genRctSimple(const key &message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> &inamounts, const vector<xmr_amount> &outamounts, xmr_amount txnFee, unsigned int mixin) {
|
||||
std::vector<unsigned int> index;
|
||||
index.resize(inPk.size());
|
||||
ctkeyM mixRing;
|
||||
|
|
@ -663,7 +664,7 @@ namespace rct {
|
|||
mixRing[i].resize(mixin+1);
|
||||
index[i] = populateFromBlockchainSimple(mixRing[i], inPk[i], mixin);
|
||||
}
|
||||
return genRctSimple(message, inSk, inPk, destinations, inamounts, outamounts, txnFee, mixRing, index);
|
||||
return genRctSimple(message, inSk, destinations, inamounts, outamounts, txnFee, mixRing, index);
|
||||
}
|
||||
|
||||
//RingCT protocol
|
||||
|
|
@ -676,7 +677,8 @@ namespace rct {
|
|||
//decodeRct: (c.f. http://eprint.iacr.org/2015/1098 section 5.1.1)
|
||||
// uses the attached ecdh info to find the amounts represented by each output commitment
|
||||
// must know the destination private key to find the correct amount, else will return a random number
|
||||
bool verRct(const rctSig & rv, const ctkeyM &mixRing, const keyV &II, const key &base_hash) {
|
||||
bool verRct(const rctSig & rv, const ctkeyM &mixRing, const keyV &II, const key &message) {
|
||||
CHECK_AND_ASSERT_MES(!rv.simple, false, "verRct called on simple rctSig");
|
||||
CHECK_AND_ASSERT_MES(rv.outPk.size() == rv.rangeSigs.size(), false, "Mismatched sizes of rv.outPk and rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_MES(rv.outPk.size() == rv.ecdhInfo.size(), false, "Mismatched sizes of rv.outPk and rv.ecdhInfo");
|
||||
|
||||
|
|
@ -694,7 +696,7 @@ namespace rct {
|
|||
}
|
||||
//compute txn fee
|
||||
key txnFeeKey = scalarmultH(d2h(rv.txnFee));
|
||||
bool mgVerd = verRctMG(rv.MG, II, mixRing, rv.outPk, txnFeeKey, base_hash);
|
||||
bool mgVerd = verRctMG(rv.MG, II, mixRing, rv.outPk, txnFeeKey, message);
|
||||
DP("mg sig verified?");
|
||||
DP(mgVerd);
|
||||
|
||||
|
|
@ -706,19 +708,28 @@ namespace rct {
|
|||
}
|
||||
}
|
||||
bool verRct(const rctSig & rv) {
|
||||
return verRct(rv, rv.mixRing, rv.MG.II, rv.base_hash);
|
||||
return verRct(rv, rv.mixRing, rv.MG.II, rv.message);
|
||||
}
|
||||
|
||||
//ver RingCT simple
|
||||
//assumes only post-rct style inputs (at least for max anonymity)
|
||||
bool verRctSimple(const sRctSig & rv) {
|
||||
bool verRctSimple(const rctSig & rv, const ctkeyM &mixRing, const std::vector<keyV> *II, const key &message) {
|
||||
size_t i = 0;
|
||||
bool rvb = true;
|
||||
|
||||
CHECK_AND_ASSERT_MES(rv.simple, false, "verRctSimple called on non simple rctSig");
|
||||
CHECK_AND_ASSERT_MES(rv.outPk.size() == rv.rangeSigs.size(), false, "Mismatched sizes of rv.outPk and rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_MES(rv.outPk.size() == rv.ecdhInfo.size(), false, "Mismatched sizes of rv.outPk and rv.ecdhInfo");
|
||||
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == rv.MGs.size(), false, "Mismatched sizes of rv.pseudoOuts and rv.MGs");
|
||||
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == rv.mixRing.size(), false, "Mismatched sizes of rv.pseudoOuts and rv.MGs");
|
||||
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == mixRing.size(), false, "Mismatched sizes of rv.pseudoOuts and mixRing");
|
||||
CHECK_AND_ASSERT_MES(!II || II->size() == mixRing.size(), false, "Mismatched II/mixRing size");
|
||||
if (II)
|
||||
{
|
||||
for (size_t n = 0; n < II->size(); ++n)
|
||||
{
|
||||
CHECK_AND_ASSERT_MES((*II)[n].size() == 2, false, "Bad II size");
|
||||
}
|
||||
}
|
||||
|
||||
key sumOutpks = identity();
|
||||
for (i = 0; i < rv.outPk.size(); i++) {
|
||||
|
|
@ -733,8 +744,8 @@ namespace rct {
|
|||
|
||||
bool tmpb = false;
|
||||
key sumPseudoOuts = identity();
|
||||
for (i = 0 ; i < rv.mixRing.size() ; i++) {
|
||||
tmpb = verRctMGSimple(rv.message, rv.MG[i], rv.MG[i].II, rv.mixRing[i], rv.pseudoOuts[i]);
|
||||
for (i = 0 ; i < mixRing.size() ; i++) {
|
||||
tmpb = verRctMGSimple(message, rv.MGs[i], II ? (*II)[i] : rv.MGs[i].II, mixRing[i], rv.pseudoOuts[i]);
|
||||
addKeys(sumPseudoOuts, sumPseudoOuts, rv.pseudoOuts[i]);
|
||||
DP(tmpb);
|
||||
if (!tmpb) {
|
||||
|
|
@ -755,6 +766,10 @@ namespace rct {
|
|||
return (rvb && mgVerd);
|
||||
}
|
||||
|
||||
bool verRctSimple(const rctSig & rv) {
|
||||
return verRctSimple(rv, rv.mixRing, NULL, rv.message);
|
||||
}
|
||||
|
||||
//RingCT protocol
|
||||
//genRct:
|
||||
// creates an rctSig with all data necessary to verify the rangeProofs and that the signer owns one of the
|
||||
|
|
@ -766,6 +781,7 @@ namespace rct {
|
|||
// uses the attached ecdh info to find the amounts represented by each output commitment
|
||||
// must know the destination private key to find the correct amount, else will return a random number
|
||||
xmr_amount decodeRct(const rctSig & rv, const key & sk, unsigned int i, key & mask) {
|
||||
CHECK_AND_ASSERT_MES(!rv.simple, false, "decodeRct called on simple rctSig");
|
||||
CHECK_AND_ASSERT_THROW_MES(rv.rangeSigs.size() > 0, "Empty rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_THROW_MES(rv.outPk.size() == rv.rangeSigs.size(), "Mismatched sizes of rv.outPk and rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_THROW_MES(i < rv.ecdhInfo.size(), "Bad index");
|
||||
|
|
@ -793,7 +809,8 @@ namespace rct {
|
|||
return decodeRct(rv, sk, i, mask);
|
||||
}
|
||||
|
||||
xmr_amount decodeRct(const sRctSig & rv, const key & sk, unsigned int i) {
|
||||
xmr_amount decodeRctSimple(const rctSig & rv, const key & sk, unsigned int i, key &mask) {
|
||||
CHECK_AND_ASSERT_MES(rv.simple, false, "decodeRct called on non simple rctSig");
|
||||
CHECK_AND_ASSERT_THROW_MES(rv.rangeSigs.size() > 0, "Empty rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_THROW_MES(rv.outPk.size() == rv.rangeSigs.size(), "Mismatched sizes of rv.outPk and rv.rangeSigs");
|
||||
CHECK_AND_ASSERT_THROW_MES(i < rv.ecdhInfo.size(), "Bad index");
|
||||
|
|
@ -801,7 +818,7 @@ namespace rct {
|
|||
//mask amount and mask
|
||||
ecdhTuple ecdh_info = rv.ecdhInfo[i];
|
||||
ecdhDecode(ecdh_info, sk);
|
||||
key mask = ecdh_info.mask;
|
||||
mask = ecdh_info.mask;
|
||||
key amount = ecdh_info.amount;
|
||||
key C = rv.outPk[i].mask;
|
||||
DP("C");
|
||||
|
|
@ -815,4 +832,9 @@ namespace rct {
|
|||
}
|
||||
return h2d(amount);
|
||||
}
|
||||
|
||||
xmr_amount decodeRctSimple(const rctSig & rv, const key & sk, unsigned int i) {
|
||||
key mask;
|
||||
return decodeRctSimple(rv, sk, i, mask);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -112,9 +112,9 @@ namespace rct {
|
|||
// this shows that sum inputs = sum outputs
|
||||
//Ver:
|
||||
// verifies the above sig is created corretly
|
||||
mgSig proveRctMG(const ctkeyM & pubs, const ctkeyV & inSk, const keyV &outMasks, const ctkeyV & outPk, unsigned int index, key txnFee, const key &base_hash);
|
||||
mgSig proveRctMG(const ctkeyM & pubs, const ctkeyV & inSk, const keyV &outMasks, const ctkeyV & outPk, unsigned int index, key txnFee, const key &message);
|
||||
mgSig proveRctMGSimple(const key & message, const ctkeyV & pubs, const ctkey & inSk, const key &a , const key &Cout, unsigned int index);
|
||||
bool verRctMG(mgSig mg, const ctkeyM & pubs, const ctkeyV & outPk, key txnFee, const key &base_hash);
|
||||
bool verRctMG(mgSig mg, const ctkeyM & pubs, const ctkeyV & outPk, key txnFee, const key &message);
|
||||
bool verRctMGSimple(const key &message, const mgSig &mg, const keyV &II, const ctkeyV & pubs, const key & C);
|
||||
|
||||
//These functions get keys from blockchain
|
||||
|
|
@ -135,16 +135,18 @@ namespace rct {
|
|||
//decodeRct: (c.f. http://eprint.iacr.org/2015/1098 section 5.1.1)
|
||||
// uses the attached ecdh info to find the amounts represented by each output commitment
|
||||
// must know the destination private key to find the correct amount, else will return a random number
|
||||
rctSig genRct(const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> amounts, const ctkeyM &mixRing, const key &bash_hash, unsigned int index);
|
||||
rctSig genRct(const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> amounts, const key &bash_hash, const int mixin);
|
||||
sRctSig genRctSimple(const key & message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> & inamounts, const vector<xmr_amount> & outamounts, xmr_amount txnFee, unsigned int mixin);
|
||||
sRctSig genRctSimple(const key & message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> & inamounts, const vector<xmr_amount> & outamounts, xmr_amount txnFee, const ctkeyM & mixRing, const std::vector<unsigned int> & index);
|
||||
rctSig genRct(const key &message, const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> & amounts, const ctkeyM &mixRing, unsigned int index);
|
||||
rctSig genRct(const key &message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> & amounts, const int mixin);
|
||||
rctSig genRctSimple(const key & message, const ctkeyV & inSk, const ctkeyV & inPk, const keyV & destinations, const vector<xmr_amount> & inamounts, const vector<xmr_amount> & outamounts, xmr_amount txnFee, unsigned int mixin);
|
||||
rctSig genRctSimple(const key & message, const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> & inamounts, const vector<xmr_amount> & outamounts, xmr_amount txnFee, const ctkeyM & mixRing, const std::vector<unsigned int> & index);
|
||||
bool verRct(const rctSig & rv);
|
||||
bool verRct(const rctSig & rv, const ctkeyM &mixRing, const keyV &II, const key &base_hash);
|
||||
bool verRctSimple(const sRctSig & rv);
|
||||
bool verRct(const rctSig & rv, const ctkeyM &mixRing, const keyV &II, const key &message);
|
||||
bool verRctSimple(const rctSig & rv);
|
||||
bool verRctSimple(const rctSig & rv, const ctkeyM &mixRing, const std::vector<keyV> *II, const key &message);
|
||||
xmr_amount decodeRct(const rctSig & rv, const key & sk, unsigned int i, key & mask);
|
||||
xmr_amount decodeRct(const rctSig & rv, const key & sk, unsigned int i);
|
||||
xmr_amount decodeRct(const sRctSig & rv, const key & sk, unsigned int i);
|
||||
xmr_amount decodeRctSimple(const rctSig & rv, const key & sk, unsigned int i);
|
||||
xmr_amount decodeRctSimple(const rctSig & rv, const key & sk, unsigned int i, key & mask);
|
||||
}
|
||||
#endif /* RCTSIGS_H */
|
||||
|
||||
|
|
|
|||
|
|
@ -183,43 +183,28 @@ namespace rct {
|
|||
// outPk contains public keypairs which are destinations (P, C),
|
||||
// P = address, C = commitment to amount
|
||||
struct rctSig {
|
||||
vector<rangeSig> rangeSigs;
|
||||
mgSig MG;
|
||||
ctkeyM mixRing; //the set of all pubkeys / copy
|
||||
//pairs that you mix with
|
||||
vector<ecdhTuple> ecdhInfo;
|
||||
ctkeyV outPk;
|
||||
xmr_amount txnFee;
|
||||
key base_hash;
|
||||
|
||||
BEGIN_SERIALIZE_OBJECT()
|
||||
FIELD(rangeSigs)
|
||||
FIELD(MG)
|
||||
// FIELD(mixRing) - not serialized, it can be reconstructed
|
||||
FIELD(ecdhInfo)
|
||||
FIELD(outPk)
|
||||
FIELD(txnFee)
|
||||
// FIELD(base_hash) - not serialized, it can be reconstructed
|
||||
END_SERIALIZE()
|
||||
};
|
||||
|
||||
//rct simple variant
|
||||
struct sRctSig {
|
||||
bool simple;
|
||||
key message;
|
||||
vector<rangeSig> rangeSigs;
|
||||
vector<mgSig> MG;
|
||||
vector<ctkeyV> mixRing; //the set of all pubkeys / copy
|
||||
mgSig MG; // for non simple rct
|
||||
vector<mgSig> MGs; // for simple rct
|
||||
ctkeyM mixRing; //the set of all pubkeys / copy
|
||||
//pairs that you mix with
|
||||
keyV pseudoOuts; //C
|
||||
keyV pseudoOuts; //C - for simple rct
|
||||
vector<ecdhTuple> ecdhInfo;
|
||||
ctkeyV outPk;
|
||||
xmr_amount txnFee; // contains b
|
||||
|
||||
BEGIN_SERIALIZE_OBJECT()
|
||||
FIELD(simple)
|
||||
// FIELD(message) - not serialized, it can be reconstructed
|
||||
FIELD(rangeSigs)
|
||||
if (simple)
|
||||
FIELD(MGs)
|
||||
else
|
||||
FIELD(MG)
|
||||
// FIELD(mixRing) - not serialized, it can be reconstructed
|
||||
if (simple)
|
||||
FIELD(pseudoOuts)
|
||||
FIELD(ecdhInfo)
|
||||
FIELD(outPk)
|
||||
|
|
|
|||
|
|
@ -193,6 +193,14 @@ void wallet2::check_acc_out(const account_keys &acc, const tx_out &o, const cryp
|
|||
error = false;
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------
|
||||
static uint64_t decodeRct(const rct::rctSig & rv, const rct::key & sk, unsigned int i, rct::key & mask)
|
||||
{
|
||||
if (rv.simple)
|
||||
return rct::decodeRctSimple(rv, sk, i, mask);
|
||||
else
|
||||
return rct::decodeRct(rv, sk, i, mask);
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------
|
||||
void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_t height, uint64_t ts, bool miner_tx, bool pool)
|
||||
{
|
||||
if (!miner_tx)
|
||||
|
|
@ -251,7 +259,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
|
|||
|
||||
outs.push_back(0);
|
||||
if (money_transfered == 0)
|
||||
money_transfered = rct::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[0].sec), 0, mask[0]);
|
||||
money_transfered = tools::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[0].sec), 0, mask[0]);
|
||||
amount[0] = money_transfered;
|
||||
tx_money_got_in_outs = money_transfered;
|
||||
|
||||
|
|
@ -290,7 +298,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
|
|||
|
||||
outs.push_back(i);
|
||||
if (money_transfered[i] == 0)
|
||||
money_transfered[i] = rct::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
money_transfered[i] = tools::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
tx_money_got_in_outs += money_transfered[i];
|
||||
amount[i] = money_transfered[i];
|
||||
}
|
||||
|
|
@ -334,7 +342,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
|
|||
|
||||
outs.push_back(i);
|
||||
if (money_transfered[i] == 0)
|
||||
money_transfered[i] = rct::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
money_transfered[i] = tools::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
tx_money_got_in_outs += money_transfered[i];
|
||||
amount[i] = money_transfered[i];
|
||||
}
|
||||
|
|
@ -362,7 +370,7 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
|
|||
|
||||
outs.push_back(i);
|
||||
if (money_transfered == 0)
|
||||
money_transfered = rct::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
money_transfered = tools::decodeRct(tx.rct_signatures, rct::sk2rct(in_ephemeral[i].sec), i, mask[i]);
|
||||
amount[i] = money_transfered;
|
||||
tx_money_got_in_outs += money_transfered;
|
||||
}
|
||||
|
|
@ -3008,19 +3016,29 @@ static size_t estimate_rct_tx_size(int n_inputs, int mixin, int n_outputs)
|
|||
|
||||
// rct signatures
|
||||
|
||||
// simple
|
||||
size += 1;
|
||||
|
||||
// message
|
||||
size += 32;
|
||||
|
||||
// rangeSigs
|
||||
size += (2*64*32+32+64*32) * n_outputs;
|
||||
|
||||
// MG - only the last slot of II is saved, the rest can be reconstructed
|
||||
size += 32 * (mixin+1) * n_inputs + 32 + 32 * (/*n_inputs+*/1) ;
|
||||
// MGs - only the last slot of II is saved, the rest can be reconstructed
|
||||
size += n_inputs * (32 * (mixin+1) * n_inputs + 32 + 32 * (/*n_inputs+*/1));
|
||||
|
||||
// mixRing - not serialized, can be reconstructed
|
||||
/* size += 2 * 32 * (mixin+1) * n_inputs; */
|
||||
|
||||
// pseudoOuts
|
||||
size += 32 * n_outputs;
|
||||
// ecdhInfo
|
||||
size += 3 * 32 * n_outputs;
|
||||
// outPk
|
||||
size += 2 * 32 * n_outputs;
|
||||
// txnFee
|
||||
size += 4;
|
||||
|
||||
LOG_PRINT_L2("estimated rct tx size for " << n_inputs << " at mixin " << mixin << " and " << n_outputs << ": " << size << " (" << (32 * n_inputs + 2 * 32 * (mixin+1) * n_inputs) << " saved)");
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return size;
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@ -127,6 +127,9 @@ bool gen_rct_tx_validation_base::generate_with(std::vector<test_event_entry>& ev
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cryptonote::keypair in_ephemeral;
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crypto::key_image ki;
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cryptonote::generate_key_image_helper(miner_accounts[n].get_keys(), tx_pub_key, o, in_ephemeral, ki);
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if (rct_txes[n].rct_signatures.simple)
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rct::decodeRctSimple(rct_txes[n].rct_signatures, rct::sk2rct(in_ephemeral.sec), o, rct_tx_masks[o+n*4]);
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else
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rct::decodeRct(rct_txes[n].rct_signatures, rct::sk2rct(in_ephemeral.sec), o, rct_tx_masks[o+n*4]);
|
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}
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|
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|
|
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@ -187,7 +187,7 @@ TEST(ringct, range_proofs)
|
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destinations.push_back(Pk);
|
||||
|
||||
//compute rct data with mixin 500
|
||||
rctSig s = genRct(sc, pc, destinations, amounts, rct::zero(), 3);
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rctSig s = genRct(rct::zero(), sc, pc, destinations, amounts, 3);
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|
||||
//verify rct data
|
||||
ASSERT_TRUE(verRct(s));
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|
@ -204,7 +204,7 @@ TEST(ringct, range_proofs)
|
|||
|
||||
|
||||
//compute rct data with mixin 500
|
||||
s = genRct(sc, pc, destinations, amounts, rct::zero(), 3);
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s = genRct(rct::zero(), sc, pc, destinations, amounts, 3);
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||||
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||||
//verify rct data
|
||||
ASSERT_FALSE(verRct(s));
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@ -248,7 +248,7 @@ TEST(ringct, range_proofs_with_fee)
|
|||
destinations.push_back(Pk);
|
||||
|
||||
//compute rct data with mixin 500
|
||||
rctSig s = genRct(sc, pc, destinations, amounts, rct::zero(), 3);
|
||||
rctSig s = genRct(rct::zero(), sc, pc, destinations, amounts, 3);
|
||||
|
||||
//verify rct data
|
||||
ASSERT_TRUE(verRct(s));
|
||||
|
|
@ -265,7 +265,7 @@ TEST(ringct, range_proofs_with_fee)
|
|||
|
||||
|
||||
//compute rct data with mixin 500
|
||||
s = genRct(sc, pc, destinations, amounts, rct::zero(), 3);
|
||||
s = genRct(rct::zero(), sc, pc, destinations, amounts, 3);
|
||||
|
||||
//verify rct data
|
||||
ASSERT_FALSE(verRct(s));
|
||||
|
|
@ -274,6 +274,60 @@ TEST(ringct, range_proofs_with_fee)
|
|||
ASSERT_TRUE(decodeRct(s, Sk, 1));
|
||||
}
|
||||
|
||||
TEST(ringct, simple)
|
||||
{
|
||||
ctkeyV sc, pc;
|
||||
ctkey sctmp, pctmp;
|
||||
//this vector corresponds to output amounts
|
||||
vector<xmr_amount>outamounts;
|
||||
//this vector corresponds to input amounts
|
||||
vector<xmr_amount>inamounts;
|
||||
//this keyV corresponds to destination pubkeys
|
||||
keyV destinations;
|
||||
|
||||
//add fake input 3000
|
||||
//the sc is secret data
|
||||
//pc is public data
|
||||
tie(sctmp, pctmp) = ctskpkGen(3000);
|
||||
sc.push_back(sctmp);
|
||||
pc.push_back(pctmp);
|
||||
inamounts.push_back(3000);
|
||||
|
||||
//add fake input 3000
|
||||
//the sc is secret data
|
||||
//pc is public data
|
||||
tie(sctmp, pctmp) = ctskpkGen(3000);
|
||||
sc.push_back(sctmp);
|
||||
pc.push_back(pctmp);
|
||||
inamounts.push_back(3000);
|
||||
|
||||
//add output 5000
|
||||
outamounts.push_back(5000);
|
||||
//add the corresponding destination pubkey
|
||||
key Sk, Pk;
|
||||
skpkGen(Sk, Pk);
|
||||
destinations.push_back(Pk);
|
||||
|
||||
//add output 999
|
||||
outamounts.push_back(999);
|
||||
//add the corresponding destination pubkey
|
||||
skpkGen(Sk, Pk);
|
||||
destinations.push_back(Pk);
|
||||
|
||||
key message = skGen(); //real message later (hash of txn..)
|
||||
|
||||
//compute sig with mixin 2
|
||||
xmr_amount txnfee = 1;
|
||||
|
||||
rctSig s = genRctSimple(message, sc, pc, destinations,inamounts, outamounts, txnfee, 2);
|
||||
|
||||
//verify ring ct signature
|
||||
ASSERT_TRUE(verRctSimple(s));
|
||||
|
||||
//decode received amount corresponding to output pubkey index 1
|
||||
ASSERT_TRUE(decodeRctSimple(s, Sk, 1));
|
||||
}
|
||||
|
||||
static rct::rctSig make_sample_rct_sig(int n_inputs, const uint64_t input_amounts[], int n_outputs, const uint64_t output_amounts[], bool last_is_fee)
|
||||
{
|
||||
ctkeyV sc, pc;
|
||||
|
|
@ -295,7 +349,7 @@ static rct::rctSig make_sample_rct_sig(int n_inputs, const uint64_t input_amount
|
|||
destinations.push_back(Pk);
|
||||
}
|
||||
|
||||
return genRct(sc, pc, destinations, amounts, rct::zero(), 3);;
|
||||
return genRct(rct::zero(), sc, pc, destinations, amounts, 3);;
|
||||
}
|
||||
|
||||
static bool range_proof_test(bool expected_valid,
|
||||
|
|
|
|||
|
|
@ -565,7 +565,7 @@ TEST(Serialization, serializes_ringct_types)
|
|||
rct::skpkGen(Sk, Pk);
|
||||
destinations.push_back(Pk);
|
||||
//compute rct data with mixin 500
|
||||
s0 = rct::genRct(sc, pc, destinations, amounts, rct::zero(), 3);
|
||||
s0 = rct::genRct(rct::zero(), sc, pc, destinations, amounts, 3);
|
||||
|
||||
mg0 = s0.MG;
|
||||
ASSERT_TRUE(serialization::dump_binary(mg0, blob));
|
||||
|
|
@ -588,6 +588,7 @@ TEST(Serialization, serializes_ringct_types)
|
|||
|
||||
ASSERT_TRUE(serialization::dump_binary(s0, blob));
|
||||
ASSERT_TRUE(serialization::parse_binary(blob, s1));
|
||||
ASSERT_TRUE(s0.simple == s1.simple);
|
||||
ASSERT_TRUE(s0.rangeSigs.size() == s1.rangeSigs.size());
|
||||
for (size_t n = 0; n < s0.rangeSigs.size(); ++n)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue