increase minimum mixin to 4 on hard fork 5
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0815c72df7
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@ -2330,6 +2330,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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{
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{
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size_t n_unmixable = 0, n_mixable = 0;
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size_t n_unmixable = 0, n_mixable = 0;
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size_t mixin = std::numeric_limits<size_t>::max();
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size_t mixin = std::numeric_limits<size_t>::max();
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const size_t min_mixin = hf_version >= 5 ? 4 : 2;
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for (const auto& txin : tx.vin)
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for (const auto& txin : tx.vin)
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{
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{
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// non txin_to_key inputs will be rejected below
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// non txin_to_key inputs will be rejected below
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@ -2348,7 +2349,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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uint64_t n_outputs = m_db->get_num_outputs(in_to_key.amount);
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uint64_t n_outputs = m_db->get_num_outputs(in_to_key.amount);
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LOG_PRINT_L2("output size " << print_money(in_to_key.amount) << ": " << n_outputs << " available");
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LOG_PRINT_L2("output size " << print_money(in_to_key.amount) << ": " << n_outputs << " available");
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// n_outputs includes the output we're considering
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// n_outputs includes the output we're considering
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if (n_outputs <= 2)
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if (n_outputs <= min_mixin)
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++n_unmixable;
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++n_unmixable;
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else
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else
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++n_mixable;
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++n_mixable;
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@ -2358,7 +2359,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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}
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}
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}
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}
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if (mixin < 2)
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if (mixin < min_mixin)
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{
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{
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if (n_unmixable == 0)
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if (n_unmixable == 0)
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{
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{
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