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Merge pull request #1996
a6d5bb75
wallet2: refer to triangular distribution for recent zone in comment (moneromooo-monero)ac1aba90
wallet2: bias fake outs more towards recent outputs (moneromooo-monero)
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9a9fb0483f
@ -82,8 +82,8 @@ using namespace cryptonote;
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#define UNSIGNED_TX_PREFIX "Monero unsigned tx set\003"
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#define SIGNED_TX_PREFIX "Monero signed tx set\003"
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#define RECENT_OUTPUT_RATIO (0.25) // 25% of outputs are from the recent zone
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#define RECENT_OUTPUT_ZONE (5 * 86400) // last 5 days are the recent zone
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#define RECENT_OUTPUT_RATIO (0.5) // 50% of outputs are from the recent zone
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#define RECENT_OUTPUT_ZONE ((time_t)(1.8 * 86400)) // last 1.8 day makes up the recent zone (taken from monerolink.pdf, Miller et al)
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#define FEE_ESTIMATE_GRACE_BLOCKS 10 // estimate fee valid for that many blocks
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@ -3651,7 +3651,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
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uint64_t i;
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if (num_found - 1 < recent_outputs_count) // -1 to account for the real one we seeded with
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{
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// equiprobable distribution over the recent outs
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// triangular distribution over [a,b) with a=0, mode c=b=up_index_limit
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uint64_t r = crypto::rand<uint64_t>() % ((uint64_t)1 << 53);
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double frac = std::sqrt((double)r / ((uint64_t)1 << 53));
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i = (uint64_t)(frac*num_recent_outs) + num_outs - num_recent_outs;
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