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New "Halfway RingCT" outputs for coinbase transactions

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When RingCT is enabled, outputs from coinbase transactions
are created as a single output, and stored as RingCT output,
with a fake mask. Their amount is not hidden on the blockchain
itself, but they are then able to be used as fake inputs in
a RingCT ring. Since the output amounts are hidden, their
"dustiness" is not an obstacle anymore to mixing, and this
makes the coinbase transactions a lot smaller, as well as
helping the TXO set to grow more slowly.

Also add a new "Null" type of rct signature, which decreases
the size required when no signatures are to be stored, as
in a coinbase tx.
This commit is contained in:
moneromooo-monero
2016-08-12 18:45:07 +01:00
parent 6f526cdff8
commit c3b3260ae5
19 changed files with 120 additions and 36 deletions
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19
src/wallet/wallet2.h
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@@ -108,8 +108,9 @@ namespace tools
crypto::key_image m_key_image; //TODO: key_image stored twice :(
rct::key m_mask;
uint64_t m_amount;
bool m_rct;
bool is_rct() const { return m_tx.vout[m_internal_output_index].amount == 0; }
bool is_rct() const { return m_rct; }
uint64_t amount() const { return m_amount; }
};
@@ -502,7 +503,7 @@ namespace tools
};
}
BOOST_CLASS_VERSION(tools::wallet2, 14)
BOOST_CLASS_VERSION(tools::wallet2::transfer_details, 3)
BOOST_CLASS_VERSION(tools::wallet2::transfer_details, 4)
BOOST_CLASS_VERSION(tools::wallet2::payment_details, 1)
BOOST_CLASS_VERSION(tools::wallet2::unconfirmed_transfer_details, 5)
BOOST_CLASS_VERSION(tools::wallet2::confirmed_transfer_details, 2)
@@ -527,6 +528,10 @@ namespace boost
{
x.m_spent_height = 0;
}
if (ver < 4)
{
x.m_rct = x.m_tx.vout[x.m_internal_output_index].amount == 0;
}
}
template <class Archive>
@@ -563,8 +568,17 @@ namespace boost
}
a & x.m_spent_height;
if (ver < 3)
{
initialize_transfer_details(a, x, ver);
return;
}
a & x.m_txid;
if (ver < 4)
{
initialize_transfer_details(a, x, ver);
return;
}
a & x.m_rct;
}
template <class Archive>
@@ -770,6 +784,7 @@ namespace tools
cryptonote::tx_source_entry& src = sources.back();
transfer_details& td = *it;
src.amount = td.amount();
src.rct = false;
//paste mixin transaction
if(daemon_resp.outs.size())
{