tiamak/salvium
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

New scheme key destination contrfol

Browse Source 
Implies protocol version management.
This commit is contained in:
cslashm
2018-12-11 10:20:21 +01:00
parent 31bdf7bd11
commit 460da140ec
7 changed files with 233 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/cryptonote_core/cryptonote_tx_utils.cpp
+4 -41
View File
@@ -405,49 +405,12 @@ namespace cryptonote
for(const tx_destination_entry& dst_entr: destinations)
{
CHECK_AND_ASSERT_MES(dst_entr.amount > 0 || tx.version > 1, false, "Destination with wrong amount: " << dst_entr.amount);
crypto::key_derivation derivation;
crypto::public_key out_eph_public_key;
// make additional tx pubkey if necessary
keypair additional_txkey;
if (need_additional_txkeys)
{
additional_txkey.sec = additional_tx_keys[output_index];
if (dst_entr.is_subaddress)
additional_txkey.pub = rct::rct2pk(hwdev.scalarmultKey(rct::pk2rct(dst_entr.addr.m_spend_public_key), rct::sk2rct(additional_txkey.sec)));
else
additional_txkey.pub = rct::rct2pk(hwdev.scalarmultBase(rct::sk2rct(additional_txkey.sec)));
}
bool r;
if (change_addr && dst_entr.addr == *change_addr)
{
// sending change to yourself; derivation = a*R
r = hwdev.generate_key_derivation(txkey_pub, sender_account_keys.m_view_secret_key, derivation);
CHECK_AND_ASSERT_MES(r, false, "at creation outs: failed to generate_key_derivation(" << txkey_pub << ", " << sender_account_keys.m_view_secret_key << ")");
}
else
{
// sending to the recipient; derivation = r*A (or s*C in the subaddress scheme)
r = hwdev.generate_key_derivation(dst_entr.addr.m_view_public_key, dst_entr.is_subaddress && need_additional_txkeys ? additional_txkey.sec : tx_key, derivation);
CHECK_AND_ASSERT_MES(r, false, "at creation outs: failed to generate_key_derivation(" << dst_entr.addr.m_view_public_key << ", " << (dst_entr.is_subaddress && need_additional_txkeys ? additional_txkey.sec : tx_key) << ")");
}
if (need_additional_txkeys)
{
additional_tx_public_keys.push_back(additional_txkey.pub);
}
if (tx.version > 1)
{
crypto::secret_key scalar1;
hwdev.derivation_to_scalar(derivation, output_index, scalar1);
amount_keys.push_back(rct::sk2rct(scalar1));
}
r = hwdev.derive_public_key(derivation, output_index, dst_entr.addr.m_spend_public_key, out_eph_public_key);
CHECK_AND_ASSERT_MES(r, false, "at creation outs: failed to derive_public_key(" << derivation << ", " << output_index << ", "<< dst_entr.addr.m_spend_public_key << ")");
hwdev.add_output_key_mapping(dst_entr.addr.m_view_public_key, dst_entr.addr.m_spend_public_key, dst_entr.is_subaddress, output_index, amount_keys.back(), out_eph_public_key);
hwdev.generate_output_ephemeral_keys(tx.version,sender_account_keys, txkey_pub, tx_key,
dst_entr, change_addr, output_index,
need_additional_txkeys, additional_tx_keys,
additional_tx_public_keys, amount_keys, out_eph_public_key);
tx_out out;
out.amount = dst_entr.amount;