def get_destination_view_key_pub(destinations, change_addr=None):
"""
Returns destination address public view key
:param destinations:
:type destinations: list[apps.monero.xmr.serialize_messages.tx_construct.TxDestinationEntry]
:param change_addr:
:return:
"""
from monero_glue.xmr.sub.addr import addr_eq
addr = AccountPublicAddress(
m_spend_public_key=crypto.NULL_KEY_ENC, m_view_public_key=crypto.NULL_KEY_ENC
)
count = 0
for dest in destinations:
if dest.amount == 0:
continue
if change_addr and addr_eq(dest.addr, change_addr):
continue
if addr_eq(dest.addr, addr):
continue
if count > 0:
return crypto.NULL_KEY_ENC
addr = dest.addr
count += 1
return addr.m_view_public_key
def check_change(self, outputs):
"""
Checks if the change address is among tx outputs.
:param outputs:
:return:
"""
from monero_glue.xmr.sub.addr import addr_eq
change_addr = self.change_address()
if change_addr is None:
return
for out in outputs:
if addr_eq(out.addr, change_addr):
return True
raise ValueError("Change address not found in outputs")
async def adjust_change(self, tx):
logger.debug("Change addr adjust")
out_txs2 = await self.reformat_outs(tx.splitted_dsts)
change_dts = await self.reformat_out(tx.change_dts) if tx.change_dts else None
change_idx = addr.get_change_addr_idx(out_txs2, change_dts)
if change_idx is None:
logger.warning('Change address not found in outputs, dts: %s' % (change_dts, ))
for ii in out_txs2:
logger.warning('Out: %s' % ii)
# Find addr that matches and adapt value in change dst
for idx, ii in enumerate(out_txs2):
if addr.addr_eq(change_dts.addr, ii.addr):
logger.info('Found surrogate change addr: [%s] %s' % (idx, ii))
change_dts.amount = ii.amount
change_idx = idx
break
if self.args.outs_subs:
for ix, o in enumerate(tx.splitted_dsts):
if change_idx is None or ix != change_idx:
o.is_subaddress = True
if change_idx is None:
logger.warning('Could not fix change addr')
return
change_addr = await self.primary_change_address(
self.dest_keys, self.dest_sub_major
)
tx.change_dts.amount = change_dts.amount
tx.change_dts.addr.m_spend_public_key = change_addr.spend_public_key
tx.change_dts.addr.m_view_public_key = change_addr.view_public_key
logger.debug("Change addr adjust @idx: %s, spend key: %s"
% (change_idx, binascii.hexlify(change_addr.spend_public_key)))
tx.splitted_dsts[
change_idx
].addr.m_spend_public_key = change_addr.spend_public_key
tx.splitted_dsts[
change_idx
].addr.m_view_public_key = change_addr.view_public_key
return change_idx
def _get_integrated_idx(self, outputs, aux_data=None):
if aux_data is None or aux_data.destinations is None:
return []
integrated_indices = []
integrated_pairs = []
for idx, cur in enumerate(aux_data.destinations):
ainfo = cur[0]
if ainfo.is_integrated:
caddr = xmr_addr.build_address(ainfo.spend_key, ainfo.view_key)
integrated_pairs.append((caddr, cur[1]))
for idx, dst in enumerate(outputs):
for ipair in integrated_pairs:
if xmr_addr.addr_eq(ipair[0],
dst.addr) and dst.amount == ipair[1]:
integrated_indices.append(idx)
logger.debug("Integrated indices: %s" % len(integrated_indices))
return integrated_indices
async def _set_out1_derivation(self, dst_entr, additional_txkey_priv):
from monero_glue.xmr.sub.addr import addr_eq
change_addr = self.change_address()
if change_addr and addr_eq(dst_entr.addr, change_addr):
# sending change to yourself; derivation = a*R
derivation = monero.generate_key_derivation(
self.r_pub, self.creds.view_key_private
)
else:
# sending to the recipient; derivation = r*A (or s*C in the subaddress scheme)
deriv_priv = (
additional_txkey_priv
if dst_entr.is_subaddress and self.need_additional_txkeys
else self.r
)
derivation = monero.generate_key_derivation(
crypto.decodepoint(dst_entr.addr.m_view_public_key), deriv_priv
)
return derivation