def show_qr(self):
text = bfh(str(self.tx))
text = base_encode(text, base=43)
try:
self.main_window.show_qrcode(text, _('Transaction'), parent=self)
except Exception as e:
self.show_message(str(e))
def electrum_tx_to_txtype(self, tx, xpub_path):
t = TransactionType()
d = deserialize(tx.raw)
t.version = d['version']
t.lock_time = d['lockTime']
t.inputs = self.tx_inputs(tx, xpub_path)
t.bin_outputs = [
TxOutputBinType(amount=vout['value'],
script_pubkey=bfh(vout['scriptPubKey']))
for vout in d['outputs']
]
return t
def _make_multisig(self, m, xpubs, signatures=None):
if len(xpubs) == 1:
return None
pubkeys = [self._make_node_path(xpub, deriv) for xpub, deriv in xpubs]
if signatures is None:
signatures = [b''] * len(pubkeys)
elif len(signatures) != len(pubkeys):
raise RuntimeError('Mismatched number of signatures')
else:
signatures = [bfh(x)[:-1] if x else b'' for x in signatures]
return MultisigRedeemScriptType(pubkeys=pubkeys,
signatures=signatures,
m=m)
def electrum_tx_to_txtype(self, tx):
t = self.types.TransactionType()
if tx is None:
# probably for segwit input and we don't need this prev txn
return t
d = deserialize(tx.raw)
t.version = d['version']
t.lock_time = d['lockTime']
inputs = self.tx_inputs(tx)
t.inputs.extend(inputs)
for vout in d['outputs']:
o = t.bin_outputs.add()
o.amount = vout['value']
o.script_pubkey = bfh(vout['scriptPubKey'])
return t
def sign_transaction(self, keystore, tx, prev_tx, xpub_path):
prev_tx = {
bfh(txhash): self.electrum_tx_to_txtype(tx, xpub_path)
for txhash, tx in prev_tx.items()
}
client = self.get_client(keystore)
inputs = self.tx_inputs(tx, xpub_path, True)
outputs = self.tx_outputs(keystore.get_derivation(), tx, client)
details = SignTx(lock_time=tx.locktime)
signatures, signed_tx = client.sign_tx(self.get_coin_name(),
inputs,
outputs,
details=details,
prev_txes=prev_tx)
signatures = [bh2u(x) for x in signatures]
tx.update_signatures(signatures)
def tx_inputs(self, tx, xpub_path, for_sig=False):
inputs = []
for txin in tx.inputs():
txinputtype = TxInputType()
if txin['type'] == 'coinbase':
prev_hash = b"\0" * 32
prev_index = 0xffffffff # signed int -1
else:
if for_sig:
x_pubkeys = txin['x_pubkeys']
xpubs = [parse_xpubkey(x) for x in x_pubkeys]
multisig = self._make_multisig(txin.get('num_sig'), xpubs,
txin.get('signatures'))
script_type = self.get_trezor_input_script_type(
multisig is not None)
txinputtype = TxInputType(script_type=script_type,
multisig=multisig)
# find which key is mine
for xpub, deriv in xpubs:
if xpub in xpub_path:
xpub_n = parse_path(xpub_path[xpub])
txinputtype.address_n = xpub_n + deriv
break
prev_hash = unhexlify(txin['prevout_hash'])
prev_index = txin['prevout_n']
if 'value' in txin:
txinputtype.amount = txin['value']
txinputtype.prev_hash = prev_hash
txinputtype.prev_index = prev_index
if 'scriptSig' in txin:
script_sig = bfh(txin['scriptSig'])
txinputtype.script_sig = script_sig
txinputtype.sequence = txin.get('sequence', 0xffffffff - 1)
inputs.append(txinputtype)
return inputs
def do_send(self, d):
tx = d.tx
window, state = self._find_window_and_state_for_wallet(d.wallet)
if not tx or not window or not state:
self.print_error("Missing tx or window or state")
return
for xpub, K, _hash in state.cosigner_list:
if not self.cosigner_can_sign(tx, xpub):
continue
message = bitcoin.encrypt_message(bfh(tx.raw),
bh2u(K)).decode('ascii')
try:
state.server.put(_hash, message)
except Exception as e:
traceback.print_exc(file=sys.stdout)
window.show_error(
_("Failed to send transaction to cosigning pool."))
return
d.show_message(
_("Your transaction was sent to the cosigning pool.") + '\n' +
_("Open your cosigner wallet to retrieve it."))
def on_receive(self, window, keyhash, message):
self.print_error("signal arrived for", keyhash, "@",
window.diagnostic_name())
state = getattr(window, 'cosigner_pool_state', None)
if not state:
self.print_error("Error: state object not found")
return
keys = state.keys
for key, _hash in keys:
if _hash == keyhash:
break
else:
self.print_error("keyhash not found")
return
wallet = window.wallet
if isinstance(wallet.keystore, keystore.Hardware_KeyStore):
window.show_warning(
_('An encrypted transaction was retrieved from cosigning pool.'
) + '\n' +
_('However, hardware wallets do not support message decryption, '
'which makes them not compatible with the current design of cosigner pool.'
))
return
password = None
if wallet.has_password():
password = window.password_dialog(
_('An encrypted transaction was retrieved from cosigning pool.'
) + '\n' + _('Please enter your password to decrypt it.'))
if not password:
return
else:
details = (_(
"If you choose 'Yes', it will be decrypted and a transaction window will be shown, giving you the opportunity to sign the transaction."
) + "\n\n" + _(
"If you choose 'No', you will be asked again later (the next time this wallet window is opened)."
))
ret = window.msg_box(
icon=QMessageBox.Question,
parent=None,
title=_("Cosigner Pool"),
buttons=QMessageBox.Yes | QMessageBox.No,
text=
_("An encrypted transaction was retrieved from cosigning pool."
) + '\n' + _("Do you want to open it now?"),
detail_text=details)
if ret != QMessageBox.Yes:
return
err, badpass = "******", False
try:
xprv = wallet.keystore.get_master_private_key(password)
except InvalidPassword as e:
err, badpass = str(e), True
xprv = None
if not xprv:
window.show_error(err)
if badpass:
self.on_receive(window, keyhash, message) # try again
return
try:
k = bh2u(bitcoin.deserialize_xprv(xprv)[-1])
EC = bitcoin.EC_KEY(bfh(k))
message = bh2u(EC.decrypt_message(message))
except Exception as e:
traceback.print_exc(file=sys.stdout)
window.show_error(repr(e))
return
state.listener.clear(keyhash)
tx = transaction.Transaction(message)
show_transaction(tx, window, prompt_if_unsaved=True)
def sign_transaction(self, tx, password, *, use_cache=False):
if tx.is_complete():
return
client = self.get_client()
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
output = None
p2shTransaction = False
pin = ""
self.get_client(
) # prompt for the PIN before displaying the dialog if necessary
self.cashaddr_alert()
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for txin in tx.inputs():
if txin['type'] == 'coinbase':
self.give_error(
_('Coinbase not supported')) # should never happen
if txin['type'] in ['p2sh']:
p2shTransaction = True
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
for i, x_pubkey in enumerate(x_pubkeys):
if x_pubkey in derivations:
signingPos = i
s = derivations.get(x_pubkey)
hwAddress = "{:s}/{:d}/{:d}".format(
self.get_derivation()[2:], s[0], s[1])
break
else:
self.give_error(_('No matching x_key for sign_transaction')
) # should never happen
redeemScript = Transaction.get_preimage_script(txin)
inputs.append([
txin['prev_tx'].raw, txin['prevout_n'], redeemScript,
txin['prevout_hash'], signingPos,
txin.get('sequence', 0xffffffff - 1)
])
inputsPaths.append(hwAddress)
pubKeys.append(pubkeys)
# Sanity check
if p2shTransaction:
for txin in tx.inputs():
if txin['type'] != 'p2sh':
self.give_error(
_('P2SH / regular input mixed in same transaction not supported'
)) # should never happen
txOutput = var_int(len(tx.outputs()))
for txout in tx.outputs():
output_type, addr, amount = txout
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(addr)
txOutput += var_int(len(script) // 2)
txOutput += script
txOutput = bfh(txOutput)
# Recognize outputs
# - only one output and one change is authorized (for hw.1 and nano)
# - at most one output can bypass confirmation (~change) (for all)
if not p2shTransaction:
if not self.get_client_electrum().supports_multi_output():
if len(tx.outputs()) > 2:
self.give_error(
_('Transaction with more than 2 outputs not supported by {}'
).format(self.device))
has_change = False
any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
for o in tx.outputs():
_type, address, amount = o
if self.get_client_electrum().is_hw1():
if not _type == TYPE_ADDRESS:
self.give_error(
_('Only address outputs are supported by {}').
format(self.device))
else:
if not _type in [TYPE_ADDRESS, TYPE_SCRIPT]:
self.give_error(
_('Only address and script outputs are supported by {}'
).format(self.device))
if _type == TYPE_SCRIPT:
try:
# Ledger has a maximum output size of 200 bytes:
# https://github.com/LedgerHQ/ledger-app-btc/commit/3a78dee9c0484821df58975803e40d58fbfc2c38#diff-c61ccd96a6d8b54d48f54a3bc4dfa7e2R26
# which gives us a maximum OP_RETURN payload size of
# 187 bytes. It also apparently has no limit on
# max_pushes, so we specify max_pushes=None so as
# to bypass that check.
validate_op_return_output_and_get_data(
o, max_size=187, max_pushes=None)
except RuntimeError as e:
self.give_error('{}: {}'.format(
self.device, str(e)))
info = tx.output_info.get(address)
if (info is not None) and len(tx.outputs()) > 1 \
and not has_change:
index, xpubs, m, script_type = info
on_change_branch = index[0] == 1
# prioritise hiding outputs on the 'change' branch from user
# because no more than one change address allowed
if on_change_branch == any_output_on_change_branch:
changePath = self.get_derivation(
)[2:] + "/{:d}/{:d}".format(*index)
has_change = True
else:
output = address
else:
output = address
self.handler.show_message(
_('Confirm Transaction on your {}...').format(self.device))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
sequence = int_to_hex(utxo[5], 4)
if not self.get_client_electrum().requires_trusted_inputs():
txtmp = bitcoinTransaction(bfh(utxo[0]))
tmp = bfh(utxo[3])[::-1]
tmp += bfh(int_to_hex(utxo[1], 4))
tmp += txtmp.outputs[utxo[1]].amount
chipInputs.append({
'value': tmp,
'witness': True,
'sequence': sequence
})
redeemScripts.append(bfh(utxo[2]))
else:
txtmp = bitcoinTransaction(bfh(utxo[0]))
trustedInput = self.get_client().getTrustedInput(
txtmp, utxo[1])
trustedInput['sequence'] = sequence
trustedInput['witness'] = True
chipInputs.append(trustedInput)
if p2shTransaction:
redeemScripts.append(bfh(utxo[2]))
else:
redeemScripts.append(txtmp.outputs[utxo[1]].script)
# Sign all inputs
inputIndex = 0
self.get_client().enableAlternate2fa(False)
cashaddr = Address.FMT_UI == Address.FMT_CASHADDR
if cashaddr and self.get_client_electrum().supports_cashaddr():
self.get_client().startUntrustedTransaction(
True,
inputIndex,
chipInputs,
redeemScripts[inputIndex],
cashAddr=True)
else:
self.get_client().startUntrustedTransaction(
True, inputIndex, chipInputs, redeemScripts[inputIndex])
# we don't set meaningful outputAddress, amount and fees
# as we only care about the alternateEncoding==True branch
outputData = self.get_client().finalizeInput(
b'', 0, 0, changePath, bfh(tx.serialize(True)))
outputData['outputData'] = txOutput
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
outputData['address'] = output
self.handler.finished()
pin = self.handler.get_auth(
outputData) # does the authenticate dialog and returns pin
if not pin:
raise UserWarning()
self.handler.show_message(
_('Confirmed. Signing Transaction...'))
while inputIndex < len(inputs):
singleInput = [chipInputs[inputIndex]]
if cashaddr and self.get_client_electrum().supports_cashaddr():
self.get_client().startUntrustedTransaction(
False,
0,
singleInput,
redeemScripts[inputIndex],
cashAddr=True)
else:
self.get_client().startUntrustedTransaction(
False, 0, singleInput, redeemScripts[inputIndex])
inputSignature = self.get_client().untrustedHashSign(
inputsPaths[inputIndex],
pin,
lockTime=tx.locktime,
sighashType=0x41)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
except UserWarning:
self.handler.show_error(_('Cancelled by user'))
return
except BTChipException as e:
if e.sw in (0x6985, 0x6d00): # cancelled by user
return
elif e.sw == 0x6982:
raise # pin lock. decorator will catch it
else:
traceback.print_exc(file=sys.stderr)
self.give_error(e, True)
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.finished()
for i, txin in enumerate(tx.inputs()):
signingPos = inputs[i][4]
txin['signatures'][signingPos] = bh2u(signatures[i])
tx.raw = tx.serialize()
def sign_transaction(self, tx, password, *, use_cache=False):
self.print_error('sign_transaction(): tx: '+ str(tx)) #debugSatochip
client = self.get_client()
# outputs
txOutputs= ''.join(tx.serialize_output(o) for o in tx.outputs())
hashOutputs = bh2u(Hash(bfh(txOutputs)))
txOutputs = var_int(len(tx.outputs()))+txOutputs
self.print_error('sign_transaction(): hashOutputs= ', hashOutputs) #debugSatochip
self.print_error('sign_transaction(): outputs= ', txOutputs) #debugSatochip
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for i,txin in enumerate(tx.inputs()):
self.print_error('sign_transaction(): input =', i) #debugSatochip
self.print_error('sign_transaction(): input[type]:', txin['type']) #debugSatochip
if txin['type'] == 'coinbase':
self.give_error("Coinbase not supported") # should never happen
if txin['type'] in ['p2sh']:
p2shTransaction = True
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
for j, x_pubkey in enumerate(x_pubkeys):
self.print_error('sign_transaction(): forforloop: j=', j) #debugSatochip
if tx.is_txin_complete(txin):
break
if x_pubkey in derivations:
signingPos = j
s = derivations.get(x_pubkey)
address_path = "%s/%d/%d" % (self.get_derivation()[2:], s[0], s[1])
# get corresponing extended key
(depth, bytepath)= bip32path2bytes(address_path)
(key, chaincode)=client.cc.card_bip32_get_extendedkey(bytepath)
# parse tx
pre_tx_hex= tx.serialize_preimage(i)
pre_tx= bytes.fromhex(pre_tx_hex)# hex representation => converted to bytes
pre_hash = Hash(bfh(pre_tx_hex))
pre_hash_hex= pre_hash.hex()
self.print_error('sign_transaction(): pre_tx_hex=', pre_tx_hex) #debugSatochip
self.print_error('sign_transaction(): pre_hash=', pre_hash_hex) #debugSatochip
#(response, sw1, sw2) = client.cc.card_parse_transaction(pre_tx, True) # use 'True' since ERG use BIP143 as in Segwit...
#print_error('[satochip] sign_transaction(): response= '+str(response)) #debugSatochip
#(tx_hash, needs_2fa) = client.parser.parse_parse_transaction(response)
(response, sw1, sw2, tx_hash, needs_2fa) = client.cc.card_parse_transaction(pre_tx, True) # use 'True' since ERG use BIP143 as in Segwit...
tx_hash_hex= bytearray(tx_hash).hex()
if pre_hash_hex!= tx_hash_hex:
raise RuntimeError(f"[Satochip_KeyStore] Tx preimage mismatch: {pre_hash_hex} vs {tx_hash_hex}")
# sign tx
keynbr= 0xFF #for extended key
if needs_2fa:
# format & encrypt msg
import json
coin_type= 145 #see https://github.com/satoshilabs/slips/blob/master/slip-0044.md
test_net= networks.net.TESTNET
msg= {'action':"sign_tx", 'tx':pre_tx_hex, 'ct':coin_type, 'sw':True, 'tn':test_net, 'txo':txOutputs, 'ty':txin['type']}
msg= json.dumps(msg)
(id_2FA, msg_out)= client.cc.card_crypt_transaction_2FA(msg, True)
d={}
d['msg_encrypt']= msg_out
d['id_2FA']= id_2FA
# self.print_error("encrypted message: "+msg_out)
self.print_error("id_2FA:", id_2FA)
#do challenge-response with 2FA device...
client.handler.show_message('2FA request sent! Approve or reject request on your second device.')
Satochip2FA.do_challenge_response(d)
# decrypt and parse reply to extract challenge response
try:
reply_encrypt= None # init it in case of exc below
reply_encrypt= d['reply_encrypt']
except Exception as e:
# Note: give_error here will raise again.. :/
self.give_error("No response received from 2FA.\nPlease ensure that the Satochip-2FA plugin is enabled in Tools>Optional Features", True)
break
if reply_encrypt is None:
#todo: abort tx
break
reply_decrypt= client.cc.card_crypt_transaction_2FA(reply_encrypt, False)
self.print_error("challenge:response=", reply_decrypt)
reply_decrypt= reply_decrypt.split(":")
rep_pre_hash_hex= reply_decrypt[0][0:64]
if rep_pre_hash_hex!= pre_hash_hex:
#todo: abort tx or retry?
self.print_error("Abort transaction: tx mismatch:",rep_pre_hash_hex,"!=",pre_hash_hex)
break
chalresponse=reply_decrypt[1]
if chalresponse=="00"*20:
#todo: abort tx?
self.print_error("Abort transaction: rejected by 2FA!")
break
chalresponse= list(bytes.fromhex(chalresponse))
else:
chalresponse= None
(tx_sig, sw1, sw2) = client.cc.card_sign_transaction(keynbr, tx_hash, chalresponse)
#self.print_error('sign_transaction(): sig=', bytes(tx_sig).hex()) #debugSatochip
#todo: check sw1sw2 for error (0x9c0b if wrong challenge-response)
# enforce low-S signature (BIP 62)
tx_sig = bytearray(tx_sig)
r,s= get_r_and_s_from_der_sig(tx_sig)
if s > CURVE_ORDER//2:
s = CURVE_ORDER - s
tx_sig=der_sig_from_r_and_s(r, s)
#update tx with signature
tx_sig = tx_sig.hex()+'41'
#tx.add_signature_to_txin(i,j,tx_sig)
txin['signatures'][j] = tx_sig
break
else:
self.give_error("No matching x_key for sign_transaction") # should never happen
self.print_error("is_complete", tx.is_complete())
tx.raw = tx.serialize()
return
def tx_inputs(self, tx, for_sig=False):
inputs = []
for txin in tx.inputs():
txinputtype = self.types.TxInputType()
if txin['type'] == 'coinbase':
prev_hash = b"\x00" * 32
prev_index = 0xffffffff # signed int -1
else:
if for_sig:
x_pubkeys = txin['x_pubkeys']
if len(x_pubkeys) == 1:
x_pubkey = x_pubkeys[0]
xpub, s = parse_xpubkey(x_pubkey)
xpub_n = self.client_class.expand_path(
self.xpub_path[xpub])
txinputtype.address_n.extend(xpub_n + s)
txinputtype.script_type = self.get_keepkey_input_script_type(
txin['type'])
else:
def f(x_pubkey):
xpub, s = parse_xpubkey(x_pubkey)
return self._make_node_path(xpub, s)
pubkeys = list(map(f, x_pubkeys))
multisig = self.types.MultisigRedeemScriptType(
pubkeys=pubkeys,
signatures=map(lambda x: bfh(x)[:-1] if x else b'',
txin.get('signatures')),
m=txin.get('num_sig'),
)
script_type = self.get_keepkey_input_script_type(
txin['type'])
txinputtype = self.types.TxInputType(
script_type=script_type, multisig=multisig)
# find which key is mine
for x_pubkey in x_pubkeys:
if is_xpubkey(x_pubkey):
xpub, s = parse_xpubkey(x_pubkey)
if xpub in self.xpub_path:
xpub_n = self.client_class.expand_path(
self.xpub_path[xpub])
txinputtype.address_n.extend(xpub_n + s)
break
prev_hash = unhexlify(txin['prevout_hash'])
prev_index = txin['prevout_n']
if 'value' in txin:
txinputtype.amount = txin['value']
txinputtype.prev_hash = prev_hash
txinputtype.prev_index = prev_index
if txin.get('scriptSig') is not None:
script_sig = bfh(txin['scriptSig'])
txinputtype.script_sig = script_sig
txinputtype.sequence = txin.get('sequence', 0xffffffff - 1)
inputs.append(txinputtype)
return inputs