def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
p2shTransaction = False
pin = ""
self.get_client(
) # prompt for the PIN before displaying the dialog if necessary
# 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" % (self.get_derivation()[2:], s[0], s[1])
hwAddress = "%s" % (self.get_derivation()[2:])
# Jackhammer Fix
for idx in s:
hwAddress += "/%d" % (idx)
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
if not p2shTransaction:
for _type, address, amount in tx.outputs():
assert _type == TYPE_ADDRESS
info = tx.output_info.get(address)
if (info is not None) and (len(tx.outputs()) != 1):
index, xpubs, m = info
changePath = self.get_derivation()[2:] + "/%d/%d" % index
changeAmount = amount
else:
output = address
outputAmount = amount
self.handler.show_message(
_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
sequence = int_to_hex(utxo[5], 4)
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]))
# Sign all inputs
inputIndex = 0
rawTx = tx.serialize()
self.get_client().enableAlternate2fa(False)
self.get_client().startUntrustedTransaction(
True, inputIndex, chipInputs, redeemScripts[inputIndex])
outputData = self.get_client().finalizeInputFull(txOutput)
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()
if pin != 'paired':
self.handler.show_message(
_("Confirmed. Signing Transaction..."))
while inputIndex < len(inputs):
singleInput = [chipInputs[inputIndex]]
self.get_client().startUntrustedTransaction(
False, 0, singleInput, redeemScripts[inputIndex])
inputSignature = self.get_client().untrustedHashSign(
inputsPaths[inputIndex],
pin,
lockTime=tx.locktime,
sighashType=tx.nHashType())
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 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()
self.signing = False
def sign_transaction(self, tx, password):
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 BCH use BIP143 as in Segwit...
#print_error('[satochip] sign_transaction(): response= '+str(response)) #debugSatochip
(tx_hash, needs_2fa
) = client.parser.parse_parse_transaction(response)
# tx_hash should be equal to pre_hash_hex
self.print_error('sign_transaction(): tx_hash=',
bytes(tx_hash).hex()) #debugSatochip
#todo: assert()
# 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.'
)
run_hook('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 sign_transaction(self, tx, password):
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")
has_change = False
any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
for _type, address, amount in tx.outputs():
if self.get_client_electrum().is_hw1():
if not _type == TYPE_ADDRESS:
self.give_error(_("Only address outputs are supported by {}").format(self.hw_type))
else:
if not _type in [TYPE_ADDRESS, TYPE_SCRIPT]:
self.give_error(_("Only address and script outputs are supported by {}").format(self.hw_type))
if _type == TYPE_SCRIPT and not address.script[0] == OpCodes.OP_RETURN:
self.give_error(_("Only OP_RETURN script outputs are supported by {}").format(self.hw_type))
info = tx.output_info.get(address)
if (info is not None) and len(tx.outputs()) > 1 \
and not has_change:
index, xpubs, m = 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 Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
sequence = int_to_hex(utxo[5], 4)
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]))
# 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=tx.nHashType())
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):
if tx.is_complete():
return
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
changePath = ""
output = None
p2shTransaction = False
pin = ""
# prompt for the PIN before displaying the dialog if necessary
client_ledger = self.get_client()
client_electrum = self.get_client_electrum()
assert client_electrum
# 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)
if not 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))
for o in tx.outputs():
_type, address, amount = o
if 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)))
# - 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 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 _type, address, amount in tx.outputs():
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
try:
# Get trusted inputs from the original transactions
for input_idx, utxo in enumerate(inputs):
self.handler.show_message(
_("Preparing transaction inputs...") +
f" (phase1, {input_idx}/{len(inputs)})")
sequence = int_to_hex(utxo[5], 4)
if not 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 = client_ledger.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)
self.handler.show_message(
_("Confirm Transaction on your Ledger device..."))
# Sign all inputs
inputIndex = 0
client_ledger.enableAlternate2fa(False)
cashaddr = Address.FMT_UI == Address.FMT_CASHADDR_BCH
if cashaddr and client_electrum.supports_cashaddr():
client_ledger.startUntrustedTransaction(
True,
inputIndex,
chipInputs,
redeemScripts[inputIndex],
cashAddr=True)
else:
client_ledger.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 = client_ledger.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):
self.handler.show_message(
_("Signing transaction...") +
f" (phase2, {inputIndex}/{len(inputs)})")
singleInput = [chipInputs[inputIndex]]
if cashaddr and client_electrum.supports_cashaddr():
client_ledger.startUntrustedTransaction(
False,
0,
singleInput,
redeemScripts[inputIndex],
cashAddr=True)
else:
client_ledger.startUntrustedTransaction(
False, 0, singleInput, redeemScripts[inputIndex])
inputSignature = client_ledger.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 msg_magic(message: bytes) -> bytes:
from electroncash.bitcoin import var_int
length = bfh(var_int(len(message)))
return b"\x18Bitcoin Signed Message:\n" + length + message
