mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-22 23:48:12 +00:00
core: optimize memory usage in signing
This commit is contained in:
Jan Pochyla
Pavol Rusnak
parent
a6e51434f2
commit
c2f5174b43
@ -1,4 +1,4 @@
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from trezor import wire
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from trezor import utils, wire
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from trezor.messages.MessageType import TxAck
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from trezor.messages.RequestType import TXFINISHED
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from trezor.messages.TxRequest import TxRequest
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@ -38,19 +38,29 @@ async def sign_tx(ctx, msg, keychain):
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break
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res = await ctx.call(req, TxAck)
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elif isinstance(req, helpers.UiConfirmOutput):
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mods = utils.unimport_begin()
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res = await layout.confirm_output(ctx, req.output, req.coin)
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utils.unimport_end(mods)
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progress.report_init()
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elif isinstance(req, helpers.UiConfirmTotal):
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mods = utils.unimport_begin()
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res = await layout.confirm_total(ctx, req.spending, req.fee, req.coin)
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utils.unimport_end(mods)
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progress.report_init()
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elif isinstance(req, helpers.UiConfirmFeeOverThreshold):
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mods = utils.unimport_begin()
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res = await layout.confirm_feeoverthreshold(ctx, req.fee, req.coin)
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utils.unimport_end(mods)
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progress.report_init()
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elif isinstance(req, helpers.UiConfirmNonDefaultLocktime):
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mods = utils.unimport_begin()
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res = await layout.confirm_nondefault_locktime(ctx, req.lock_time)
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utils.unimport_end(mods)
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progress.report_init()
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elif isinstance(req, helpers.UiConfirmForeignAddress):
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mods = utils.unimport_begin()
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res = await paths.show_path_warning(ctx, req.address_n)
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utils.unimport_end(mods)
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progress.report_init()
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else:
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raise TypeError("Invalid signing instruction")
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@ -1,3 +1,5 @@
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import gc
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from trezor.messages import InputScriptType
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from trezor.messages.RequestType import (
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TXEXTRADATA,
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@ -85,6 +87,7 @@ def request_tx_meta(tx_req: TxRequest, tx_hash: bytes = None):
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tx_req.details.request_index = None
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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return sanitize_tx_meta(ack.tx)
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@ -100,6 +103,7 @@ def request_tx_extra_data(
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tx_req.serialized = None
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tx_req.details.extra_data_offset = None
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tx_req.details.extra_data_len = None
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gc.collect()
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return ack.tx.extra_data
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@ -109,6 +113,7 @@ def request_tx_input(tx_req: TxRequest, i: int, tx_hash: bytes = None):
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tx_req.details.tx_hash = tx_hash
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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return sanitize_tx_input(ack.tx)
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@ -118,6 +123,7 @@ def request_tx_output(tx_req: TxRequest, i: int, tx_hash: bytes = None):
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tx_req.details.tx_hash = tx_hash
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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if tx_hash is None:
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return sanitize_tx_output(ack.tx)
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else:
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@ -129,6 +135,7 @@ def request_tx_finish(tx_req: TxRequest):
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tx_req.details = None
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yield tx_req
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tx_req.serialized = None
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gc.collect()
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# Data sanitizers
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@ -3,12 +3,8 @@ from ubinascii import hexlify
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from trezor import ui
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from trezor.messages import ButtonRequestType, OutputScriptType
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from trezor.ui.text import Text
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from trezor.utils import chunks, format_amount
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from apps.common.confirm import confirm, hold_to_confirm
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from apps.wallet.sign_tx import addresses, omni
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_LOCKTIME_TIMESTAMP_MIN_VALUE = const(500000000)
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@ -25,6 +21,10 @@ def split_op_return(data):
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async def confirm_output(ctx, output, coin):
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from trezor.ui.text import Text
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from apps.common.confirm import confirm
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from apps.wallet.sign_tx import addresses, omni
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if output.script_type == OutputScriptType.PAYTOOPRETURN:
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data = output.op_return_data
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if omni.is_valid(data):
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@ -48,7 +48,10 @@ async def confirm_output(ctx, output, coin):
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async def confirm_total(ctx, spending, fee, coin):
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text = Text("Confirm transaction", ui.ICON_SEND, icon_color=ui.GREEN)
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from trezor.ui.text import Text
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from apps.common.confirm import hold_to_confirm
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text = Text("Confirm transaction", ui.ICON_SEND, ui.GREEN)
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text.normal("Total amount:")
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text.bold(format_coin_amount(spending, coin))
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text.normal("including fee:")
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@ -57,7 +60,10 @@ async def confirm_total(ctx, spending, fee, coin):
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async def confirm_feeoverthreshold(ctx, fee, coin):
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text = Text("High fee", ui.ICON_SEND, icon_color=ui.GREEN)
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from trezor.ui.text import Text
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from apps.common.confirm import confirm
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text = Text("High fee", ui.ICON_SEND, ui.GREEN)
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text.normal("The fee of")
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text.bold(format_coin_amount(fee, coin))
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text.normal("is unexpectedly high.", "Continue?")
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@ -65,13 +71,19 @@ async def confirm_feeoverthreshold(ctx, fee, coin):
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async def confirm_foreign_address(ctx, address_n, coin):
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text = Text("Confirm sending", ui.ICON_SEND, icon_color=ui.RED)
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from trezor.ui.text import Text
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from apps.common.confirm import confirm
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text = Text("Confirm sending", ui.ICON_SEND, ui.RED)
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text.normal("Trying to spend", "coins from another chain.", "Continue?")
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return await confirm(ctx, text, ButtonRequestType.SignTx)
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async def confirm_nondefault_locktime(ctx, lock_time):
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text = Text("Confirm locktime", ui.ICON_SEND, icon_color=ui.GREEN)
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from trezor.ui.text import Text
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from apps.common.confirm import confirm
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text = Text("Confirm locktime", ui.ICON_SEND, ui.GREEN)
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text.normal("Locktime for this transaction is set to")
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if lock_time < _LOCKTIME_TIMESTAMP_MIN_VALUE:
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text.normal("blockheight:")
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@ -171,7 +171,18 @@ def witness_p2wsh(
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# witness program + signatures + redeem script
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num_of_witness_items = 1 + len(signatures) + 1
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w = bytearray()
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# length of the redeem script
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pubkeys = multisig_get_pubkeys(multisig)
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redeem_script_length = output_script_multisig_length(pubkeys, multisig.m)
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# length of the result
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total_length = 1 + 1 # number of items, version
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for s in signatures:
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total_length += 1 + len(s) + 1 # length, signature, sighash
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total_length += 1 + redeem_script_length # length, script
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w = empty_bytearray(total_length)
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write_varint(w, num_of_witness_items)
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write_varint(w, 0) # version 0 witness program
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@ -179,10 +190,9 @@ def witness_p2wsh(
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append_signature(w, s, sighash) # size of the witness included
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# redeem script
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pubkeys = multisig_get_pubkeys(multisig)
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redeem_script = output_script_multisig(pubkeys, multisig.m)
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write_varint(w, len(redeem_script))
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write_bytes(w, redeem_script)
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write_varint(w, redeem_script_length)
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output_script_multisig(pubkeys, multisig.m, w)
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return w
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@ -198,13 +208,25 @@ def input_script_multisig(
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signature_index: int,
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sighash: int,
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coin: CoinInfo,
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):
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) -> bytearray:
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signatures = multisig.signatures # other signatures
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if len(signatures[signature_index]) > 0:
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raise ScriptsError("Invalid multisig parameters")
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signatures[signature_index] = signature # our signature
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w = bytearray()
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# length of the redeem script
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pubkeys = multisig_get_pubkeys(multisig)
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redeem_script_length = output_script_multisig_length(pubkeys, multisig.m)
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# length of the result
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total_length = 0
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if not coin.decred:
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total_length += 1 # OP_FALSE
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for s in signatures:
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total_length += 1 + len(s) + 1 # length, signature, sighash
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total_length += 1 + redeem_script_length # length, script
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w = empty_bytearray(total_length)
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if not coin.decred:
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# Starts with OP_FALSE because of an old OP_CHECKMULTISIG bug, which
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@ -217,15 +239,13 @@ def input_script_multisig(
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append_signature(w, s, sighash)
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# redeem script
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pubkeys = multisig_get_pubkeys(multisig)
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redeem_script = output_script_multisig(pubkeys, multisig.m)
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write_op_push(w, len(redeem_script))
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write_bytes(w, redeem_script)
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write_op_push(w, redeem_script_length)
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output_script_multisig(pubkeys, multisig.m, w)
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return w
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def output_script_multisig(pubkeys, m: int) -> bytearray:
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def output_script_multisig(pubkeys, m: int, w: bytearray = None) -> bytearray:
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n = len(pubkeys)
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if n < 1 or n > 15 or m < 1 or m > 15:
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raise ScriptsError("Invalid multisig parameters")
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@ -233,7 +253,8 @@ def output_script_multisig(pubkeys, m: int) -> bytearray:
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if len(pubkey) != 33:
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raise ScriptsError("Invalid multisig parameters")
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w = bytearray()
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if w is None:
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w = empty_bytearray(output_script_multisig_length(pubkeys, m))
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w.append(0x50 + m) # numbers 1 to 16 are pushed as 0x50 + value
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for p in pubkeys:
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append_pubkey(w, p)
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@ -242,6 +263,10 @@ def output_script_multisig(pubkeys, m: int) -> bytearray:
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return w
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def output_script_multisig_length(pubkeys, m: int) -> int:
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return 1 + len(pubkeys) * (1 + 33) + 1 + 1 # see output_script_multisig
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# OP_RETURN
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# ===
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@ -1,3 +1,4 @@
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import gc
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from micropython import const
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from trezor import utils
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@ -304,6 +305,7 @@ async def sign_tx(tx: SignTx, keychain: seed.Keychain):
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tx_ser.signature = signature
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# serialize input with correct signature
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gc.collect()
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txi_sign.script_sig = input_derive_script(
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coin, txi_sign, key_sign_pub, signature
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)
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@ -365,6 +367,7 @@ async def sign_tx(tx: SignTx, keychain: seed.Keychain):
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tx_ser.signature = signature
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# serialize input with correct signature
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gc.collect()
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txi_sign.script_sig = input_derive_script(
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coin, txi_sign, key_sign_pub, signature
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)
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@ -470,6 +473,7 @@ async def sign_tx(tx: SignTx, keychain: seed.Keychain):
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tx_ser.signature = signature
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# serialize input with correct signature
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gc.collect()
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txi_sign.script_sig = input_derive_script(
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coin, txi_sign, key_sign_pub, signature
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)
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@ -812,8 +816,9 @@ def input_derive_script(
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if i.multisig:
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# p2wsh in p2sh
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pubkeys = multisig.multisig_get_pubkeys(i.multisig)
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witness_script = scripts.output_script_multisig(pubkeys, i.multisig.m)
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witness_script_hash = sha256(witness_script).digest()
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witness_script_hasher = utils.HashWriter(sha256())
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scripts.output_script_multisig(pubkeys, i.multisig.m, witness_script_hasher)
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witness_script_hash = witness_script_hasher.get_digest()
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return scripts.input_script_p2wsh_in_p2sh(witness_script_hash)
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# p2wpkh in p2sh
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