mirror of
https://github.com/trezor/trezor-firmware.git
synced 2025-07-09 08:08:09 +00:00
9fc5bb546b
Changes many fields to required -- as far as we were able to figure out, signing would fail if these fields aren't provided anyway, so this should not pose a compatibility problem. Co-authored-by: matejcik <ja@matejcik.cz>
76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
from typing import TYPE_CHECKING
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from trezor import wire
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from trezor.enums import InputScriptType
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from trezor.messages import HDNodeType, PublicKey
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from apps.common import coininfo, paths
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from apps.common.keychain import get_keychain
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if TYPE_CHECKING:
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from trezor.messages import GetPublicKey
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async def get_public_key(ctx: wire.Context, msg: GetPublicKey) -> PublicKey:
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coin_name = msg.coin_name or "Bitcoin"
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script_type = msg.script_type or InputScriptType.SPENDADDRESS
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coin = coininfo.by_name(coin_name)
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curve_name = msg.ecdsa_curve_name or coin.curve_name
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keychain = await get_keychain(ctx, curve_name, [paths.AlwaysMatchingSchema])
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node = keychain.derive(msg.address_n)
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if (
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script_type
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in (
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InputScriptType.SPENDADDRESS,
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InputScriptType.SPENDMULTISIG,
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InputScriptType.SPENDTAPROOT,
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)
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and coin.xpub_magic is not None
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):
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node_xpub = node.serialize_public(coin.xpub_magic)
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elif (
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coin.segwit
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and script_type == InputScriptType.SPENDP2SHWITNESS
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and (msg.ignore_xpub_magic or coin.xpub_magic_segwit_p2sh is not None)
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):
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assert coin.xpub_magic_segwit_p2sh is not None
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node_xpub = node.serialize_public(
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coin.xpub_magic if msg.ignore_xpub_magic else coin.xpub_magic_segwit_p2sh
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)
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elif (
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coin.segwit
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and script_type == InputScriptType.SPENDWITNESS
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and (msg.ignore_xpub_magic or coin.xpub_magic_segwit_native is not None)
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):
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assert coin.xpub_magic_segwit_native is not None
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node_xpub = node.serialize_public(
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coin.xpub_magic if msg.ignore_xpub_magic else coin.xpub_magic_segwit_native
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)
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else:
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raise wire.DataError("Invalid combination of coin and script_type")
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pubkey = node.public_key()
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if pubkey[0] == 1:
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pubkey = b"\x00" + pubkey[1:]
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node_type = HDNodeType(
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depth=node.depth(),
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child_num=node.child_num(),
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fingerprint=node.fingerprint(),
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chain_code=node.chain_code(),
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public_key=pubkey,
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)
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if msg.show_display:
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from trezor.ui.layouts import show_xpub
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await show_xpub(ctx, node_xpub, "XPUB", "Cancel")
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return PublicKey(
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node=node_type,
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xpub=node_xpub,
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root_fingerprint=keychain.root_fingerprint(),
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)
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