mirror of
https://github.com/trezor/trezor-firmware.git
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46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
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from trezor import wire, ui
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from trezor.utils import unimport
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@unimport
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async def layout_verify_message(msg, session_id):
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from trezor.messages.Success import Success
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from trezor.crypto.curve import secp256k1
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from trezor.crypto.hashlib import ripemd160, sha256
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from trezor.crypto import base58
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from ..common import address_type
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from ..common import coins
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from ..common.signtx import node_derive, HashWriter, write_varint
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address = msg.address
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message = msg.message
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signature = msg.signature
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coin_name = getattr(msg, 'coin_name', 'Bitcoin')
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coin = coins.by_name(coin_name)
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ui.display.clear()
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ui.display.text(10, 30, 'Verifying message',
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ui.BOLD, ui.LIGHT_GREEN, ui.BLACK)
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ui.display.text(10, 60, message, ui.MONO, ui.WHITE, ui.BLACK)
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ui.display.text(10, 80, address, ui.MONO, ui.WHITE, ui.BLACK)
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h = HashWriter(sha256)
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write_varint(h, len(coin.signed_message_header))
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h.extend(coin.signed_message_header)
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write_varint(h, len(message))
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h.extend(message)
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digest = sha256(h.getvalue()).digest()
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pubkey = secp256k1.verify_recover(signature, digest)
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if not pubkey:
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raise ValueError('Invalid signature')
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raw_address = base58.decode_check(address)
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at, pkh = address_type.split(coin, raw_address)
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pkh2 = ripemd160(sha256(pubkey).digest()).digest()
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if pkh != pkh2:
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raise ValueError('Invalid signature')
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return Success(message='Message verified')
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