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trezor-firmware/src/apps/management/backup_device.py

30 lines
978 B
Python

from trezor import wire
from trezor.messages.FailureType import ProcessError
from trezor.messages.Success import Success
from apps.common import storage
from apps.management.reset_device import (check_mnemonic, show_mnemonic,
show_warning, show_wrong_entry)
async def backup_device(ctx, msg):
if not storage.is_initialized():
raise wire.FailureError(ProcessError, 'Device is not initialized')
if not storage.needs_backup():
raise wire.FailureError(ProcessError, 'Seed already backed up')
mnemonic = storage.get_mnemonic()
# warn user about mnemonic safety
await show_warning(ctx)
storage.set_backed_up()
while True:
# show mnemonic and require confirmation of a random word
await show_mnemonic(ctx, mnemonic)
if await check_mnemonic(ctx, mnemonic):
break
await show_wrong_entry(ctx)
return Success(message='Seed successfully backed up')