async def restore_from_dict(vals):
# Restore from a dict of values. Already JSON decoded.
# Reboot on success, return string on failure
from main import pa, dis, settings
from pincodes import AE_SECRET_LEN
#print("Restoring from: %r" % vals)
# step1: the private key
# - prefer raw_secret over other values
# - TODO: fail back to other values
try:
chain = chains.get_chain(vals.get('chain', 'BTC'))
assert 'raw_secret' in vals
raw = bytearray(AE_SECRET_LEN)
rs = vals.pop('raw_secret')
if len(rs) % 2:
rs += '0'
x = a2b_hex(rs)
raw[0:len(x)] = x
# check we can decode this right (might be different firmare)
opmode, bits, node = stash.SecretStash.decode(raw)
assert node
# verify against xprv value (if we have it)
if 'xprv' in vals:
check_xprv = chain.serialize_private(node)
assert check_xprv == vals['xprv'], 'xprv mismatch'
except Exception as e:
return ('Unable to decode raw_secret and '
'restore the seed value!\n\n\n' + str(e))
ls = None
if ('long_secret' in vals) and version.has_608:
try:
ls = a2b_hex(vals.pop('long_secret'))
except Exception as exc:
sys.print_exception(exc)
# but keep going.
dis.fullscreen("Saving...")
dis.progress_bar_show(.25)
# clear (in-memory) settings and change also nvram key
# - also captures xfp, xpub at this point
pa.change(new_secret=raw)
# force the right chain
pa.new_main_secret(raw, chain) # updates xfp/xpub
# NOTE: don't fail after this point... they can muddle thru w/ just right seed
if ls is not None:
try:
pa.ls_change(ls)
except Exception as exc:
sys.print_exception(exc)
# but keep going
# restore settings from backup file
for idx, k in enumerate(vals):
dis.progress_bar_show(idx / len(vals))
if not k.startswith('setting.'):
continue
if k == 'xfp' or k == 'xpub': continue
settings.set(k[8:], vals[k])
# write out
settings.save()
if version.has_fatram and ('hsm_policy' in vals):
import hsm
hsm.restore_backup(vals['hsm_policy'])
await ux_show_story(
'Everything has been successfully restored. '
'We must now reboot to install the '
'updated settings and/or seed.',
title='Success!')
from machine import reset
reset()
def chain(self):
return chains.get_chain(self.chain_type)
