def _migrate_from_version_01() -> None:
# Make the U2F counter public and writable even when storage is locked.
# U2F counter wasn't public, so we are intentionally not using storage.device module.
counter = common.get(common.APP_DEVICE, device.U2F_COUNTER)
if counter is not None:
device.set_u2f_counter(int.from_bytes(counter, "big"))
# Delete the old, non-public U2F_COUNTER.
common.delete(common.APP_DEVICE, device.U2F_COUNTER)
set_current_version()
def set_sd_salt_auth_key(auth_key: Optional[bytes]) -> None:
"""
The key used to check the authenticity of the SD card salt.
"""
if auth_key is not None:
if len(auth_key) != SD_SALT_AUTH_KEY_LEN_BYTES:
raise ValueError
return common.set(_NAMESPACE, _SD_SALT_AUTH_KEY, auth_key, public=True)
else:
return common.delete(_NAMESPACE, _SD_SALT_AUTH_KEY, public=True)
def set_backed_up() -> None:
common.delete(_NAMESPACE, _NEEDS_BACKUP)
def erase_resident_credential(index: int) -> bool:
if not (0 <= index < _MAX_RESIDENT_CREDENTIALS):
return False
common.delete(common.APP_WEBAUTHN, index + _RESIDENT_CREDENTIAL_START_KEY)
return True
def erase_resident_credentials() -> None:
for i in range(_MAX_RESIDENT_CREDENTIALS):
common.delete(common.APP_WEBAUTHN, i + _RESIDENT_CREDENTIAL_START_KEY)
def delete() -> None:
for index in range(0, slip39.MAX_SHARE_COUNT):
common.delete(common.APP_RECOVERY_SHARES, index)
def end_progress() -> None:
_require_progress()
common.delete(_NAMESPACE, _IN_PROGRESS)
common.delete(_NAMESPACE, _DRY_RUN)
common.delete(_NAMESPACE, _SLIP39_IDENTIFIER)
common.delete(_NAMESPACE, _SLIP39_THRESHOLD)
common.delete(_NAMESPACE, _REMAINING)
common.delete(_NAMESPACE, _SLIP39_ITERATION_EXPONENT)
common.delete(_NAMESPACE, _SLIP39_GROUP_COUNT)
recovery_shares.delete()