# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild from pkg_resources import parse_version from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO import collections from enum import Enum if parse_version(ks_version) < parse_version('0.7'): raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) class Luks(KaitaiStruct): """Linux Unified Key Setup (LUKS) is a format specification for storing disk encryption parameters and up to 8 user keys (which can unlock the master key). .. seealso:: Source - https://gitlab.com/cryptsetup/cryptsetup/wikis/LUKS-standard/on-disk-format.pdf """ SEQ_FIELDS = ["partition_header"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['partition_header']['start'] = self._io.pos() self.partition_header = self._root.PartitionHeader(self._io, self, self._root) self.partition_header._read() self._debug['partition_header']['end'] = self._io.pos() class PartitionHeader(KaitaiStruct): SEQ_FIELDS = ["magic", "version", "cipher_name_specification", "cipher_mode_specification", "hash_specification", "payload_offset", "number_of_key_bytes", "master_key_checksum", "master_key_salt_parameter", "master_key_iterations_parameter", "uuid", "key_slots"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['magic']['start'] = self._io.pos() self.magic = self._io.ensure_fixed_contents(b"\x4C\x55\x4B\x53\xBA\xBE") self._debug['magic']['end'] = self._io.pos() self._debug['version']['start'] = self._io.pos() self.version = self._io.ensure_fixed_contents(b"\x00\x01") self._debug['version']['end'] = self._io.pos() self._debug['cipher_name_specification']['start'] = self._io.pos() self.cipher_name_specification = (self._io.read_bytes(32)).decode(u"ASCII") self._debug['cipher_name_specification']['end'] = self._io.pos() self._debug['cipher_mode_specification']['start'] = self._io.pos() self.cipher_mode_specification = (self._io.read_bytes(32)).decode(u"ASCII") self._debug['cipher_mode_specification']['end'] = self._io.pos() self._debug['hash_specification']['start'] = self._io.pos() self.hash_specification = (self._io.read_bytes(32)).decode(u"ASCII") self._debug['hash_specification']['end'] = self._io.pos() self._debug['payload_offset']['start'] = self._io.pos() self.payload_offset = self._io.read_u4be() self._debug['payload_offset']['end'] = self._io.pos() self._debug['number_of_key_bytes']['start'] = self._io.pos() self.number_of_key_bytes = self._io.read_u4be() self._debug['number_of_key_bytes']['end'] = self._io.pos() self._debug['master_key_checksum']['start'] = self._io.pos() self.master_key_checksum = self._io.read_bytes(20) self._debug['master_key_checksum']['end'] = self._io.pos() self._debug['master_key_salt_parameter']['start'] = self._io.pos() self.master_key_salt_parameter = self._io.read_bytes(32) self._debug['master_key_salt_parameter']['end'] = self._io.pos() self._debug['master_key_iterations_parameter']['start'] = self._io.pos() self.master_key_iterations_parameter = self._io.read_u4be() self._debug['master_key_iterations_parameter']['end'] = self._io.pos() self._debug['uuid']['start'] = self._io.pos() self.uuid = (self._io.read_bytes(40)).decode(u"ASCII") self._debug['uuid']['end'] = self._io.pos() self._debug['key_slots']['start'] = self._io.pos() self.key_slots = [None] * (8) for i in range(8): if not 'arr' in self._debug['key_slots']: self._debug['key_slots']['arr'] = [] self._debug['key_slots']['arr'].append({'start': self._io.pos()}) _t_key_slots = self._root.PartitionHeader.KeySlot(self._io, self, self._root) _t_key_slots._read() self.key_slots[i] = _t_key_slots self._debug['key_slots']['arr'][i]['end'] = self._io.pos() self._debug['key_slots']['end'] = self._io.pos() class KeySlot(KaitaiStruct): class KeySlotStates(Enum): disabled_key_slot = 57005 enabled_key_slot = 11301363 SEQ_FIELDS = ["state_of_key_slot", "iteration_parameter", "salt_parameter", "start_sector_of_key_material", "number_of_anti_forensic_stripes"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['state_of_key_slot']['start'] = self._io.pos() self.state_of_key_slot = KaitaiStream.resolve_enum(self._root.PartitionHeader.KeySlot.KeySlotStates, self._io.read_u4be()) self._debug['state_of_key_slot']['end'] = self._io.pos() self._debug['iteration_parameter']['start'] = self._io.pos() self.iteration_parameter = self._io.read_u4be() self._debug['iteration_parameter']['end'] = self._io.pos() self._debug['salt_parameter']['start'] = self._io.pos() self.salt_parameter = self._io.read_bytes(32) self._debug['salt_parameter']['end'] = self._io.pos() self._debug['start_sector_of_key_material']['start'] = self._io.pos() self.start_sector_of_key_material = self._io.read_u4be() self._debug['start_sector_of_key_material']['end'] = self._io.pos() self._debug['number_of_anti_forensic_stripes']['start'] = self._io.pos() self.number_of_anti_forensic_stripes = self._io.read_u4be() self._debug['number_of_anti_forensic_stripes']['end'] = self._io.pos() @property def key_material(self): if hasattr(self, '_m_key_material'): return self._m_key_material if hasattr(self, '_m_key_material') else None _pos = self._io.pos() self._io.seek((self.start_sector_of_key_material * 512)) self._debug['_m_key_material']['start'] = self._io.pos() self._m_key_material = self._io.read_bytes((self._parent.number_of_key_bytes * self.number_of_anti_forensic_stripes)) self._debug['_m_key_material']['end'] = self._io.pos() self._io.seek(_pos) return self._m_key_material if hasattr(self, '_m_key_material') else None @property def payload(self): if hasattr(self, '_m_payload'): return self._m_payload if hasattr(self, '_m_payload') else None _pos = self._io.pos() self._io.seek((self.partition_header.payload_offset * 512)) self._debug['_m_payload']['start'] = self._io.pos() self._m_payload = self._io.read_bytes_full() self._debug['_m_payload']['end'] = self._io.pos() self._io.seek(_pos) return self._m_payload if hasattr(self, '_m_payload') else None