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pySim.ota: Add construct definition for SIM File + TK Param definition

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Change-Id: Ie5aa2babaf66af49eb5223e5e9d4451089baf055
This commit is contained in:
Harald Welte
2024-07-19 18:04:26 +02:00
parent f26042f92d
commit 4f2a6ebf1f
1 changed files with 13 additions and 2 deletions
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15
pySim/ota.py
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@@ -1,6 +1,6 @@
"""Code related to SIM/UICC OTA according to TS 102 225 + TS 31.115."""
# (C) 2021-2023 by Harald Welte <laforge@osmocom.org>
# (C) 2021-2024 by Harald Welte <laforge@osmocom.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@ import abc
import struct
from typing import Optional, Tuple
from construct import Enum, Int8ub, Int16ub, Struct, Bytes, GreedyBytes, BitsInteger, BitStruct
from construct import Flag, Padding, Switch, this
from construct import Flag, Padding, Switch, this, PrefixedArray, GreedyRange
from pySim.construct import *
from pySim.utils import b2h
@@ -99,6 +99,17 @@ SmsCommandPacket = Struct('cmd_pkt_len'/Int16ub,
'tar'/Bytes(3),
'secured_data'/GreedyBytes)
# TS 102 226 Section 8.2.1.3.2.1
SimFileAccessAndToolkitAppSpecParams = Struct('access_domain'/Prefixed(Int8ub, GreedyBytes),
'prio_level_of_tk_app_inst'/Int8ub,
'max_num_of_timers'/Int8ub,
'max_text_length_for_menu_entry'/Int8ub,
'menu_entries'/PrefixedArray(Int8ub, Struct('id'/Int8ub,
'pos'/Int8ub)),
'max_num_of_channels'/Int8ub,
'msl'/Prefixed(Int8ub, GreedyBytes),
'tar_values'/Prefixed(Int8ub, GreedyRange(Bytes(3))))
class OtaKeyset:
"""The OTA related data (key material, counter) to be used in encrypt/decrypt."""
def __init__(self, algo_crypt: str, kic_idx: int, kic: bytes,