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pysim/tests/unittests/test_ota.py
T
Eric Wild 6076e4e6ff ota: indefinite length en/decoding support 
Adds TS 102 226 tables 5.2a/5.10a indefinite length coding,
recommended by TS 102 226 5.2.1 for RAM/RFM over HTTPS.

Noteworthy notable things to note:
- encode_expanded_cmd()
  indefinite version -> inner C-APDU TLVs are still definite
- decode_expanded_resp()s returned container does not care, but
  Indef has no 'number of executed commands' TLV -> number_of_commands
  is the R-APDU count.

Tests are being fed with some known-good values from my sja5 sessions.

Change-Id: I4e023112e98729489ed443eec3ed5ab45c773b17
2026-09-23 18:01:16 +02:00

592 lines
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#!/usr/bin/env python3
import unittest
from osmocom.utils import h2b, b2h
from pySim.sms import SMS_SUBMIT, SMS_DELIVER, AddressField
from pySim.ota import *
# pre-defined SPI values for use in test cases below
SPI_CC_POR_CIPHERED_CC = {
'counter':'no_counter',
'ciphering':True,
'rc_cc_ds': 'cc',
'por_in_submit':False,
'por_shall_be_ciphered':True,
'por_rc_cc_ds': 'cc',
'por': 'por_required'
}
SPI_CC_POR_UNCIPHERED_CC = {
'counter':'no_counter',
'ciphering':True,
'rc_cc_ds': 'cc',
'por_in_submit':False,
'por_shall_be_ciphered':False,
'por_rc_cc_ds': 'cc',
'por': 'por_required'
}
SPI_CC_POR_UNCIPHERED_NOCC = {
'counter':'no_counter',
'ciphering':True,
'rc_cc_ds': 'cc',
'por_in_submit':False,
'por_shall_be_ciphered':False,
'por_rc_cc_ds': 'no_rc_cc_ds',
'por': 'por_required'
}
######################################################################
# old-style code-driven test (lots of code copy+paste)
######################################################################
class Test_SMS_AES128(unittest.TestCase):
tar = h2b('B00011')
"""Test the OtaDialectSms for AES128 algorithms."""
def __init__(self, foo, **kwargs):
super().__init__(foo, **kwargs)
self.od = OtaKeyset(algo_crypt='aes_cbc', kic_idx=2,
algo_auth='aes_cmac', kid_idx=2,
kic=h2b('200102030405060708090a0b0c0d0e0f'),
kid=h2b('201102030405060708090a0b0c0d0e0f'))
self.dialect = OtaDialectSms()
self.spi_base = SPI_CC_POR_CIPHERED_CC
def _check_response(self, r, d):
self.assertEqual(d['number_of_commands'], 1)
self.assertEqual(d['last_status_word'], '6132')
self.assertEqual(d['last_response_data'], u'')
self.assertEqual(r['response_status'], 'por_ok')
def test_resp_aes128_ciphered(self):
spi = self.spi_base
r, d = self.dialect.decode_resp(self.od, spi, '027100002412b00011ebc6b497e2cad7aedf36ace0e3a29b38853f0fe9ccde81913be5702b73abce1f')
self._check_response(r, d)
def test_cmd_aes128_ciphered(self):
spi = self.spi_base
apdu = h2b('00a40004023f00')
r = self.dialect.encode_cmd(self.od, self.tar, spi, apdu)
self.assertEqual(b2h(r), '00281506192222b00011e87cceebb2d93083011ce294f93fc4d8de80da1abae8c37ca3e72ec4432e5058')
# also test decoder
dec_tar, dec_spi, dec_apdu = self.dialect.decode_cmd(self.od, r)
self.assertEqual(b2h(apdu), b2h(dec_apdu))
self.assertEqual(b2h(dec_tar), b2h(self.tar))
self.assertEqual(dec_spi, spi)
class Test_SMS_3DES(unittest.TestCase):
tar = h2b('b00000')
apdu = h2b('00a40000023f00')
"""Test the OtaDialectSms for 3DES algorithms."""
def __init__(self, foo, **kwargs):
super().__init__(foo, **kwargs)
# KIC1 + KID1 of 8988211000000467285
KIC1 = h2b('D0FDA31990D8D64178601317191669B4')
KID1 = h2b('D24EB461799C5E035C77451FD9404463')
KIC3 = h2b('C21DD66ACAC13CB3BC8B331B24AFB57B')
KID3 = h2b('12110C78E678C25408233076AA033615')
self.od = OtaKeyset(algo_crypt='triple_des_cbc2', kic_idx=3, kic=KIC3,
algo_auth='triple_des_cbc2', kid_idx=3, kid=KID3)
self.dialect = OtaDialectSms()
self.spi_base = {
'counter':'no_counter',
'ciphering': True,
'rc_cc_ds': 'cc',
'por_in_submit':False,
'por': 'por_required',
'por_shall_be_ciphered': True,
'por_rc_cc_ds': 'cc',
}
def _check_response(self, r, d):
self.assertEqual(d['number_of_commands'], 1)
self.assertEqual(d['last_status_word'], '612f')
self.assertEqual(d['last_response_data'], u'')
self.assertEqual(r['response_status'], 'por_ok')
def test_resp_3des_ciphered(self):
spi = self.spi_base
spi['por_shall_be_ciphered'] = True
spi['por_rc_cc_ds'] = 'cc'
r, d = self.dialect.decode_resp(self.od, spi, '027100001c12b000119660ebdb81be189b5e4389e9e7ab2bc0954f963ad869ed7c')
self._check_response(r, d)
def test_resp_3des_signed(self):
spi = self.spi_base
spi['por_shall_be_ciphered'] = False
spi['por_rc_cc_ds'] = 'cc'
r, d = self.dialect.decode_resp(self.od, spi, '027100001612b000110000000000000055f47118381175fb01612f')
self._check_response(r, d)
def test_resp_3des_signed_err(self):
"""Expect an OtaCheckError exception if the computed CC != received CC"""
spi = self.spi_base
spi['por_shall_be_ciphered'] = False
spi['por_rc_cc_ds'] = 'cc'
with self.assertRaises(OtaCheckError) as context:
r, d = self.dialect.decode_resp(self.od, spi, '027100001612b000110000000000000055f47118381175fb02612f')
self.assertTrue('!= Computed CC' in str(context.exception))
def test_resp_3des_none(self):
spi = self.spi_base
spi['por_shall_be_ciphered'] = False
spi['por_rc_cc_ds'] = 'no_rc_cc_ds'
r, d = self.dialect.decode_resp(self.od, spi, '027100000e0ab000110000000000000001612f')
self._check_response(r, d)
def test_cmd_3des_ciphered(self):
spi = self.spi_base
spi['ciphering'] = True
spi['rc_cc_ds'] = 'no_rc_cc_ds'
r = self.dialect.encode_cmd(self.od, self.tar, spi, self.apdu)
self.assertEqual(b2h(r), '00180d04193535b00000e3ec80a849b554421276af3883927c20')
# also test decoder
dec_tar, dec_spi, dec_apdu = self.dialect.decode_cmd(self.od, r)
self.assertEqual(b2h(self.apdu), b2h(dec_apdu))
self.assertEqual(b2h(dec_tar), b2h(self.tar))
self.assertEqual(dec_spi, spi)
def test_cmd_3des_signed(self):
spi = self.spi_base
spi['ciphering'] = False
spi['rc_cc_ds'] = 'cc'
r = self.dialect.encode_cmd(self.od, self.tar, spi, self.apdu)
self.assertEqual(b2h(r), '1502193535b00000000000000000072ea17bdb72060e00a40000023f00')
def test_cmd_3des_none(self):
spi = self.spi_base
spi['ciphering'] = False
spi['rc_cc_ds'] = 'no_rc_cc_ds'
r = self.dialect.encode_cmd(self.od, self.tar, spi, self.apdu)
self.assertEqual(b2h(r), '0d00193535b0000000000000000000a40000023f00')
######################################################################
# new-style data-driven tests
######################################################################
# SJA5 SAMPLE cards provisioned by execute_ipr.py
OTA_KEYSET_SJA5_SAMPLES = OtaKeyset(algo_crypt='triple_des_cbc2', kic_idx=3,
algo_auth='triple_des_cbc2', kid_idx=3,
kic=h2b('300102030405060708090a0b0c0d0e0f'),
kid=h2b('301102030405060708090a0b0c0d0e0f'))
OTA_KEYSET_SJA5_AES128 = OtaKeyset(algo_crypt='aes_cbc', kic_idx=2,
algo_auth='aes_cmac', kid_idx=2,
kic=h2b('200102030405060708090a0b0c0d0e0f'),
kid=h2b('201102030405060708090a0b0c0d0e0f'))
class OtaTestCase(unittest.TestCase):
def __init__(self, methodName='runTest', **kwargs):
super().__init__(methodName, **kwargs)
# RAM: B00000
# SIM RFM: B00010
# USIM RFM: B00011
self.tar = h2b('B00011')
class SmsOtaTestCase(OtaTestCase):
# Array describing the input/output data for the tests. We use the
# unittest subTests context manager to iterate over the entries of
# this testdatasets list. This is much more productive than
# manually writing one class per test.
testdatasets = [
{
'name': '3DES-SJA5-CIPHERED-CC',
'ota_keyset': OTA_KEYSET_SJA5_SAMPLES,
'spi': SPI_CC_POR_CIPHERED_CC,
'request': {
'apdu': b'\x00\xa4\x00\x04\x02\x3f\x00',
'encoded_cmd': '00201506193535b00011ae733256918d050b87c94fbfe12e4dc402f262c41cf67f2f',
'encoded_tpdu': '400881214365877ff6227052000000000302700000201506193535b00011ae733256918d050b87c94fbfe12e4dc402f262c41cf67f2f',
},
'response': {
'encoded_resp': '027100001c12b000118bb989492c632529326a2f4681feb37c825bc9021c9f6d0b',
'response_status': 'por_ok',
'number_of_commands': 1,
'last_status_word': '6132',
'last_response_data': '',
}
}, {
'name': '3DES-SJA5-UNCIPHERED-CC',
'ota_keyset': OTA_KEYSET_SJA5_SAMPLES,
'spi': SPI_CC_POR_UNCIPHERED_CC,
'request': {
'apdu': b'\x00\xa4\x00\x04\x02\x3f\x00',
'encoded_cmd': '00201506093535b00011c49ac91ab8159ba5b83a54fb6385e0a5e31694f8b215fafc',
'encoded_tpdu': '400881214365877ff6227052000000000302700000201506093535b00011c49ac91ab8159ba5b83a54fb6385e0a5e31694f8b215fafc',
},
'response': {
'encoded_resp': '027100001612b0001100000000000000b5bcd6353a421fae016132',
'response_status': 'por_ok',
'number_of_commands': 1,
'last_status_word': '6132',
'last_response_data': '',
}
}, {
'name': '3DES-SJA5-UNCIPHERED-NOCC',
'ota_keyset': OTA_KEYSET_SJA5_SAMPLES,
'spi': SPI_CC_POR_UNCIPHERED_NOCC,
'request': {
'apdu': b'\x00\xa4\x00\x04\x02\x3f\x00',
'encoded_cmd': '00201506013535b000113190be334900f52b025f3f7eddfe868e96ebf310023b7769',
'encoded_tpdu': '400881214365877ff6227052000000000302700000201506013535b000113190be334900f52b025f3f7eddfe868e96ebf310023b7769',
},
'response': {
'encoded_resp': '027100000e0ab0001100000000000000016132',
'response_status': 'por_ok',
'number_of_commands': 1,
'last_status_word': '6132',
'last_response_data': '',
}
}, {
'name': 'AES128-SJA5-CIPHERED-CC',
'ota_keyset': OTA_KEYSET_SJA5_AES128,
'spi': SPI_CC_POR_CIPHERED_CC,
'request': {
'apdu': b'\x00\xa4\x00\x04\x02\x3f\x00',
'encoded_cmd': '00281506192222b00011e87cceebb2d93083011ce294f93fc4d8de80da1abae8c37ca3e72ec4432e5058',
'encoded_tpdu': '400881214365877ff6227052000000000302700000281506192222b00011e87cceebb2d93083011ce294f93fc4d8de80da1abae8c37ca3e72ec4432e5058',
},
'response': {
'encoded_resp': '027100002412b00011ebc6b497e2cad7aedf36ace0e3a29b38853f0fe9ccde81913be5702b73abce1f',
'response_status': 'por_ok',
'number_of_commands': 1,
'last_status_word': '6132',
'last_response_data': '',
}
},
# TODO: AES192
# TODO: AES256
]
def __init__(self, methodName='runTest', **kwargs):
super().__init__(methodName, **kwargs)
self.dialect = OtaDialectSms()
self.da = AddressField('12345678', 'unknown', 'isdn_e164')
def test_encode_cmd(self):
for t in SmsOtaTestCase.testdatasets:
with self.subTest(name=t['name']):
kset = t['ota_keyset']
outp = self.dialect.encode_cmd(kset, self.tar, t['spi'], apdu=t['request']['apdu'])
#print("result: %s" % b2h(outp))
self.assertEqual(b2h(outp), t['request']['encoded_cmd'])
with_udh = b'\x02\x70\x00' + outp
#print("with_udh: %s" % b2h(with_udh))
tpdu = SMS_DELIVER(tp_udhi=True, tp_oa=self.da, tp_pid=0x7F, tp_dcs=0xF6,
tp_scts=h2b('22705200000000'), tp_udl=3, tp_ud=with_udh)
#print("TPDU: %s" % tpdu)
#print("tpdu: %s" % b2h(tpdu.to_bytes()))
self.assertEqual(b2h(tpdu.to_bytes()), t['request']['encoded_tpdu'])
# also test decoder
dec_tar, dec_spi, dec_apdu = self.dialect.decode_cmd(kset, outp)
self.assertEqual(b2h(t['request']['apdu']), b2h(dec_apdu))
self.assertEqual(b2h(dec_tar), b2h(self.tar))
self.assertEqual(dec_spi, t['spi'])
def test_decode_resp(self):
for t in SmsOtaTestCase.testdatasets:
with self.subTest(name=t['name']):
kset = t['ota_keyset']
r, d = self.dialect.decode_resp(kset, t['spi'], t['response']['encoded_resp'])
#print("RESP: %s / %s" % (r, d))
self.assertEqual(r.response_status, t['response']['response_status'])
self.assertEqual(d.number_of_commands, t['response']['number_of_commands'])
self.assertEqual(d.last_status_word, t['response']['last_status_word'])
self.assertEqual(d.last_response_data, t['response']['last_response_data'])
######################################################################
# Expanded Remote Application data format (ETSI TS 102 226 Section 5.2)
######################################################################
class BerTlvLengthTestCase(unittest.TestCase):
"""The definite-length BER-TLV length field (ISO/IEC 8825-1) used by the
expanded format, incl. the multi-byte (>127) forms (0x81xx / 0x82xxxx)."""
def test_roundtrip(self):
# (length value, expected encoded bytes)
vectors = [
(0, '00'),
(1, '01'),
(127, '7f'),
(128, '8180'),
(198, '81c6'), # big ~198 byte GET STATUS registry from a sja5
(255, '81ff'),
(256, '820100'),
(65535, '82ffff'),
]
for length, encoded in vectors:
with self.subTest(length=length):
built = BerTlvLen.build(length)
self.assertEqual(b2h(built), encoded)
self.assertEqual(BerTlvLen.parse(built), length)
class ExpandedCmdTestCase(unittest.TestCase):
"""Command Scripting template TS 102 226 5.2.1"""
def test_single_capdu_golden(self):
# GP GET STATUS, Le=00, TS 102 226 5.2.1.1 R-APDU
out = encode_expanded_cmd(h2b('80f24002024f0000'))
# aa = TS 101 220 table 7.18 Command Scripting template tag
# 0a = length 10
# 22 = TS 101 220 table 7.19 C-APDU tag
# 08 = length
# + C-APDU
self.assertEqual(b2h(out), 'aa0a220880f24002024f0000')
def test_multi_capdu_golden(self):
out = encode_expanded_cmd([h2b('80f24002024f0000'), h2b('00a40004023f0000')])
self.assertEqual(b2h(out), 'aa14220880f24002024f0000220800a40004023f0000')
def test_multibyte_length_golden(self):
# C-APDU: 4 header + 1 Lc + 195 data = 200 bytes.
# 200 byte C-APDU forces long form BER lengths:
# C-APDU TLV, 200 -> 81c8 + template 203 -> 81cb
capdu = h2b('80f24000') + bytes([195]) + bytes(range(195))
self.assertEqual(len(capdu), 200)
out = encode_expanded_cmd(capdu)
# aa 81 cb | 22 81 c8 | <200 byte capdu>
self.assertEqual(b2h(out[:6]), 'aa81cb2281c8')
self.assertEqual(out[6:], capdu)
def test_roundtrip(self):
for apdus in [[h2b('80f24002024f0000')],
[h2b('00a40004023f00'), h2b('80f24002024f0000')],
[h2b('00'*250)]]:
with self.subTest(n=len(apdus)):
out = encode_expanded_cmd(apdus)
parsed = ExpandedCmd.parse(out)
self.assertEqual([h2b(c.c_apdu) for c in parsed.commands], apdus)
class ExpandedRespTestCase(unittest.TestCase):
"""Decoding of the Response Scripting template (TS 102 226 5.2.2)."""
def test_registry_golden(self):
# real card case: GET STATUS returns a ~198 byte registry TLV + SW 9000
# R-APDU = 198 data + 2 SW = 200/81c8
# 'number of executed' TLV 80 01 01.
registry = bytes(range(198))
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=1),
responses=[dict(r_apdu=dict(response_data=b2h(registry), status_word='9000'))])))
# ab | 81 ce | 80 01 01 | 23 81 c8 | <198 data> 90 00
self.assertEqual(b2h(data[:9]), 'ab81ce8001012381c8')
dec = decode_expanded_resp(data)
self.assertEqual(dec.number_of_commands, 1)
self.assertEqual(len(dec.commands), 1)
self.assertEqual(dec.last_status_word, '9000')
self.assertEqual(dec.last_response_data, b2h(registry))
def test_status_only_golden(self):
# last command, no response data, SW 6132
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=1),
responses=[dict(r_apdu=dict(response_data='', status_word='6132'))])))
self.assertEqual(b2h(data), 'ab0780010123026132')
dec = decode_expanded_resp(data)
self.assertEqual(dec.last_status_word, '6132')
self.assertEqual(dec.last_response_data, '')
def test_multi_command(self):
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=2),
responses=[dict(r_apdu=dict(response_data='6f21', status_word='9000')),
dict(r_apdu=dict(response_data='', status_word='6a82'))])))
dec = decode_expanded_resp(data)
self.assertEqual(dec.number_of_commands, 2)
self.assertEqual([(c.status_word, c.response_data) for c in dec.commands],
[('9000', '6f21'), ('6a82', '')])
# last == final R-APDU, error status included
self.assertEqual(dec.last_status_word, '6a82')
self.assertEqual(dec.last_response_data, '')
def test_bad_format(self):
# ab | 06 | 80 01 01 | 90 01 01
data = h2b('ab06800101900101')
dec = decode_expanded_resp(data)
self.assertEqual(str(dec.bad_format), 'unknown_tag')
self.assertIsNone(dec.last_status_word)
def test_immediate_action_error(self):
# ab | 06 | 80 01 01 | 81 01 01
data = h2b('ab06800101810101')
dec = decode_expanded_resp(data)
self.assertEqual(str(dec.immediate_action_response), 'suspension_error')
def test_script_chaining_error(self):
# ab | 06 | 80 01 01 | 83 01 02
data = h2b('ab06800101830102')
dec = decode_expanded_resp(data)
self.assertEqual(str(dec.script_chaining_response), 'not_supported')
def test_truncation_is_flagged(self):
"""TS 102 226 5.2.1.1: SW 62F1 means the C-APDU response data was truncated, and
"this shall terminate the processing of the command list"
halves are invisible in the R-APDU list, truncated + aborted script must not pass as complete"""
# second command truncated -> processing stopped at that point
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=2),
responses=[dict(r_apdu=dict(response_data='6f21', status_word='9000')),
dict(r_apdu=dict(response_data='aabb', status_word='62f1'))])))
dec = decode_expanded_resp(data)
self.assertTrue(dec.truncated)
self.assertEqual(dec.last_status_word, '62f1')
def test_untruncated_response_is_not_flagged(self):
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=1),
responses=[dict(r_apdu=dict(response_data='6f21', status_word='9000'))])))
self.assertFalse(decode_expanded_resp(data).truncated)
# 62xx that is not 62F1 is warning, not truncation
data = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=1),
responses=[dict(r_apdu=dict(response_data='', status_word='6282'))])))
self.assertFalse(decode_expanded_resp(data).truncated)
class ExpandedIndefiniteTestCase(unittest.TestCase):
"""Indef len coding of expanded format TS 102 226 tables
5.2a/5.10a; cmd tag AE, resp tag AF.
Golden vectors captured from live eUICC over SCP81/HTTPS."""
def test_cmd_single_golden(self):
# RAM GET DATA 80CA00E000 -> AE 80 | 22 05 80ca00e000 | 00 00
out = encode_expanded_cmd(h2b('80ca00e000'), length_coding='indefinite')
self.assertEqual(b2h(out), 'ae80220580ca00e0000000')
def test_cmd_multi_golden(self):
# RFM: SELECT MF / SELECT EF.ICCID / READ BINARY, each in one C-APDU
# TLV, wrapped in indef Command Scripting template
out = encode_expanded_cmd([h2b('00a4000c023f00'), h2b('00a4000c022fe2'),
h2b('00b000000a')], length_coding='indefinite')
self.assertEqual(b2h(out),
'ae80220700a4000c023f00220700a4000c022fe2220500b000000a0000')
def test_cmd_definite_is_default(self):
# The default/explicit definite keeps the tag AA
self.assertEqual(encode_expanded_cmd(h2b('80ca00e000')),
encode_expanded_cmd(h2b('80ca00e000'), length_coding='definite'))
self.assertEqual(b2h(encode_expanded_cmd(h2b('80ca00e000'))), 'aa07220580ca00e000')
def test_cmd_invalid_length_coding(self):
with self.assertRaises(ValueError):
encode_expanded_cmd(h2b('80ca00e000'), length_coding='bogus')
def test_resp_rfm_golden(self):
# AF 80 | 23 02 9000 | 23 02 9000 | 23 0c <ICCID> 9000 | 00 00
# indef res has no "number of executed" TLV.
dec = decode_expanded_resp(h2b(
'af80' '23029000' '23029000' '230c988812010000408608149000' '0000'))
self.assertEqual(len(dec.commands), 3)
self.assertEqual([(c.status_word, c.response_data) for c in dec.commands],
[('9000', ''), ('9000', ''), ('9000', '98881201000040860814')])
self.assertEqual(dec.last_status_word, '9000')
self.assertEqual(dec.last_response_data, '98881201000040860814')
# report the R-APDU count instead
self.assertEqual(dec.number_of_commands, 3)
def test_resp_ram_golden(self):
# RAM GET DATA: R-APDU carrying the SD key info TLV + SW.
resp = ('af80' '2334e030c00403308810c00402308810c00401308810c00402408810'
'c00401408510c00403018810c00402018810c004010188109000' '0000')
dec = decode_expanded_resp(h2b(resp))
self.assertEqual(len(dec.commands), 1)
self.assertEqual(dec.last_status_word, '9000')
self.assertEqual(dec.last_response_data,
'e030c00403308810c00402308810c00401308810c00402408810'
'c00401408510c00403018810c00402018810c00401018810')
def test_resp_truncated_is_rejected(self):
# last byte chopped off: the end-of-contents marker is incomplete
good = h2b('af80' '23029000' '230c988812010000408608149000' '0000')
for cut in (1, 2, 3):
with self.subTest(cut=cut):
with self.assertRaises(ValueError):
decode_expanded_resp(good[:-cut])
def test_resp_definite_still_parses(self):
# same decoder still handles the definite AB template.
dec = decode_expanded_resp(h2b('ab0780010123029000'))
self.assertEqual(dec.number_of_commands, 1)
self.assertEqual(dec.last_status_word, '9000')
def test_resp_indefinite_bad_format(self):
# AF 80 | 90 01 01 | 00 00 unknown_tag no R-APDU
dec = decode_expanded_resp(h2b('af8090010100 00'.replace(' ', '')))
self.assertEqual(str(dec.bad_format), 'unknown_tag')
self.assertIsNone(dec.last_status_word)
def test_resp_missing_eoc_raises(self):
# AF 80 | 23 02 9000 without end-of-contents.
with self.assertRaises(ValueError):
decode_expanded_resp(h2b('af8023029000'))
class ExpandedSmsPipelineTestCase(unittest.TestCase):
"""expanded format + TS 102 225 SMS security witj 3DES keyset,
to ensure remote_format does not affect the compact path"""
def __init__(self, methodName='runTest', **kwargs):
super().__init__(methodName, **kwargs)
self.od = OtaKeyset(algo_crypt='triple_des_cbc2', kic_idx=3,
kic=h2b('C21DD66ACAC13CB3BC8B331B24AFB57B'),
algo_auth='triple_des_cbc2', kid_idx=3,
kid=h2b('12110C78E678C25408233076AA033615'))
self.dialect = OtaDialectSms()
self.tar = h2b('000000')
def test_cmd_expanded_secured_roundtrip(self):
spi = SPI_CC_POR_CIPHERED_CC
enc = self.dialect.encode_cmd(self.od, self.tar, spi, h2b('80f24002024f0000'),
remote_format='expanded')
# decode_cmd returns opaque 'Command Scripting template'
dec_tar, dec_spi, dec_secured = self.dialect.decode_cmd(self.od, enc)
self.assertEqual(b2h(dec_tar), b2h(self.tar))
self.assertEqual(dec_spi, spi)
self.assertEqual(b2h(dec_secured), 'aa0a220880f24002024f0000')
def test_cmd_expanded_list(self):
spi = SPI_CC_POR_CIPHERED_CC
enc = self.dialect.encode_cmd(self.od, self.tar, spi,
[h2b('80f24002024f0000'), h2b('00a40004023f0000')],
remote_format='expanded')
_, _, dec_secured = self.dialect.decode_cmd(self.od, enc)
parsed = ExpandedCmd.parse(dec_secured)
self.assertEqual([c.c_apdu for c in parsed.commands],
['80f24002024f0000', '00a40004023f0000'])
def test_resp_expanded_plaintext(self):
# plaintext (u:nciphered + no CC) expanded response SMS
# containing a 198 byte GP registry + SW 9000 as above, decode it through decode_resp().
spi = SPI_CC_POR_UNCIPHERED_NOCC
registry = bytes(range(198))
secured = ExpandedRemoteResp.build(dict(body=dict(
num_executed=dict(number_of_commands=1),
responses=[dict(r_apdu=dict(response_data=b2h(registry), status_word='9000'))])))
rpl = 1 + 3 + 5 + 1 + 1 + len(secured) # RHL-STS + secured data
resp_body = rpl.to_bytes(2, 'big') + b'\x0a' + self.tar + b'\x00'*5 + b'\x00' + b'\x00' + secured
sms = b'\x02\x71\x00' + resp_body
r, dec = self.dialect.decode_resp(self.od, spi, sms, remote_format='expanded')
self.assertEqual(r.response_status, 'por_ok')
self.assertEqual(dec.number_of_commands, 1)
self.assertEqual(dec.last_status_word, '9000')
self.assertEqual(dec.last_response_data, b2h(registry))
def test_compact_still_default(self):
# no remote_format -> compact default
spi = SPI_CC_POR_UNCIPHERED_NOCC
r, d = self.dialect.decode_resp(self.od, spi, '027100000e0ab000110000000000000001612f')
self.assertEqual(d.number_of_commands, 1)
self.assertEqual(d.last_status_word, '612f')
self.assertEqual(d.last_response_data, '')
if __name__ == "__main__":
unittest.main()
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