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pySim/transport add support for T=1 protocol and fix APDU/TPDU layer conflicts

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ETSI TS 102 221, section 7.3 specifies that UICCs (and eUICCs) may support two
different transport protocols: T=0 or T=1 or both. The spec also says that the
terminal must support both protocols.

This patch adds the necessary functionality to support the T=1 protocol
alongside the T=0 protocol. However, this also means that we have to sharpen
the lines between APDUs and TPDUs.

As this patch also touches the low level interface to readers it was also
manually tested with a classic serial reader. Calypso and AT command readers
were not tested.

Change-Id: I8b56d7804a2b4c392f43f8540e0b6e70001a8970
Related: OS#6367
This commit is contained in:
Philipp Maier
2024-10-28 17:28:43 +01:00
parent f951c56449
commit 852eff54df
25 changed files with 606 additions and 144 deletions
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15
tests/unittests/test_utils.py
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@@ -4,6 +4,7 @@ import unittest
from pySim import utils
from pySim.legacy import utils as legacy_utils
from pySim.ts_31_102 import EF_SUCI_Calc_Info
from osmocom.utils import h2b
# we don't really want to thest TS 102 221, but the underlying DataObject codebase
from pySim.ts_102_221 import AM_DO_EF, AM_DO_DF, SC_DO
@@ -189,5 +190,19 @@ class TestLuhn(unittest.TestCase):
# 18 digits; we expect luhn check digit to be added
self.assertEqual(utils.sanitize_iccid('898821100000053008'), '8988211000000530082')
class TestUtils(unittest.TestCase):
def test_parse_command_apdu(self):
# Case #1 APDU:
self.assertEqual(utils.parse_command_apdu(h2b('41414141')), (1,0,0,h2b('')))
# Case #2 APDU:
self.assertEqual(utils.parse_command_apdu(h2b('414141410F')), (2,0,15,h2b('')))
self.assertEqual(utils.parse_command_apdu(h2b('4141414100')), (2,0,256,h2b('')))
# Case #3 APDU:
self.assertEqual(utils.parse_command_apdu(h2b('41414141081122334455667788')), (3,8,0,h2b('1122334455667788')))
self.assertEqual(utils.parse_command_apdu(h2b('4141414100' + 256 * '42')), (3,256,0,h2b(256 * '42')))
# Case #4 APDU:
self.assertEqual(utils.parse_command_apdu(h2b('4141414108112233445566778804')), (4,8,4,h2b('1122334455667788')))
self.assertEqual(utils.parse_command_apdu(h2b('4141414100' + 256 * '42' + '00')), (4,256,256,h2b(256 * '42')))
if __name__ == "__main__":
unittest.main()