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pySim.global_platform.ota: Support KVN 0x70 for SCP02

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This is a non-standard extension of sysmocom products.

Change-Id: I00d52f7629aae190ee487ea3453f42b5f94cf42f
This commit is contained in:
Harald Welte
2024-07-20 15:53:02 +02:00
parent c60944a7de
commit 34dce409b9
1 changed files with 8 additions and 1 deletions
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9
pySim/global_platform/scp.py
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@@ -115,6 +115,12 @@ class SCP(SecureChannel, abc.ABC):
if not card_keys.kvn in range(self.kvn_range[0], self.kvn_range[1]+1): if not card_keys.kvn in range(self.kvn_range[0], self.kvn_range[1]+1):
raise ValueError('%s cannot be used with KVN outside range 0x%02x..0x%02x' % raise ValueError('%s cannot be used with KVN outside range 0x%02x..0x%02x' %
(self.__class__.__name__, self.kvn_range[0], self.kvn_range[1])) (self.__class__.__name__, self.kvn_range[0], self.kvn_range[1]))
elif hasattr(self, 'kvn_ranges'):
# pylint: disable=no-member
if all([not card_keys.kvn in range(x[0], x[1]+1) for x in self.kvn_ranges]):
raise ValueError('%s cannot be used with KVN outside permitted ranges %s' %
(self.__class__.__name__, self.kvn_ranges))
self.lchan_nr = lchan_nr self.lchan_nr = lchan_nr
self.card_keys = card_keys self.card_keys = card_keys
self.sk = None self.sk = None
@@ -216,7 +222,8 @@ class SCP02(SCP):
constr_iur = Struct('key_div_data'/Bytes(10), 'key_ver'/Int8ub, Const(b'\x02'), constr_iur = Struct('key_div_data'/Bytes(10), 'key_ver'/Int8ub, Const(b'\x02'),
'seq_counter'/Int16ub, 'card_challenge'/Bytes(6), 'card_cryptogram'/Bytes(8)) 'seq_counter'/Int16ub, 'card_challenge'/Bytes(6), 'card_cryptogram'/Bytes(8))
kvn_range = [0x20, 0x2f] # The 0x70 is a non-spec special-case of sysmoISIM-SJA2/SJA5 and possibly more sysmocom products
kvn_ranges = [[0x20, 0x2f], [0x70, 0x70]]
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
self.overhead = 8 self.overhead = 8