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ts_31_102: EF SUCI_Calc_Info: fix decoding empty files

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When trying to use `edit_binary_decoded` with an empty file, pysim
runs into a len(None) exception, because hpkl.to_dict()['hnet_pubkey_list'] returns
None.

Can reproduced with a CCC Camp 2023 usim and editing the file.

Change-Id: Ib8e322e65dd768bfd49e7a5620a2163f12a74ec7
This commit is contained in:
Alexander Couzens
2025-12-04 15:31:03 +01:00
parent 572a81f2af
commit 125449126d
1 changed files with 4 additions and 1 deletions
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5
pySim/ts_31_102.py
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@@ -389,7 +389,10 @@ class EF_SUCI_Calc_Info(TransparentEF):
# remaining data holds Home Network Public Key Data Object # remaining data holds Home Network Public Key Data Object
hpkl = EF_SUCI_Calc_Info.HnetPubkeyList() hpkl = EF_SUCI_Calc_Info.HnetPubkeyList()
hpkl.from_tlv(in_bytes[pos:]) hpkl.from_tlv(in_bytes[pos:])
hnet_pubkey_list = self._compact_pubkey_list(hpkl.to_dict()['hnet_pubkey_list'])
hnet_pubkey_list = []
if hpkl.to_dict()['hnet_pubkey_list']:
hnet_pubkey_list = self._compact_pubkey_list(hpkl.to_dict()['hnet_pubkey_list'])
return { return {
'prot_scheme_id_list': prot_scheme_id_list, 'prot_scheme_id_list': prot_scheme_id_list,