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Change-Id: Id3ae902ffb0a25fb69e2ebb469f925b7482f8d26
This commit is contained in:
Harald Welte
2024-05-12 14:05:01 +02:00
parent ad9c01f1c1
commit d45123f6ac
4 changed files with 45 additions and 14 deletions
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1
pySim/app.py
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@@ -31,6 +31,7 @@ from pySim.exceptions import SwMatchError
# CardModel is created, which will add the ATR-based matching and
# calling of SysmocomSJA2.add_files. See CardModel.apply_matching_models
import pySim.sysmocom_sja2
import pySim.sysmocom_euicc1
# we need to import these modules so that the various sub-classes of
# CardProfile are created, which will be used in init_card() to iterate

14
pySim/ota.py
View File

@@ -302,7 +302,7 @@ class OtaAlgoAuthDES3(OtaAlgoAuth):
class OtaAlgoCryptAES(OtaAlgoCrypt):
name = 'AES'
enum_name = 'aes_cbc'
blocksize = 16 # TODO: is this needed?
blocksize = 16
def _encrypt(self, data:bytes) -> bytes:
cipher = AES.new(self.otak.kic, AES.MODE_CBC, self.iv)
return cipher.encrypt(data)
@@ -356,20 +356,20 @@ class OtaDialectSms(OtaDialect):
# CHL + SPI (+ KIC + KID)
part_head = self.hdr_construct.build({'chl': chl, 'spi':spi, 'kic':kic, 'kid':kid, 'tar':tar})
#print("part_head: %s" % b2h(part_head))
print("part_head: %s" % b2h(part_head))
# CNTR + PCNTR (CNTR not used)
part_cnt = otak.cntr.to_bytes(5, 'big') + pad_cnt.to_bytes(1, 'big')
#print("part_cnt: %s" % b2h(part_cnt))
print("part_cnt: %s" % b2h(part_cnt))
envelope_data = part_head + part_cnt + apdu
#print("envelope_data: %s" % b2h(envelope_data))
print("envelope_data: %s" % b2h(envelope_data))
# 2-byte CPL. CPL is part of RC/CC/CPI to end of secured data, including any padding for ciphering
# CPL from and including CPI to end of secured data, including any padding for ciphering
cpl = len(envelope_data) + len_sig
envelope_data = cpl.to_bytes(2, 'big') + envelope_data
#print("envelope_data with cpl: %s" % b2h(envelope_data))
print("envelope_data with cpl: %s" % b2h(envelope_data))
if spi['rc_cc_ds'] == 'cc':
cc = otak.auth.sign(envelope_data)
@@ -383,7 +383,7 @@ class OtaDialectSms(OtaDialect):
else:
raise ValueError("Invalid rc_cc_ds: %s" % spi['rc_cc_ds'])
#print("envelope_data with sig: %s" % b2h(envelope_data))
print("envelope_data with sig: %s" % b2h(envelope_data))
# encrypt as needed
if spi['ciphering']: # ciphering is requested
@@ -395,7 +395,7 @@ class OtaDialectSms(OtaDialect):
else:
envelope_data = part_head + envelope_data
#print("envelope_data: %s" % b2h(envelope_data))
print("envelope_data: %s" % b2h(envelope_data))
if len(envelope_data) > 140:
raise ValueError('Cannot encode command in a single SMS; Fragmentation not implemented')