We're creating a 'pyosmocom' pypi module which contains a number of core
Osmocom libraries / interfaces that are not specific to SIM card stuff
contained here.
The main modules moved in this initial step are pySim.tlv, pySim.utils
and pySim.construct. utils is split, not all of the contents is
unrelated to SIM Cards. The other two are moved completely.
Change-Id: I4b63e45bcb0c9ba2424dacf85e0222aee735f411
When creating the DES cipher object with DES.new, we use the property
card_keys.dek. This property may hold a 16 byte key, but DES uses
an 8 byte key (56 bit + 8 bit integrity). Pycryptodome does not
automatically ignore excess key bytes. Instead it throws an
exception. This means we need to make sure to supply only the first
8 bytes of card_keys.dek
See also: https://pycryptodome.readthedocs.io/en/latest/src/cipher/des.html
Related: OS#6531
Change-Id: I92e0dc6a6196b532bd8b53fca7b9e78070d6903f
If we're using a Secure Channel Protocol, this will add overhead
in terms of the C-MAC appended to the C-APDU. This means in turn that
the useable length of the data field shrinks by a certain number of
bytes.
Let's make sure the SCP instances expose an 'overhead' property
of how much overhead they add - and that other commands use this to
determine the maximum command data field length.
Change-Id: I0a081a23efe20c77557600e62b52ba90a401058d
pySim/global_platform/scp.py:27:0: W0404: Reimport 'Optional' (imported line 20) (reimported)
pySim/global_platform/scp.py:157:8: R1705: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it (no-else-return)
pySim/global_platform/scp.py:165:8: W0107: Unnecessary pass statement (unnecessary-pass)
pySim/global_platform/scp.py:182:8: R1705: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it (no-else-return)
pySim/global_platform/scp.py:189:8: R1705: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it (no-else-return)
pySim/global_platform/scp.py:266:4: W0221: Variadics removed in overriding 'SCP02._wrap_cmd_apdu' method (arguments-differ)
pySim/global_platform/scp.py:298:4: W0237: Parameter 'rsp_apdu' has been renamed to 'apdu' in overriding 'SCP02.unwrap_rsp_apdu' method (arguments-renamed)
pySim/global_platform/scp.py:314:7: C0121: Comparison 'l == None' should be 'l is None' (singleton-comparison)
pySim/global_platform/scp.py:436:11: C0121: Comparison 'host_challenge == None' should be 'host_challenge is None' (singleton-comparison)
pySim/global_platform/scp.py:506:4: W0237: Parameter 'rsp_apdu' has been renamed to 'apdu' in overriding 'SCP03.unwrap_rsp_apdu' method (arguments-renamed)
pySim/global_platform/scp.py:27:0: C0411: standard import "from typing import Optional" should be placed before "from Cryptodome.Cipher import DES3, DES" (wrong-import-order)
Change-Id: Idd2b779a6628c88d9a48c94b8581525209824426
This adds an implementation of the GlobalPlatform SCP03 protocol. It has
been tested in S8 mode for C-MAC, C-ENC, R-MAC and R-ENC with AES using
128, 192 and 256 bit key lengh. Test vectors generated while talking to
a sysmoEUICC1-C2T are included as unit tests.
Change-Id: Ibc35af5474923aed2e3bcb29c8d713b4127a160d
