In the current form we assume that the files that store the key material
and the related configuration parameters have the same layout for all
algorithms. This assumption makes sense since for the currently
supported algorithms (not TUAK) this is indeed true.
(With the exception that there may be RFU bits still set to 1, even
though the spec clearly state those bits should be 0. However, this does
not matter in practice)
With the advent of TUAK longer keys were introduced. This made a new file
layout necessary. Unfortunately this also means that we can not rely on
the coincidence described above. This means we have to be more specific
when reading and writing the files.
This patch adds classes to model the file layout for each algorithm.
We also print the key (and OP/OPc) for each location individually
(2g,3g,4g5g). Even though the programmed key should be the same in all
locations, this allows better diagnosis. Also with the advent of TUAK we
may have different key material in 4g5g location.
Related: SYS#6473
The sysmo-usim-sja2 which is currently used for testing somewhat old. In
order to have a defined state here lets exchange it with a new card.
This will also ensure that we have a card with the most recent card
profile in the tester.
Depending on the card profile the sysmoUSIM-SJA2 may come with an USIM
application or with an USIM and an ISIM application installed. If the
ISIM application is not present the related application must not get
selected and the related files must not accessed. At the moment the
presence of the ISIM application is detected by checking the ATR,
however the ATR only identifies a certain OS version or type, not an
application. Lets look at the EF.DIR first and dtermine the presence of
the applications by looking for the related AID.
Related: SYS#4817
Adding support for the new SJA2 simcard type requires comprensive
refactoring of sysmo-usim-tool. We resolve the commonalities of
both simcard models in a class based approach so that code duplication
is reduced to a minium.
- Refactor sysmo-usim-tool into a class based model
- Add support for SJA2 simcard models
- Add tests for SJA2 simcard models
Change-Id: I0feab71bdaab079b35737bb4e0e2a417c4a1f96b
Related: SYS#4466
Philipp Maier
Harald Welte