SIM card related Projects » pySim

I always found it rather odd that there are OS-specific executables in the sysmo-usim-tool software. The purpose was always to have a separate tool for those bits which are sysmo*SIM specific, and not normal ETSI/3GPP Standard. However, that was designed at a time before pySim-shell existed, and only pySim-prog was available.

As more sysmocom card models got introduced, those were not supported from within one sysmo-*sim-tool program, but with copy+pasted+edited command line tools. As a result, users need to know which card they have and execute the right tool for it, which is cumbersome. Even more so, as there are tools (specifically, the sysmo-isim-tool.sja2.py) which actually also supports the sysmoTSIM (3GPP Test profile).

Rather than unifying this inside the sysmo-usim-tool.git repo, I think it's better to reimplement the same functionality based on (and likely inside) pysim.git.

Now that we have the "new" capabilities of pySim-shell and its associated class model, we shouldn't really need separate[ly maintained] software for the actual functionality.

• set the imsi
  • 3GPP standard, not sysmocom specific
• set mnc length
  • 3GPP standard, not sysmocom specific
• show ICCID
  • 3GPP standard
• show AID list
  • 3GPP standard
• show milenage parameters
• set milenage parameters
• show ki value
• set ki value
• show [supported and configured] authentication algorithms
• set 2g/3g auth algo
• show OP/OPc configuration
• set OP/OPc
• show milenage SEQ/SQN parameters
• set milenage SEQ/SQN parameters to default
• dump proprietary file contents

Let's add whatever functionality is missing to the pySim class model, and then try to implement a potentially command-line compatible replacement for at least the most common operations. For the more esoteric ones (like milenage parameters), I think it's fine to have the user go through pySim-shell and do an edit_binary_decoded or something like that to change the parameters.