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README.md update / re-wording

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Let's give a better description of what the project is all about, and
differentiate reading/exploring any SIM from writing/updating a special
programmable one where you know the ADM credentials.

Change-Id: Ied2a9626594e9735d92d4eabe6c6b90f92aa2909
This commit is contained in:
Harald Welte
2024-12-05 16:37:55 +01:00
committed by laforge
parent 67c0fff15b
commit 16920aeacd
1 changed files with 21 additions and 8 deletions
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README.md
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@@ -1,16 +1,29 @@
pySim - Read, Write and Browse Programmable SIM/USIM/ISIM/HPSIM Cards
=====================================================================
pySim - Tools for reading, decoding, browsing SIM/USIM/ISIM/HPSIM/eUICC Cards
=============================================================================
This repository contains a number of Python programs that can be used
to read, program (write) and browse all fields/parameters/files on
SIM/USIM/ISIM/HPSIM cards used in 3GPP cellular networks from 2G to 5G.
This repository contains a number of Python programs related to working with
subscriber identity modules of cellular networks, including but not limited
to SIM, UICC, USIM, ISIM, HPSIMs and eUICCs.
* `pySim-shell.py` can be used to interactively explore, read and decode contents
of any of the supported card models / card applications. Furthermore, if
you have the credentials to your card (ADM PIN), you can also write to the card,
i.e. edit its contents.
* `pySim-read.py` and `pySim-prog.py` are _legacy_ tools for batch programming
some very common parameters to an entire batch of programmable cards
* `pySim-trace.py` is a tool to do an in-depth decode of SIM card protocol traces
such as those obtained by [Osmocom SIMtrace2](https://osmocom.org/projects/simtrace2/wiki)
or [osmo-qcdiag](https://osmocom.org/projects/osmo-qcdiag/wiki).
* `osmo-smdpp.py` is a proof-of-concept GSMA SGP.22 Consumer eSIM SM-DP+ for lab/research
* there are more related tools, particularly in the `contrib` directory.
Note that the access control configuration of normal production cards
issue by operators will restrict significantly which files a normal
user can read, and particularly write to.
The full functionality of pySim hence can only be used with on so-called
programmable SIM/USIM/ISIM/HPSIM cards.
programmable SIM/USIM/ISIM/HPSIM cards, such as the various
[sysmocom programmable card products](https://shop.sysmocom.de/SIM/).
Such SIM/USIM/ISIM/HPSIM cards are special cards, which - unlike those
issued by regular commercial operators - come with the kind of keys that
@@ -49,9 +62,9 @@ pySim-shell vs. legacy tools
----------------------------
While you will find a lot of online resources still describing the use of
pySim-prog.py and pySim-read.py, those tools are considered legacy by
`pySim-prog.py` and `pySim-read.py`, those tools are considered legacy by
now and have by far been superseded by the much more capable
pySim-shell. We strongly encourage users to adopt pySim-shell, unless
`pySim-shell.py`. We strongly encourage users to adopt pySim-shell, unless
they have very specific requirements like batch programming of large
quantities of cards, which is about the only remaining use case for the
legacy tools.