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Hello Sébastien
However, I known nothing to the GSM protocol and
don't understand why the Kc
must be saved. This value is generated from the RUN GSM ALGORITHM command,
isn't it? According to the spec, is the ME supposed to backup the last
computed key or something like that?
No idea, but they backup a lot stuff, like last used ARFCNs and so on.
However, I cannot find a file for the famous
"cannot be read" Ki used as
input to the RUN GSM ALG command. Is this key not stored in a SIM file? Not
documented in the spec? I think I will do that even if not specified.
I think it is stored in a file, but the read access will be disabled,
but you are right, the spec does not specify an EF:KI or anything semilar.
You could try to select all files 0000 to FFFF maybe you find something
undocumentated ;-)
"stored in the SIM" means nothing special,
so what's not forbidden is
allowed. Ki will be in a file too. Does someone see a problem with this?
No, that should be absolutely no problem - no phone will ever do a
select to this file ;-)
Regards.
Philipp
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