Discussion:
Modified frame number
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tom
2014-10-16 20:53:56 UTC
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Hi all
Need a little help as to how this "modified frame number" is generated.
I am comparing two systems each recording the same ARFCN at the same
time while I
am connected and making a call on my own phone. System A is USRP1 and
Air probe while system B is Motorola C123. with Osmocom ccch_scan.
With the Air probe capture I have all needed for XOR,Kraken and
Find_kc. However with system B I have same info but I am missing the
"modified frame number". Even with this I think I have enough to run XOR
and Kraken but will not be able to match the key using find_kc.
Can someone explain how this number is generated.

Tom

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