laforge at osmocom.org
Sun Sep 20 11:55:54 UTC 2020
I'm not an expert in GEA and it's been a long time since I last looked at it.
On Fri, Sep 18, 2020 at 12:53:43PM +0300, Сергей Егоров wrote:
> Can the value of IOV_UI (Osmocom BS: 0, real BS: 0x10000000) affect the deciphering, and if yes then how??
well, as you know the IV (initialization vector) is an input parameter into the
encryption/decryption algorithm. It must match, otherwise you will get completely
You could try to modify the Osmocom stack (here: OsmoSGSN) to also use the same IV
that you see in your commercial/production netwokr, and see if that gets you any
further in understanding any differences?
- Harald Welte <laforge at osmocom.org> http://laforge.gnumonks.org/
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
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