This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/baseband-devel@lists.osmocom.org/.
Harald Welte laforge at gnumonks.orgAaron,
the usual problems with end-to-end encryption in GSM come into play:
* as the voice path is not transparent but transcoded any number of times
in the core network, you cannot simply encrypt the codec frames but gqwill
have to initiate a CSD ('modem') connection.
* not many networks support it anymore
* calling rates are more expensive
* you immediately leave a visible trail, since nobody else uses CSD
And no, neither is the ARM7 fast enough for any crypto, nor do we implement
CSD at all.
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)