9 Jan
2013
9 Jan
'13
9:10 p.m.
Hi,
* Dario Lombardo <dario.lombardo.ml(a)gmail.com> [2013-01-09 20:41]:
As described in Nico Golde's talk at 29c3, mobile
operators can deactivate
encryption on MT SMSes.
I think this is a misunderstanding, please check the
slides/video.
To check if a MT is encrypted I've started
'mobile'
with GSMTAP, and I've sent an sms to the mobile. Encryption seems to be
requested by the network. Now the question is: how can I be sure that
encryption is always activated?
If the network is not encrypting, you don't get a CIPHER
MODE COMMAND message. For MT you would have to generate
events that cause this, like sending an SMS. For MO you can
simply to a service request.
Cheers
Nico