ciphering indicator

[Max]

The corresponding bug in android is unfixed since 2009.

In short: when the phone call is unencrypted this fact should be clearly
displayed to user according to GSM 02.07 spec. But, sim issuer could hide that
insecurity from user according to GSM 11.11 spec. Yet another but - according
to ETSI TS 122.101 #14 the phone OS can have configuration option for user to
override this security flaw, introduced by sim issuer.

Hence, mer should provide clear and easy to use api/tool to implement
configurable ciphering indicator to comply with ETSI TS 122.101 spec.

[Bill Filler (bfiller)]

Can you please provide clear steps on how to reproduce this bug and how it's related to telephony-service?

[Max (bubuta)]

1. Connect to any cell network.
2. Do you see ciphering indicator?

A more controlled/detailed setup is to make your own cell network (with OpenBTS or OpenBSC) without encryption enabled (A5/0) and program your own sim card with cipher indicator suppression set according GSM 11.11. Than try to connect to your network with your sim card - there should be clear, bright, easily noticeable notification to user regarding insecurity of the communication.