Phone Call Security

Pander pander at
Mon Jun 4 10:07:08 CEST 2007

Matthew S. Hamrick wrote:

Could it be possible to have you GSM request a non-encrypted channel? 
Would this channel provide more bandwidth or less delay because of that? 
If so, the extra bandwidth or reduced delay could be used for 
efficiently using your own encryption.

Can anyone elaborate if this is possible with the current network 
hardware and GSM service providers? If this is possible, that could mean 
a new service for the GSM service providers: network subscriptions which 
you can choose per connection to have network encryption enabled or not. 
Your telephone could e.g. automatically disable it when you are calling 
with someone which has a telephone supporting the same end to end 
encryption as yours does.



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