[8841] in cryptography@c2.net mail archive
Re: Starium (was Re: article: german secure phone)
daemon@ATHENA.MIT.EDU (Greg Rose)
Mon Jun 11 16:48:19 2001
Message-Id: <4.3.1.0.20010612062615.01b83b98@203.30.171.11>
Date: Tue, 12 Jun 2001 06:31:40 +1000
To: Ian BROWN <I.Brown@cs.ucl.ac.uk>
From: Greg Rose <ggr@qualcomm.com>
Cc: John Kelsey <kelsey.j@ix.netcom.com>,
Crypto List <cryptography@wasabisystems.com>
In-Reply-To: <562.991906879@cs.ucl.ac.uk>
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At 10:41 AM 6/7/2001 +0100, Ian BROWN wrote:
>I think to some extent, the next-generation mobile standards (UMTS/3GPP) will
>do this automatically... GSM currently encrypts the air interface between
>phone and base station; 3GPP pushes this much further back into the network
>(all the way back to a device in the user's home network, I think).
Not correct. It does push the encryption back into the visited network, to
the old "snoop the microwave backhaul" doesn't work. Once in the visited
network, the (currently being worked on) Network Domain Security takes
over, but that doesn't include encryption of voice. Note that if you're
roaming somewhere, and place a call to somewhere nearby, most of the time
your home network is never involved (except for location update and billing).
> Unfortunately I don't think two 3GPP phones talking to each other will do
>end-to-end -- saves the phone companies having to implement MITM or escrow
>functionality for law enforcement interfaces :(
End-to-End, of some form, has failed for lack of support in the standards
committee. (Support means at least 4 companies have to agree to work on it,
provide specifications, etc.) Only 3 weeks ago it was put on hold again.
Greg.
Greg Rose INTERNET: ggr@qualcomm.com
Qualcomm Australia VOICE: +61-2-9817 4188 FAX: +61-2-9817 5199
Level 3, 230 Victoria Road, http://people.qualcomm.com/ggr/
Gladesville NSW 2111 232B EC8F 44C6 C853 D68F E107 E6BF CD2F 1081 A37C
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