Presence Security
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1 Presence Security 3GPP2 TSG-X MMD
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Presence Security. 3GPP2 TSG-X MMD. Presence Architecture. Presence Security. MMD working on Presence Security X.P0027-002-0 v1.0 Based on 3GPP TS 33.141-610 Publication expected in Summer 2005 Ut Interface Interface between UE and AS UE and Presence List Server UE and Presence Server - PowerPoint PPT Presentation
Transcript of Presence Security
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Presence Security
3GPP2 TSG-X MMD
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Presence Architecture
Watcher application
Px = Cx
P-CSCF S-CSCF
I-CSCF
S-CSCFPresence
Server
Presentity Presence Proxy
HSS
Pw = ISC
Pw =Mw
Watcher Presence Proxy
Pw = Gm
Application Server
(Presence List)
ISC
Watcher application
Pw = ISC
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Presence Security
MMD working on Presence Security– X.P0027-002-0 v1.0– Based on 3GPP TS 33.141-610– Publication expected in Summer 2005
Ut Interface– Interface between UE and AS
» UE and Presence List Server» UE and Presence Server
– Data over Ut interface exchanged over HTTP
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Ut Interface Security
Desired Security features– Authentication of the subscriber by presence server– Confidentiality protection– Integrity protection– Support for Authentication Proxy
Security Mechanisms– 3GPP specifies using TLS for Ut interface– Keys derived using GBA/GAA
» Subscriber certificates or shared secrets
Similar security mechanisms needed for other applications– Conferencing
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Next Steps
How should 3GPP2 proceed?– Does TSG-S WG4 have any plans for GBA (or something
similar)» If yes, what is the schedule
