10.20.2007, Josef Noll NISnet

NISnet meeting 10.10.2007

Mobile Applied Trusted Computing

Josef Noll,

josef@unik.no

10.10.2007, Josef Noll NISnet

Security and authentication:

Leading questions What do I fear?

– That somebody steals my identity and I can't do anything about it.– That biometrics takes it all – and privacy disappears

What can I use to make life more comfortable?– Reduce number of “secure devices” I have to carry (BankID,

Telenor access card, keys, money, credit card, …)– Have a device which is secure (enough).

Why is my phone the security infrastructure?– Because I can ask my operator to block it, if it gets stolen.– Because it is not an insecure Microsoft device.

10.10.2007, Josef Noll NISnet

Summary:

Identity in the virtual world Real world:

see and/or talk Voice Face

Virtual world: email, web

Username, passwd SIM, PKI Security, privacy

Service world (between providers)

Identity management Service level agreement

(SLA) Trust relation

10.10.2007, Josef Noll NISnet

Introduction:

Identity Identity is attributes of your persona

– Social, Corporate and Private IDs Internet was built without an identity layer

– Identity 2.0 stems from Web 2.0– People, information and software– More user-oriented (wikis, comments, tags)– More seamless web services (AJAX)

Service related security– Provide just the information which is necessary

Mobile challenges

10.10.2007, Josef Noll NISnet

Summary:

Identity 2.0 – The goal User centric

– More like real life ID’s (passport, license)– Multiple ID’s (PID, SID, CID)– Certificates and preferences– Choose attributes

~more privacy ID providers

– Multiple providers– Own certificates

Mobile, and de-centralized

Personal(PID)

Corporate(CID)Social

(SID)

Identity

10.10.2007, Josef Noll NISnet

Challenge: Role based service access

Next Generation Applications:

– Customized services– Remote services– Proximity services– High flexibility– Telecom-IT integration

Challenges– Privacy– Trust– Application security

Appx

Appy

Appz

Identity providerCorporate - CID

VPN admittance Public Authority

…

Bank

Application providers

CertificateCertifica

te

Certificate

Social - SID

sports origin

Private - PIDMastercard,

VisaSoc. sec. number

Certificate

Telecom

Josef

Role based service access

My identities

10.10.2007, Josef Noll NISnet

New role:Identity provider

Certificate

Josefine

Remote services

Proximity services

Who provides?–ID provider

Where to store?–Network–Phone

How to store/backup?–long term, short term

10.10.2007, Josef Noll NISnet

Summary:Security Challenges Mobile based access and payment

– Next generation SIM cards– Virtualization of SIM credentials– Contactless access through NFC – (out-of-band) key distribution in heterogeneous networks

User privacy enhancing technologies– service specific authentication methods– role-based access mechanisms

Semantic Web and Web Services– Policies and rules support in ontologies– Trust distribution in distributed ontologies– Privacy protection in social networks