A User Centric Security Model for Tamper-Resistant Devices

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Chapter 10 Conclusions and Future Research Directions Contents 10.1 Summary and Conclusions . . . . . . . . . . . . . . . . . . . . . . 225 10.2 Recommendations for Future Work . . . . . . . . . . . . . . . . 229 In this chapter we conclude the thesis by summarising our contributions and discussing some of the future challenges that need to be addressed. 224
10.1 Summary and Conclusions 10.1 Summary and Conclusions The main goal of this thesis was to explore the viability of user ownership for a security sensitive device whose architecture is based on smart card technology. The introduction of this user ownership aects all stages of the smart card and application lifecycle, which we analysed during the course of this thesis. We began the discussion by mapping the security and privacy landscape from three dierent computing elds: smart cards, mobiles and traditional computing environments. These computing devices are used by individual users with an ever growing reliance on them, so there needs to be a unied security and privacy-preserving architecture that can be easily integrated to any of these computing devices. We consider that the User Centric Tamper- Resistant Device (UCTD) has the potential to deliver such a unied (services) architecture. We provided the rationale for the UCTD framework. To explain how we selected an appropriate base architecture for the UCTDs, we provided a comparison between dierent proposals that included TPM, AEGIS, ARM TrustZone, M-Shield, and GlobalPlatform's TEE and the smart card architecture. This comparison gave us a clear indication that the smart card architecture is the one most suited to be a UCTD that supports unied security, trust, and privacy architecture for dierent computing devices. However, the issue with smart card technology is its ownership architecture that is stringently under a centralised authority. A possible solution is to delegate smart card ownership from a centralised authority to its users. Before we delved into the core of the thesis, we provided a detailed coverage of dierent ownership models that exist in the smart card ecosystem. We began with the centralised control of smart cards provided by the Issuer Centric Smart Card Ownership Model (ICOM), and discussed its advantages and drawbacks. We then briey examined dierent proposals that support the ICOM framework, including Java Card, Multos and GlobalPlatform. We referred to these prominent ICOM frameworks throughout the thesis, comparing and contrasting our proposal with them. This short introduction to the ICOM frameworks was provided to set the scenery and to help the reader understand the present characteristics of dierent frameworks that support the ICOM. Subsequently, we discussed the frameworks in the smart card industry that come close to providing the user ownership. Unfortunately, the concept of ownership as described in our proposal of the User Centric Smart Card Ownership Model (UCOM) is not close to any of the existing proposals. The concept of ownership in UCOM has to do with freedom of choice and not complete control of the smart card device as the card issuers have in the ICOM. Therefore, the concept of freedom of choice can be considered a novel idea in the context of the smart card technology. We identied dierent stakeholders and their security and operational requirements. This discussion served as an introduction to the 225
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A User Centric Security Model for T
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Declaration These doctoral studies
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R. N. Akram, K. Markantonakis, and
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Abstract In this thesis we propose
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CONTENTS 3.4.1 Supplier . . . . . .
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CONTENTS 7 Application Sharing Mech
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CONTENTS C.4 Secure and Trusted Cha
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LIST OF FIGURES 8.6 Control ow diag
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List of Abbreviations AAC Applicati
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1.1 Setting the Scene 1.1 Setting t
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1.2 A Brief History of Smart Cards
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1.3 Motivation and Challenges Over
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1.3 Motivation and Challenges compu
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1.4 Contributions the UCTD manufact
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1.5 Structure of the Thesis traditi
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Chapter 2 User Centric Tamper-Resis
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2.2 Rationale for a User Centric Ta
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2.2 Rationale for a User Centric Ta
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2.3 Candidates for User Centric Tam
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Businesses Governments Privacy Pres
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2.4 The User Centric Tamper-Resista
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2.5 Case Studies an enrolment proce
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2.5 Case Studies issued the applica
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Chapter 3 Smart Card Ownership Mode
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3.2 Issuer Centric Smart Card Owner
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3.2 Issuer Centric Smart Card Owner
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3.3 Frameworks for the ICOM which i
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3.3 Frameworks for the ICOM Applica
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3.3 Frameworks for the ICOM which i
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3.3 Frameworks for the ICOM Element
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3.4 User Centric Smart Card Ownersh
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3.5 Security and Operational Requir
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Service Provider 3.6 Coopetitive Ar
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Chapter 4 User Centric Smart Card A
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4.2 Platform Architecture Platform
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4.2 Platform Architecture manager c
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4.3 Trusted Environment & Execution
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4.4 Security Assurance and Validati
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4.5 Attestation Mechanisms 4.5 Atte
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4.5 Attestation Mechanisms rational
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4.5 Attestation Mechanisms otherwis
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4.6 Device Ownership 4.6.2 User Own
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4.7 Attestation Protocol can succes
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4.7 Attestation Protocol an adversa
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4.7 Attestation Protocol SC i ′ a
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4.8 Protocol Analysis CasperFDR app
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4.9 Summary whereas the online atte
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5.1 Introduction 5.1 Introduction E
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5.2 GlobalPlatform Card Management
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5.3 Multos Card Management Framewor
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5.4 Proposed Smart Card Management
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5.4 Proposed Smart Card Management
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5.5 Card Management-Related Issues
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Chapter 6 Secure and Trusted Channe
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6.2 Secure Channel Protocols 6.2 Se
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6.2 Secure Channel Protocols smart
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6.2 Secure Channel Protocols SOG-16
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6.2 Secure Channel Protocols Notati
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6.3 Secure and Trusted Channel Prot
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6.4 Secure and Trusted Channel Prot
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6.5 Application Acquisition and Con
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6.6 Analysis of the Proposed Protoc
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6.7 Summary For the STCP ACA , we n
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Chapter 7 Application Sharing Mecha
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7.2 Application Sharing Mechanism 7
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7.2 Application Sharing Mechanism I
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7.2 Application Sharing Mechanism a
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7.3 UCTD Firewall utilises CDAM to
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7.3 UCTD Firewall application. Ther
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7.3 UCTD Firewall 7.3.6 Cross-Devic
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7.3 UCTD Firewall and asynchronous
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Page 231 and 232: Appendix A Description of Protocols
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C.3 Attestation Protocol 112 f a l
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C.3 Attestation Protocol 214 } 215
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C.3 Attestation Protocol 312 inLeng
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C.3 Attestation Protocol 410 this .
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C.3 Attestation Protocol 7 import j
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C.3 Attestation Protocol 107 this .
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C.3 Attestation Protocol 204 ( this
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C.3 Attestation Protocol 302 } 303
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C.4 Secure and Trusted Channel Prot
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C.6 Application Acquisition and Con
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C.9 Platform Binding Protocol 552 r
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C.10 Abstract Virtual Machine 42 "
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C.11 Implementation Helper Classes
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BIBLIOGRAPHY August 2009, pp. 2035.
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BIBLIOGRAPHY Available: http://www.
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BIBLIOGRAPHY ing, vol. 2, pp. 42342
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BIBLIOGRAPHY Science, P. Samarati,
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