3 research outputs found

    Theoretical and practical efficiency aspects in cryptography

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    EThOS - Electronic Theses Online ServiceGBUnited Kingdo

    An asynchronous DES in contactless smartcard.

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    Siu, Pui-Lam.Thesis submitted in: August 2003.Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.Includes bibliographical references (leaves 104-109).Abstracts in English and Chinese.list of figures --- p.5list of tables --- p.7acknowledgements --- p.8abstract --- p.9Chapter 1. --- introduction --- p.12Chapter 1.1 --- Smart Card --- p.12Chapter 1.1.1 --- What is a smart card? --- p.12Chapter 1.1.2 --- How is a smart card different from the magnetic stripe card that I carry in my wallet? --- p.13Chapter 1.1.3 --- Why are interoperability and enforced standards crucial to widespread adoption of smart cards? --- p.13Chapter 1.1.4 --- Contact vs Contactless --- p.14Chapter 1.1.5 --- How secure and confidential contactless smart cards are? --- p.14Chapter 1.1.6 --- Contactless Smart Card Application Contactless smart cards are widely used in commercial fields as stored-value and secure storage cards --- p.14Chapter 1.1.7 --- What are the major benefits that Contactless smart cards offer to consumers? --- p.16Chapter 1.2 --- Design Motivation --- p.16Chapter 1.3 --- RF Part Interface --- p.17Chapter 1.4 --- Potential Advantages of Using Asynchronous Circuit --- p.19Chapter 1.5 --- Design Methodology for Asynchronous Circuit --- p.23Chapter 1.5.1 --- Difficulty and limitation of asynchronous design --- p.27Chapter 1.5.2 --- Asynchronous pipeline --- p.28Chapter 2. --- background theory --- p.32Chapter 2.1 --- Description of DES --- p.32Chapter 2.1.1 --- Outline of the Algorithm --- p.33Chapter 2.1.2 --- Initial Permutation --- p.35Chapter 2.1.3 --- Key Transformation --- p.35Chapter 2.1.4 --- Expansion Permutation --- p.37Chapter 2.1.5 --- S-box Substitution --- p.38Chapter 2.1.6 --- P-Box Permutation --- p.41Chapter 2.1.7 --- Final Permutation --- p.42Chapter 2.1.8 --- Decrypting DES --- p.43Chapter 2.1.9 --- Security of DES --- p.43Chapter 2.1.10 --- Weak Keys --- p.43Chapter 2.1.11 --- Algebraic Structure --- p.46Chapter 2.1.12 --- Key Length --- p.46Chapter 2.1.13 --- Number of Rounds --- p.48Chapter 2.1.14 --- Design of the S-Boxes --- p.48Chapter 3. --- rf part --- p.50Chapter 3.1 --- Power On --- p.51Chapter 3.2 --- Power Induction --- p.52Chapter 3.3 --- Limiter and Regulator --- p.54Chapter 3.4 --- Demodulation --- p.56Chapter 3.5 --- Modulation --- p.57Chapter 4. --- asynchronous circuit theory --- p.58Chapter 4.1 --- Potential Problem of Classical Asynchronous Pipeline --- p.58Chapter 4.2 --- The New Handshake Cell --- p.58Chapter 4.3 --- The Modified Asynchronous Pipeline Architecture --- p.60Chapter 4.4 --- Asynchronous Circuit Comparison --- p.65Chapter 5 --- implementation --- p.67Chapter 5.1 --- DES Implementation --- p.67Chapter 5.1.1 --- Power estimation of the asynchronous DES --- p.70Chapter 5.1.2 --- Modified Circuit --- p.73Type One --- p.73Type two --- p.76Chapter 5.1.3 --- Interface --- p.79Chapter 5.1.4 --- Shift Unit --- p.80Chapter 5.1.5 --- Multiplexer Unit --- p.82Chapter 5.1.6 --- Compression Unit --- p.83Chapter 5.1.7 --- Expansion Unit --- p.84Chapter 5.1.8 --- Xor Unit --- p.85Chapter 5.1.9 --- S_box Unit --- p.86Chapter 5.1.10 --- P-box unit --- p.88Chapter 5.1.11 --- Latch unit --- p.89Chapter 5.1.12 --- Transmission Unit --- p.90Chapter 5.2 --- Floor Plan Design --- p.90Chapter 6. --- result and discussion --- p.93Chapter 6.1 --- Simulation Result --- p.93Chapter 6.2 --- Measurement --- p.97Chapter 6.3 --- Comparison --- p.101Chapter 6.4 --- Conclusion --- p.101Chapter 7. --- reference --- p.104Chapter 8. --- appendix --- p.110Chapter 8.1 --- RF Part Implementation --- p.110Chapter 8.1.1 --- Full wave rectifying circuit --- p.110Chapter 8.1.2 --- "Limiting Circuit," --- p.111Chapter 8.1.3 --- Regulator circuit --- p.113Chapter 8.1.4 --- Demodulation circuit --- p.113Chapter 8.1.5 --- Simulation of the RF part --- p.115Chapter 8.2 --- New Technology for Designing a RF Interface --- p.117Chapter 8.2 --- Block Diagrams --- p.11
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