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Content
- Intro
- Preface
- Organization
- Table of Contents
- Invited Talks
- On Known and New Differentially Uniform Functions
- Introduction
- The Know AB, APN and Differentially 4-Uniform Functions and Their Respective Drawbacks
- AB and APN Functions
- A Way of Constructing Differentially Uniform Permutations
- Reference
- Symmetric Key Cryptography
- New Impossible Differential Attacks of Reduced-Round Camellia-192 and Camellia-256
- Introduction
- Preliminaries
- Notations
- The Camellia Algorithm
- Properties and 6-Round Impossible Differentials of Camellia with FL/FL-1 Functions
- Impossible Differential Attacks on Camellia with FL/FL-1 Functions and Whitening
- Impossible Differential Attack on 11-Round Camellia-256
- Impossible Differential Attack on 10-Round Camellia-192
- Impossible Differential Cryptanalysis of 15-Round Camellia-256 without FL/FL-1 Layers and Whitening
- Conclusion
- References
- Results on the Immunity of Boolean Functions against Probabilistic Algebraic Attacks
- Introduction
- Preliminary
- Probabilistic Algebraic Attacks
- Time Complexity
- Data Complexity
- Validity
- Algebraic Immunity Distance
- Bounds on Algebraic Immunity Distance
- k-Error Algebraic Immunity
- Conclusion
- References
- Finding More Boolean Functions with Maximum Algebraic Immunity Based on Univariate Polynomial Representation
- Introduction
- Preliminaries
- Deciding Boolean Functions Having Maximum AI under Univariate Polynomial Representation
- Finding MAI Boolean Functions under Univariate Polynomial Representation
- Analysis of Algebraic Degree and Nonlinearity
- Conclusion
- References
- Improving the Algorithm 2 in Multidimensional Linear Cryptanalysis
- Introduction
- Notations and Background
- Algorithm 2 of Multidimensional Linear Cryptanalysis
- Construction of Multidimensional Probability Distribution
- Brief Analysis on Algorithm 2 of the Full Biryukov's Model and Hermelin's Model
- Efficient Computation of Distillation Phase of Extended Algorithm 2 of Matsui
- Case 1 and Method 1
- Case 2 and Method 2
- Results on Cryptanalysis of Serpent
- Experimental Results on 5-Round Serpent
- Cryptanalysis of 11-Round and 12-Round Reduced Serpent
- Conclusion
- References
- State Convergence in the Initialisation of Stream Ciphers
- Introduction
- Background and Notation
- Case Studies
- A5/1 Stream Cipher
- Mixer
- Discussion
- Conclusion
- References
- On Maximum Differential Probability of Generalized Feistel
- Introduction
- Preliminaries
- Type-2 GFS and Its Generalization
- Maximum Differential Probability
- MDP Bounding Algorithm
- Overview
- Ordered Sum
- Details of Bounding Algorithm
- Optimized Version
- Experimental Results
- Results for Type-2
- Results for Type-2i
- Conclusion
- References
- Double SP-Functions: Enhanced Generalized Feistel Networks
- Introduction
- Background
- Contributions and Outline
- Equivalence of Differential and Linear Truncated Trails
- Truncated Differential Trails and Constraints
- Truncated Linear Trails and Constraints
- Active Functions and Equivalence for Type-I GFNs
- Active Functions and Equivalence for Type-II GFNs
- Bounds for Active Functions
- Some Truncated Differential Trails
- Differentially Active Functions of Type-I GFNs
- Differentially Active Functions in Type-II GFNs
- Comparative Efficiency of GFNs
- Converting Active Functions to Active S-Boxes
- GFNs: Double SP-Functions vs Single SP-Functions
- Conclusions
- References
- Algebraic Techniques in Differential Cryptanalysis Revisited
- Introduction
- Description of Albrecht's Differential-Algebraic Attack
- Inapplicability of Albrecht et al.'s Attacks
- Inapplicability of Attack C
- Inapplicability of Attack B to PRESENT
- New Differential-Algebraic Attacks
- Attack 1 for the PRESENT Block Cipher
- Attack 2 for the PRESENT Block Cipher
- Conclusion
- References
- Hash Functions
- Faster and Smoother - VSH Revisited
- Introduction
- Very Smooth Hash Algorithm
- Security
- A Variant without Modular Squaring
- The k-Sum Problem and the Tree Algorithm
- Security of Faster VSH
- A Variant without Modular Reduction
- Experimental Results
- Choice of the List Elements
- Minimal Distance of Colliding Inputs
- On Provable Security
- Conclusions
- References
- Cryptanalysis of the Compression Function ofSIMD
- Introduction
- Notations and Description of SIMD
- Notations
- Description of SIMD
- The Free-Start Near Collision Attack on the Reduced SIMD-256
- Constructing the Specific Differential Path for 20-Step SIMD-256
- Message/IV Modification
- Free-Start Near Collision and Distinguishing Attack on SIMD-512
- Free-Start Near Collision Attack for the Compression Function of 24-Step SIMD-512
- A Differential Distinguisher for the Compression Function of Full SIMD-512
- Conclusions
- References
- Protocols
- Electronic Cash with Anonymous User Suspension
- Introduction
- Preliminaries
- Security Definition
- Syntax
- Security Requirements
- Our System
- High Level Description
- Construction Details
- Efficiency Analysis
- Discussions
- Incorporating Tracing Authority and Open Authority
- Managing the Size of SUL and the Bank's Database
- Conclusion
- References
- T-Robust Scalable Group Key Exchange Protocol with O(log n) Complexity
- Introduction
- Preliminary
- The Security Assumptions, and Model of GKE
- Notation and Assumptions on GKE
- Background
- Robust GKE with O(log n) complexity
- Intuition
- Cross-Help GKE (CH-GKE)
- Generalized CH-GKE
- Security of CH-GKE
- T-Robust GKE with O(log n) Complexity
- Comparison
- Conclusions
- References
- Application-Binding Protocol in the User Centric Smart Card Ownership Model
- Introduction
- Application Sharing Mechanism
- Smart Card Firewall Mechanism
- User Centric Smart Card Firewall
- Applications-Binding Protocol (ABP)
- Application-Binding
- Threat Model
- Requirements for the Protocol
- Enrolment Process
- Proposed Application-Binding Protocol
- Proposed Protocol Analysis
- Analytical Analysis
- Protocol Verification by CasperFDR
- Practical Implementation
- Conclusion and Future Research Direction
- Acknowledgements
- References
- Access Control and Security
- Security in Depth through Smart Space Cascades
- Introduction
- Related Work
- Access Control for Smart Space Cascades
- Background: ISO/IEC 10181-3
- Targets in Practice
- Dependent Targets
- Access Control Enforcement Functions
- Access Control Decision Functions
- Smart Space Interactions
- Decentralised Requests
- Negotiating Positive Outcomes
- Smart Space Sign on
- Protective Layer Analysis
- Applying the Method
- Conclusion
- References
- GeoEnc: Geometric Area Based Keys andPolicies in Functional Encryption Systems
- Introduction
- Our Results
- Related Work
- Organization
- Preliminaries and Blocks
- Geometric Polygon
- Bilinear Maps in Composite Order Group
- Complexity Assumptions
- Framework of GeoEnc Scheme
- GeoEncLine Scheme
- Syntax of GeoEncLine
- Security Model of GeoEncLine
- Construction of GeoEncLine
- Correctness and Consistency
- Security Analysis
- Practical Coordination Evaluation
- Extension to GeoEncHull Scheme
- Concluding Remarks
- References
- An Efficient Rational Secret Sharing Scheme Based on the Chinese Remainder Theorem
- Introduction
- Preliminaries
- Our Results
- Comparison to Fuchsbauer et al.'s Scheme
- Definitions and Background
- Secret Sharing
- Notions of Game-Theoretic Equilibria
- Assumptions on the Utility Functions
- Our Protocol for t-out-of-n Rational Secret Sharing
- Initial Share Phase
- Secret Reconstruction Phase
- Security of our Rational SSS
- Conclusion
- References
- DMIPS - Defensive Mechanism against IP Spoofing
- Introduction
- Related Work
- DMIPS Scheme
- Inside the AS
- Outside the AS
- Attack Scenario
- Inside the AS
- Outside the AS
- Evaluation
- Inside the AS
- Outside the AS
- Conclusion
- References
- Public Key Cryptography
- Provably Secure Key Assignment Schemes from Factoring
- Introduction
- Our Contributions
- Organization
- Preliminaries
- Factoring Assumption
- Key Assignment Schemes
- A Basic Scheme
- The FP Scheme
- The FP Scheme for a Single Chain
- The FP Scheme for General Posets
- A Scheme with Faster Key Derivation
- Efficiency Considerations
- Concluding Remarks
- References
- Efficient CCA-Secure CDH Based KEM Balanced between Ciphertext and Key
- Introduction
- Our Contributions
- Preliminaries
- Key Encapsulation Mechanisms
- Diffie-Hellman Assumptions
- Goldreich-Levin Hardcore Function
- The New Scheme
- Security Proof
- Efficiency Analysis
- Conclusion
- References
- Generic Construction of Strongly Secure Timed-Release Public-Key Encryption
- Introduction
- Background
- Our Contributions
- Definitions
- Components
- Timed-Release Public-Key Encryption
- IND-CTCA Security
- IND-SCCA-TS Security
- Construction of Timed-Release Public-Key Encryption
- IBE-then-PKE Construction
- IND-CTCA Security
- IND-SCCA-TS Security
- Conclusion
- References
- Identity-Based Server-Aided Decryption
- Introduction
- Related Works
- Contribution
- Definitions
- Pairings and Related Intractability Assumption
- Building Blocks
- Framework of ID-Based Server-Aided Decryption
- Security of ID-Based Server-Aided Decryption
- CCA-Secure ID-Based Server-Aided Decryption scheme from Gentry's IBE
- Construction
- Security Analysis
- CCA-Secure ID-Based Server-Aided Decryption scheme from Boneh-Franklin's IBE
- Construction
- Security Analysis
- Comparison
- Conclusion
- References
- A Generic Variant of NIST's KAS2 Key Agreement Protocol
- Introduction
- A Generic Protocol
- Security Model
- The RSA Setting
- Comparisons
- Security Argument
- The Discrete Log Setting
- Comparisons
- Security Argument
- Miscellaneous Notes
- Hybrid Protocol
- KAS1
- Key Reusage
- References
- A Single Key Pair is Adequate for the Zheng Signcryption
- Introduction
- Overview of the Zheng Signcryption Scheme
- Security Model
- Syntax of Signcryption
- Definition of Confidentiality
- Definition of Unforgeability
- Assumptions and Primitives
- Problems and Assumptions
- One-Time Symmetric Key Encryption
- One-Way Hash Functions
- Security Proofs
- Proof of Unforgeability
- Proof of Confidentiality
- Relationships with Proofs by Baek, Steinfeld and Zheng
- References
- Towards Public Key Encryption Scheme Supporting Equality Test with Fine-Grained Authorization
- Introduction
- Related Work
- Our Contribution
- Organization
- Formulation of FG-PKEET
- Description of FG-PKEET
- The Security Model
- OW-CCA Security against a Type-I Adversary
- Fine-Grained Authorization Property
- IND-CCA Security against a Type-II Adversary
- A New FG-PKEET Cryptosystem
- The Public Key Encryption Scheme
- The Token Generation Algorithm
- The Equality Test Algorithm
- Comprehensive Security Analysis
- Preliminary
- Proof Results
- Potential Vulnerability and Enhancement
- Conclusion
- References
- Posters
- Lattice-Based Completely Non-malleable PKE in the Standard Model (Poster)
- Introduction
- Contributions of the Paper
- Background and Definitions
- A Construction Based on LWE Problem
- Correctness and Security
- Conclusion and Open Problems
- References
- Compliance or Security, What Cost? (Poster)
- Introduction
- Misaligned Incentives: Audit and the Failure to Determine Risk
- Patching and Validation
- Conclusion
- References
- Preimage Attacks on Full-ARIRANG (Poster)
- Introduction
- Description of ARIRANG
- Preimage Attacks on Full ARIRANG-256/-512
- Chunk Separation
- Preimage Attacks on ARIRANG-256
- Preimage Attacks on ARIRANG-512
- Concluding Remarks
- References
- Finding Collisions for Reduced Luffa-256 v2 (Poster)
- Introduction
- Specification of Luffa-256 v2
- Chaining and Round Function
- Non-linear Permutation
- The Collision Attack on 4-Step Luffa-256 v2
- The Differential Path
- Message Modification
- Conclusion
- References
- Improved Security Analysis of Fugue-256 (Poster)
- Fugue-256 Hash Function
- Integral Distinguisher for 16.5 Rounds of G
- Improved Meet-in-the-Middle Preimage Attack on F-256
- Concluding Remarks
- References
- Improved Meet-in-the-Middle Cryptanalysis ofKTANTAN (Poster)
- Introduction
- Developments in MITM Attacks
- Meet-in-the-Middle Cryptanalysis of KTANTAN
- The Previous Meet-in-the-Middle Attack
- New Experimental Observations on the Attack
- Low Complexity Implementation of the Attack
- More General MITM Attacks on KTANTAN Family
- The Observations and Search
- The Attack with Splice-and-Cut and Indirect-Partial-Matching
- Conclusions
- References
- Toward Dynamic Attribute-Based Signcryption (Poster)
- Introduction
- Attribute-Based Signcryption (ABSC)
- Encrypted Storage System
- Our Approach: Dynamic ABSC
- System Operations of DABSC
- Conclusion and toward the Concrete Construction of DABSC Scheme
- References
- A Verifiable Distributed Oblivious Transfer Protocol
- Introduction
- Background
- Distributed Oblivious Transfer Protocol
- Verifiable Secret Sharing Scheme
- Error-correcting Code Decoding Scheme
- Our Model
- Communication Model
- Adversary Model
- Proposed Protocol
- Security of the Protocol
- References
- Impracticality of Efficient PVSS in Real Life Security Standard (Poster)
- Introduction
- Specification of an Important Proof in the Two PVSS Schemes
- RSA Key in Real-Life Cryptographic Protocols
- Intolerable Cost of the General Specification, Making the PVSS Scheme Impractical in Real Life
- Conclusion
- References
- Electromagnetic Analysis Enhancement with Signal Processing Techniques (Poster)
- Introduction
- Preliminaries
- EMA with Signal Processing
- Conclusions
- References
- Author Index
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