A Simple Public-Key Cryptosystem with a Double Trapdoor Decryption Mechanism and Its Applications 1st edition by Emmanuel Bresson, Dario Catalano, David Pointcheval – Ebook PDF Instant Download/Delivery. 3540205920, 978-3540205920
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Product details:
ISBN 10: 3540205920
ISBN 13: 978-3540205920
Author: Emmanuel Bresson, Dario Catalano, David Pointcheval
At Eurocrypt ‘02 Cramer and Shoup [7] proposed a general paradigm to construct practical public-key cryptosystems secure against adaptive chosen-ciphertext attacks as well as several concrete examples. Among the others they presented a variant of Paillier’s [21] scheme achieving such a strong security requirement and for which two, independent, decryption mechanisms are allowed. In this paper we revisit such scheme and show that by considering a different subgroup, one can obtain a different scheme (whose security can be proved with respect to a different mathematical assumption) that allows for interesting applications. In particular we show how to construct a perfectly hiding commitment schemes that allows for an on-line / off-line efficiency tradeoff. The scheme is computationally binding under the assumption that factoring is hard, thus improving on the previous construction by Catalano et al. [5] whose binding property was based on the assumption that inverting RSA[N,N] (i.e. RSA with the public exponent set to N) is hard.
A Simple Public-Key Cryptosystem with a Double Trapdoor Decryption Mechanism and Its Applications 1st Table of contents:
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Introduction
- 1.1 Motivation and Background
- 1.2 Overview of Public-Key Cryptosystems
- 1.3 Problem Statement and Objectives
- 1.4 Main Contributions
- 1.5 Structure of the Paper
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Preliminaries
- 2.1 Public-Key Cryptography
- 2.1.1 Key Concepts in Public-Key Cryptography
- 2.1.2 Existing Public-Key Cryptosystems
- 2.2 Trapdoor Functions and Decryption Mechanisms
- 2.2.1 The Concept of Trapdoor Functions
- 2.2.2 Single vs. Double Trapdoor Mechanisms
- 2.3 Security Assumptions and Models
- 2.3.1 Semantic Security
- 2.3.2 Computational Assumptions
- 2.3.3 Attack Models
- 2.1 Public-Key Cryptography
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The Double Trapdoor Cryptosystem
- 3.1 Cryptosystem Overview
- 3.1.1 Key Generation
- 3.1.2 Encryption Process
- 3.1.3 Decryption Process
- 3.2 Double Trapdoor Mechanism
- 3.2.1 Description of the Double Trapdoor Structure
- 3.2.2 Advantages of the Double Trapdoor Mechanism
- 3.3 Security Properties of the Cryptosystem
- 3.3.1 Resistance to Common Attacks
- 3.3.2 Security Analysis of the Double Trapdoor Mechanism
- 3.4 Computational Complexity of the System
- 3.1 Cryptosystem Overview
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Applications of the Cryptosystem
- 4.1 Digital Signatures and Authentication
- 4.2 Secure Communication Protocols
- 4.2.1 Encrypted Messaging Systems
- 4.2.2 Secure Email Solutions
- 4.3 Confidentiality in Cloud Computing
- 4.3.1 Data Storage and Access Control
- 4.3.2 Protecting Data Privacy in Cloud Environments
- 4.4 Secure Multi-party Computation
- 4.4.1 Privacy-Preserving Computations Using the Cryptosystem
- 4.5 Applications in Blockchain and Distributed Ledgers
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Implementation Details
- 5.1 Algorithmic Design
- 5.1.1 Efficient Algorithms for Key Generation, Encryption, and Decryption
- 5.2 Optimization of the Cryptosystem for Real-world Use
- 5.2.1 Performance Considerations
- 5.2.2 Implementation Challenges and Solutions
- 5.3 Experimental Results and Benchmarks
- 5.1 Algorithmic Design
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Advanced Topics
- 6.1 Hybrid Cryptosystems
- 6.1.1 Combining the Double Trapdoor Cryptosystem with Other Cryptosystems
- 6.1.2 Enhancing Security through Hybrid Approaches
- 6.2 Integration with Quantum Cryptography
- 6.2.1 Post-Quantum Security of the Cryptosystem
- 6.2.2 Quantum Resilience of the Double Trapdoor Mechanism
- 6.3 Zero-Knowledge Proofs and the Double Trapdoor
- 6.3.1 Efficient Zero-Knowledge Proof Protocols Based on the Cryptosystem
- 6.1 Hybrid Cryptosystems
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Comparative Analysis
- 7.1 Comparison with Existing Public-Key Systems
- 7.1.1 RSA and ECC: Strengths and Weaknesses
- 7.1.2 Advantages of the Double Trapdoor Cryptosystem
- 7.2 Evaluating Security vs. Efficiency
- 7.2.1 Trade-offs in the Cryptosystem’s Design
- 7.2.2 Real-World Performance Benchmarks
- 7.3 Applications Comparison: Suitability for Different Use Cases
- 7.1 Comparison with Existing Public-Key Systems
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Challenges and Future Work
- 8.1 Scalability Issues in Large-Scale Systems
- 8.2 Theoretical Limitations of the Double Trapdoor Mechanism
- 8.3 Further Optimizations for Practical Use
- 8.4 Open Problems in Cryptography and Future Research Directions
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Conclusion
- 9.1 Summary of Key Findings
- 9.2 Contributions to Public-Key Cryptography
- 9.3 Future Prospects and Potential Impacts of the Cryptosystem
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