Blockchain Technology and Emerging Technologies: Second EAI International Conference, BlockTEA 2022, Virtual Event, November 21-22, 2022, Proceedings

Description

This book constitutes the refereed proceedings of the Second EAI International Conference on Blockchain Technology and Emerging Technologies, BlockTEA 2022, held in Virtual Event, during November 21-22, 2022.  The 10 full papers included in this book were carefully reviewed and selected from 28 submissions. They were organized in topical sections as follows: answer set programming; functional programming; Smart contract, Privacy protection, NFT and Machine learning Preface Organization Contents Smart Contract ID-Based Self-encryption via Hyperledger Fabric Based Smart Contract 1 Introduction 2 State of the Art 3 Background 4 ID-Based Self-encryption 4.1 Integrating Identity into the Encryption 4.2 Connecting the Encryption Algorithm and the Local Application 4.3 Smart Contract 4.4 Self-encryption Work Flow in a Blockchain-IPFS Based Network 5 Results 5.1 Performance Analysis 5.2 Benefits Overview 6 Discussion 7 Conclusion References Scalable Smart Contracts for Linear Regression Algorithm 1 Introduction and Motivation 2 Problem Definition 3 Our Contribution 4 Literature Review 5 Methodology 6 Experimental Setup 7 Performance Evaluation 8 Computational Analysis 9 Limitation and Challenges 10 Conclusion References Combining ID's, Attributes, and Policies in Hyperledger Fabric 1 Introduction 2 Related Work 3 Contribution 4 Background 4.1 Hyperledger Fabric 4.2 Secure Access Control 4.3 Certificate Authorities (CAs) 4.4 Membership Service Providers (MSPs) 4.5 Generating Certificates 5 Proposed Implementation 5.1 Combining Attributes 5.2 Combining Policies 5.3 Combining ID's 5.4 Workflow in a Blockchain-IPFS-Based Network 6 Results 7 Discussion 8 Conclusions References A Secure Microgrid Power Transaction Scheme Based on Hyperledger Fabric 1 Introduction 1.1 Related Works 1.2 Contribution 2 Preliminary 2.1 Hyperledger Fabric 2.2 Blockchain Oracle 2.3 Proof of Work 3 Smart Microgrid Power Trading System Based on Consortium Blockchain 3.1 User and Node Definitions 3.2 Smart Contract and Blockchain Oracle Design 3.3 PCDA Algorithm 4 Distributed Power Transaction Process 4.1 Publish Bid Order 4.2 Bid Matching and Contract Signing 4.3 Transaction Settlement 5 System Analysis 5.1 System Security Analysis 5.2 System Feasibility Analysis 6 Conclusions References Privacy Protection An Outsourced Multi-authority Attribute-Based Encryption for Privacy Protection with Dynamicity and Audit 1 Introduction 1.1 Our Contribution 1.2 Paper Organization 2 Related Work 3 Preliminaries 3.1 Access Structures 3.2 Lagrange Interpolation 3.3 Bilinear Pairings 3.4 The Decisional Bilinear Diffie-Hellman Problem (DBDH) 3.5 Trapdoor Function 4 Syntax and Security 4.1 Security Assumptions 4.2 Security Model 5 Our Construction 5.1 System Initialization 5.2 Execution 5.3 Encryption and Decryption 5.4 Audit 5.5 Decryption by User 6 Security Analysis 7 Comparisons 7.1 Feature and Security Comparisons 7.2 Computational Analysis 7.3 Storage Overhead 8 Conclusion References A Privacy-Preserving and Auditable Scheme for Interfacing Public Blockchain with Consortium Blockchain 1 Introduction 1.1 Related Work 1.2 Our Contribution: Cross-Chain with Privacy and Auditability 2 Preliminaries 2.1 Mathematical Backgrounds 2.2 Threshold Signature 3 System Model 3.1 System Architecture 3.2 Threats 4 Our Proposed Scheme 4.1 Overview 4.2 Detailed Description 4.3 Security Discussion 5 Conclusion References Data Cooperatives for Trusted News Sharing in Social Media 1 Introduction and Problem Motivation 1.1 Data Cooperatives 1.2 Fake News 1.3 Why Blockchain for Data Cooperatives? 1.4 Our Contributions 1.5 Outline 2 Background and Related Work 3 System Architecture 3.1 Participants and Their Roles on the Blockchain 3.2 Smart Contract 3.3 Event Flows 3.4 Reputation System 3.5 Incentive Structure 4 Experimental Setup and Implementation 5 Results and Discussion 5.1 Security Analysis 6 Conclusion and Future Work References NFT and Machine Learning A Novel Fast Recovery Method for HT Tamper in Embedded Processor 1 Introduction 2 The Proposed Recovery Method 2.1 The Design and Implement of GPRs Backup Unit 2.2 The Design and Implement of PC Rollback Unit 3 Experimental Results 4 Conclusion References MIA-Leak: Exploring Membership Inference Attacks in Federated Learning Systems 1 Introduction 2 Related Work 2.1 Attacks in Federated Learning 2.2 Membership Inference 2.3 Defense Proposals 3 Membership Inference Attacks in Federated Learning 3.1 Threat Models 3.2 Case1: Class-Level Attack 3.3 Case2: User-Level Attack 4 Experimental Evaluation 4.1 Datasets and Experimental Setup 4.2 Effectiveness of Data Augmentation 4.3 Evaluation of Class-Level Attack 4.4 Evaluation of User-Level Attack 5 Summary and Future Work References SoK: Can NFTs Solve the Economic Problems of Countries with Ancient Heritage? Egypt as a Case Study 1 Countries and Cryptocurrencies 2 Countries and NFTs 3 NFTs Profitable Uses 4 The Egyptian Case 5 Issues, Challenges, and Design Decisions 6 NFTs.. The Concept, and Technical Details 6.1 The Conceptual Meaning of an NFT 6.2 Implementing NFTs in Different Smart Contract Blockchains 6.3 Implementing NFTs in Bitcoin 7 Conclusions and Prospectives Appendix A References Author Index