Title

Witness-Attested Mesh Blockchain Design for Post-Quantum-Secure V2X Forensics

DGIST Authors

Yujin Seo ; Young-Sik Kim

Advisor

김영식

Issued Date

2026

Awarded Date

2026-08-01

Type

Thesis

Description

V2X Security, Vehicular Blockchain, Post-Quantum Cryptography, Distributed Integrity Verification, Vehicle Forensics

Table Of Contents

List of Contents
Abstract i
List of contents iii
List of tables v
List of figures vi

Ⅰ. INTRODUCTION 1

ⅠI. Related Work 4

ⅠII. System Model and. Threat Model 6
3.1. System Model 6
3.2. Off-Chain Storage and Forensic Privacy 10
3.3. Threat Model 12

ⅠV. Mesh-Chain Design 15
4.1. Fast-Path 15
4.2. Anchor-Path 19
4.3. Fork Detection and Resolution 22

V. Security Analysis 24
5.1. Witness Unforgeability 24
5.2. Relay Attack Resistance 25
5.3. Diversity Constraint Integrity 26
5.4. Anchor Integrity 27
5.5. Chain Integrity 28
5.6. Fork Resolution Completeness 29
5.7. Post-Quantum Completeness 30

VI. Experiment 31
6.1. Experiment Setup 31
6.2. RQ1:Scalability 34
6.3. RQ2:Comparative Evaluation 37
6.4. RQ3:Attack Robustness 40
6.5. RQ4:PQC Overhead 44
6.6. PQ5:Anchor Finality 46
6.7. PQ6:Fork Behavior 47
6.8. PQ7:Network Partition Tolerance 48

VII. Discussion 50
7.1. Design Trade-offs 50
7.2. Limitations 52
7.3. Future Work 54

Ⅷ. Conclusion 55

Appendix 56
References 73

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/60812
http://dgist.dcollection.net/common/orgView/200001006783

DOI

10.22677/THESIS.200001006783

Degree

Master

Department

Department of Electrical Engineering and Computer Science

Publisher

DGIST

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