Aug 2026· International Journal of Digital Crime and Forensics· Vol 18, pp. 1-16· 0 citations
TL;DR
This framework provides forensic-ready support for secure electronic accounting voucher management and shows that on-chain storage overhead was reduced, audit latency reached 12.4 s under a workload of 5,000 transactions per second, and no raw data were exposed throughout the process.
Abstract
Electronic accounting voucher deposits and cybersecurity audits face a contradiction between resistance to evidence tampering and data privacy protection. Using blockchain technology as a basis, the authors propose a solution framework that addresses both concerns. Under a dual-layer hash mapping architecture, original accounting vouchers are stored off-chain via the InterPlanetary File System, and digital fingerprints are anchored on the immutable ledger. Smart contract engines enforce a multi-signature state machine to ensure accounting voucher traceability from generation to archiving. Paillier homomorphic encryption supports direct computation on ciphertext, enabling continuous consistency checks between accounts and accounting vouchers without decrypting raw data. Experimental results showed that on-chain storage overhead was reduced by 99.08%, audit latency reached 12.4 s under a workload of 5,000 transactions per second, and no raw data were exposed throughout the process. This framework provides forensic-ready support for secure electronic accounting voucher management.
Credential fraud in academic institutions has emerged as a serious global concern, undermining the integrity of educational qualifications and professional trust. Traditional paper-based and centralised digital verification systems are susceptible to forgery, data tampering, and administrative delays. This paper proposes a Secure and Efficient Blockchain-Based Academic Record Verification System (SEBARVS) that leverages a private blockchain architecture combined with SHA-256 hash-based integrity mechanisms to prevent credential fraud. Rather than storing complete academic records on the blockchain, the proposed system stores only the cryptographic hash of each record, ensuring both data privacy and tamper-proofing. Authorised institutions act as permissioned nodes within the network, enabling real-time, decentralised verification without relying on any single trusted authority. The workflow encompasses record generation, hash computation, on-chain storage, and a streamlined verification algorithm. Experimental evaluation demonstrates that the proposed system achieves verification within 2 to 5 seconds, eliminates single points of failure, and significantly reduces operational costs relative to traditional approaches. Comparative analysis against conventional systems and generic blockchain implementations confirms the superiority of the proposed approach in terms of security, efficiency, scalability, and privacy. The system offers a practical, deployment-ready framework for universities, certification bodies, and employers worldwide.
Ritika Bansal· International Journal of Adv...· 0 citations
The findings indicate that unifying adaptive privacy preservation with decentralized integrity auditing yields a more complete cloud-security posture than either mechanism alone, and the paper outlines the empirical validation, including full-scale testbed experiments, required before deployment.
Jayakumar D, M. Ramamoorthy· International journal of com...· 0 citations
In blockchain-based medical data sharing systems, sensitive medical data such as electronic health records and diagnostic reports require secure sharing with fine-grained access control and accountable usage. Existing attribute-based encryption (ABE) schemes lack mechanisms for auditing data usage after decryption, leaving data misuse undetectable and unaccountable. To address this limitation, this paper proposes Commit-HABE, a commitment-based auditable ABE scheme. Users submit their attribute sets along with signed usage commitments prior to data access, which are immutably recorded on a consortium blockchain. In addition, a traceable watermark cryptographically linked to each commitment can be embedded into the decrypted data, enabling post-hoc leakage detection and attribution. Security analysis indicates that Commit-HABE achieves data confidentiality, commitment non-repudiation, and traceability. We implement Commit-HABE alongside three representative CP-ABE schemes and conduct a performance evaluation. Experimental results demonstrate that Commit-HABE reduces encryption time by up to 29.5% compared to existing schemes and maintains comparable decryption performance. The commitment overhead is negligible $(\approx 0.0016 \text{ms})$, watermark embedding scales linearly from 0.28 ms to 6.10 ms, and the blockchain system sustains 100% success under up to 100 queries per second.
Ke-Fei Li, Xiangwei Meng, Cangming Liang et al.· Fall Joint Computer Conferen...· 0 citations
Security and comparative analysis demonstrate that the described framework can provide better privacy protection and fine-grained access control, resist collusion and replay attacks, and is more advantageous than existing blockchain-based models of electronic evidence sharing.
F. K. Zaidan, Nuha Salim Mohammed, Ibtesam Jomaa Hawi et al.· Al-Noor Journal of Engineeri...· 0 citations
Blockchain technology, as a representative paradigm of distributed ledgers, has been widely applied in cross-border trade and finance. However, in cross-border trade, issues such as privacy leakage, forgery, and data misuse during document data sharing hinder the receiving parties from verifying the authenticity of shared data. To address these problems, this paper proposes a decentralized and trustworthy data verification scheme based on the PLONK protocol in zk-SNARKs. Leveraging PLONK's universal trusted setup, the proposed system performs off-chain computation and on-chain verification. Sensitive trade data are processed with the Poseidon hash to generate commitments, which are then recorded on the blockchain for integrity verification. Arithmetic circuits are constructed to ensure that the committed data satisfy pre-defined validity constraints. Meanwhile, trusted institutions conduct off-chain audits to realize a minimal disclosure mechanism, ensuring privacy-preserving verification. Based on an analysis of verification requirements in certificate-of-origin scenarios, the system architecture and arithmetic circuits are designed and implemented to achieve secure, privacy-preserving, and verifiable data sharing in cross-border trade.
The increasing digitization of modern society has led to a growing volume of digital information---such as emails, photos, videos, and electronic records---being presented as evidence in legal proceedings. However, traditional storage systems are costly, slow, and prone to server failures. To address these challenges, we propose a system leveraging blockchain and IPFS to store electronic evidence securely and reliably. Existing Layer 1 blockchain-based systems face three key limitations: (1) scalability issues with slow throughput and high costs under heavy traffic; (2) privacy risks due to public visibility of transaction data; and (3) impracticality of on-chain storage for large evidentiary files. Our system utilizes Polygon, a faster and more cost-effective Layer 2 blockchain, combined with IPFS for off-chain storage of documents, images, and videos. Each file is assigned a cryptographic hash stored on-chain to ensure integrity and tamper resistance. Smart contracts enforce role-based access control, restricting actions to authorized participants such as police officers, lawyers, and judges. Experimental evaluation with 10,000 transactions achieved approximately 14.29 TPS on modest hardware, with the potential for significantly higher throughput in optimized environments. This demonstrates the system's viability for both high-volume urban courts and resource-constrained rural settings. Overall, the proposed solution offers enhanced security, controlled access, reduced storage costs, and improved efficiency for digital evidence management in judicial systems.
