Digital identity verification is a critical security requirement in modern banking systems, where Know Your Customer (KYC) procedures are mandated to mitigate fraud and ensure regulatory compliance. Existing KYC solutions, such as blockchain-based and decentralized identity frameworks, are not suitable for long-term deployment in emerging 6G-enabled banking environments because they primarily rely on classical cryptographic primitives and architectural abstractions, which make them vulnerable to quantum attacks. Additionally, repeating KYC verification across institutions increases the vulnerability of sensitive customer data and creates operational inefficiencies. In this work, we present a KYC-as-a-Service-based quantum-resistant security protocol for digital identity verification, specifically designed for 6G-enabled financial applications. While a distributed ledger is only used as a verifiable trust anchor for managing KYC credentials and revocation status, the protocol uses encryption and post-quantum digital signatures to guarantee long-term security. The proposed method minimizes sensitive data exposure, which enables interoperable KYC reuse across many institutions, and is still practical for large-scale and low-latency banking systems. The proposed protocol supports scalable, privacy-preserving, and real-time identity verification across banking institutions and third-party KYC service providers.
A. K. Pandey, Debnath Ghosh, Mohammad S. Obaidat et al.· International Conference on...· 0 citations
A scalable and adaptable paradigm for implementing fine-grained authorization in distributed systems, such as smart healthcare, is Attribute-Based Access Control (ABAC). ABAC offers dynamic data sharing capabilities, which are crucial for modern healthcare systems, by allowing access decisions based on user attributes. ABAC is frequently combined with cryptographic techniques to further improve the security of data transfer and protect private medical records in untrusted settings. However, it is still difficult to ensure both effective management of massive amounts of medical data and robust security against new quantum threats. In this paper, we present a hybrid quantum-safe ABAC framework for secure smart healthcare data sharing. The proposed technique enables secure and efficient access control over encrypted medical records by combining fine-grained attribute-based policy enforcement with lightweight cryptographic primitives. The proposed scheme is appropriate for practical smart healthcare settings, as it supports efficient access verification and dynamic attribute management. Security analysis shows that the framework maintains data secrecy and access control correctness while offering resistance against quantum adversaries. Performance evaluation shows that the proposed framework achieves lower computational, communication, and storage overhead compared to existing approaches. Thus, the proposed framework integrates fine-grained attribute-based access control with quantum-safe communication techniques and blockchain-assisted attribute management in order to enable secure, efficient, and scalable data sharing in smart healthcare systems.
