Blockchain-Based Self-Sovereign Identity for Digital Security

SSI is a quickly appearing paradigm to secure and user-sovereign digital identity management. Nevertheless, existing implementations of SSI still have privacyprotection, interoperability, anti-fraud, and anti-cryptographic resiliency weaknesses. To tackle these issues, this paper presents a proposal of an AI-enhanced, blockchain-based protocol incorporating the use of Zero Knowledge Proofs (ZKP), Multiple Layer Decentralization (MLD) as well as quantumresistant cryptography. The framework uses AI to do dynamic Identity verification and real-time fraud detection, risk-based authentication and provides great advantage to traditional SSI models. The system proposed will utilize ZKPs to provide its users with privacy-preserving authentication so that one can confirm attributes but not reveal sensitive personal data. Multi-layer decentralized identity validation structure is developed to enhance the level of trust, reduce dependence on centralized authorities and enhances/supported interoperability across homogeneous systems. Ancillary, postquantum cryptographic schemes will also be incorporated to protect identities by mitigating the possible quantum computing attacks. Experimental evidence shows that our framework significantly enhances the accuracy of verification, the authentication latency and increases security in comparison to centralised and federated identity management solutions. The scheme is very flexible in financing sector, cross boundaries identity, e-governance portals and Web3 online portals. In the end, this study leads to an increment of a scaleable and privacy-sensitive digital identity system because it bridges existing security, usability and compliance gaps and opens pathways to robust and resilient SSI implementations into the future.

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