A Lightweight Privacy-Preserving Data Storage Using Modified Ring Signature Scheme Based on Elliptic Curve Cryptography

Abstract

Blockchain operates in a decentralized manner that provides the potential data available to the public. Privacy protection is an open challenge for data transparency. Applying Blockchain-based cryptographic algorithms in various applications can increase or protect data storage privacy. This paper constructs a lightweight privacy preserving data storage using Modified Ring signature Scheme based on Elliptic Curve Cryptography (MRSS-ECC). This solution built an anonymous user data storage to ensure the user information with highly secure and user identity privacy and validate the signature in the Blockchain network using the smart contract. Therefore, Security analysis of the scheme to verify correctness, unconditional anonymity, and unforgeability. The proposed system incorporates efficient key generation, signature formation, and verification processes to reduce computational overhead. Experimental evaluation demonstrates reduced signature size and improved verification time compared to related approaches. This framework can be adapted for e-governance, healthcare, and financial systems requiring secure, privacy-preserving public ledger integration.