Research Article

, 31 Aug 2026 | 10.62346/ijcn_q1_v14_no1_26_06
Year : 2026 | Volume: 14 | Issue: 3 | Pages : 1 - 8

Privacy-Preserving Secure Data Sharing Framework for Cloud Environments Using Hybrid Re-Encryption and Lightweight Cryptography

  • 1Anna University Chennai, Department of Computer Science and Engineering, Mar Ephraem College of Engineering and Technology, Tamilnadu, India, IN
  • 2Anna University Chennai, Department of Computer Science and Engineering, Mar Ephraem College of Engineering and Technology, Tamilnadu, India, IN
Cloud computing continues to dominate modern distributed systems, enabling scalable and on-demand services. However, secure data sharing and user privacy remain critical challenges, especially in multi-tenant and geographically distributed cloud environments. This paper proposes a privacy-preserving secure data sharing framework integrating hybrid encryption (AES-GCM + ECC) with an enhanced proxy-based re-encryption mechanism for dynamic access control. Unlike traditional RSA-based approaches, the proposed system adopts lightweight elliptic curve cryptography (ECC) and forward-secure re-encryption techniques, ensuring reduced computational overhead and improved scalability. The framework supports secure delegation without exposing plaintext or private keys, aligning with Zero Trust security models. Performance evaluation demonstrates improved efficiency in terms of encryption time, throughput, and key management compared to legacy RSA-based systems. Security analysis confirms resistance against common attacks such as replay, collusion, and man-in-the-middle attacks.

Conclusion

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Keywords: Cloud Security, Privacy Preservation, Proxy Re-encryption, ECC, AES-GCM, Zero Trust, Secure Data Sharing

Citation: A. Biju *, A. Biju ( 2026), Privacy-Preserving Secure Data Sharing Framework for Cloud Environments Using Hybrid Re-Encryption and Lightweight Cryptography. , 14(3): 1 - 8

Received: 15/02/2026; Accepted: 25/02/2026;
Published: 28/02/2026

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*Correspondence: A. Biju , bijubijua@gmail.com


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