Researchers Develop Non-Interactive Secure Proof of Ownership for Cloud Storage

Strategic Insights -

Researchers at the University of South China have developed a new method for securing cloud storage, addressing the challenges of verifying data ownership and preventing cyber attacks. The researchers proposed a non-interactive, secure Proof of Ownership (PoW) method, called Nis-PoW, which simplifies ownership verification and eliminates delays for unverified block information. Nis-PoW uses modular exponentiation and the discrete logarithm problem to generate and verify proofs, making it more efficient and secure than existing methods.

Key Takeaways:

  • The researchers developed Nis-PoW, a non-interactive, secure Proof of Ownership for cloud storage, to address the challenges of verifying data ownership and preventing cyber attacks.
  • Nis-PoW simplifies ownership verification to a single round, eliminating delays for unverified block information.
  • The method uses modular exponentiation and the discrete logarithm problem to generate and verify proofs, making it more efficient and secure than existing methods.
  • Experimental results showed that Nis-PoW reduces I/O operation time complexity and accelerates computations, achieving up to 53.6x and 54.5x speedups compared to state-of-the-art approaches.
  • The researchers proposed Nis-PoW as a solution to the challenges of verifying data ownership post-deduplication, which is a critical issue in cloud storage.
  • Nis-PoW is designed to mitigate brute-force, replay, and Man-in-the-Middle attacks without relying on trusted nodes, ensuring better real-world compatibility.

Statistics:

  • The researchers achieved speedups of up to 53.6x and 54.5x compared to state-of-the-art approaches in I/O operation time complexity and computations, respectively.
  • Nis-PoW is designed to simplify ownership verification to a single round, eliminating delays for unverified block information.
  • The method has been shown to be secure against brute-force, replay, and Man-in-the-Middle attacks without relying on trusted nodes.

Sources:

  • Nis-pow: Non-interactive Secure Proof of Ownership for Cloud Storage. Journal of Systems Architecture, 2025;168.
  • Elsevier. Journal of Systems Architecture. www.journals.elsevier.com/journal-of-systems-architecture/
  • National Natural Science Foundation of China (NSFC)
  • Hunan Province research foundation, China
  • Natural Science Foundation of Hunan Province
  • Wenlong Tian, University of South China, School of Computer Science and Technology, Hengyang, People's Republic of China.
  • Zhihuan Yang, Xuming Ye, Ruixuan Li, and Zhiyong Xu, co-authors of the research.