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On Efficient Parallel Secure Outsourcing of Modular Exponentiation to Cloud for IoT Applications

Author

Listed:
  • Satyabrat Rath

    (Department of Mathematical and Computational Sciences, NITK Surathkal, Mangaluru 575025, Karnataka, India)

  • Jothi Ramalingam

    (Department of Mathematical and Computational Sciences, NITK Surathkal, Mangaluru 575025, Karnataka, India)

  • Cheng-Chi Lee

    (Department of Library and Information Science, Fu Jen Catholic University, New Taipei City 24205, Taiwan
    Department of Computer Science and Information Engineering, Fintech and Blockchain Research Center, Asia University, Taichung City 41354, Taiwan)

Abstract

Modular exponentiation is crucial for secure data exchange in cryptography, especially for resource-constrained Internet of Things (IoT) devices. These devices often rely on third-party servers to handle computationally intensive tasks like modular exponentiation. However, existing outsourcing solutions for the RSA algorithm may have security vulnerabilities. This work identifies a critical flaw in a recent outsourcing protocol for RSA proposed by Hu et al. We demonstrate how this flaw compromises the security of the entire RSA system. Subsequently, we propose a robust solution that strengthens the RSA algorithm and mitigates the identified vulnerability. Furthermore, our solution remains resilient against existing lattice-based attacks. The proposed fix offers a more secure and efficient way for IoT devices to leverage the power of third-party servers while maintaining data integrity and confidentiality. An extensive performance evaluation confirms that our solution offers comparable efficiency while significantly enhancing security compared to existing approaches.

Suggested Citation

  • Satyabrat Rath & Jothi Ramalingam & Cheng-Chi Lee, 2024. "On Efficient Parallel Secure Outsourcing of Modular Exponentiation to Cloud for IoT Applications," Mathematics, MDPI, vol. 12(5), pages 1-14, February.
  • Handle: RePEc:gam:jmathe:v:12:y:2024:i:5:p:713-:d:1348069
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