UC-Secure Multi-Factor Authentication With Dynamic Password Recovery and Fine-Grained Access Control

Summary

Researchers introduce MFA-DPRF, a multi-factor authentication scheme that combines attribute-based fine-grained access control with a dynamic password recovery method. Recovery relies on secret questions and secret sharing, letting users restore passwords locally and update secret values. The authors reduce its security to the computational Diffie-Hellman problem under the Random Oracle Model, analyze it in the universally composable framework, and report that performance analysis shows it is superior to state-of-the-art works in security and efficiency.