Pairing-Free Identity-Based Encryption with Security Against the KGC
Yi‐Fan Tseng, Jheng-Jia Huang, Guanyu Chen, Wei-Hsueh Wang, Yuhsuan Chang · 2024
Identity-Based Encryption (IBE) offers significant advantages over traditional encryption methods by simplifying key management and enhancing user convenience. However, IBE schemes are susceptible to the key-escrow problem, which compromises user privacy and security. In this work, we propose a novel approach for IBE that does not rely on pairing and effectively combats the key-escrow problem, by adopting Blind IBE with Certified Identity framework, further demonstrating Key Anonymity with respect to the Authority. Our approach addresses the importance of mitigating the key-escrow problem while considering efficiency concerns associated with pairing-based cryptography.