The following publications are possibly variants of this publication: 
- A Secure Pairing-Free Certificateless Online/Offline Signcryption Scheme With Batch Verification for Edge Computing-Based VANETsWenjie Yang 0001, Peiwei Cao, Futai Zhang. tvt, 74(1):1570-1583, January 2025.  [doi] 
- Efficient Offline/Online Heterogeneous-Aggregated Signcryption Protocol for Edge Computing-Based Internet of VehiclesIkram Ali, Yong Chen 0010, Jianqiang Li 0001, Abdul Wakeel, Chengwei Pan, Niamat Ullah. tits, 24(12):14506-14519, December 2023.  [doi] 
- Efficient and Provably Secure Offline/Online Heterogeneous Signcryption Scheme for VANETsYahui Wang, Xiaoying Jia 0002, Yingying Bao, Yangzhou Cao, Jiaming Wen 0001. iotj, 11(24):41248-41260, December 2024.  [doi]