An Improved Identity-Based Ring Signcryption Scheme
Lunzhi Deng, Chenglian Liu, Xiang‐Bin Wang · Information Security Journal A Global Perspective · 2013
In this paper, we show that the identity-based ring signcryption scheme suggested by Zhu, Zhang, and Wang (2009 Zhu, Z.C., Zhang, Y. and Wang, F.J. 2009. An efficient and provable secure identity-based ring signcryption scheme. Computer Standard & Interfaces, 31: 1092–1097. [Crossref], [Web of Science ®] , [Google Scholar]) does not reach the security as they claimed it does. To make up for this defect, we propose a rescue scheme and prove the revised scheme is secure under the random oracle model.