A Key Distribution Protocol Based On Wdh Assumption
Hongtu Li, Hongtu Li, Liang Qing Hu, Wei Yuan, Jianfeng Chu, Hongwei Li, Hongwei Li · Procedia Engineering · 2011
Key distribution is critical for the practicality of any public key cryptosystem and identity-based encryption (IBE) system. When new users register on the PKG, it is important for him/her to obtain his/her private key safely. In this paper, we propose a solution to deal with this problem without smart cards or a third service. We subjoin a user's private master key using authentication message, by which users can validate the registration information and make sure the security of the protocol based on WDH assumption. We prove that the protocol proposed in this paper can defend the Key Compromise Impersonation (KCI) and Key replicating Attack (KRA).