Multi-Receiver Signcryption Scheme with Multiple Key Generation Centers through Public Channel in Edge Computing  

作　　者：Lipeng Wang Zhi Guan Zhong Chen Mingsheng Hu 

机构地区：[1]School of Information Science and Technology,Zhengzhou Normal University,Zhengzhou 450044,China [2]School of Computer Science,Peking University,Beijing 100871,China

出　　处：《China Communications》2022年第4期177-198,共22页中国通信（英文版）

基　　金：supported by National Key Research and Development Program of China (2020YFB1005404);National Natural Science Foundation of China (62172010);Henan Province Higher Education Key Research Project (22A520048)。

摘　　要：The emerging edge computing technology for the Internet of Things has been playing an important role in our daily life. It is promising to utilize a multi-receiver signcryption scheme to protect the transmission data when an edge device broadcasts its sensing data to many different end devices at a time.There are several things to consider when we design a signcryption scheme. First existing schemes need to maintain a secure channel to generate the user private key, which may increase economic costs. Second the system private key of those schemes is kept secret by a single key generation center(KGC), and the single point of failure of KGC may compromise the whole system. For this, we propose a multi-receiver multimessage signcryption scheme without the secure channel. Firstly the scheme allows KGC to send secrets through the public channel, which reduces maintenance costs. Secondly, to eliminate the single point of failure, the scheme utilizes multiple KGCs to manage the system private key, and updates the secret of each KGC periodically to resist advanced persistent threat attacks. We demonstrate that the proposed scheme can achieve expected security properties. Performance analysis shows that it is with shorter ciphertext length and higher efficiency.

关 键 词：internet of things SIGNCRYPTION edge computing UNFORGEABILITY CONFIDENTIALITY 

分 类 号：TN918.4[电子电信—通信与信息系统] TP391.44[电子电信—信息与通信工程]