Efficient Certificateless Authenticated Key Agreement for Blockchain-Enabled Internet of Medical Things  

作　　者：Chaoyang Li Yanbu Guo Mianxiong Dong Gang Xu Xiu-Bo Chen Jian Li Kaoru Ota 

机构地区：[1]College of Software Engineering,Zhengzhou University of Light Industry,Zhengzhou,450002,China [2]Department of Sciences and Informatics,Muroran Institution of Technology,Muroran,050-8585,Japan [3]School of Computing Science and Technology,North China University of Technology,Beijing,100144,China [4]Information Security Centre,State Key Laboratory of Networking and Switching Technology,Beijing University of Post and Telecommunications,Beijing,100876,China

出　　处：《Computers, Materials & Continua》2023年第4期2043-2059,共17页计算机、材料和连续体（英文）

基　　金：supported by the National Natural Science Foundation of China under Grant 92046001,61962009,the JSPS KAKENHI Grant Numbers JP19K20250,JP20H04174,JP22K11989;Leading Initiative for Excellent Young Researchers (LEADER),MEXT,Japan,and JST,PRESTO Grant Number JPMJPR21P3;Japan.Mianxiong Dong is the corresponding author,the Doctor Scientific Research Fund of Zhengzhou University of Light Industry under Grant 2021BSJJ033;Key Scientific Research Project of Colleges and Universities in Henan Province (CN)under Grant No.22A413010.

摘　　要：Internet of Medical Things(IoMT)plays an essential role in collecting and managing personal medical data.In recent years,blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical data.However,some problems in the information transfer process between wireless medical devices and mobile medical apps,such as information leakage and privacy disclosure.This paper first designs a cross-device key agreement model for blockchain-enabled IoMT.This model can establish a key agreement mechanism for secure medical data sharing.Meanwhile,a certificateless authenticated key agreement(KA)protocol has been proposed to strengthen the information transfer security in the cross-device key agreement model.The proposed KA protocol only requires one exchange of messages between the two parties,which can improve the protocol execution efficiency.Then,any unauthorized tampering of the transmitted signed message sent by the sender can be detected by the receiver,so this can guarantee the success of the establishment of a session key between the strange entities.The blockchain ledger can ensure that the medical data cannot be tampered with,and the certificateless mechanism can weaken the key escrow problem.Moreover,the security proof and performance analysis are given,which show that the proposed model and KA protocol are more secure and efficient than other schemes in similar literature.

关 键 词：CERTIFICATELESS key agreement authentication blockchain internet of medical things 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]