Multiauthority ABE Without Central Authority for Access Control Scheme in Cloud Storage
YANG Xiao-dong1,2,ZHOU Qi-xu1,YANG Miao-miao1,LIU Ting-ting1,WANG Cai-fen1
1(College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070，China)
2(State Key Laboratory of Cryptology,Beijing 100878,China)
Abstract：In order to improve the security and efficiency of multiauthority attributebased encryption access control scheme for cloud storage,a multiauthority attributebased encryption without central authority for access control scheme in cloud storage is presented．In the proposed scheme,multiple attribute authority jointly distribute the user′s key by using the distributed key generation protocol.This scheme can support flexible access control policy through linear secret sharing scheme.Furthermore,by introducing proxy reencryption and decryption outsourcing technology,the majority of computing tasks entrusted to the cloud server to perform.Hence,it can realize ondemand attribute revocation of user and effectively reduce the computational overhead of users.The results show that this scheme has high performance on encryption/decryption operations.It is adaptively secure under qBDHE assumption.
杨小东,周其旭,杨苗苗,刘婷婷,王彩芬. 无中央授权中心的属性基加密云端储访问控制方案[J]. 小型微型计算机系统, 2017, 38(4): 826-829.
YANG Xiao-dong,ZHOU Qi-xu,YANG Miao-miao,LIU Ting-ting,WANG Cai-fen. Multiauthority ABE Without Central Authority for Access Control Scheme in Cloud Storage. Journal of Chinese Computer Systems, 2017, 38(4): 826-829.
2017, Vol. 38 
