SSEM： Secure, Scalable and Efficient Multi-Owner Data Sharing in Clouds

作     者：Shungan Zhou Ruiying Du Jing Chen Hua Deng Jian Shen Huanguo Zhang 

作者机构：The Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of Education Computer School of Wuhan University Wuhan 430072 Hubei Province China State Grid Information and Communication Company of Hunan Electric Power Corp Changsha 410000 Hunan Province China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2016年第13卷第8期

页      面：231-243页

核心收录：

学科分类：0839[工学-网络空间安全] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported in part by National High-Tech Research and Development Program of China(“863”Program)under Grant No.2015AA016004 National Natural Science Foundation of China under Grants No.61173154,61272451,61572380 

主　　题：data sharing cloud computing asymmetric key agreement access control 

摘      要：Data sharing is a main application of cloud computing. Some existing solutions are proposed to provide flexible access control for outsourced data in the cloud. However, few attentions have been paid to group-oriented data sharing when multiple data owners want to share their private data for cooperative purposes. In this paper, we put forward a new paradigm, referred to as secure, scalable and efficient multi-owner(SSEM) data sharing in clouds. The SSEM integrates identity-based encryption and asymmetric group key agreement to enable group-oriented access control for data owners in a many-to-many sharing pattern. Moreover, with SSEM, users can join in or leave from the group conveniently with the privacy of both group data and user *** proposed the key-ciphertext homomorphism technique to construct an SSEM scheme with short ciphertexts. The security analysis shows that our SSEM scheme achieves data security against unauthorized accesses and collusion attacks. Both theoretical and experimental results confirm that our proposed scheme takes users little costs to share and access outsourced data in a group manner.