Abstract：Aiming at the problems of the heavy client computing overhead for encryption and decryption and access structure privacy disclosure，an efficient CPABE （ciphertext policyattribute based encryption） based access control scheme for cloud storage is proposed.By adding the proxy servers，the client computing overhead for encryption and decryption is greatly reduced and the access policies can be hided；Hierarchical encryption is introduced to reduce the computing overhead for data encryption，in which the symmetric key is used to encrypt upload data for efficient and the attribute key is used to encrypt symmetric key for security；By providing the authorized user set，the attribute set verification for unauthorized users can be avoided.The experiments show that，compared with the existing access control schemes，our scheme has higher encryption and decryption efficiency and clients′ burden is effectively alleviated.
严新成,陈越,翟雨畅,兰巨龙,黄恺翔,. 一种高效的CP-ABE云数据访问控制方案[J]. 小型微型计算机系统, 2016, 37(10): 2155-2161.
YAN Xin-cheng,CHEN Yue,ZHAI Yu-chang,LAN Ju-long,HUANG Kai-xiang,. An Efficient CPABE Based Access Control Scheme for Cloud Storage. Journal of Chinese Computer Systems, 2016, 37(10): 2155-2161.
2016, Vol. 37 
