Efficient revocation in ciphertext-policy attribute-based encryption based cryptographic cloud storage

作     者：Yong CHENG Zhi-ying WANG Jun MA Jiang-jiang WU Song-zhu MEI Jiang-chun REN 

作者机构：School of ComputerNational University of Defense Technology 

出 版 物：《Journal of Zhejiang University-Science C(Computers and Electronics)》 (浙江大学学报C辑（计算机与电子（英文版）)

年 卷 期：2013年第14卷第2期

页      面：85-97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：Project (Nos. 61070037 61070201 and 61103016) supported by the National Natural Science Foundation of China 

主　　题：Revocation optimization Cryptographic access control Cloud storage 

摘      要：It is secure for customers to store and share their sensitive data in the cryptographic cloud ***,the revocation operation is a sure performance killer in the cryptographic access control *** optimize the revocation procedure,we present a new efficient revocation scheme which is efficient,secure,and *** this scheme,the original data are first divided into a number of slices,and then published to the cloud *** a revocation occurs,the data owner needs only to retrieve one slice,and re-encrypt and re-publish ***,the revocation process is accelerated by affecting only one slice instead of the whole *** have applied the efficient revocation scheme to the ciphertext-policy attribute-based encryption(CP-ABE) based cryptographic cloud *** security analysis shows that our scheme is computationally *** theoretically evaluated and experimentally measured performance results show that the efficient revocation scheme can reduce the data owner s workload if the revocation occurs frequently.