Cryptanalysis of A Hierarchical Data Access and Key Management in Cloud Computing

2018 2nd annual International Conference on Cloud Technology and Communication Engineering

计算机科学;无线电电子学

Yang, Cheng-Ying^1 ; Lee, Cheng-Chi^2 ; Sun, Tsuei-Hung^3 ; Hwang, Min-Shiang^4,5

Department of Computer Science, University of Taipei, Taipei, Taiwan^1

Department of Library and Information Science, Fu Jen Catholic University, New Taipei City

24205, Taiwan^2

Department of Management Information Systems, National Chung Hsing University, Taichung

402, Taiwan^3

Department of Computer Science and Information Engineering, Asia University, Taichung

41354, Taiwan^4

Department of Medical Research, China Medical University Hospital, China Medical University, Taichung

40402, Taiwan^5

关键词: Cloud storage services;    Encryption key;    Hierarchical data;    Hierarchical key management scheme;    Illegal Access;    Key management;    Key-management problem;    Research issues;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/466/1/012010/pdf
DOI  :  10.1088/1757-899X/466/1/012010

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

One of major applications in cloud computing is cloud storage service. It's an important research issue to protect the stored data from illegal access by the system manager in the Cloud. To encrypt entire file by using data owner's secret keys is the simple solution. However it will raise a key management problem. To solve this problem, Hwang and Sun proposed a hierarchical key management scheme. In their scheme, the data owner could change the encryption key more easily, and not to affect other users in Cloud Storage Service system. However, we find that some weaknesses of their scheme. In this article, we will show some weaknesses of their scheme.