A comment on the Chen-Chung scheme for hierarchical access control

✍ Scribed by Sheng Zhong; Tianwen Lin

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 102 KB
• Volume: 22
• Category: Article
• ISSN: 0167-4048
• DOI: 10.1016/s0167-4048(03)00513-3

✦ Synopsis

Chen and Chung proposed an improved scheme of hierarchical access control based on the Chinese Remainder theorem and symmetric encryption [1]. In this paper, we point out that the part of their scheme for adding a new class

is not correct. Furthermore, we discuss how to fix this problem.