Comments on 'dynamic key management schemes for access control in a hierarchy'

研究成果: Review article同行評審

16 引文 斯高帕斯(Scopus)


In 1997, Lin proposed a new dynamic access control scheme with a central authority for users organized in a hierarchy. The author claimed that the new scheme has many advantages, e.g. any class can change its group key for security reasons without affecting the others. However, this paper will show that once the old group key of a class is exposed, the newly chosen group key can be easily derived by the old key. Moreover, we shall show that if the identity of a class has a few bits different from those of the other classes, a user in the class can easily derive the group keys of these classes to which he/she is not entitled.

頁(從 - 到)87-89
期刊Computer Communications
出版狀態Published - 1999

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信


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