A CRYPTOGRAPHIC KEY ASSIGNMENT SCHEME IN A HIERARCHY FOR ACCESS-CONTROL

Authors
HWANG MS
Citation
Ms. Hwang, A CRYPTOGRAPHIC KEY ASSIGNMENT SCHEME IN A HIERARCHY FOR ACCESS-CONTROL, Mathematical and computer modelling, 26(2), 1997, pp. 27-31
Citations number
9
Categorie Soggetti
Mathematics,Mathematics,"Computer Science Interdisciplinary Applications","Computer Science Software Graphycs Programming
Journal title
Mathematical and computer modelling → ACNP
ISSN journal
08957177
Volume
26
Issue
2
Year of publication
1997
Pages
27 - 31
Database
ISI
SICI code
0895-7177(1997)26:2<27:ACKASI>2.0.ZU;2-I
Abstract
Access control is one of the mechanisms for data protection in a compu ter system. Many literatures based on cryptography have been proposed to solve the problem of access control in hierarchic structures. Recen tly, Liaw and Lei proposed an optimal heuristic algorithm for multilev el data security. But, their heuristic algorithm can only be used in a tree structure, which it is a special case of a partially-ordered hie rarchy. In this article, we present a modification of their algorithm that enables the algorithm to be used in a partially-ordered structure .