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A dynamic cryptographic key generation and information broadcasting scheme in information systems

✍ Scribed by Horng-Twu Liaw

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
837 KB
Volume
13
Category
Article
ISSN
0167-4048

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## Recently, Wu and Chang and Shen and Chen separately proposed a cryptographic key assignment scheme for solving access control problem in a partially ordered user hierarchy. However, this paper will show the security leaks inherent in both schemes based on polynomial interpolations. That is, the u