## 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
β¦ LIBER β¦
A scheme to determine the relationship between two users in a hierarchy
β Scribed by C.C. Chang; J.K. Jan; D.J. Buehrer
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 443 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0167-4048
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