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Issue No. 10 - October (2004 vol. 16)
ISSN: 1041-4347
pp: 1301-1304
Hung-Yu Chien , IEEE Computer Society
The access privileges in distributed systems can be effectively organized as a hierarchical tree that consists of distinct classes. A hierarchical time-bound key assignment scheme is to assign distinct cryptographic keys to distinct classes according to their privileges so that users from a higher class can use their class key to derive the keys of lower classes, and the keys are different for each time period; therefore, key derivation is constrained by both the class relation and the time period. This paper shall propose, based on a tamper-resistant device, a new time-bound key assignment scheme that greatly improves the computational performance and reduces the implementation cost.
Cryptography, hierarchical key assignment.

H. Chien, "Efficient Time-Bound Hierarchical Key Assignment Scheme," in IEEE Transactions on Knowledge & Data Engineering, vol. 16, no. , pp. 1301-1304, 2004.
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