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Efficient Time-Bound Hierarchical Key Assignment Scheme
October 2004 (vol. 16 no. 10)
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.

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Index Terms:
Cryptography, hierarchical key assignment.
Citation:
Hung-Yu Chien, "Efficient Time-Bound Hierarchical Key Assignment Scheme," IEEE Transactions on Knowledge and Data Engineering, vol. 16, no. 10, pp. 1301-1304, Oct. 2004, doi:10.1109/TKDE.2004.59
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