Issue No.10 - October (2004 vol.16)
Hung-Yu Chien , IEEE Computer Society
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TKDE.2004.59
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.
Hung-Yu Chien, "Efficient Time-Bound Hierarchical Key Assignment Scheme", IEEE Transactions on Knowledge & Data Engineering, vol.16, no. 10, pp. 1301-1304, October 2004, doi:10.1109/TKDE.2004.59