Efficient provably-secure hierarchical key assignment schemes
Efficient provably-secure hierarchical key assignment schemes
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DOI:
10.1016/j.tcs.2011.06.024
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发表时间:
2007-08
期刊:
影响因子:
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通讯作者:
A. D. Santis;A. L. Ferrara;B. Masucci
中科院分区:
文献类型:
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作者:
A. D. Santis;A. L. Ferrara;B. Masucci
A hierarchical key assignment scheme is a method to assign some private information and encryption keys to a set of classes in a partially ordered hierarchy, in such a way that the private information of a higher class can be used to derive the keys of all classes lower down in the hierarchy. In this paper we design and analyze hierarchical key assignment schemes which are provably secure and support dynamic updates to the hierarchy with local changes to the public information and without requiring any private information to be re-distributed.