Efficient key management for cryptographically enforced access control


Zych, Anna and Petkovic, Milan and Jonker, Willem (2008) Efficient key management for cryptographically enforced access control. Computer Standards & Interfaces, 30 (6). pp. 410-417. ISSN 0920-5489

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Abstract:Cryptographic enforcement of access control mechanisms relies on encrypting protected data with the keys stored by authorized users. This approach poses the problem of the distribution of secret keys. In this paper, a key management scheme is presented where each user stores a single key and is capable of efficiently calculating appropriate keys needed to access requested data. The proposed scheme does not require encryption of the same data (key) multiple times with the keys of different users or groups of users. It is designed especially for the purpose of access control. Thanks to that, the space needed for storing public parameters is significantly reduced. Furthermore, the proposed method supports flexible updates when user's access rights change.
Item Type:Article
Copyright:© 2008 Elsevier
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/81212
Official URL:https://doi.org/10.1016/j.csi.2008.03.009
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