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 to encrypt 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 users access rights change.
Original language | English |
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Title of host publication | Security in information systems |
Subtitle of host publication | proceedings of the 5th International Workshop on Security in Information Systems, WOSIS 2007 |
Editors | Eduardo Fernández-Medina, Mariemma I. Yagüe |
Publisher | INSTICC PRESS |
Pages | 9-22 |
Number of pages | 14 |
ISBN (Print) | 978-972-8865-96-2 |
DOIs | |
Publication status | Published - Jun 2007 |
Event | 5th International Workshop on Security in Information Systems, WoSIS 2007 - Funchal, Portugal Duration: 12 Jun 2007 → 16 Jun 2007 Conference number: 5 |
Workshop
Workshop | 5th International Workshop on Security in Information Systems, WoSIS 2007 |
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Abbreviated title | WoSIS |
Country | Portugal |
City | Funchal |
Period | 12/06/07 → 16/06/07 |