Security of Tzeng's time-bound key assignment scheme for access control in a hierarchy

Security of Tzeng's time-bound key assignment scheme for access control in a hierarchy

Tzeng (2002) proposed a time-bound cryptographic key assignment scheme for access control in a partial-order hierarchy. In this paper, we show that Tzeng's scheme is insecure against the collusion attack whereby three users conspire to access some secret class keys that they should not know acc...

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Veröffentlicht in:IEEE transactions on knowledge and data engineering 2003-07, Vol.15 (4), p.1054-1055
Hauptverfasser: Yi, Xun, Ye, Yiming
Format: Artikel
Sprache:eng
Schlagworte:
Access control
Business
Certification
Cryptography
Defense industry
Government
Hierarchies
Keys
Protection
Security
Spatial databases
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Zusammenfassung:Tzeng (2002) proposed a time-bound cryptographic key assignment scheme for access control in a partial-order hierarchy. In this paper, we show that Tzeng's scheme is insecure against the collusion attack whereby three users conspire to access some secret class keys that they should not know according to Tzeng's scheme.
ISSN:1041-4347
1558-2191
DOI:10.1109/TKDE.2003.1209023