AbstractIn this paper, we propose a new dynamic cryptographic key generation scheme for access control in a hierarchy. Our method can achieve the following three goals. First, the storage space needed to store public information is smaller than that required in previous work. Second, when a security class is added to the hierarchy, we assign a secret key and a public derivation key to the security class without affecting the keys of the other security classes in the hierarchy. Third, when a security class is deleted from the hierarchy, we simply erase the keys of that security class in the hierarchy and change the derivation key of its immediate ancestor.
Categories and Subject Descriptors: D.4.6 [Operating Systems]: Security and Protection
Additional Key Words and Phrases: access control, cryptography, data security, multilevel
Selected references
- Selim G. Akl and Peter D. Taylor. Cryptographic solution to a problem of access control in a hierarchy. ACM Transactions on Computer Systems, 1(3):239-248, August 1983.
- Ravinderpal S. Sandhu. Cryptographic implementation of a tree hierarchy for access control. Information Processing Letters, 27(2):95-98, 29 February 1988.