An Optimal Algorithm for Assigning Cryptographic Keys to Control Access in a Hierarchy
IEEE Transactions on Computers
Cryptographic implementation of a tree hierarchy for access control
Information Processing Letters
Secure Broadcasting Using the Secure Lock
IEEE Transactions on Software Engineering
A cryptographic key generation scheme for multilevel data security
Computers and Security
Membership authentication for hierarchical multigroups using the extended Fiat-Shamir scheme
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
Flexible access control with master keys
CRYPTO '89 Proceedings on Advances in cryptology
Cryptography and network security (2nd ed.): principles and practice
Cryptography and network security (2nd ed.): principles and practice
Cryptographic solution to a problem of access control in a hierarchy
ACM Transactions on Computer Systems (TOCS)
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Flexible support for multiple access control policies
ACM Transactions on Database Systems (TODS)
Proposed NIST standard for role-based access control
ACM Transactions on Information and System Security (TISSEC)
A cryptographic solution to implement access control in a hierarchy and more
SACMAT '02 Proceedings of the seventh ACM symposium on Access control models and technologies
Number Theory for Computing
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Chinese Remainder Theorem Based Hierarchical Access Control for Secure Group Communication
ICICS '01 Proceedings of the Third International Conference on Information and Communications Security
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As one of the most popular information safeguarding mechanisms, access control is widely deployed in information systems. However, access control approach suffers from a tough problem, i.e. system administrators must be unconditionally trusted. Cryptographic substitutes have been developed to solve the above problem. In particular, hierarchical encryption, as an alternate solution of access control in a hierarchy, has been intensively studied. In this paper, we propose a cryptographic solution for general access control based on Chinese Remainder Theorem. Our solution has two categories: data based solution and key based solution. In contrast to the most recent hierarchical encryption system: Ray, Ray and Narasimhamurthi's system [1], our solution is more efficient, secure and flexible. Moreover, we introduce an efficient mechanism for authorization alterations. This paper ends with a set of experimental results that support our research.