Efficiency of a Good But Not Linear Set Union Algorithm
Journal of the ACM (JACM)
Cryptographic solution to a problem of access control in a hierarchy
ACM Transactions on Computer Systems (TOCS)
A Time-Bound Cryptographic Key Assignment Scheme for Access Control in a Hierarchy
IEEE Transactions on Knowledge and Data Engineering
Trade-offs in non-reversing diameter
Nordic Journal of Computing
Space-time tradeoff for answering range queries (Extended Abstract)
STOC '82 Proceedings of the fourteenth annual ACM symposium on Theory of computing
Security of Tzeng's Time-Bound Key Assignment Scheme for Access Control in a Hierarchy
IEEE Transactions on Knowledge and Data Engineering
Efficient Time-Bound Hierarchical Key Assignment Scheme
IEEE Transactions on Knowledge and Data Engineering
Security of Chien's Efficient Time-Bound Hierarchical Key Assignment Scheme
IEEE Transactions on Knowledge and Data Engineering
An RSA-based time-bound hierarchical key assignment scheme for electronic article subscription
Proceedings of the 14th ACM international conference on Information and knowledge management
Dynamic and efficient key management for access hierarchies
Proceedings of the 12th ACM conference on Computer and communications security
Merging: An Efficient Solution for a Time-Bound Hierarchical Key Assignment Scheme
IEEE Transactions on Dependable and Secure Computing
ASIACCS '06 Proceedings of the 2006 ACM Symposium on Information, computer and communications security
Key management for non-tree access hierarchies
Proceedings of the eleventh ACM symposium on Access control models and technologies
On Key Assignment for Hierarchical Access Control
CSFW '06 Proceedings of the 19th IEEE workshop on Computer Security Foundations
Provably-secure time-bound hierarchical key assignment schemes
Proceedings of the 13th ACM conference on Computer and communications security
Comments on a cryptographic key assignment scheme
Computer Standards & Interfaces
Collusion resistant broadcast encryption with short ciphertexts and private keys
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Enforcing the security of a time-bound hierarchical key assignment scheme
Information Sciences: an International Journal
Efficient and secure distribution of massive geo-spatial data
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Scalable key management algorithms for location-based services
IEEE/ACM Transactions on Networking (TON)
Trade-Offs in Cryptographic Implementations of Temporal Access Control
NordSec '09 Proceedings of the 14th Nordic Conference on Secure IT Systems: Identity and Privacy in the Internet Age
Efficient multi-dimensional key management in broadcast services
ESORICS'10 Proceedings of the 15th European conference on Research in computer security
Practical and efficient cryptographic enforcement of interval-based access control policies
ACM Transactions on Information and System Security (TISSEC)
Comparison-based encryption for fine-grained access control in clouds
Proceedings of the second ACM conference on Data and Application Security and Privacy
Incorporating temporal capabilities in existing key management schemes
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
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A time-bound hierarchical key assignment scheme is a method to assign time-dependent encryption keys to a set of classes in a partially ordered hierarchy, in such a way that each class can derive the keys of all classes lower down in the hierarchy, according to temporal constraints. In this paper we propose new constructions for time-bound hierarchical key assignment schemes which are provably secure with respect to key indistinguishability. Our constructions exhibit a tradeoff among the amount of private information held by each class, the amount of public data, the complexity of key derivation, and the computational assumption on which their security is based.