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
A cryptographic key generation scheme for multilevel data security
Computers and Security
Counting linear extensions is #P-complete
STOC '91 Proceedings of the twenty-third annual ACM symposium on Theory of computing
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
Characterization of Security Notions for Probabilistic Private-Key Encryption
Journal of Cryptology
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
Hierarchical identity based encryption with constant size ciphertext
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Enforcing the security of a time-bound hierarchical key assignment scheme
Information Sciences: an International Journal
Research: Dynamic key management schemes for access control in a hierarchy
Computer Communications
A cryptographic key assignment scheme in a hierarchy for access control
Mathematical and Computer Modelling: An International Journal
Efficient provably-secure hierarchical key assignment schemes
MFCS'07 Proceedings of the 32nd international conference on Mathematical Foundations of Computer Science
Incorporating temporal capabilities in existing key management schemes
ESORICS'07 Proceedings of the 12th 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)
Steiner transitive-closure spanners of low-dimensional posets
ICALP'11 Proceedings of the 38th international colloquim conference on Automata, languages and programming - Volume Part I
Efficient provably-secure hierarchical key assignment schemes
Theoretical Computer Science
Time-storage trade-offs for cryptographically-enforced access control
ESORICS'11 Proceedings of the 16th European conference on Research in computer security
A note on time-bound hierarchical key assignment schemes
Information Processing Letters
| Hi-index | 5.23 |
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 in the hierarchy can compute 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 use as a building block any provably-secure hierarchical key assignment scheme without temporal constraints and 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. Moreover, the proposed schemes support updates to the access hierarchy with local changes to public information and without requiring any private information to be re-distributed.