An access control model supporting periodicity constraints and temporal reasoning
ACM Transactions on Database Systems (TODS)
TRBAC: a temporal role-based access control model
RBAC '00 Proceedings of the fifth ACM workshop on Role-based access control
A Time-Bound Cryptographic Key Assignment Scheme for Access Control in a Hierarchy
IEEE Transactions on Knowledge and Data Engineering
Keying Hash Functions for Message Authentication
CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
MARKS: Zero Side Effect Multicast Key Management Using Arbitrarily Revealed Key Sequences
NGC '99 Proceedings of the First International COST264 Workshop on Networked Group Communication
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
Efficient techniques for realizing geo-spatial access control
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
New constructions for provably-secure time-bound hierarchical key assignment schemes
Proceedings of the 12th ACM symposium on Access control models and technologies
Comments on a cryptographic key assignment scheme
Computer Standards & Interfaces
Enforcing the security of a time-bound hierarchical key assignment scheme
Information Sciences: an International Journal
New constructions for provably-secure time-bound hierarchical key assignment schemes
Theoretical Computer Science
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)
Cryptographic enforcement of role-based access control
FAST'10 Proceedings of the 7th International conference on Formal aspects of security and trust
Time-storage trade-offs for cryptographically-enforced access control
ESORICS'11 Proceedings of the 16th European conference on Research in computer security
EventGuard: A System Architecture for Securing Publish-Subscribe Networks
ACM Transactions on Computer Systems (TOCS)
Enforcing subscription-based authorization policies in cloud scenarios
DBSec'12 Proceedings of the 26th Annual IFIP WG 11.3 conference on Data and Applications Security and Privacy
A note on time-bound hierarchical key assignment schemes
Information Processing Letters
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
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The problem of key management in access hierarchies studies ways to assign keys to users and classes such that each user, after receiving her secret key(s), is able to independently compute access keys for (and thus obtain access to) the appropriate resources defined by the hierarchical structure. If user privileges additionally are time-based, the key(s) a user receives should permit access to the resources only at the appropriate times. This paper presents a new, provably secure, and efficient solution that can be used to add time-based capabilities to existing hierarchical schemes. It achieves the following performance bounds: (i) to be able to obtain access to an arbitrary contiguous set of time intervals, a user is required to store at most 3 keys; (ii) the keys for a user can be computed by the system in constant time; (iii) key derivation by the user within the authorized time intervals involves a small constant number of inexpensive cryptographic operations; and (iv) if the total number of time intervals in the system is n, then the server needs to maintain public storage larger than n by only a small asymptotic factor, e.g., O(log* n log log n) with a small constant.