An Optimal Algorithm for Assigning Cryptographic Keys to Control Access in a Hierarchy
IEEE Transactions on Computers
Key Agreement in Dynamic Peer Groups
IEEE Transactions on Parallel and Distributed Systems
Cryptographic solution to a problem of access control in a hierarchy
ACM Transactions on Computer Systems (TOCS)
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
Flexible Access Control with Master Keys
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Sibling Intractable Function Families and Their Applications (Extended Abstract)
ASIACRYPT '91 Proceedings of the International Conference on the Theory and Applications of Cryptology: Advances in Cryptology
A Key Assignment Scheme for Controlling Access in Partially Ordered User Hierarchies
AINA '04 Proceedings of the 18th International Conference on Advanced Information Networking and Applications - Volume 2
Tree-based group key agreement
ACM Transactions on Information and System Security (TISSEC)
Group Key Agreement Efficient in Communication
IEEE Transactions on Computers
Cryptographic key assignment schemes for any access control policy
Information Processing Letters
Hierarchical key management scheme using polynomial interpolation
ACM SIGOPS Operating Systems Review
Dynamic and efficient key management for access hierarchies
Proceedings of the 12th ACM conference on Computer and communications security
Scalable Protocols for Authenticated Group Key Exchange
Journal of Cryptology
Key management for content access control in a hierarchy
Computer Networks: The International Journal of Computer and Telecommunications Networking
Provably secure authenticated group Diffie-Hellman key exchange
ACM Transactions on Information and System Security (TISSEC)
A dynamic key management solution to access hierarchy
International Journal of Network Management
Scalable authenticated tree based group key exchange for ad-hoc groups
FC'07/USEC'07 Proceedings of the 11th International Conference on Financial cryptography and 1st International conference on Usable Security
A novel hierarchical key management scheme based on quadratic residues
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
New proofs for NMAC and HMAC: security without collision-resistance
CRYPTO'06 Proceedings of the 26th annual international conference on Advances in Cryptology
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Since the very beginnings of cryptography many centuries ago, key management has been one of the main challenges in cryptographic research. In case of a group of players wanting to share a common key, many schemes exist in the literature, managing groups where all players are equal or proposing solutions where the group is structured as a hierarchy. This paper presents the first key management scheme suitable for a hierarchy where no central authority is needed and permitting to manage a graph representing the hierarchical group with possibly several roots. This is achieved by using a HMAC and a non-hierarchical group key agreement scheme in an intricate manner and introducing the notion of virtual node.