An optimal class of symmetric key generation systems
Proc. of the EUROCRYPT 84 workshop on Advances in cryptology: theory and application of cryptographic techniques
Key storage in secure networks
Discrete Applied Mathematics
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Some New Results on Key Distribution Patterns and BroadcastEncryption
Designs, Codes and Cryptography
New constructions for multicast re-keying schemes using perfect hash families
Proceedings of the 7th ACM conference on Computer and communications security
Simple and fault-tolerant key agreement for dynamic collaborative groups
Proceedings of the 7th ACM conference on Computer and communications security
Key Agreement in Dynamic Peer Groups
IEEE Transactions on Parallel and Distributed Systems
Communications of the ACM
Key Management for Secure Multicast with Dynamic Controller
ACISP '00 Proceedings of the 5th Australasian Conference on Information Security and Privacy
On the Key Predistribution System: A Practical Solution to the Key Distribution Problem
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Perfectly-Secure Key Distribution for Dynamic Conferences
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
A Quick Group Key Distribution Scheme with "Entity Revocation"
ASIACRYPT '99 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Efficient Trace and Revoke Schemes
FC '00 Proceedings of the 4th International Conference on Financial Cryptography
The Decision Diffie-Hellman Problem
ANTS-III Proceedings of the Third International Symposium on Algorithmic Number Theory
Cumulative Arrays and Geometric Secret Sharing Schemes
ASIACRYPT '92 Proceedings of the Workshop on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Efficient communication-storage tradeoffs for multicast encryption
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
A group key distribution scheme with decentralised user join
SCN'02 Proceedings of the 3rd international conference on Security in communication networks
Constructing general dynamic group key distribution schemes with decentralized user join
ACISP'03 Proceedings of the 8th Australasian conference on Information security and privacy
| Hi-index | 0.00 |
Group key distribution systems (GKDS) provide access control for group applications by maintaining a group key for a dynamic group of users u. During the system lifetime subgroups of u be formed and group keys can be established for each such subgroup. The group u can also be expanded by admitting new users. Dynamic GKDS allow the group management to be decentralised. That is, any group member can form a subgroup and collaboration of several group members may admit new members to the system. We introduce a novel property for dynamic GKDS: allowing specified subsets of users, called access sets, to admit new members to the group. We provide an access structure made up of access sets, where cooperation of a full access set is required to exact admission. This provides a mechanism for self-sufficient, size dynamic and hierachical groups, in the sense of only allowing specified sets of users to admit new members. We give a model and two dynamic GKDS with this property. The first is a threshold scheme, any user subset of a specified size is an access set. The second scheme limits the access structure to chosen sets of up to some size. We also give a variant of the second scheme to have better efficiency. We show that our proposed GKDS are consistent and secure. We evaluate the efficiency of the schemes.