TY  - JOUR
AU  - Ramirez, Jorge Estudillo 
AU  - Hernandez, Saul Eduardo Pomares 
AU  - Gomez, Gustavo Rodriguez 
AU  - Cruz, Jose Roberto Perez 
PY  - 2011
TI  - Topological Decoupled Group Key Management for Cellular Networks
JF  - Journal of Computer Science
VL  - 7
IS  - 3
DO  - 10.3844/jcssp.2011.409.415
UR  - https://thescipub.com/abstract/jcssp.2011.409.415
AB  - Problem statement: The continuous increasing capacity of the cellular networks motivates
the development of multiparty applications, such as interactive mobile TV and mobile social networks.
For these environments, security group services are required. A practical way to provide security services
is by using cryptographic methods. However, the key management needed for these methods, which
considers a dynamic group membership, introduces a high communication and storage overheads.
Approach: In this study we propose an efficient group key management scheme suitable for cellular
networks. Results: Our scheme reduces the number of keys to be transmitted and to be stored at a mobile
host in the presence of membership changes. The scheme is based on a two tier structure to organize the
cells in areas and the mobile hosts in clusters within an area. The main objective of the two tier structure
is to dissociate, in an advantageous manner, the mobile hosts’ distribution from the topological network. Conclusion: Our approach offers security services to a large number of mobile hosts by using lower cryptographic resources, thus providing us a more efficient key updating process.