Dynamic Group Key Agreement in Tree-Based Setting
We present a provably secure tree based authenticated group key agreement protocol in dynamic scenario. Bilinear pairing and multi-signature are at the heart of our protocol. We prove that our protocol is provably secure in the standard security model of Bresson et al. An appropriate modification of Katz-Yung approach to tree based setting is adopted while proving its security against active adversaries. The protocol has an in-built hierarchical structure that makes it desirable for certain applications.
KeywordsLeaf Node Query Model User Instance Passive Adversary Event Forge
Unable to display preview. Download preview PDF.
- 7.Dutta, R., Barua, R.: Dynamic Group Key Agreement in Tree-Based setting, Available at http://www.cse.iitk.ac.in/users/iriss05/r_dutta.pdf
- 10.Kim, Y., Perrig, A., Tsudik, G.: Tree based Group Key Agreement, Available at http://eprint.iacr.org/2002/009