Title :
Comments on "Provably Secure Constant Round Contributory Group Key Agreement in Dynamic Setting
Author :
Tan, Chik-How ; Yang, Guomin
Author_Institution :
Temasek Labs., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
In a recent paper, Dutta and Barua presented a group key agreement protocol in dynamic setting. The protocol allows users to efficiently join or leave a group and was believed to be provably secure. In this letter, we point out a flaw in the Dutta-Barua dynamic group key agreement protocol.
Keywords :
cryptographic protocols; Dutta-Barua dynamic group key agreement protocol; insecure network; provably secure constant round contributory group key agreement;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2010.2070590
