An authenticated group key distribution protocol based on the generalized Chinese remainder theorem

作者：Guo Cheng; Chang Chin Chen^*

来源：International Journal of Communication Systems, 2014, 27(1): 126-134.

DOI：10.1002/dac.2348

• group key distribution
• secret sharing
• generalized Chinese remainder theorem
• session key

The group key distribution protocol is a mechanism for distributing a group key that is used to encrypt the communication data transmitted in an open group. Recently, a novel group key distribution protocol based on secret sharing was proposed. In their protocol, the group key information is broadcast in an open network environment, and only authorized group members can obtain the group key. However, their protocol requires each group member to broadcast a random challenge to the rest of the group members in the construction of the group key, and this may increase communication cost and cause network traffic congestion. In this paper, we propose an authenticated group key distribution protocol based on the generalized Chinese remainder theorem that drastically reduces communication costs while maintaining at least the same degree of security. Our protocol is built on the secret sharing scheme based on Chinese remainder theorem, which requires fewer computation operations than the previous work.

• 出版日期2014-1
• 单位清华大学