Group Signature and Key Agreement Schemes Based on Diffie-Hellman Key Exchange Protocol

• Main Authors: Pen-Yi Chang, 張本毅
• Other Authors: Chin-Chen Chang
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/00699887042168121766

碩士 === 國立中正大學 === 資訊工程所 === 94 === Since the network is prospering, our life becomes more and more convenient. We can do many things through network. However, network environment is often insecure and can be eavesdropped easily. So, we need to provide at least two requirements of information transmitted on network: security and integrity. We can fulfill the two requirements by encrypting and signing the information transmitted on network. In this paper, we propose a novel group signature scheme which is efficient and the length of signature is independent on the member numbers of the group. Moreover, to make wireless sensor network more suitable in practical use, researchers have to develop an efficient method to ensure secure data transmission through sensor nodes. Therefore, we propose a novel key agreement scheme which can ensure that any pair of node can securely negotiate one session key, and its required computational overheads are acceptable because the scheme is based on Bilinear Pairing and Gap Diffie-Hellman Group. Finally, to prevent the leak of information in network meeting, we propose a collaborative conference key agreement scheme based on Diffie-Hellman Key Exchange Protocol.