【摘要】 在分析基于 Diffie- Hellman的组密钥约定协议 BD和 TGDH的基础上 ,提出一种新的基于椭圆曲线密码体制的组密钥约定方案 TGDH- BD。由于该方案建立在椭圆曲线离散对数计算难题之上 ,最大可能地减少了通信开销与计算工作量 ,因而更安全有效 ,适合分布式网络环境的组应用 .更多还原

【Abstract】 The group key agreement and its new characteristic are introduced,and current group key agreement protocols BD and TGDH are also analyzed.A new group key agreement scheme based on Elliptic Curve Cryptosystems is presented.The scheme is secure and effective,and fit for the group application on distributed network.更多还原