基于Vandermonde矩阵的分布式密钥分发中心方案

Distributed key distribution centre scheme based on Vandermonde matrix

基于Vandermonde矩阵和Shamir秘密共享方案提出了一个新的无条件安全的分布式密钥分发中心方案。与基于可验证秘密共享的方案相比,该方案假定每个用户和所有的服务器之间有安全的连接;每两个服务器之间有安全的连接,而不需要广播通道,这在实际应用中更容易实现。与基于Shamir秘密共享的二次扩展的方案相比,该方案不仅减少了计算负载和通信负载,而且增加了可靠性。

An unconditional safe Distributed Key Distribution Centre （DKDC） scheme was proposed based on the Vandermonde matrix and Shamir＇s secret sharing sohemes. Comparing with the verifiable secret sharing based scheme, the proposed scheme assumes that each user is connected to all servers, and each two servers are also connected through secure channels, thus no broadcasting channel is required. Therefore, it is more practicable in application. Comparing with the bidimensional extension Shamir＇s secret sharing based scheme, the proposed scheme not only reduces computational and communication loads, it is also more reliable.