一般的密钥共享方案中都假设有一个管理者,管理者的作用是分发密钥,因此对管理者的可信要求很高,而现实生活中很难找到符合要求的管理者。文中利用单调存取结构上的张成方案构造了一个没有管理者的密钥共享方案,并证明其是一个可行的实用的密钥共享方案。基于这个的方案,构造了一个分布式密钥生成器。
The general secret sharing scheme always supposes a dealer for distributing keys, hence the dealer must be highly credible. However it is quite hard to find a qualified dealer. In this paper, a secret sharing scheme without a dealer is constructed, which is based on an Integer Span Program in a monotone access structure, and the experiment has proved this scheme, based on which a distributed key generator is proposed.