基于公开密钥算法的群组安全体系

Group Security Architecture Based on Public-key Algorithm

分析了群组用户对信息安全的特殊需求，提出了一种面向群组用户的密码体系。方案基于公开密钥算法，并使用多项式对密钥进行分割，可以实现用户组间的数字签名、验证以及加密、解密，而且不会泄露用户的私人密钥。给出了基于 RSA算法的具体实现，并分析了安全性。

In this paper, the special requirements of group user are analyzed。 A kind of group-oriented cryptography is proposed. This scheme is based on public-key algorithm and the key is shared by polynomial. This scheme can realize digital signature, authentication, encrypt and decrypt. In the process the private key will not be revealed. The realization based on RSA is introduced and the security is analyzed.