基于身份的卫星网络密钥管理方案

为进一步提高卫星网络密钥管理的效率，文中假设地面控制中心（Telluric Control Center，TCC）作为PKG（Private Key Generation）是完全可信且性能强大的，由TCC为卫星计算私钥，并利用Shamir秘密共享方案将私钥分片传送给各卫星节点，在会话密钥协商过程中利用节点私钥加密时间戳和位置信息以保证新鲜性和认证性。文中利用串空间证明了该方案密钥传输过程的机密性和认证性以及会话密钥的认证性，并和现有的协议进行性能对比，结果表明在假设条件下，该方案是可行的，且性能消耗小。因此文中方案具有较强的实用性。

A Scheme of Identity-based Satellite Network Key Management

To further improve the efficiency of satellite network key management, assume TCC （Telluric Control Center） as PKG （Private Key Generation） is totally trustable and has a strong computing ability,using TCC to calculate private key for each satellite and Shamir secret sharing scheme to transfer private key to each satellite node in piece,it uses each node＇ s private key to encrypt timestamp and location information of the node to guarantee freshness and authentication. In this paper, use strand space model to prove security and authentication in the key transfer process, and the authentication of session key. Compared with the current protocols, it turns out that, under the assuming condition, the scheme can be thought of as practical and has less efficiency consuming, thus it is practical in actual use.