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基于单一密码体制下的密钥管理系统都存在一些缺陷,不能完美地满足日益增长的应用需求。对于非对称密码体制的组合公钥技术,在安全性要求较高、相对封闭的应用环境下,有较好的实用特性。采用对称密码体制和公钥密码体制相结合的技术手段,设计出一个混合密码体制下的新型密钥管理系统,包括密钥管理模型、系统功能、密钥周期管理策略等,并对该系统的各项性能(安全性、高效性、灵和性、可扩展性)进行了详细的论述。
The key management system based on the single password system has some defects, which can not perfectly meet the increasing application requirements. As for the combination public key technology of asymmetric cryptosystem, it has good practical features under the application environment of higher security and relatively closedness. A new key management system under mixed cryptosystem is designed by using the combination of symmetric cryptosystem and public key cryptosystem, including key management model, system function, key cycle management strategy and so on. The performance (security, efficiency, spirituality, scalability) were discussed in detail.