中文摘要：

基于身份的关键协议协议负担得起一个自然方法把参加者身份与它的公钥相结合。然而，他们中的大多数就在一个单个私人关键发电机(PKG ) 考虑关键协议环境。另外，存在关键协议协议为今天越来越流行的移动计算有大计算开销。这份报纸建议新身份基于关键协议协议。在数学工具的帮助下，我们使我们的协议在多重 PKG 环境应用了。它也满足被放为关键协议协议的所有安全性质。而且，一些它的费时间的操作能被送到 untrusted 公众计算资源，它的计算复杂性能极大地因此被减少。

英文摘要：

Identity-based key agreement protocol affords a natural way to combine the participant＇s identity with its public key. However, most of them just consider the key agreement in a single private key generator （PKG） environment. In addition, the existing key agreement protocols have a great computing overhead for mobile computing which is more and more popular today. This paper proposes a new identity based key agreement protocol. With the help of mathematical tools, we make our protocol applied in multiple PKG environment. It also satisfies all the security properties which is set for key agreement protocol. Moreover, some of its time-consuming operations can be delivered to untrusted public computation resources, so its computing complexity can be greatly reduced.