改进的基于标准模型的一轮密钥交换协议
doi: 10.3724/SP.J.1146.2008.01533
Improved One-Round Key Exchange Protocol in the Standard Model
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摘要: 该文提出了一个一轮密钥交换协议。协议是基于标准模型的，没有用到可能会影响协议安全性的真随机谕示模型(ROM)。基于DDH假设和伪随机函数簇两个基本的计算复杂度假设，可以证明协议是SK安全的，并且协议具有较低的通信复杂度和计算复杂度。
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关键词:
- 密钥交换协议; 可证明安全; 标准模型
Abstract: In this paper, a new authenticated key exchange protocol is proposed and its security is proved in the stronger version of the well-known CK model revised by Krawczyk. The analysis of the protocol is under standard model instead of Random Oracle Model (ROM). The proposal is based on the two basic computational complexity assumptions of DDH assumption and the existence of Pseudo Random Function (PRF) family. Compared with Boyd et al.s protocol, the protocol possesses simpler communication and computation complexity. -
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