基于ID的认证及密钥协商协议

Identity(ID)-based authentication and the key agreement protocol

在改进现有签密技术的基础上,基于身份(ID)的公钥密码系统,提出了一个基于ID的认证及密钥协商协议.该协议能够有效地解决传统公钥系统需要进行证书的传递和验证问题,同时,还具有完备的前向保密性,即使参与者的私钥被泄漏,也不会影响之前所协商共享密钥的安全性.分析发现,本认证及密钥协商方案具有更高的安全性和有效性,能更好地满足应用需求.

Based on an improved signcryption technique and the ID-based public key cryptosystem, a new authentication and key agreement protocol is proposed. The problem of passing and verifying the certificate needed in the traditional public key cryptosystem is well resolved. At the same time, the proposed protocol offers perfect forward secrecy. That is to say, even if the private key of the participant is exposed, the security of the negotiated keys does not suffer. Analysis shows that the proposed ID-based authentication and key agreement protocol is more secure and effective and more applicable than the others.