而环签名具有运算效率高、匿名性强的特点，利用无证书公钥系统可解决密钥管理问题。

Ring signature has high computational efficiency and strong anonymity, so the the key management can be solved by using the certificateless public key system.

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经安全性分析证明，该协议可以在可信计算环境下保证密钥交换的机密性与可靠性，同时还可以保证主机完整性与主机匿名性。

The security analysis can prove that the protocol can ensure the confidentiality and reliability of key-exchange, and the integrity and anonymous of host in trusted computing environments.

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