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中文摘要：
分析了Ge等人提出的直接匿名证明方案的安全缺陷，指出该方案的认证协议在用于远程证明时不能抵抗重放攻击和平台伪装攻击。提出一种改进的直接匿名证明的认证协议，引入会话密钥协商机制，增强互认证功能。分析表明，改进方案在正确进行直接匿名证明的前提下，满足不可伪造性和匿名性，能够抵抗重放攻击和平台伪装攻击，协议性能满足移动计算平台的可信验证需求。
英文摘要：
The security flaws of a direct anonymous attestation scheme proposed by Ge, et al. Were analyzed, and the re- sult shows that the authentication protocol of the scheme is vulnerable to reply attacks and platform masquerade attacks when being used for remote attestation. An improved direct anonymous attestation authentication scheme with the in- volvement of key agreement was proposed to provide the property of mutual authentication. The analysis shows that the proposal can realize direct anonymous attestation with the properties of forgery-resistance and anonymity, and resist reply attacks and platform masquerade attacks; the scheme is effective and suitable for the mobile trusted computing platforms.
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