ID 原文 译文
46756 通过服务器的公钥保护用户的认证信息，避免了基于口令的认证协议可能遭受的离线字典攻击。 The authentication mes-sages of the user were protected by the server’s public key, so the protocol can resist the off-line dictionary attack which often appears in the authentication protocols based on password.
46757 基于椭圆曲线计算性 Diffie-Hellman 假设，在随机预言模型下证明了协议的安全性。 The security of the proposed protocol was given in the random oracle model provided the elliptic computational Diffie-Hellman assumption holds.
46758 性能分析表明，所提出的协议具有较高的安全属性。 The performance analysis shows the proposed protocol has better security.
46759 集中式可信第三方结构是基于位置的服务中常用的隐私保护结构。 The centralized structure of the trusted third party is a major privacy protection structure on location based services.
46760 然而，一旦中心第三方服务器被攻破或不可信任，用户的位置隐私就有被泄露的风险。 However, if the central third party server can not be trusted or compromised, users have the risk of leakage of privacy location.
46761 针对以上问题，提出一种用户自定义网格化的位置隐私保护方案， Aiming at the above problems, location privacy protection approach based on a user-defined grid to hide location was proposed.
46762 先将查询范围自动网格化处理，再结合保序加密技术，使用户的实时位置在隐藏状态下仍能进行比较。 The system first automatically converted the query area into a user-defined grid, and then the approach utilized order preserving encryption, which made the user’s real-time position in the hidden state could still be compared.
46763 由于该方案在整个查询过程中，信息全程处于加密状态，服务器不知道任何用户的具体位置信息，增强了对用户位置隐私的保护； Be-cause the information in the process of the approach was in a state of encryption, the server could not know the user’s location information, thus improved privacy protection of the user location.
46764 又由于该方案的中心第三方服务器只需要进行简单的比较操作，有效减少了它在处理大量数据时的时间开销。 The central third party server only need to do simple comparison work, so its processing time overhead would effectively decrease.
46765 安全分析阐明了该方案的安全性，模拟实验结果表明该方案能够使中心服务器的时间开销明显降低。 Security analysis certificate the security of the proposed approach and simulation experimental show the proposed approach can reduce the time cost of the central third party server.