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中文摘要：
安全和隐私是配置车载网络时所需要的2个重要条件，具有保护隐私功能的认证是实现这2个条件的关键技术．不同于已有的认证方案，文中用群签名来实现车载网络中能保护隐私的车辆认证．为了满足认证的快速性要求，基于目前安全性最强、效率较高和签名较短的ZL06局部验证者撤销短群签名方案，提出了2个具有隐私保护功能的车载网络中的车辆认证方案．群签名所具有的良好性质保证了所提出的认证方案具有实用性和隐私保护功能．
英文摘要：
Security and privacy are two integrated issues in deploying vehicular networks. Privacy preserving authentication is a key technique in addressing these two issues. Using group signature is proposed to authenticate vehicles in vehicular networks. To meet the requirements of speediness of authentication, ZL06 shorter verifier-local revocation group signature scheme is chosen as the underlying scheme, which is the most secure and more effective one by now. According to the selected group signature scheme,two privacy preserving authentication mechanisms are given which are suitable for vehicular networks. The outstanding properties of group signature guarantee that the authentication schemes have desirable properties of practical privacy preserving.
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