中文摘要：

处于恶劣环境中的无监护传感器网络面临安全威胁。由于无人值守，传感器节点必须临时保存检测数据，而缺乏抗毁保护的节点面临保护数据安全的难题。在无监护传感器网络中，网络管理者定期派遣移动sink收集检测数据，如果移动sink被赋予过多的特权，它会成为攻击目标，由此必须要限制移动sink的特权。此外，安全的密钥管理是保障传感器网络数据机密性、完整性和通信安全的基础。针对以上安全问题，提出适用于移动sink场景的密钥分发方案和移动sink特权限制方法。

英文摘要：

Unattended wireless sensor networks operating in hostile environments face the risk of compromise. Given the unattended nature, sensors must safeguard their sensed data of high value temporarily. However, saving data inside a network creates security problems due to the lack of tamper-resistance of sensors and the unattended nature of the network. In some occasions, a network controller may periodically dispatch mobile sinks to collect data. If a mobile sink is given too many privileges, it will become very attractive for attack. Thus, the privilege of mobile sinks should be restricted. Additionally,secret keys should be used to achieve data confidentiality, integrity, and authentication between communicating parties. To address these security issues, we present mAKPS, an asymmetric key predistribution scheme with mobile sinks, to facilitate the key distribution and privilege restriction of mobile sinks.