中文摘要：

提出一种基于时间部署的随机密钥管理方案．该方案采用了特殊的两级随机密钥预分配和清除机制以及按时间顺序的成组部署方法：每个传感器节点从多个密钥池中随机选择密钥并在一定条件下删除相关的密钥；所有传感器节点被组织成部署组并按时间顺序被部署到网络中．与经典的随机密钥管理方案相比，该方案在为成对密钥的生成提供了较高的节点连通度的同时，提高了节点资源利用率并且增强了网络抵抗节点受损攻击的能力．

英文摘要：

This paper proposes a key management scheme using time-based deployment for wireless sensor networks, which is characterized by a special two-tier random key pre-distribution and elimination mechanism as well as a time-based group deployment method. Each sensor node randomly chooses keys from multiple key pools and deletes related keys when certain conditions are satisfied; All the sensor nodes are organized into deployment groups and are chronologically deployed into the network. Compared with classical key management schemes for wireless sensor networks, The proposed scheme increases node resource efficiency and enhances network resilience against node compromise while ensuring a relatively high node connectivity for pair-wise key generation.