Abstract
To make hierarchical wireless sensor network transmission more secure, node life longer, and network operation efficiency higher, a WSN shared vital management scheme based on LEACH protocol is proposed. The program has good integrity and timeliness, dynamic critical security, node security independence, and critical survival effectiveness. It also can resist risks such as man-in-the-middle attacks and DDoS attacks, and it is expensive to distribute shared keys. The energy is lower, and the network operation efficiency is higher.