A light-weight and scalable broadcast authentication protocal has been proposed for sensor network.Instead of using Merkel tree to combine multiple μTESLA key chain

it applys compressed Bloom filters to multiple μTESLA.This protocol can support longer duration and prolong the self-healing property.It greatly reduces the communication overhead by allocating moderate space in each receiver.Combing with ECC like PKC computation mode

the result show that this protocol can guarantee long-term security and also reduce energy consumption.