In order to overcome the drawback of the existent multicast authentication protocol in WSN

the PKC-based services for WSN was explored and an efficient ID-based multicast authentication protocol was presented.The protocol with message recovery provided the feature that the message was recoverable from the signature and hence the computa-tional cost and communication overhead of the protocol had been reduced greatly.This protocol was proved secure against existential forgery under adaptive chosen message and ID attack in the random oracle model.The performance analysis results show that the proposed scheme can effectively reduce resource cost

adapt the characteristics of WSN and is clearly superior to the HESS

Zhang and BLS protocols.