The security and privacy of the Internet of Things has an impact on the involved stakeholders. Measures ensuring the architecture's resilience to attacks,data confidentiality,access control and client privacy need to be established.A novel transmission model of IoT is proposed with trusted computing technology.And signcryption schemes from bilinear pairings,which realizes the security requirement of IoT in ONS query and object information transmission.A security architecture and security protocols in the EPC ONS query system have been designed in this model.Root-ONS can authenticate the identities and platform creditability of local ONS servers (L-ONS) by trusted authentication server(TAS),and the TAS give a temporary certificate to validated L-ONS who can apply for enquiry services many times with the certificate in the validated time.A security ONS query service with anonymous authentication provides only to those authorized and trusted L-ONS,which prevents the illegal ONS to enquire information of things.In the transmission process,Remote Information Server of Things(R-TIS) wraps the information of things into multiple encryption layers with the routing node's public key according the order of responded nodes from the end to the start.The encryption data is decrypted the outer layer at each routing node,until the Local Information Server of Things(L-TIS) receives the plain text. Meanwhile,the responded nodes can check the integrity of received data and the creditability of routing path in the transmitting procedure.The analysis shows that the novel transmission model of IoT has many properties,such as security,anonymity,trustworthy and attack-resistant.