Our proposed simple device authentication framework [1] aims to provide device-oriented authentication and authorization mechanisms for non-PC Internet-ready information appliances. The purpose of the framework is to prevent device spoofing, and to restrict unauthorized access to the device in a future ubiquitous network. We have developed the novel smart card software to achieve peer to peer device-oriented PKI authentication and authorization on the secure tamper-resistant smart card. We assume that the smart card mil be attached to a device such as an information appliance. In this paper, we show the prototype implementation of authentication middleware using our novel smart card software and the IKEv1 program. The IKEv1 program cooperates with our novel smart card software to achieve peer to peer production-level identity authentication for devices. Thus, our framework and its application shown in this paper will help to realize secure ubiquitous computing for Internet-ready home appliances. © 2007 IEEE.