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Most people say that home network will become one of the most important things in the future industries and create high profit. Home network will grow to the direction that improves human life more conveniently. In the near future, the intelligent home environment where diverse home services are provided, there are various devices connected to the network and people can roam between homes will emerge in the human life. However, due to such a complexity of the home network, it will become more difficult for us to find an appropriate security mechanism for home network. In this paper, we present the efficient authentication and authorization architecture for smart home network. To achieve our goal, we consider the various characteristics of home network such as performance of home appliances, roaming between homes, privacy, etc.