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Environment of the Next-Generation is organized by various sensors and devices. wireless body area network (WBAN) is the core technology connecting Next-Generation's compositional elements around the human to one network. Recently while many researches including healthcare services and wearable PC are actively in progress, technologies of WBAN gradually are beginning to receive the attention, and including various issues that have the close relation with their technical development. The one of WBAN issues is security. Information in WBAN is the collection of data about vital body parameter from several parts of the body. While it is a clue for healthcare or treatment, it is of personal nature and needs to be secured. In this paper, we propose the security model and the security framework to protect the personal healthcare information in WBAN. This acts as guide providing appropriate security and privacy protection of the wireless communication in WBAN.