User generated contents (UGC) are shared in an open space like social media where users can upload and consume contents freely. Since the access of contents is not restricted, the contents could be delivered to unwanted users or misused sometimes. To protect the contents of a UGC creator, the contents can be encrypted by key and the key can be shared among users. However it is quite challenging to distribute the key to anonymous users.
In this paper, we present a method for sharing contents securely based on the personal information of users that includes user profiles and contents preference. With the proposed method, virtual secure space is created for contents delivery. The virtual secure space allows UGC creator to deliver contents to users who have similar personal information and they can consume the contents without any leakage of personal information.
In order to show the practicality of the proposed method, we applied our personal information based content sharing method to home network environment and performed experiments. The results showed that contents were securely shared among users who have similar personal information.