英文摘要 |
Social networking sites, such as Facebook and MySpace, have become highly popular to share information with friends and get knowledge from others in recent years. In general, users may leave their personal information on social networking sites. This privacy information may be gotten by some malicious person and cause some privacy problems. For solving these problems, although some privacy enhanced schemes have been proposed, such as: Privacy-by-proxy, FaceCloak, Privacy Watch, etc, we find that there still exist some drawbacks in these schemes. For solving all these drawbacks, we propose a user privacy protection scheme for social network sites. Our scheme can protect users’ online privacy by using fake data to replace real privacy data, submitting the fake data to social networking sites, and storing the encrypted real privacy data on the third party server. Only the authorized friend can get the real privacy information of the user in our proposed scheme. For enhancing the efficiency of discarding the fake data from the Facebook, we use low-cost one-way hash functions and the timestamp technique in our proposed scheme. |