Mobile services access and payment through reusable tickets
Computer Communications
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We propose a secure wireless LAN system for casualusers at event sites or Hotspots who want safer and easieraccess to the networks. It protects users' privacy by creatingseparated SSL sessions for each user, while the WEPshares one encryption key among all users.In the proposed system, in order to access the Inter-net,a user shows "SPKI-based authorization ticket" in SSLclient-authentication phase instead of an ordinary X.509certificate. The SPKI-based authorization ticket proves thatthe user has appropriate rights from the system while notshowing his/her ID.A user can also access the Internet in another way thatthe user does not register his/her ID in contrast with existingsecure wireless LAN systems. The proposed system restrictsusable protocols and prevents unauthorized user from attackingto the Internet. By hiding user IDs from gateways,a user can retain his/her privacy.Moreover, the proposed system can be easily installedwithout modifying existing wireless LANs.