Radio LAN access authentication system

摘要

A wireless LAN access authentication system capable of shortening the time required for an access authentication procedure of a radio terminal apparatus. In this wireless LAN access authentication system, when a radio terminal apparatus 116 of a user who has sent an access request is already registered through initial access, a gateway apparatus 111 searches for a WEP key assigned to the radio terminal apparatus 116 through a WEP key control section 306 and redistributes the WEP key registered beforehand to a new access point section 124 in the destination area and the radio terminal apparatus 116 . The radio terminal apparatus 116 and access point section 124 to which the WEP key has been distributed encrypt transmission/reception data in a predetermined radio section using the redistributed WEP key and carry out a communication.