AUTHENTIFIKATION VON ROUTER ADVERTISEMENTS IN EINEM FAST ROUTER DISCOVERY SYSTEM

摘要

A method and a Mobile Node are provided for authenticating an Advertisement message received from an Access Router through an Access Point. The Advertisement message comprises a Hashed Nonce Value and a Nonce Index corresponding to a Nonce Value held in the Access Router. Upon receiving the Advertisement message from the Access Point, the Mobile Node initiates a process for configuring an IP address, by use of information received in the Advertisement, for having a session with the Access Point and the Access Router. In parallel, either the Access Point or the Mobile Node sends the Nonce Index directly to the Access Router. The Access Router replies with the Nonce Value sent to the Mobile Node. The Mobile Node hashes the Nonce Value received from the Access Router and compares a Result of the hashing with the Hashed Nonce Value. If the Result matches the Hashed Nonce Value, the Advertisement is considered authenticated and the IP address configured according to the Advertisement is kept in the Mobile Node.