Routing advertisement authentication in fast router discovery
First Claim
1. A method of authenticating in a Mobile Node a first Advertisement received from an Access Point, the method comprising the steps of:
- receiving at the Mobile Node from the Access Point the first Advertisement comprising a first Network Prefix, a Nonce Index and a first Hashed Nonce Value;
configuring at the Mobile Node a first IP address by use of the first Network Prefix, and concurrently authenticating the first Advertisement by;
receiving at the Mobile Node from the Access Router a second Advertisement, the second Advertisement comprising a Nonce Value corresponding to the Nonce Index and a second Network Prefix;
hashing at the Mobile Node the Nonce Value to calculate a second Hashed Nonce Value; and
comparing at the Mobile Node the first Hashed Nonce Value and the second Hashed Nonce Value; and
keeping at the Mobile Node the first IP address if the first Hashed Nonce Value is equal to the second Hashed Nonce Value.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
23 Claims
-
1. A method of authenticating in a Mobile Node a first Advertisement received from an Access Point, the method comprising the steps of:
-
receiving at the Mobile Node from the Access Point the first Advertisement comprising a first Network Prefix, a Nonce Index and a first Hashed Nonce Value;
configuring at the Mobile Node a first IP address by use of the first Network Prefix, and concurrently authenticating the first Advertisement by;
receiving at the Mobile Node from the Access Router a second Advertisement, the second Advertisement comprising a Nonce Value corresponding to the Nonce Index and a second Network Prefix;
hashing at the Mobile Node the Nonce Value to calculate a second Hashed Nonce Value; and
comparing at the Mobile Node the first Hashed Nonce Value and the second Hashed Nonce Value; and
keeping at the Mobile Node the first IP address if the first Hashed Nonce Value is equal to the second Hashed Nonce Value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A Mobile Node, comprising:
-
a Receiver for receiving a first and a second Advertisements;
a Temporary Memory for storing a Network Prefix, a Nonce Index and a Hashed Nonce Value received in the first Advertisement, for storing a Nonce Value received in the second Advertisement, and for storing a first IP address, a Processor for configuring the first IP address based on the Network Prefix, the configuring being initiated concurrently with authenticating the first Advertisement, and for hashing the Nonce Value; and
a Decision Logic for authenticating the first Advertisement by comparing a Result of the hashing with the Hashed Nonce Value and for deciding to keep the first IP address based on an outcome of the comparison. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification