Motorola Corporation

Motorola Solutions, Inc.

Zhi Fu

Anthony R Metke

Donald Eggleston Eastlake, Iii

Gregory W Cox

Aaron M Smith

A method and system for mutually authenticating a first node and a second node operating in a wireless communication network enables mutual authentication when the first node and the second node are unable to directly authenticate each other. The method includes identifying, at the first node, a third node that can authenticate both the first node and the second node (step). Authentication data for authenticating the first node with the third node is then transmitted from the first node to the third node (step). Keying material that is received from the third node is then processed at the first node (step). A shared secret mutual authentication protocol is then processed, whereby the first node and the second node are mutually authenticated by proving that they each have authenticated with the third node and each have the keying material (step).

Method and system for mutual authentication of wireless communication network nodes

An ad hoc network includes a first node, a second node, and a third node. The first node and second node share a first shared secret key, and the first node and third node share a second shared secret key. The second node and third node share a temporal key. The first node generates a unique key, encrypts the unique key with a first shared secret key to generate a first encrypted unique key and transmits the first encrypted unique key to the second node. The first node encrypts the unique key with a second shared secret key to generate a second encrypted unique key and transmits the second encrypted unique key to the third node. To establish the temporal key, the second node decrypts the first encrypted unique key and the third node decrypts the second encrypted unique key thereby each generating the unique key.

Ad-hoc network key management

A method and system for propagating mutual authentication data in both a first wireless communication network and a second wireless communication network is useful for unifying wireless communication networks. The method includes mutually authenticating a first node operating in the first network and a second node operating in the second network (step). A unification message is then transmitted from the first node to a third node operating in the second network, where the unification message indicates that the first node is authenticated with the second network (step). In response to the unification message, authentication messages from the third node and the second node are then relayed through the first node, for mutually authenticating the third node and the second node (step).

Method and system for propagating mutual authentication data in wireless communication networks

A method for mutual authentication in a mobile wireless communication network () that includes the steps of: verifying a second authenticating device () by a mobile node () based on a first authentication between the mobile node and a first authenticating device (); and verifying the mobile node by the second authenticating device based on the first authentication, whereby the mobile node and the second authenticating device perform a second authentication.

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Lake Zurich, IL, United States of America

Zhi Fu