(57) ABSTRACT A service ticket request is transmitted to a key distribution center in
response to providing the security credential. In response to the transmitting, a session key …

Embodiments of the invention provide methods and appa ratuses for session key
generation, which use Diffie-Hellman procedure in both user equipment and network to …

A system and method for authenticating users over a network. At least one pluggable
authentication module (PAM) is used to authenticate users of network services. Each PAM …

The present invention provides a method of providing a client with a copy of authorization
data that can be accessed and utilized by the client. The method includes the steps of …

A request is received at an authorization entity for access to a service producer by a service
consumer. The request comprises a public key of the service consumer. The authorization …

The present invention provides a method of key material generation in which the key
material is used to authenticate communication for user equipment and at least one network …

(57) ABSTRACT A packet-switched communications device in an enterprise network is
provided. The packet-switched communications device has a corresponding unique …

A system and method for secure network communication. In various embodiments of the
present invention, data needed for authentication an encryption is included in each …

(57) ABSTRACT A method is provided for maintaining a common billing identifier for a user
session in a communication network. In the method, an authentication request associated …

Method of authenticating a client comprising the steps of sending a subscriber identity to an
authentication server; obtaining at least one challenge and at least one first secret to the …