METHOD AND SYSTEM FOR PROVIDING AN ACCESS SPECIFIC KEY

摘要

Method for providing an access specific key for securing of a data transfer between a mobile terminal (1) and a node of an access net (2), wherein with an authentication of the mobile terminal (1), a authentication server (4A) generates a session key, from which a basic key is derived and transferred to a interworking-proxy-server (7). The interworking-proxy-server derives the access specific key from the transferred basis key and provides said key to the node of the access net (2).