Patent ID: 8181030
Filing Date: 2012-05-15
Classification: H04L

Abstract:
1. A bundle authentication system comprising: a subscriber terminal calculating a Bundled Authentication Key (BAK) on the basis of an Extended Master Session Key (EMSK) obtained during access authentication and calculating an Auth value using the BAK and an IMS Private User Identity (IMPI) in order to check whether the subscriber terminal has succeeded with the access authentication; a first apparatus receiving a register message including the IMPI and the Auth value calculated by the subscriber terminal and then transmitting the IMPI included in the register message to an integration authentication server; and an integration authentication server performing the access authentication along with the subscriber terminal, calculating a BAK using the EMSK and an Auth value using the BAK and the IMPI after checking the IMPI transmitted from the first apparatus and finding out that the subscriber terminal is a registered subscriber terminal, and transmitting a response message including the Auth value, the BAK and the IMPI to the first apparatus, wherein the first apparatus receives and validates the response message and then transmits a registration success message including the IMPI, the Auth value and the BAK to the subscriber terminal.