Directory services for UMTS. Security aspects

UMTS (Universal Mobile Telecommunications System) is a mobile telephony system that is being developed within the RACE project (Research and Development in Advanced Communications Technologies in Europe). UMTS will allow the connection of any terminal by means of a common interface with different kinds of networks (BISDN, PLMN). In this paper, the security in the distributed databases and links that joins the different components of the fixed network is studied. A comparison and adaptation between the security architecture of the standard X.509 (The Directory. Authentication Framework) of the CCITT and the fixed network of UMTS is established taking into account the different peculiarities of them.<>