The present invention relates to a system for integrating and managing secure data in a wireless Internet platform.;The present invention integrates security data in a wireless Internet platform to manage a series of processes for generating, updating, and destroying security data in a process of using a wireless Internet service through a security platform built in a platform layer of a mobile communication terminal. A system for managing data by using a predetermined protocol, comprising: a ground infrastructure for exchanging data wirelessly with the mobile terminal based on a predetermined protocol, the handoff and the radio supporting management function being included in the security stored in the mobile terminal; A wireless access network which relays the wireless Internet service after performing authentication using data; A telephone exchange network operated by a mobile telecommunications operator, which provides a voice telephone or data exchange service to an unspecified number of subscribers through an exchange office, and provides security for the use of the wireless Internet service to the mobile communication terminal requesting to provide the wireless Internet service. A mobile communication network for providing policy information required for a service; And a policy management server connected to the mobile communication network to manage a security policy of a mobile communication service provider.;According to the present invention, by integrating and managing the security data required in the process of running a plurality of application software, it is effective to effectively use the hardware resources of the mobile communication terminal, and effectively protect the security data against hacking attempts have.;Mobile terminal, secure data, platform
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