METHOD FOR SECURING USER'S INFORMATION THEREOF IN MOBILE COMMUNICATION SYSTEM OVER PLURAL CONNECTING WITH INTERNET

摘要

The present invention relates to a user information security method of a mobile communication system that performs data communication between a content providing server and a mobile communication terminal through a service server in an Internet environment, and performs security processing of user information based on a public key structure. The present invention is a mobile communication system that performs data communication according to content provision through a content providing server and a service server as an Internet environment, and performs security processing of user information as a content providing server public key generated in performing the data communication. A user information security method of a terminal, the method comprising: passing a secret key, which transmits a previously stored unique secret key to the service server when a request is made to perform a data communication service according to a user information security request; A service server public key generation for digitally signing a certificate of a service server received in response to the transfer of the private key as a symmetric key of the previously stored private key, and as a result generating a public key of the service server; And a content providing server public key for generating a public key of the content providing server by electronically signing the certificate of the content providing server delivered from the service server as the generated service server public key.