MOBILE MICRO SECURITY SYSTEM FOR MOBILE COMMUNICATION SYSTEM FOR PERFORMING DATA COMMUNICATION UNDER INTERNET ENVIRONMENT AND METHOD THEREFOR

摘要

PURPOSE: A mobile micro security system(MMS) for a mobile communication system for performing a data communication under Internet environment and a method therefor are provided to decrease risk capable of exposing an intrinsic secret key and accurately recognize an exposed system when the system is exposed. CONSTITUTION: A service server encodes a stored MISP public key(320) and generates an MISP authentication document(330). A terminal performs an electronic signature of the MISP authentication document(330) using an MMS public key(340), decodes the MISP authentication document(330), and generates an MISP public key(350). The generated MISP public key(350) is used when performing the electronic signature of a CP authentication document(370) from a contents providing server, and a CP public key(380) transmitted from the contents providing server is generated through the electronic signature. The CP authentication document(370) is signed using the MISP public key(350) generated by the MMS public key(340), and a corresponding CP public key(380) is generated.