DIGITAL INFORMATION SECURITY METHOD AND SYSTEM THEREFOR

摘要

PURPOSE: A digital information security method and a system therefor are provided to prevent that an internal or external user unlawfully uses digital information sub as a digital file or program shared in a company and an institution. CONSTITUTION: A user application tool(214) is installed in a user terminal(14) for generating an intrinsic key of a corresponding user using system intrinsic information of the user terminal(14). A data storing unit(140) stores user information and digital information. A user management tool(132) receives the user intrinsic key generated in the user application tool(214), stores the received user intrinsic key as user information in the data storing unit(140), and compares the stored user intrinsic key is identical to a user intrinsic key provided from the user application tool(214) of a currently authenticated user when performing an authentication.